### ast-base package

The AT&T Software Technology ast-base package from AT&T Research contains commands and libraries required by all other ast based packages. Included are ksh93, a pax that generates compact delta archives, nmake, the 3d user level versioning filesystem, coshell for network execution, a multi-dialect C preprocessor and companion library, and libraries shared by the other ast packages. Components in this package:

3d | html | paxlib | libardir | libcs | librecsort
bzip | ksh93 | probe | libast | libdll | libsum
codexlib | mam | proto | libbz | libexpr | libuu
coshell | msgcc | ss | libcmd | libmam | libvdelta
cpp | nmake | tests | libcodex | libodelta | libz
cs | pax | tw | libcoshell | libpp

This package is a superset of the following packages: ast-make ast-ksh ksh ast-ast; you won't need these if you download ast-base. A recent release change log is also included.

### 3d

3d is the historical name for n DFS, the multiple dimension file system. It is implemented as a shared library that is preloaded before any other shared library using the recently documented (ahem) LD_PRELOAD or _RLD_LIST feature of the runtime linker. 3d intercepts pathname system calls (and other calls if tracing is turned on) and provides a logical namespace on top of the underlying physical file system. The shared library implementation currently works only on bsd.i386, linux.i386, osf.alpha, sun4, sol.*, and sgi.*.

3d works in conjunction with ksh88 or ksh93. The 3d command with no arguments enters a 3d shell. The vpath builtin controls the logical filesystem view:

         vpath dir_1 dir_2

mounts the directory hierarchy dir_1 on top of dir_2. Files under dir_1 overlay files under dir_2. Files under dir_2 are readonly; any files under dir_2 that are modified are first copied to the corresponding place in dir_1. vpaths may be chained:

         vpath dir_2 dir_3

vpaths are per-process; every process may have a different view. vpaths are a handy way to separate source and generated files. Typical advsoft users set up 3d at login or xterm time:

         export HOSTTYPE=$(package)
         vpath $HOME/arch/$HOSTTYPE $HOME

with source files in `$HOME/src/(cmd|lib)/*`. nmake is run in `$HOME/arch/$HOSTTYPE/src/(cmd|lib)/*` and generated files (objects and executables) are dropped in the top hierarchy.

2d can prefix any command to disable 3d for that command:

         2d ls *.c

3d also provides tracing, monitoring and call intercept services. vpm uses monitoring to graph the process and io hierarchy. The cs name server uses pathname call intercepts to translate network pathnames. Try this for any host:

         cat /dev/tcp/hostname/inet.daytime

### coshell

coshell executes blocks of shell commands on lightly loaded hosts in the local network. There is one coshell server per user. This server runs as a daemon on the user's home host, and only processes running on the home host have access to the server. The server controls a background ksh shell process, initiated by rsh, on each of the connected hosts.

coshell is easy to use and administer. The only privilege required for installation, administration or use is rsh access to the local hosts. coshell does requires a uniform file namespace across all hosts on the local network.

nmake and gmake users can take advantage of network execution with no makefile modifications. Shell level access is similar to but more efficient than rsh and allows host expression matching to replace the explicit host name argument.

Factor of 5 compilation speedups are typical.

To start your local daemon:

         coshell +

To send nmake or gmake actions to coshell at concurrency level 8:

         export COSHELL=coshell
         export NPROC=8

To run shell commands on a lightly loaded host:

         coshell -r - 'hostname; sort a > b' &
         pid=$!
         # other stuff
         wait $pid

For interactive coshell status:

         coshell -
         coshell> s
          ... status ...
         coshell> h
          ... help ...
         coshell> q

package generates static host information and ss lists the dynamic status of hosts on the local network.

### ksh93

KSH-93 is the most recent version of the KornShell Language described in "The KornShell Command and Programming Language," by Morris Bolsky and David Korn of AT&T Bell Laboratories, ISBN 0-13-182700-6. The KornShell is a shell programming language, which is upward compatible with "sh" (the Bourne Shell), and is intended to conform to the IEEE P1003.2/ISO 9945.2 Shell and Utilities standard. KSH-93 provides an enhanced programming environment in addition to the major command-entry features of the BSD shell "csh". With KSH-93, medium-sized programming tasks can be performed at shell-level without a significant loss in performance. In addition, "sh" scripts can be run on KSH-93 without modification.

The code should conform to the IEEE POSIX 1003.1 standard and to the proposed ANSI-C standard so that it should be portable to all such systems. Like the previous version, KSH-88, it is designed to accept eight bit character sets transparently, thereby making it internationally compatible. It can support multi-byte characters sets with some characteristics of the character set given at run time.

KSH-93 provides the following features, many of which were also inherent in KSH-88:

- Enhanced Command Re-entry Capability: The KSH-93 history function records commands entered at any shell level and stores them, up to a user-specified limit, even after you log off. This allows you to re-enter long commands with a few keystrokes - even those commands you entered yesterday. The history file allows for eight bit characters in commands and supports essentially unlimited size histories.
- In-line Editing: In "sh", the only way to fix mistyped commands is to backspace or retype the line. KSH-93 allows you to edit a command line using a choice of EMACS-TC or "vi" functions. You can use the in-line editors to complete filenames as you type them. You may also use this editing feature when entering command lines from your history file. A user can capture keystrokes and rebind keys to customize the editing interface.
- Extended I/O Capabilities: KSH-93 provides several I/O capabilities not available in "sh", including the ability to:
  - specify a file descriptor for input and output
  - start up and run co-processes
  - produce a prompt at the terminal before a read
  - easily format and interpret responses to a menu
  - echo lines exactly as output without escape processing
  - format output using printf formats.
  - read and echo lines ending in "\".
- Improved performance: KSH-93 executes many scripts faster than the System V Bourne shell. A major reason for this is that many of the standard utilities are built-in. To reduce the time to initiate a command, KSH-93 allows commands to be added as built-ins at run time on systems that support dynamic loading such as System V Release 4.
- Arithmetic: KSH-93 allows you to do integer arithmetic in any base from two to sixty-four. You can also do double precision floating point arithmetic. Almost the complete set of C language operators are available with the same syntax and precedence. Arithmetic expressions can be used to as an argument expansion or as a separate command. In addition there is an arithmetic for command that works like the for statement in C.
- Arrays: KSH-93 supports both indexed and associative arrays. The subscript for an indexed array is an arithmetic expression, whereas, the subscript for an associative array is a string.
- Shell Functions and Aliases: Two mechanisms - functions and aliases - can be used to assign a user-selected identifier to an existing command or shell script. Functions allow local variables and provide scoping for exception handling. Functions can be searched for and loaded on first reference the way scripts are.
- Substring Capabilities: KSH-93 allows you to create a substring of any given string either by specifying the starting offset and length, or by stripping off leading or trailing substrings during parameter substitution. You can also specify attributes, such as upper and lower case, field width, and justification to shell variables.
- More pattern matching capabilities: KSH-93 allows you to specify extended regular expressions for file and string matches.
- KSH-93 uses a hierarchal name space for variables. Compound variables can be defined and variables can be passed by reference. In addition, each variable can have one or more disciplines associated with it to intercept assignments and references.
- Improved debugging: KSH-93 can generate line numbers on execution traces. Also, I/O redirections are now traced. There is a DEBUG trap that gets evaluated after each command so that errors can be localized.
- Job Control: On systems that support job control, including System V Release 4, KSH-93 provides a job-control mechanism almost identical to that of the BSD "csh", version 4.1. This feature allows you to stop and restart programs, and to move programs between the foreground and the background.
- Added security: KSH-93 can execute scripts which do not have read permission and scripts which have the setuid and/or setgid set when invoked by name, rather than as an argument to the shell. It is possible to log or control the execution of setuid and/or setgid scripts. The noclobber option prevents you from accidentally erasing a file by redirecting to an existing file.
- KSH-93 can be extended by adding built-in commands at run time. In addition, KSH-93 can be used as a library that can be embedded into an application to allow scripting.

Documentation for KSH-93 consists of an "Introduction to KSH-93", "Compatibility with the Bourne Shell" and a manual page and a README file. In addition, the "New KornShell Command and Programming Language," book is available from Prentice Hall.

### msgcc

msgcc and msgcpp extract message text from C source for gencat(1) message catalogs. msggen(1) is a gencat(1) replacement that generates machine independent binary message catalogs that are compatible with the ast catgets(3) implementation. catgets also supports native message catalogs where available. msgcvt(1) and msgadmin(1) are administrative commands that support machine translation of C locale message catalogs.

### nmake

nmake is the AT&T nmake, first released in 1985. nmake is a modern variant of the traditional Feldman make with an important difference: nmake maintains state that records information for future runs. The state includes:

- file modification times
- explicit prerequisites (from makefile assertions)
- implicit prerequisites (from #include scanning)
- action text (used to build targets)
- variable values
- target attributes

State and a language to manipulate it finally makes concise makefiles a reality; concise because rules traditionally placed in each makefile can now be implemented in a general way in a single base rules file. The base rules are such a fundamental part of nmake that most of its visible features are controlled by them.

Most makefiles are just a few lines:

         :PACKAGE: X11

         xgame :: README xgame.6 xgame.h xgame.c xutil.c -lXaw -lXmu -lXt

Automatically generated probe information provides convenient compiler abstractions:

         CCFLAGS = $(CC.DLL)

         ast 4.0 :LIBRARY: ast.c strmatch.c

In this case if the compiler supports shared libraries (aka dll s) then `nmake install` will generate libast.a and libast.so.4.0 (or the appropriate shared library suffix determined by CC.SUFFIX.SHARED). There are no nmake makefile generators (because the makefiles are so small), there is no separate `make depend` (because the files with .SCAN attributes are automatically scanned for implicit prerequisites), and there is no cheating (because all time stamp changes are detected, not just newer-than).

### pax

pax is a POSIX 1003.2 conformant replacement for tar and cpio that handles most UNIX archive and tape formats. pax uses the vdelta algorithm to construct efficient delta archives that contain bytewise changes from a given base archive. gzip and compress archives are also handled on input and output.

To create a vdelta compressed base archive:

         tw | pax -w -f base -z -

To create a delta archive on the base above (record file changes only):

         tw | pax -w -f delta -z base

To read the delta archive:

         pax -r -f delta -z base

To create a delta archive from linux-1.2.0 to linux-1.2.5:

         pax -rf linux-1.2.5.tar.gz -wf 0-5.pax.gz -x gzip -z linux-1.2.0.tar.gz

To create the linux-1.2.5 archive:

         pax -rf 0-5.pax.gz -z linux-1.2.0.tar.gz -wf linux-1.2.5.tar.gz -x tar -x gzip

The bax script, shipped with pax, combines tw and pax for handy backup control.

### proto

proto converts ANSI C prototype constructs to constructs compatible with K&R C, ANSI C, and C++. Only files with the line

         #pragma prototyped

in the first 64 lines are processed; other files are silently ignored. This is how advsoft source is first shipped to foreign architectures. Once advsoft is bootstrapped the non-proto source can be built using the advsoft tools.

proto also converts in the other direction by providing extern prototypes for a collection of K&R source files and by converting K&R source files in place. K&R to ANSI is not 100%, but is a good starting point for manual conversion.

proto is token based (no C grammar); this allows it to convert before C preprocessing, and also allows proto to be inserted into the standalone cpp. This is how nmake compiles ANSI C source with K&R compilers.

### tw

tw is a combination of find and xargs that applies C style expressions on the stat structure of each file in a directory hierarchy.

         tw

lists the directory hierarchy under the current directory,

         tw chmod go-rwx

changes the mode of all files in the directory hierarchy under the current directory by calling chmod as few times as the exec arg limit allows.

         tw -d /usr/src -e "name=='*.[chly]'" grep FOOBAR

greps for FOOBAR in all the C source files in /usr/src.

tw efficiently prunes the file tree search; it follows symbolic links by default (logical walk). The getconf variable PATH_RESOLVE controls the default behavior for all advsoft commands:

         getconf PATH_RESOLVE - physical

sets the default to not follow symbolic links, logical to follow, and metaphysical to follow only command line symbolic links (corresponding to the -P, -L and -H command options that override the default).

         tw -P -e type==LNK

does a physical walk that lists all symbolic links.

         tw -e "mtime>='yesterday morning'"

lists all files modified since yesterday morning. The magic file types from the file command are available in tw expressions (tw and file use the same library routine in libast):

         tw -e "(mode & 'u+s') && magic == '*script*'" chmod u-s

finds all setuid scripts and turns off the setuid mode bit. The magic file also contains MIME types:

         tw -e "mime == '*/exe'"

lists all executable programs (a.out's).

### release change log

ksh93 | pax | html | proto | bzip | tw | tests | 3d
coshell | cpp | cs | mam | msgcc | nmake | probe | ss
libast | libardir | libcmd | libdll | libexpr | librecsort | libsum | libuu
libvdelta | libbz | libz | libcoshell | libcs | libpp | libcodex

    All recorded changes follow.

### ksh93 changes

    06-01-24  --- Release ksh93r  ---
    06-01-24  A bug in which running commands with standard output closed would
    	  not work as expected has been fixed.
    06-01-23  A bug in which print -u<n> could fail when file descriptor <n> was
    	  open for writing has been fixed.
    06-01-19  The ?: arithmetic operator fixed to work when the operation after
    	  the colon was an assignment.
    05-12-24  A bug which could lead to a core dump when elements of a compound
    	  variable were array elements, i.e. foo=(bar=(1 2)), has been fixed.
    05-12-13  An arithmetic bug in which x+=y+=z was not working has been fixed.
    05-12-13  An arithmetic bug in which x||y was returning x when x was non-zero
    	  rather than 1 has been fixed.
    05-12-07  The aliases for integer and float have been changed to use attributes
    	  -li and -lE to handle long long and long double types.
    05-12-07  The histexpand (-H) option has been added which allows C-shell
    	  style history expansios using the history character !.
    05-12-07  The multiline option was added which changes that way the edit
    	  modes handle lines longer than the window width.  Instead of
    	  horizontal scrolling, multiple lines on the screen are used.
    05-12-05  The whence builtin now returns an absolute pathname when the
              command is found in the current directory.
    05-11-29  A bug which caused ksh -c '[[ ! ((' to core dump rather than
    	  report a syntax error has been fixed.
    05-11-29  A bug when reading fixed length records into typeset -b variables
    	  which caused a zero byte to terminate the value has been fixed.
    05-11-22  The ability to seek to an offset within a file has been added
    	  with the new I/O redirection operators, <#  and >#.  Currently,
    	  these redirection operators must be followed by ((expr))
    	  but in a future release, it should be able to used to seek forward
    	  to the specified shell pattern.  In addition $(n<#) expands to the
    	  current byte offset for file descriptor n.
    05-11-22  The .sh.match array variable is now set after each [[ ... ]]
    	  pattern match.  Previously it was only set for substring matches.
    05-10-17  A bug in which the library path variable could be prefixed
              with a directory when a .path file was not encountered in
    	  the directory of the executable has been fixed.
    05-09-15  A for/while loop optimizer bug in which $OPTIND was not
    	  correctly expanded has been fixed.
    05-09-05  A bug in which a history command that invoked a history
    	  command could go into an infinite loop has been fixed.
    05-08-31  In the case that IFS contains to adjacent new-lines so that
    	  new-line is not treated as a space delimiter, only a single
    	  new-line is deleted at the end of a command substitution.
    05-08-19  When a tilde substitution expands to the / directory and is
    	  followed by a /, it is replaced by the empty string.
    05-08-16  A bug in which n<&m did not synchronize m has been fixed.
    05-08-16  A bug in which process substitution  ( <() and >() ) was not
    	  working within for and while loops has been fixed.
    05-07-24  A bug in which the pattern ~(E)(foo|bar) was treated as a syntax
    	  error has been fixed.
    05-07-24  A bug in completion with <n>=, where n was the one of the
    	  previous selection choices has been fixed.
    05-07-21  A bug with multibyte input when no edit mode was specified which
    	  caused the input line to shift left/right has been fixed.
    05-06-24  A race condition which could cause the exit status to get lost
    	  on some fast systems has been fixed.
    05-06-21  A bug in which nested patterns of the form {m,n}(pat) would cause
    	  syntax errors has been fixed.
    05-06-21  A bug in the macro expander has been fixed which could cause a
              syntax error for an expansion of the form ${x-$(...)} when
    	  x is set and the command substitution contained certain strings.
    05-06-08  On systems for which echo does not do System V style  expansions,
    	  the -e option was added to enable these expansion.
    05-06-08  A bug in which ${var op pattern} to not work when inside an
    	  arithmetic expression has been fixed.
    05-05-23  An extension to shell patterns that allows matching of nested
    	  groups while skipping over quoted strings has been added.
    05-05-18  A bug in which the line number for errors was not correct for
              functions loaded from FPATH has been fixed.
    05-04-18  A bug in which the exit status $? is not set when a trap triggered
    	  by the [[...]] command is executed has been fixed.
    05-04-08  Redirection operators can be directly preceded with {varname}
    	  with no intervening space, where varname is a variable name which
    	  allows the shell to select a file descriptor > 10 and store it
    	  into varname.
    05-04-08  SHOPT_CMDLIB_BLTIN=1 now includes <cmdlist.h> generated table.
    05-04-07  [[ -o ?option ]] is true if "option" is a supported option.
    05-04-05  A bug in handling file completion with spaces in the names
              has been fixed.
    05-03-25  The SIGWINCH signal is caught by default to keeps the LINES and
    	  COLUMNS variables in sync with the actual window size.
    05-03-25  Building ksh with SHOPT_REMOTE=1 causes ksh to set --rc if stdin is
    	  a socket (presumably part of a remote shell invocation.)
    05-03-25  Building ksh with SHOPT_SYSRC=1 causes interactive ksh to source
    	  /etc/ksh.kshrc (if it exists) before sourcing the $ENV file.
    05-03-25  {first..last[..incr][%fmt]} sequences added to brace expansions
    	  when braceexpand is enabled.
    05-03-03  A bug where a SIGCHLD interrupt could cause a fifo open to fail has
    	  been fixed.
    05-02-25  A bug in which a builtin command run in the background could
    	  keep a file descriptor open which could cause a foreground
    	  process to hang has been fixed.
    05-02-24  A bug where builtin library commands (e.g., date and TZ) failed to
    	  detect environment variable changes has been fixed.
    05-02-22  The read builtin and word splitting are now consistent with respect
    	  to IFS -- both treat IFS as field delimiters.
    05-02-22  The read builtin no longer strips off trailing delimiters that
    	  are not space characters when there are fewer variables than fields.
    05-02-17  A builtin bug on systems where dlsym(libcmd) returns link-time
    	  bindings has been fixed.
    05-02-12  A bug in which the lib_init() function for .paths BUILTIN_LIB
    	  libraries was not called has been fixed.
    05-02-06  A bug on some systems in which moving the write end of a co-process
    	  to a numbered file descriptor could cause it to close has been fixed.
    05-02-06  A bug in the vi-edit mode in which the character under the cursor
    	  was not deleted in some cases with the d% directive has been fixed.
    05-02-06  A bug where external builtin stdout/stderr redirection corrupted
              stdout has been fixed.
    05-02-04  A bug where times formatting assumed CLK_TCK==60 has been fixed.

    05-01-11  --- Release ksh93q  ---
    05-01-11  A bug in the integral divide by zero check has been fixed.
    05-01-11  The -l option has been added to read /etc/profile and
    	  $HOME/.profile, if they exist, before the first command.
    05-01-11  An argument parsing bug that caused `kill -s x -- n' to fail has
    	  been fixed.
    05-01-11  The .paths file, introduced in ksh93m, which can appear in
    	  any directory in PATH, now allows a line of the form 'BUILTIN_LIB=.'
    	  When a command is searched for this directory, and the full path
    	  matches the path of the built-in version of the command (listed
    	  by the 'builtin' command) then the built-in version of the command
    	  is used.  When ksh is built with SHOPT_CMDLIB_DIR=1 then all libcmd
    	  functions become builtins with the '/opt/ast/bin/' directory prefix.
    05-01-10  A bug in which a nameref to a compound name caused a core dump has
    	  been fixed.
    05-01-09  A bug in which some SIGCHLD interrupts (from child processes exiting)
    	  caused a fatal print/echo error diagnostic has been fixed.
    04-12-24  A bug in which some SIGCHLD interrupts (from child processes exiting)
              corrupted the internal process/job list, sometimes causing the shell
    	  to hang, has been fixed.
    04-12-01  A bug in which typeset -Fn truncated less than n digits for large
    	  numbers has been fixed.
    04-11-25  A bug in which standard error could be closed after a redirection
    	  to /dev/stderr has been fixed.
    04-11-17  A bug in which an expansion of the form ${array[@]:3} could expand
              to ${array[0]} when ${array[3]} was not set has been fixed.
    04-10-22  The -E or -orc command line option reads ${ENV-$HOME/.kshrc} file.
    04-10-22  `-o foo' equivalent to `+o nofoo', `-o nobar' equivalent to `+o bar'.
              `--foo' equivalent to `-o foo', `--nofoo' equivalent to `+o foo'
    04-10-05  The .paths file, introduced in ksh93m, which can appear in
    	  any directory in PATH, now allows a line of the form
    	  'BUILTIN_LIB=libname'.  When a command is searched for this directory,
    	  the shared library named by libname will first be searched for a
    	  built-in version of the command.
    04-09-03  <<< here documents now handle quotes in the word token correctly.
    04-08-08  The maximum size for read -n and and read -N was increased from
    	  4095 to 32M.
    04-08-04  printf %q was modified so that if an no operand was supplied, no
    	  no output would be generated rather than a quoted empty string.
    04-08-01  The -n and -N options of the read builtin has been modified
    	  when reading variables with the binary attribute so that the
    	  data is stored directly rather than through assignment.
    04-08-01  The shcomp command has been modified to process alias commands
    	  under some conditions.
    04-07-31  The .sh.match variable added in ksh93l, now works like other
    	  indexed arrays.
    04-07-08  A loop optimizer bug which occurs when typeset is used in
    	  a for or while loop inside a function has been fixed.
    04-06-24  The number of subexpressions in a pattern was increased to 64
    	  from the current number of 20.
    04-06-17  The -t option to read was modified to allow seconds to be
    	  specified as any arithmetic expression rather than just
    	  an integral number of seconds, for example even -t 'sin(.5)'
    	  is now valid.
    04-06-16  Two small memory leak problems were fixed.
    04-06-15  A bug in ${var/pattern/"string"} which occured when string
    	  contained pattern matching characters has been fixed.
    04-05-08  printf $'%d produced an erroneous error message and has
    	  been fixed.
    04-05-24  A bug in which an associative array without any elements could
    	  cause a core dump when a script with an associative array with
    	  the same name was declared in a script invoked by name has
    	  been fixed.
    04-05-11  A bug in which an exec statement could close the script that
    	  is being processed in a script that is run by name causing
    	  a failure has been fixed.
    04-04-28  If the first character of assignment to an integer variable was 0,
              the variable had been treated as unsigned.  This behavior was
              undocumented and has been removed.
    04-04-05  A bug in which the positioning of standard input could be incorrect
    	  after reading from standard input from a subshell has been fixed.
    04-03-30  A bug in the for loop optimizer which in rare cases could cause
    	  memory corruption has been fixed.
    04-03-29  The preset alias source='command .' has been added.
    04-03-29  A bug introduced in ksh93p on some systems in which invoked by
    	  name with #! on the first line would not get the signals handling
    	  initialized correctly has been fixed.
    04-03-29  A bug introduced in ksh93p in which a HUP signal received by
    	  a shell that is a session group leader was not passed down to
    	  its children has been fixed.

    04-02-28  --- Release ksh93p  ---
    04-02-28  The ability to apply an append discipline to any variable has
    	  been added.
    04-02-14  A bug in which the exportall option (set -a) would cause incorrect
    	  results for arrays has been fixed.
    04-02-02  A bug in which an exported array would pass more than
    	  the first element to a script invoked by name has been fixed.
    04-02-02  A bug on some systems in which name=value pairs preceding a script
    	  invoked by name was not getting passed to the script has been fixed.
    04-01-20  A bug in which an unset discipline function could cause a core
    	  dump on some systems has been fixed.
    04-01-12  A bug in which a continue or break called outside a loop from
    	  inside a function defined with name() syntax could affect
    	  the invoking function has been fixed.
    04-01-08  If a command name begins with ~, only filename completion will be
    	  attempted rather than pathname completion using the builtin editors.
    04-01-08  A bug in the vi edit mode in which the wrong repeat count on
    	  multiple word replacements with the . directive has been fixed.
    04-01-06  Backspace characters are now handled correctly in prompt strings.
    04-01-06  The getopts builtin has been modified to accept numerical
    	  arguments of size long long on systems that support this.
    04-01-06  A bug in which unsetting all elements of an associative array
    	  would cause it to be treated as an indexed array has been fixed.
    03-12-15  A bug in which a quoted string ending with an unescaped $ would
    	  delete the ending $ in certain cases has been fixed.
    03-12-05  A bug in which the shell could hang when set -x tracing a command
    	  when an invalid multibyte character is encountered has been fixed.
    03-12-05  On some systems, if the KEYBD trap is set, then commands that use
    	  the meta key were not processed until return was hit.  This
    	  has been fixed.
    03-12-05  A problem which occured when the login shell was not a group
    	  leader that could cause it to fail has been fixed.
    03-12-05  A problem in which a shell could core dump after receiving a signal
    	  that should cause it to terminate while it was in the process
    	  of acquiring more space has been fixed.
    03-12-05  If ENV is not specified, the shell will default to $HOME/.kshrc
    	  for interactive shells.
    03-11-21  A bug introduced in ksh93o in which the DEBUG trap could get
    	  disabled after it triggered has been fixed.
    03-11-04  A bug in which using arithmetic prefix operators ++ or -- on a
    	  non-lvalue could cause a core dump has been fixed.
    03-11-04  A bug in which leading zeros were stripped from variable
    	  expansions within arithmetic computation to avoid being treated
    	  as octal constants when they should not have, has been fixed.
    03-10-08  A bug introduced in ksh93o in which a large here document inside
    	  a function definition could get corrupted has been fixed.
    03-09-22  A bug in which the .get discipline function was not being
    	  called when a string variable was implicitly referenced from
    	  within a numerical expression has been fixed.
    03-09-22  A bug in which a script without a leading #! could get executed
    	  by /bin/sh rather than the current shell on some systems has
    	  been fixed.
    03-09-12  To improve conformance with ksh88, leading zeros will be ignored
    	  when getting the numerical value of a string variable so that
    	  they will not be treated as octal constants.
    03-09-03  The builtin kill command now processes obsolete invocations
    	  such as kill -1 -pid.
    03-09-02  The restriction on modifying FPATH in a restricted shell (sh -r)
    	  has been documented.
    03-09-02  The restricted shell (sh -r) has been modified to disallow
    	  executing command -p.
    03-08-07  A bug in which the KEYBD trap was not being invoked when
    	  characters with the 8th bit set has been fixed.
    03-08-02  A parser bug introduced in ksh93o which caused the character
    	  after () in a Posix function definition to be skipped
    	  when reading from standard input has been fixed.
    03-08-01  A bug in which "${foo#pattern}(x)" treated (x) as if it were
    	  part of the pattern has been fixed.
    03-08-01  The command -x option has been modified so that any trailing
    	  arguments that do expand to a single word will be included
    	  on each invocation, so that commands like command -x mv * dir
    	  work as expected.

    03-07-20  --- Release ksh93o+  ---
    03-07-20  A bug in which could cause memory corruption when a posix
    	  function invoked another one has been fixed.
    03-07-15  A bug in which a file descriptor>2 could be closed before
    	  executing a script has been fixed.
    03-07-15  A parsing error for <() and >() process substitutions inside
    	  command substitution has been fixed.
    03-07-15  A parsing error for patterns of the form {...}(...) when
    	  used inside ${...} has been fixed.
    03-07-15  An error in which expanding an indexed array inside a compound
    	  variable could cause a core dump has been fixed.
    03-07-15  A bug in which under on rare ocassions a job completion interrupt
    	  could cause to core dump has been fixed.
    03-06-26  A bug in which process substitution embedded within command
    	  substitution would generate a syntax error has been fixed.
    03-96-23  A bug in which ${@:offset:len} could core dump when there
    	  were no arguments has been fixed.
    03-96-23  A bug in which ${X[@]:offset:len} could core dump when X
    	  was unset has been fixed.
    03-06-22  The -x option was added to the command builtin.  If this
    	  option is on, and the number of arguments would exceed ARG_MAX,
    	  the command will be invoked multiple times with a subset of
    	  the arguments.  For example, with alias grep='command -x grep,
    	  any number of arguments can be specified.
    03-06-14  A bug in which could cause a core dump on some systems with
    	  vi and emacs editors with the MULTIBYTE option has been fixed.
    03-06-06  A bug in which the shell could core dump when a script was
    	  run from its directory, and the script name a symlink to a file
    	  beginning with .., has been fixed.
    03-06-05  A bug in which the shell could core dump when a child process
    	  that it is unaware of terminates while it is calling malloc()
    	  has been fixed.
    03-06-02  An option named globstar (set -G) has been added.  When enabled,
    	  during pathname expansion, any component that consists only of ** is
    	  matches all files and any number of directory levels.
    03-05-30  A bug in which the PATH search could give incorrect results when
    	  run from directory foo and PATH contained .:foo:xxx has been fixed.
    03-05-29  Some changes were made to the code that displays the prompt in edit
    	  mode to better handle escape sequences in the prompt.
    03-05-27  I added = to the list of characters that mark the beginning of
    	  a word for edit completion so that filenames in assignments
    	  can be completed.
    03-05-20  A bug in which read -N could hang on some systems when reading
    	  from a terminal or a pipe has been fixed.
    03-05-19  A bug in which the output of uname from a command substitution
    	  would go to the standard output of the invoking command when
    	  uname was invoked with a non-standard option has been fixed.
    03-05-19  A job control bug which would cause the shell to exit because
    	  it hadn't take back the terminal has been fixed.  The bug
    	  could occur when running a function that contained a pipeline
    	  whose last element was a function.
    03-05-19  A job control timing bug introduced in ksh93o on some systems
    	  which could cause a pipeline to hang if the first component
    	  completed quickly has been fixed.
    03-05-13  The read builtin has been modified so that the builtin editors
    	  will not overwrite output from a previous incomplete line.
    03-05-13  A bug in which the name of an identifier could have the string
    	  .sh. prefixed to it after expanding a variable whose name begins
    	  with .sh. has been fixed.
    03-05-13  A bug in the expansion of $var for compound variables in which
    	  some elements would not be output when the name was a prefix
    	  of another name in the compound variable has been fixed.
    03-05-08  The last item in the ksh93o release on 03-01-02 has been
    	  altered slightly to preserve the leading 0's when the
    	  preceding character is a digit.  Thus, with typeset -LZ3 x=10,
    	  $(( 1$x)) will be 1010 whereas $(( $x) will be 10.
    03-04-25  A bug in which if x is a name reference, then nameref y=x.foo
    	  did not follow x has been fixed.

    03-03-18  --- Release ksh93o  ---
    03-03-18  A -N unary operator was added to test and [[...]] which returns
    	  true if the file exists and the file has been modified since it
    	  was last read.
    03-03-18  The TIMEFORMAT variable was added to control the format for
    	  the time compound command.  The formatting description is
    	  described in the man page.
    03-03-06  A -N n option was added to read which causes exactly n bytes
    	  to be read unlike -n n which causes at most n bytes to be read.
    03-03-03  Three new shell variables were added.  The variable .sh.file
    	  stores the full pathname of the file that the current command
    	  was found in.  The variable .sh.fun names the current function
    	  that is running.  The variable .sh.subshell contains the depth
    	  of the current subshell or command substitution.
    03-03-03  When the DEBUG trap is executed, the current command line after
    	  expansions is placed in the variable .sh.command.  The trap
    	  is also now triggered before each iteration of a for, select,
    	  and case command and before each assignment and redirection.
    03-02-28  Function definitions are no longer stored in the history file so
    	  that set -o nolog no longer has any meaning.
    03-02-28  All function definitions can be displayed with typeset -f not
    	  just those stored in the history file.  In addition, typeset +f
    	  displays the function name followed by a comment containing the
    	  line number and the path name for the file that defined this function.
    03-02-28  A bug in which the value of $LINENO was not correct when executing
    	  command contained inside mult-line command substitutions has been
    	  fixed.
    03-02-19  Since some existing ksh88 scripts use the undocumented and
    	  unintended ability to insert a : in front of the % and # parameter
    	  expansion operators, ksh93 was modified to accept :% as equivalent
    	  to % and :# as equivalent to # with ${name op word}.
    03-02-14  A bug which could cause a core dump when reading from standard
    	  error when standard error was a pty has been fixed.
    03-02-14  The shell arithmetic was modified to use long double on systems
    	  that provide this data type.
    03-02-09  A bug in which a function located in the first directory in FPATH
    	  would not be found when the last component of PATH was . and the
    	  current directory was one of the directories in PATH has been fixed.
    03-02-07  The trap and kill builtin commands now accept a leading SIG prefix
    	  on the signal names as documented.
    03-02-05  A bug in the expansion of ${var/$pattern}, when pattern contained
    	  \[ has been fixed.
    03-02-05  A bug in which .sh.match[n], n>0, was not being set for substring
    	  matches with % and %% has been fixed.
    03-01-15  A bug in which getopts did not work for numerical arguments specified
    	  as n#var in the getopts string has been fixed.
    03-01-09  A bug in which using ${.sh.match} multiple times could lead to
    	  a memory exception has been fixed.
    03-01-06  A bug in the expansion of ${var/pattern/$string} in the case that
    	  $string contains \digit has been fixed.
    03-01-02  A -P option was added for systems such as Solaris 8 that support
    	  profile shell.
    03-01-02  For backward compatibility with ksh88, arithmetic expansion
    	  with ((...)) and let has been modified so that if x is a zero-filled
    	  variable, $x will not be treated as an octal constant.

    02-12-05  --- Release ksh93n+  ---
    02-11-30  A bug that can show up in evaluating arithmetic statements that
    	  are in an autoloaded function when the function is autoload from
    	  another function has been fixed.
    02-11-30  An optimization bug in which an expansion of the form ${!name.@},
    	  which occurred inside a for or a while loop, when name is a name
    	  reference, has been fixed.
    02-11-18  A bug in which modifying array variables in a subshell could leave
    	  side effects in the parent shell environment has been fixed.
    02-11-18  A memory leak when unsetting an associative array has been fixed.
    02-11-14  The code to display compound objects was rewritten to make
    	  it easier for runtime extensions to reuse this code.
    02-11-14  A change was made to allow runtime builtins to be notified when
    	  a signal is received so that cleanup can be performed.
    02-10-31  User applications can now trap the ALRM signal.  Previously,
    	  the ALRM signal was used internally and could not be used
    	  by applications.
    02-10-31  A bug in which signals received while reading from a coprocess
    	  for which traps were set was not handled correctly has been fixed.
    02-10-31  A bug in which a file opened with exec inside a subshell could
    	  be closed before the subshell completed has been fixed.
    02-10-21  A bug in which setting PATH or FPATH inside a function might not
    	  take effect has been fixed.
    02-10-21  A bug which could cause a core dump when a local SECONDS variable
    	  is defined in a function has been fixed.
    02-10-15  A bug in which the associate array name operator ${!array[@]}
    	  could return the same name multiple times has been fixed.
    02-10-15  A bug in which the zero'th element of an associative array was
    	  not getting set when an assignment was made without a subscript
    	  specified has been fixed.

    02-09-30  --- Release ksh93n  ---
    02-09-30  The maximum indexed array size was increased to 16Megs.
    02-09-30  A bug which could cause a core dump when changing attributes
    	  of associative array has been fixed.
    02-09-30  A bug in which exporting an array variable would not export the
    	  0-th element has been fixed.
    02-09-30  A bug in which an array assignment of the form a=($a ...) would unset
    	  'a' before the right hand side was evaluated has been fixed.
    02-09-27  A bug in which the error message for ${var?message} when var was
    	  null or unset did not contain the variable name var has been fixed.
    02-09-27  A bug in which closing file descriptors 0 through 2 could
    	  cause a subsequent here document to fail has been fixed.
    02-09-14  A bug in whence which occurs when the specified name contained
    	  a / has been fixed.
    02-09-14  A bug in the parser for strings of the form name$((expr))=value
    	  has been fixed.
    02-09-14  A for loop optimization bug in which the number of elements in
    	  an array was treated as an invariant has been fixed.
    02-09-09  A bug in which redirection or closing of a file descriptor between
    	  3 and 9 could cause a subsequent here document to fail has been
    	  fixed.
    02-09-09  A bug in which a background job was not removed from the job list
    	  when a subshell completed has been fixed, for example (prog&).
    02-09-03  A bug in which an assignment of the form name=(integer x=3)
    	  could be interpretted as an array assignment rather than a
    	  compound variable assignment has been fixed.
    02-08-19  A command completion bug which occurred on file systems that
    	  are case insensitive has been fixed.
    02-08-19  A bug which could lead to an exception on some systems (for
    	  example FREEBSD) which occurred when setting PATH has been fixed.
    02-08-11  A bug in arithmetic rounding in which a value input as a decimal
    	  string would output as a rounded version of the string has
    	  been fixed.
    02-08-11  A bug in which the last character could be deleted from shell
    	  traces and from whence when called from a multibyte locale
    	  has been fixed.
    02-08-01  A bug which could cause a core dump to occur when a shell script
    	  is executed while a coprocess is running that has closed the
    	  output pipe has been fixed.
    02-08-01  A bug in which command completion in multibyte mode could
    	  corrupt memory for long command lines has been fixed.

    02-06-17  --- Release ksh93n-  ---
    02-06-17  A bug in which user defined macros could cause a core dump in
    	  with MULTIBYE mode has been fixed.
    02-06-17  A bug in which printf format specifiers of the form %2$s were causing
    	  a core dump has been fixed.
    02-06-17  A bug in which setting stty to noecho mode did not prevent the
    	  echoing of characters by ksh when emacs or viraw mode
    	  was enabled has been fixed.
    02-06-17  A bug in which background job completion could cause the sleep
    	  builtin to terminate prematurely has been fixed.
    02-06-17  A bug in which the shell could core dump if getopts was called
    	  when the OPTIND variable contained a negative value has been fixed.
    02-06-10  The edit mode prompt has been modified to handle escape sequences.
    02-06-10  A bug which occurred for interactive shells in which the builtin
    	  cat command was used in command substitution on a file whose
    	  size was larger than PIPE_BUF has been fixed.
    02-06-10  A bug in which the trap on ERR was not being processed when
    	  set inside a function has been fixed.
    02-06-07  A bug in which function definitions could cause the history count
    	  to be decremented by one (and even become negative) has been fixed.
    02-06-05  A bug in read in which share mode could be enabled has been fixed.
    02-05-28  A bug which could occur when the last command of a script was
    	  a case statement and the action selected ended in ;& instead of ;;
    	  has been fixed.
    02-05-23  A bug with unary + introduced in ksh93k has been fixed.
    02-05-07  A bug in substitutions of the form ${var/pattern/string} in which
    	  a backslash was inserted in the replacement string when it contained
    	  a special pattern character has been fixed.
    02-05-01  A bug in the emacs edit mode which occurred in versions compiled
    	  for multibyte character sets which occurred when a repeated search
    	  was requested after a long line had been returned for the previous
    	  search has been fixed.
    02-04-02  vi and emacs edit modes were modified so that tab completion is
    	  disabled when invoked from the read built-in.

    02-03-26  --- Release ksh93m+  ---
    02-03-26  A bug in which  was not handled correctly when used in file
    	  expansion has been fixed.
    02-02-18  A bug in which lines beginning with a # were deleted from here
    	  documents when the here-document delimiter was followed by
    	  a comment has been fixed.
    02-12-06  An optimization bug in which ${!x[@]) was treated as invariant in
    	  a for loop has been fixed.
    02-02-06  A bug in which the ERR trap is not cleared for a script invoked
    	  by name from within a function has been fixed.
    02-01-08  A bug in which a shell script executed from within a subshell
    	  could cause this script to have an invalid pointer leading
    	  to a memory fault has been fixed.
    02-01-07  Added here documents of the form <<< word (as per zsh) which
    	  is equivalent to << delimordelim.
    02-01-07  A bug in which the first word of a compound assignment,
    	  x=(word ...), was treated as a reserved word has been fixed.
    02-01-07  A bug in the handling of  when noglob was enabled and a
    	  substitution of the form ${word op pattern} occurred in the
    	  same word has been fixed.
    02-01-07  A compilation option, CMDLIB_BLTIN in the file OPTION, has
    	  been added.  When this options is set, all commands implemented
    	  in libcmd become shell builtin commands by default.
    02-01-07  A bug in which builtin foo, where foo is already a builtin
    	  would result in the builtin foo getting removed has been fixed.
    02-01-07  A bug which the shell executed a command found in the current
    	  directory when PATH have no valid directories has been fixed.
    01-11-28  The value of $? was not being set when called with exit.
    01-11-28  If the last command was of the form (...) and a trap on EXIT or
    	  ERR was set, and the command inside () modified the trap, then
    	  the original trap wasn't executed.
    01-11-26  The value for 0 is now preceded by the base number when
    	  the base was not 10.
    01-11-26  The default has compilation mode has been changes so that
    	  viraw mode will always be on.

    01-10-31  --- Release ksh93m  ---
    01-10-31  A for loop optimizer bug for subshells contained withing for
    	  loops has been fixed.
    01-10-16  typeset without arguments no longer outputs variable names
    	  that do not have any attributes that are set.
    01-10-16  A bug introduced in ksh93l in which assignments specified with
    	  the exec built-in were not being expanded properly has been
    	  fixed.
    01-10-11  An optimization bug in which ${!x) was treated as invariant in
    	  a for loop has been fixed.
    01-10-11  Unsigned integer variables in bases other than 10 are printed now
    	  expand in that base with the base prefix.
    01-10-10  A number of typos in the self generating man pages for shell
    	  built-ins have been fixed.
    01-10-04  The self generated man pages for hist and fc were not working
    	  correctly and have been fixed.
    01-10-03  Yet another optimizer bug in which shell patterns were
    	  treated as invariants has been fixed.
    01-09-27  Two bugs relating to multibyte history searches and to find
    	  have been fixed.
    01-09-27  A bug introduced in ksh93k in which the PATH searching was
    	  not restored after running a command with an assignment list
    	  has been fixed.
    01-09-26  A bug in which a zero filled field was treated as octal when
    	  converted to integer has been fixed.
    01-09-26  Yet another bug in the optimization of for loops related to
    	  recursive functions with break or continue statements has been fixed.
    01-09-25  The exponentiation operator ** was added to the shell arithmetic
    	  evaluation.  It has higher precedence than * and is left
    	  associative.
    01-09-25  The code was modified to use the ast multibyte macros
    	  and functions for handing multibyte locales.
    01-09-25  The expansion ${parameter:offset:length} now handles negative
    	  offsets which cause offsets to be measured from the end.
    01-09-25  Some spelling errors in the documentation were corrected.
    01-09-24  The /dev/tcp/host/port and /dev/udp/host/port now allow
    	  the ports to be specified by service name.
    01-09-24  The change staring with ksh93g in which the the appropriate
    	  library path variable is prepended with a corresponding library
    	  directory has been modified.  With the new method, only the
    	  library path defined in the file named .paths in the directory
    	  where the executable is found will be modified.  See the
    	  man page for more details.
    01-09-23  The .fpath file (see ksh93h) is no longer looked for in each
    	  directory on the path to locate function directories.  The
    	  file named .paths is used instead.
    01-09-23  A bug in which IFS was not being restored after being changed in
    	  a subshell has been fixed.
    01-09-16  With the vi and emacs edit modes, after a list of command
    	  or functions is generated with = or M-= respectively,
    	  any element from the list can be pasted on the command line
    	  by preceding the = or M-= with a numeric parameter specifying
    	  the position on the list.
    01-09-16  A bug in ksh93l caused command completion not to find aliases
    	  and functions.  Command listing from the edit mode was presented
    	  in reverse order.  This has been fixed.
    01-09-13  Another bug in the optimization of for loops related to subshells
    	  when traps were set has been fixed.
    01-09-07  A change in ksh93l caused brace expansion to stop working
    	  and this has been fixed.
    01-09-04  A bug introduced in ksh93k in which an arithmetic statement
    	  within a function that used name references did not follow the
    	  reference has been fixed.
    01-09-04  A bug introduced in ksh93l in which export -p did not prefix
    	  each export with the word export has been fixed.
    01-08-29  A bug in multibyte input which occurred when a partial multibyte
    	  character was received has been fixed.
    01-08-29  A bug introduced in ksh93l which could cause a core dump
    	  when an assignment list containing PATH is specified inside
    	  command substitution has been fixed.
    01-08-09  Another bug in the optimization of for loops in ksh93l caused
    	  errors in recursive functions using local variables that
    	  contained for loops has been fixed.
    01-07-27  A bug in which IFS would be unset after a command substitution
    	  inside a here document has been fixed.
    01-07-26  To conform to the POSIX standard, if you invoked ksh name,
    	  and name does not contain a /,  it will first try to run
    	  one in the current directory whether it is executable or not
    	  before doing a path search for an executable script.  Earlier
    	  versions first checked for an executable script using the
    	  PATH variable.
    01-07-23  A bug in which unset -f invoked in a subshell could unset a
    	  function defined in the parent has been fixed.
    01-07-16  A bug in the optimization of for loops in ksh93l caused
    	  name references to be treated as invariants has been fixed.
    01-07-09  A bug in which a discipline function applied to a local variable
    	  could cause a shell exception has been fixed.  Discipline
    	  functions can only be specified for global variables.

    01-06-18  --- Release ksh93l  ---
    01-06-18  A bug in assigning integers larger than can be represented as
    	  long integers to floating point variables has been fixed.
    01-06-18  A bug in the handling of unsigned integers (typeset -ui) has
    	  been fixed.
    01-06-04  The evaluation of the PS1 prompt no longer effects the value
    	  of the $? variable.
    01-06-01  A small memory leak from subshells has been fixed.
    01-05-22  A bug in which attributes for variables that did not have
    	  values would be lost after a subshell has been fixed.
    01-05-22  The %R format has been added to convert a shell pattern into
    	  an extended regular expression.
    01-05-22  The escape sequences \, <JOIN>X, \C[.collating-element.], and
    	  \x{hex} have been added to ASCII-C strings and to printf format
    	  strings.
    01-05-20  Patterns of the form {n}(pattern) and {m,n}(pattern) are now
    	  recognized.  The first form matches exactly n of pattern whereas,
    	  the second form matches from m to n instances of pattern.
    01-05-20  The shell allows *-(pattern), +-(pattern),  ?-(pattern),
    	  {m,n}-(pattern}, and @-(pattern) to cause the minimal
    	  match of pattern to be selected whenever possible rather
    	  than the maximal (greedy) match.
    01-05-20  The character class [:word:] has been added to patterns.
    	  The word class is the union of [:alnum:] and the character _.
    01-05-20  Inside (...) pattern groups, the  character is now treated
    	  specially even when in an enclosing character class.  The
    	  sequences, \w, \d, \s are equivalent to the character classes
    	  word, digit, and space respectively.  The sequences \W, \D,
    	  and \S are their complement sets.
    01-05-20  The shell now recognizes pattern groups of the form
    	  ~(options:pattern) where options or :pattern can be omitted.
    	  Options use the letters + and - to enable and disable options
    	  respectively.  The option letters g (greedy), i (ignore case)
    	  are used to cause maximal matching and to cause case
    	  insensitive matching respectively.  If :pattern is also
    	  specified, these options are only in effect while this
    	  pattern is being processed.  Otherwise, these options remain
    	  in effect until the end of the pattern group that they are contained
    	  in or until another ~(...) is encountered.  These pattern groups
    	  are not counted with respect to group numbering.
    01-05-14  When edit completion, expansion, or listing occurs in the
    	  middle of a quoted string, the leading quote is ignored when
    	  performing the completion, expansion, or listing.
    01-05-14  A small memory leak from subshells has been fixed.
    01-05-10  A bug in which open files were not restored after a subshell
    	  that had used exec to replace a file has been fixed.
    01-05-10  Redirection to a null file name now generates an error message.
    01-05-09  The shell now rejects some invalid parameter substitutions that
    	  were previously processed in undefined ways.
    01-05-09  A bug in which the output of select was not flushed before the
    	  read when input did not come from the terminal has been fixed.
    01-05-08  A bug in which job ids would not be freed for interactive shells
    	  when subshells ran built-ins in the background has been fixed.
    01-05-08  The FPATH variable now requires an explicit . to cause the
    	  current directory to be treated as a function directory.
    01-05-08  A bug in read -n when echo mode was disabled has been fixed.
    01-05-07  A bug in which function definitions could be listed as part
    	  of the history has been fixed.
    01-04-30  This release uses a new and often much faster pattern matcher than
    	  earlier releases.
    01-04-30  An optimizer now eliminates invariant parameter expansions from
    	  for while and until loops.
    01-04-30  The variable .sh.match is set after each pattern match (# % or /)
    	  in a variable substitution.  The variable .sh.match is an
    	  indexed array with element 0 being the complete match.
    	  The array is only valid until the next subsequent pattern
    	  match or until the value of the variable changes which ever
    	  comes first.
    01-04-30  A self generating man page has been added to shcomp.  Also,
    	  shcomp now stops compiling when it finds an exit or exec
    	  command and copies the remainder so that it can be used
    	  for standard input.
    01-04-30  The shcomp command was modified so that it can work in an
    	  EBCIDIC environment and that binary scripts are portable
    	  across environments.
    01-04-30  A bug in the handling of a trailing : in PATH has been fixed.
    01-04-30  A bug in which the builtin version of a command would get invoked
    	  even though the full pathname for the command was specified
    	  has been fixed.
    01-04-30  A bug in which read would loose the last character when
    	  reading the last line of a file that did not contain a new-line
    	  character has been fixed.
    01-04-23  A bug on some systems in which in vi mode the end of file
    	  character and end of line character could be swapped has
    	  been fixed.
    01-04-23  A bug on some systems in which invoking a shell script that
    	  did not have execute permission could set the exit value to
    	  127 rather than 126 has been fixed.
    01-04-20  A bug in which read -n from a pipe would block if fewer than
    	  n characters was received has been fixed.
    01-04-09  A bug in which invalid patterns, for example, ) by itself,
    	  was not treated as a string has been fixed so that if i=')',
    	  then [[ $i == $i ]] is true.
    01-04-09  The shell arithmetic now interprets C character constants.
    01-04-09  A bug in which a non-zero return from a function defined
    	  with the function reserved word did not trigger the ERR
    	  trap or exit with set -e has been fixed.
    01-04-02  A bug on some systems, in which characters above 127 were
    	  not displayed correctly in vi or emacs edit mode has been fixed.
    01-04-02  A bug on some systems, introduced in the 'k' point release, in
    	  which the erase character in viraw mode was moving the cursor
    	  to the left without erasing the character has been fixed.
    01-04-02  On some systems the wcwith() function was returning a wrong
    	  value for characters and caused characters to be displayed
    	  incorrectly from the shell edit modes.  A work around for
    	  this problem has been added.
    01-03-26  A bug in which valid scripts could produce syntax errors
    	  when run with locales that considered characters such as "'"
    	  to be space characters has been fixed.
    01-03-20  A bug in which an syntax error in an arithmetic expression
    	  entered interactively could cause the shell to go into
    	  an infinite loop outputting the error message has been fixed.
    01-03-10  ksh93 accepts -l as a synonym for -L in test on systems for
    	  which /bin/test -l tests for symbolic links.
    01-03-10  A bug in parsing scripts in which { and } are used in place of
    	  in and esac in case statements embedded in compound commands
    	  has been fixed.  Use of { and } for in and esac is obsolete.
    01-03-06  A bug in which an argument of the form foo=bar was not
    	  being passed correctly to a traced function whose name
    	  was foo has been fixed.
    01-03-02  Using $(trap -p name) did not print the name of the current
    	  trap setting for trap name.
    01-02-26  Exported floating point variables gave incorrect results
    	  when passing them to ksh88.  This has been fixed.
    01-02-25  A race condition in which a coprocess which completed too quickly
    	  would not allow subsequent coprocesses to start has been fixed.
    01-02-25  The 'g' format specifier is now handled by printf.  It had
    	  inadvertently been omitted.
    01-02-20  The + was not being displayed during an execution trace
    	  with the += assignment operator.
    01-02-19  The error message which occurs when the interpreter name
    	  defined on the #! line does not exist is more informative.
    01-02-19  A bug in which $0 would not be set correctly when a
    	  script with #! was invoked by full pathname from the
    	  directory of the script has been fixed.
    01-02-19  A shell script did not always pick up tty mode changes
    	  made by external commands such as stty which could
    	  effect the behavior of read.
    01-02-19  The -u, -g, and -k unary tests did not give the correct
    	  results when used with negation and this has been fixed.

    01-02-05  --- Release ksh93k+  ---
    01-02-05  The sequence \<newline> inside $'...' was not incrementing
    	  the line count and this has been fixed.
    01-02-05  Modified expansion of "${@-}" so that if no arguments are set
    	  it results in null string rather than nothing.
    01-02-02  memory leak problem with local variables in functions fixed.
    01-01-25  allow arithmetic expressions with float%int and treat them
    	  as ((int)float)%int rather than as an error.
    01-01-19  read -n1 was not working and has been fixed.
    01-01-17  ksh now handles the case in which a here document in command
    	  substitution $() is terminated by the trailing ).  Previously,
    	  a new-line was needed at the end of the delimiter word.
    01-01-02  A bug in which a KEYBD trap would cause a multi-line token
    	  to be processed incorrectly has been fixed.
    00-12-10  Arithmetic integer constants can now have L and U suffices.
    00-12-10  A bug in the processing of arithmetic expressions with compound
    	  variables when the -n option is on has been fixed.
    00-12-08  A bug in M-f and M-b from emacs mode has been fixed.  This
    	  bug only occurs when ksh93 is compiled without MULTIBYTE enabled.
    00-11-29  A bug in which jobs -p would yield 0 for background
    	  jobs run in a script has been fixed.
    00-11-21  A bug in integer arrays in which the number of elements is
    	  incorrect when the ++ operator is applied to a non-existing
    	  element has been fixed.  For example, integer x; ((x[3]++)).
    00-11-20  A timing bug in which the shell could reset the terminal
    	  group to the wrong value in the case that the a new process
    	  changes the terminal group during startup has been fixed.

    00-10-27  --- Release ksh93k  ---
    00-10-27  Using tab for completion now works only when applied
    	  after a non-blank character at the end of the current line.
    	  In other case a tab is inserted.
    00-10-27  A bug in the emacs edit mode for ^X^E has been fixed.
    	  The ^X^E sequence is supposed to invoke the full editor
    	  on the current command.
    00-10-18  A bug in which expansions of the form ${var//pattern/string}
    	  did not work correctly when pattern was '/' or "/" has
    	  been fixed.
    00-10-18  The output format for indexed arrays in compound variables
    	  has been modified so that it can be used as input.
    00-10-18  Assignments with name references (typeset -n) will now
    	  implicitly unreference an existing name reference.
    00-10-17  A bug the += append operator when a single array element
    	  is appended to a variable that is not an array has been fixed.
    00-10-16  A bug in which the SIGCONT signal was being sent to
    	  each process will kill -0 or kill -n 0 has been fixed.
    00-10-12  The arithmetic evaluation portion has been rewritten to
    	  perform a number of optimizations.
    00-10-10  A bug in which name prefix matching ${!name.*} was not
    	  checking name to see if it was a name reference has been fixed.
    00-09-26  A bug in the multibyte version in which the width of for
    	  non-printing characters was not correct has been fixed.
    00-09-12  Made changes to get multibyte editing work on UWIN for windows
    00-09-12  A bug in which multibyte characters would be displayed incorrectly
    	  has been fixed.
    00-08-08  Removed build dependency on iswprint() and iswalph().
    00-07-20  In some cases the read builtin would read more than a single
    	  line from a pipe on standard input and therefore leave the seek
    	  position in the wrong location.
    00-07-05  If the directory / is on the path, a / will not be inserted
    	  between the directory and the file name during path searching
    	  to avoid searching // for systems that treat this specially.
    00-06-26  A bug in which on rare occasions wait could return before all
    	  jobs have completed has been fixed.
    00-06-21  A bug in which backspace did not work correctly during the
    	  R replace directive in vi-mode has been fixed.
    00-06-12  Added variable name completion/expansion/listing  to the set of
    	  completions.  Variable name completions begin with $ or "$ followed
    	  by a letter.
    00-05-09  --- Release ksh93j  ---
    00-05-09  Modified command substitution to avoid using /tmp files when
              run on read-only file systems.
    00-04-17  Modified printf to handle '%..Xc' and '%..Xs' options where X
    	  is not an alpha character.  Previous versions core dumped with this.
    00-04-10  Changes to multibyte editing code were made to use standard
    	  ISO C functions rather than methods devised before the standard.
    00-04-09  Add %H options to printf to output strings with <"'&\t> properly
    	  converted for use in HTML and XML documents.
    00-04-07  Modified getopts builtin to handle <.>..< >in usage string
    	  by invoking specified function.
    00-04-04  Added self generating man pages for bg, fc, fg, disown, jobs,
    	  hist, let, ., and ulimit.
    00-03-30  The append operator += has been added and can be used
    	  for all assignments, strings, arrays, and compound variables.
    00-03-30  Code was modified in several places to support automatic
    	  generation of C locale dictionaries.
    00-03-28  A bug in which the set and trap commands invoked with --name
    	  type arguments would terminate the invoking script  has
    	  been fixed.
    00-03-27  A bug in which the library path variable was not updated
    	  correctly on some systems as described in the 'g' point
    	  release has been fixed.
    00-03-07  printf now returns a non-zero exit status when one of
              its arguments cannot be converted to the given type.
    00-03-05  The return value and error message for a command that
              was found on the path but was not executable was set
              incorrectly.
    00-03-05  A prototype for ioctl() was removed from the vi edit mode.

    00-01-28  --- Release ksh93i  ---
    00-01-28  Most of the built-in commands and ksh itself are now
              self documenting.  Running command --man will produce
              screen output.  Running command --html produces the
              man page in html format.
    00-01-28  The getopts builtin can process command description
              strings to produce man pages.
    00-01-28  A bug in which a script could terminate when getopts
              encountered an error when invoked inside a function
              has been fixed.
    00-01-28  When a symbolic link was specified as the name of
              the script to invoke by name, the value of $0 was
              set to the real file name rather than the link name
              in some cases and this has been fixed.
    00-01-28  A bug in which the precision given as an argument
    	  to printf was not working has been fixed.

    99-03-31  --- Release ksh93h  ---
    99-03-31  The PATH search algorithm has been modified to look
    	  for a file named .fpath in each bin directory and if
    	  found, to search for functions in this directory if
    	  it cannot find the command in that directory.
    99-03-31  When performing pathname expansion, the shell checks
    	  to see whether each directory it reads is case sensitive
    	  or not, and performs the matching accordingly.
    99-03-31  The %T format for printing formatted date/time.
    99-03-31  The emacs and vi modes now handle arrow keys when
              they use standard ANSI escape sequences.
    99-03-31  The TAB key can be used for completion in emacs and viraw mode.
    99-03-31  A bug in setting .sh.editchar during the KEYBD trap
    	  for the MULTIBYTE option was fixed in release ksh93h.
    99-03-31  A bug in shcomp for compilation of unary operators with [[...]]
    	  has been fixed.
    99-03-31  A bug in which the value of $? was changed when executing
    	  a keyboard trap has been fixed.
    99-03-31  The handling of SIGCHLD has been changed so that the
    	  trap is not triggered while executing trap commands
    	  to avoid recursive trap calls.
    99-03-31  A bug in which a local variable in a function declared readonly
    	  would generated an error when the function went out of
    	  scope has been fixed.
    99-03-31  A bug in which \<new_line> entered from the keyboard
    	  with the KEYBD trap enabled has been fixed.
    99-03-31  The error message for a misplaced ((, for example print ((3),
    	  was often garbled and has been fixed.
    99-03-31  A bug in the KEYBD trap in which escape sequences of the form
    	  <ESC>[#~ were not being handled as a unit has been fixed.
    99-03-31  A bug in which ksh would consider expressions like [[ (a) ]]
    	  as syntax errors has been fixed.
    99-03-31  A function defined as foo() without a function body
    	  was not reported as a syntax error.
    99-03-31  A bug in which ksh could run out of file descriptors when
    	  a stream was repeatedly opened with exec and read from
    	  has been fixed.

    98-04-30  --- Release ksh93g  ---
    98-04-30  The pipefail option has been added.  With pipefail
    	  enabled, a pipeline will not complete until all
    	  commands are complete, and the return value will
    	  be that of the last command to fail, or zero if
    	  all complete successfully.
    98-04-30  The name-value pair library uses the cdt library rather
    	  than the hash library.  This change should be transparent
    	  to applications.
    98-04-30  On the U/WIN version for Window 95 and Windows NT,
              when a directory beginning with a letter followed by
              a colon is given to cd, it is assumed to be an absolute
              directory
    98-04-30  When an executable is found on a given path,
    	  the appropriate library path variable is prepended
    	  with a corresponding library directory.
    98-04-30  A bug in which a name reference could be created to
    	  itself and later cause the shell to get into an infinite
    	  loop has been fixed.
    98-04-30  A bug in shcomp relating to compound variables was fixed.
    98-04-30  A bug introduced in ksh93e in which leading 0's in -Z
    	  fields caused the value to be treated as octal for arithmetic
    	  evaluation has been fixed.
    98-04-30  A bug when a name reference with a shorter name than
              the variable it references was the subject of a compound
    	  assignment has been fixed.
    98-04-30  A bug which in which assignment to array variables in
    	  a subshell could effect the parent shell has been
    	  fixed.
    98-04-30  read name?prompt was putting a 0 byte at the end of the
    	  prompt on standard error.
    98-04-30  A bug in [[ string1 > string2 ]] when ksh was run with -x
    	  has been fixed.
    98-04-30  A bug in which the escape character was not processed
    	  correctly inside {...} when brace expansion is enabled
    	  has been fixed, for example {\$foo}.
    98-04-30  A bug in line continuation in here-documents has been
    	  fixed.
    98-04-30  The default base when not specified with typeset -i is
    	  10 in accordance with the documentation.  Previously,
    	  the value was determined by the first assignment.
    98-04-30  A parsing bug in which a # preceded alphanumeric
    	  characters inside a command substitution caused
    	  a syntax error to be reported has been fixed.
    98-04-30  A bug in which a decimal constant represented as 10#ddd
    	  where ddd was more than five digits generated a syntax
    	  error has been fixed.
    98-04-30  A bug in here document expansion in which ${...} expansions
    	  were split across buffer boundaries has been fixed.
    98-04-30  The sh_fun() function now takes third argument which
    	  is an argument list for the invoked discipline function
    	  or built-in.
    98-04-30  A callback function can be installed which will give
              notification of file duplications and file closes.
    98-04-30  When ksh is compiled on systems that do not use fork()
    	  current option settings where not propagated to sub-shells.

    97-06-30  --- Release ksh93f  ---
    97-06-30  Hostnames in addition to host addresses can be given in
    	  /dev/tcp/host/port virtual file names.
    97-06-30  File name completion and expansion now quotes special
    	  characters in file names from both emacs and vi edit modes.
    97-06-30  An empty for list behave like a for list with null expansions.
    	  It produces a warning message with sh -n.
    97-06-30  The code has been modified to work with EBCDIC as well as ASCII.
    97-06-30  A bug which would cause the secondary prompt to be
    	  displayed when a user entered a literal carriage
    	  return has been fixed.
    97-06-30  A bug which caused ksh read -s name to core dump was
    	  fixed.
    97-06-30  A bug with the expansion of \} and \] inside double
    	  quoted strings that also contained variable expansions
    	  has been fixed
    97-06-30  Changes in the ksh93e point release caused autoload
    	  functions invoked from within command substitution
    	  to fail.  This has been fixed.
    97-06-30  A bug in the processing of here-documents that could
    	  prevent variable substitution to occur after $(...) command
    	  substitution for long here documents has been fixed.
    97-06-30  A bug caused by a race condition that could cause SIGTERM
    	  to be ignored by a child process has been fixed.
    97-06-30  A bug which prevented the startup of a coprocess immediately
    	  after killing a running coprocess has been fixed.
    97-06-30  ulimit foobar, where foobar is not an arithmetic
    	  expression, now gives an error message as it did with ksh88
    	  instead of setting the file size limit to 0.
    97-06-30  A bug which could cause an interactive shell to terminate when
    	  the last process of a pipeline was a POSIX function was fixed.
    97-06-30  A bug which could cause command substitution of a shell script
    	  to core dump has been fixed.
    97-06-30  A security hole was fixed in suid_exec.
    97-06-30  Arithmetic functions such as pow() that take more than
    	  one argument, did not work if arguments other than the
    	  first contained parenthesized sub-expression.
    97-06-30  The error message from a script containing an incomplete
    	  arithmetic expression has been corrected.
    97-06-30  A bug which caused a core dump on some machines when
    	  the value of a name reference contained a positional
    	  parameter and the name reference was not defined inside
    	  a function has been fixed.
    97-06-30  Arithmetic expressions now correctly handle hexadecimal
    	  constants.
    97-06-30  A bug in which integer variables could be expanded
    	  with a leading 10# when declared with typeset -i
    	  multiple times has been corrected.
    97-06-30  A bug in which IFS wasn't correctly restored when
    	  set within command substitution has been fixed.
    97-06-30  The _ character is now considered as part of a word
    	  with the M-f and M-b emacs directives as it was in ksh88.
    97-06-30  A bug in brace pattern expansions that caused expressions
              such as {foo\,bar,bam} to expand incorrectly have been fixed.

    96-07-31  --- Release ksh93e  ---
    96-07-31  The math functions, atan2, hypot, fmod, and pow were added.
    96-07-31  When a shared library is loaded, if the function lib_init()
    	  is defined in the library, it is invoked the first time that
    	  the library is loaded with builtin -f library.
    96-07-31  The k-shell information abstraction database option, KIA,
              has been revamped.
    96-07-31  Empty command substitutions of the form $() now work.
    	  whence -v foo now gives the correct result after calling
    	  builtin -d foo.
    96-07-31  A bug in right to left arithmetic assignment for which
    	  the arithmetic expression (( y = x = 1.5 )) did not
    	  yield 1 for y when x was declared typeset -i was fixed.
    96-07-31  printf has been fixed to handle format  containing
    	  and/or  145 correctly.  In addition, characters following
    	  %b in the format string are no longer displayed when
    	  the operand contains <JOIN>.
    96-07-31  A bug in printf that could cause the %E format to
    	  produce unnormalized results has been fixed.
    96-07-31  A bug which causes some arithmetic expressions to be
    	  incorrectly evaluated as integer expressions rather
    	  that floating point has been fixed.
    96-07-31  Functions defined inside a subshell no longer remain
    	  defined when the subshell completes.
    96-07-31  The error message from sh -c ';echo foo' has been
    	  corrected.
    96-07-31  The format for umask -S has been changed to agree
    	  with the specification in the POSIX standard.
    96-07-31  A bug that caused side effects in subscript evaluation
    	  when tracing was enabled for subscripts using ++ or --
    	  has been fixed.
    96-07-31  To conform to the Posix standard getopts has been changed
    	  so that the option char is set to ? when it returns with
    	  a non-zero exit status.
    96-07-31  The handling of \} inside ${name...} has been fixed so
    	  that the  quotes the }.
    96-07-31  A bug that caused the read builtin to resume execution
    	  after processing a trap has been fixed.
    96-07-31  [[ -s file ]] has been fixed so that if file is open
    	  by ksh, it is flushed first.
    96-07-31  In some cases attributes and sizes for non exported
    	  variables weren't being reset before running a script.
    96-07-31  The value of TMOUT was affected by changes make to
    	  it in a subshell.
    96-07-31  The jobs command did not reflect changes make by
    	  sending the CONT signal to a command.
    96-07-31  The error message for ksh -o unknown was incorrect.
    96-07-31  Functions invoked as name=value name, did not use
    	  values from the calling scope when evaluating value.
    96-07-31  A bug in which the shell would reexecute previously
    	  executed code when a shell script or coprocess was
    	  run in the background has been fixed.
    96-07-31  A bug in which an empty here-document would leave
    	  a file descriptor open has been fixed.
    96-07-31  A bug in which $(set -A array ...) would leave a
    	  side effect has been fixed.
    96-07-31  A discipline function for a global variable defined
    	  within a function defined with the function keyword,
    	  incorrectly created a local variable of the same name
    	  and applied the discipline to it.

    95-08-28  --- Release ksh93d  ---
    95-08-28  The  character was not handled correctly in replacement
    	  patterns with ${x/pattern/replace}.
    95-08-28  A bug with read in which the line did not end with
    	  a new-line has been fixed.
    95-08-28  A bug in file name generation which sometimes
    	  appended a . for filenames that ended in / has
    	  been fixed.
    95-08-28  If a process is waited for after a status has
    	  been returned by a previous wait, wait now
    	  returns 127.
    95-08-28  A bug with hist (fc) -e which prevented a command
    	  to re-executed after it had been edited has been fixed.
    95-08-28  A bug which prevented quoting from removing the meaning
    	  of unary test operators has been fixed.
    95-08-28  A bug with typeahead and KEYBOARD traps with the
              MULTIBYTE option set has been fixed.
    95-08-28  Builtin functions can take a third argument which is
              a void*.
    95-08-28  The nv_scan() function can restrict the scope of a walk
              to the top scope.

    95-04-31  --- Release ksh93c  ---
    95-04-31  The expansion of "$@" was incorrect when $1 was the null
    	  string.
    95-04-31  A bug which could incorrectly report a syntax error in
    	  a backquoted expression when a $ was preceded by
    	  has been fixed.
    95-04-31  A bug which prevented the shell from exiting after
    	  reporting an error when failing to open a script
    	  has been fixed.
    95-04-31  A bug that could lead to memory corruption when a
    	  large here document that required parameter or command
    	  substitution was expanded has been fixed.
    95-04-31  A bug that could cause a core dump on some systems
    	  after ksh detected an error when reading a function
    	  has been fixed.
    95-04-31  A bug which could cause a coprocess to hang when
    	  reading from a process that has terminated has been fixed.
    95-04-31  A bug which caused a script to terminate when set -e
    	  was on and the first command of and && or || list
    	  failed has been fixed.
    95-04-31  A bug with here documents inside $(...) when the delimiter
    	  word is an identifier has been fixed.
    95-04-31  A bug which caused $0 to display the wrong value when
    	  a script was invoked as an argument to the . command
    	  and the eval command has been fixed.
    95-04-31  A bug that could cause the built-in sleep to hang
    	  has been fixed.
    95-04-31  A bug introduces in 12/28/93b which caused the backslash
    	  to be removed when it was followed by digit inside double
    	  quotes in some instances has been fixed.
    95-04-31  A bug which could cause a core dump if ksh was invoked with
    	  standard input closed has been fixed.
    95-04-31  A bug which could cause a core dump if typeset -A was
    	  specified for an existing variable has been fixed.
    95-04-31  Variables that were unset but had attributes such as readonly
    	  and export were not listed with readonly, export and typeset.
    95-04-31  Several problems with signals have been fixed.
    95-04-31  A bug which prevented ulimit -t from working has been fixed.
    	  Also, a bug in which failed ulimits could cause a core dump
    	  has also been fixed.
    95-04-31  A bug in expansion of the form ${name/#pattern/string} and
    	  ${name/%pattern/string} has been fixed.
    95-04-31  A bug which caused read -r on a line that contained only
    	  blanks to get a non-null value has been fixed.
    95-04-31  A bug introduced in the 'a' point release in which
    	  ${x='\'} expanded to  when x was unset has been fixed.
    95-04-31  A bug which prevented a trap on EXIT from being executed
    	  when the last command in a script was a function invocation
    	  has been fixed.
    95-04-31  A bug which caused an interactive shell ignore input when
    	  standard error was redirected to a file with exec,
    	  and then restored with exec 2>&1 has been fixed.
    95-04-31  An interactive shell turns on monitor mode even when
    	  standard error has been redirected to a file.
    95-04-31  A bug which could cause standard input to be incorrectly
    	  positioned for the last command of a script has been fixed.
    95-04-31  A bug in the edit modes which allowed walking back in
    	  the history file for more than HISTSIZE commands has
    	  beed fixed.
    95-04-31  A bug which could cause a core dump if variable TMPDIR was
    	  changed between two command substitutions has been fixed.
    95-04-31. A bug which prevented a trap on EXIT from being cleared
    	  has been fixed.
    95-04-31  A bug fixed for the v directive in vi MULTIBYTE has been
              fixed.
    95-04-31  Code to for IFS handling of multibyte characters has
              been added.
    95-04-31  The displaying of multibyte strings in export, readonly,
              typeset, and execution traces has been fixed.
    95-04-31  Variables inside functions are now statically scoped.
    	  The previous behavior was never documented.
    95-04-31  Variables inside functions are now statically scoped.
              The previous behavior was never documented.
    95-04-31  A few changes have been made to the name-value library
              that affect built-ins that use disciplines.  The
              changes allow disciplines to be shared by variables
              and should make it possible to add new disciplines
              without recompilation.
    95-04-31  The name-value library interface has undergone significant
              change for this revision.  See the new nval.3 man page.

    94-12-31  --- Release ksh93b  ---
    94-12-31  Variables inside functions are now statically scoped.
              The previous behavior was never documented.
    94-12-31  If IFS contains two consecutive identical characters belonging
    	  to the [:space:] class, then this character is treated as
    	  a non-space delimiter so that each instance will delimit
    	  a field.  For example, IFS=$'\t\t' will cause two consecutive
    	  tabs to delimit a null field.
    94-12-31  The getopts command has a -a name option that specifies a
    	  name that will be used for usage messages.
    94-12-31  A bug which caused unset RANDOM to dump core has been
    	  fixed.
    94-12-31  A bug which prevented return for terminating a profile
    	  or ENV file has been fixed.
    94-12-31  A bug which prevented standard input from being
    	  directed to /dev/null for background jobs when
    	  monitor mode was turned off has been fixed.
    94-12-31  Statements of the form typeset -options var[expr]=value
    	  did not perform substitutions on expr as expected.
    94-12-31  A bug which prevented the shell from sending a HUP
    	  signal to some background jobs that were not disowned
    	  has been fixed.
    94-12-31  A bug which allowed a script to trap signals that are
    	  ignored at the time that the shell was invoked by exec
    	  has been fixed.
    94-12-31  A bug which could cause a core dump when a discipline
    	  function was unset within a discipline was fixed.
    94-12-31  The typeset builtin now accepts a first argument of
    	  + or - for compatibility with ksh88.
    94-12-31  For compatibility with ksh88, the results of expansions
    	  of command arguments will treat the extended character
    	  match characters ()|& as ordinary characters.
    94-12-31  A bug which caused read to fail on a file that was
    	  open for read/write with <> when the first operation
    	  was print or printf has been fixed.
    94-12-31  When a job is suspended, it is put on the top of
    	  the job list as required by the POSIX standard.
    94-12-31  The value of OPTARG when an option that required
    	  an argument but didn't have one was incorrect in the
    	  case the the option string began with a :.
    94-12-31  A bug which caused the terminal to get into a bad
    	  state with some KEYBD traps in vi-mode has been fixed.
    94-12-31  A bug which caused an invalid trap to cause a script
    	  to terminate, rather than just return an error, has
    	  been fixed.
    94-12-31  Backreferencing sub-expressions in patterns and replacement
    	  strings now works.
    94-12-31  A bug in chmod which caused the -R option to fail has
    	  been fixed.
    94-12-31  More signal names have been added for Solaris

    94-06-30  --- Release ksh93a  ---
    94-06-30  An expansion bug which causes portions of a word after
    	  a $((...)) expansion that contains a nested $var expansion
    	  to be lost has been fixed.
    94-06-30  A bug that caused a core dump when a script that did not
    	  have PWD set and did a cd inside command substitution
    	  has been fixed.
    94-06-30  A bug which caused a core dump on some machines when
    	  the LANG variable was assigned to has been fixed.
    94-06-30  A bug which incorrectly handled set disciplines that
    	  performed arithmetic evaluation when the discipline
    	  was called from the arithmetic evaluator has been fixed.
    94-06-30  A bug caused by an EXIT trap inside a function that
    	  was executed in a subshell was fixed.
    94-06-30  If foo is a function, and not a program, then command foo
    	  now reports that foo isn't found rather than invoking foo.
    94-06-30  The previous version incorrectly listed -A as an
    	  invocation option.  The -A option is only for set.
    94-06-30  A bug was fixed which caused ksh to loop when execution trace
    	  was enabled and the PS4 prompt required command substitution.
    94-06-30  A bug which could cause the job control switch character
    	  to be disabled when a script that enabled monitor mode
    	  terminated was fixed.
    94-06-30  A bug in the macro expansion global replacement operator //,
    	  when the pattern began with a [ or +( has been fixed.
    94-06-30  A bug which prevented ~ expansion from occurring when
    	  it was terminated with a colon inside an assignment
    	  has been fixed.
    94-06-30  A bug in the dot command which prevented autoload functions
    	  from working has been fixed.
    94-06-30  A bug which caused a variable to be unset if the
    	  its value were expanded inside a set discipline has
    	  been fixed.
    94-06-30  Whence -a now longer reports that a defined function
    	  is undefined.
    94-06-30  A bug on some systems in which $0 would be incorrect
    	  in scripts invoked by name has been fixed.
    94-06-30  Here documents with an empty body now work.
    94-06-30  A bug which disabled argument passing and resetting
    	  of options for a script invoked by name inside a
    	  function has been fixed.
    94-06-30  A bug in which an EXIT trap set the caller of a function
    	  would be executed if a command called inside a function
    	  was not found has been fixed.
    94-06-30  A bug which allowed a script to trap signals that are
    	  ignored at the time that the shell was invoked has
    	  been fixed.
    94-06-30  A bug which caused 2<&1- when applied to a shell built-in
    	  to leave standard input closed has been fixed.
    94-06-30  A bug which caused the shell to incorrectly parse
    	  $() command substitutions with nested case statements
    	  has been fixed.

### pax changes

    05-12-14 pax: fix --filter to work for --read and expand command %(...)
    05-06-07 format.c: fix inter volume fill logic
    05-05-28 pax: improve "junk data after volume" checks
    05-05-22 pax: fix --append for the formats that can handle it
    05-05-18 pax-flash.c: add solaris flash embedded archive format read
    05-03-19 options.c: -l == --link (not --local) per posix
    05-02-08 misc.c: fix interaction between delta and --meter
    05-02-07 delta.c,pax.h: don't output delta when src==tar -- duh
    04-12-25 bio.c: fix (*putheader)() return value logic, especially for ENOSPACE
    04-12-08 listformat now handles high resolution time
    04-12-01 tv.h,tv.c,features/tv move to libast
    04-09-25 bio.c: fix ap->io->count for skipped data -- wow
    	 pax-rpm.c: fix header padding logic
    04-09-01 bio.c: fix bread() seek logic
    04-08-11 pax.c,options.h,options.c: add -C,--chmod=mode to control header modes
    04-08-05 bio.c: fix bread() pointer arith 64 bit assumption (pax#15)
    04-08-01 delta.c: fix checksum 32-bit logic (pax#11) (testpax#01)
    04-07-19 delta.c,format.c,pax-tar.c: { O_RDONLY O_WRONLY O_RDWR } are values
    04-03-17 pax-tar.c: add tar_putepilogue to *all* tar variants
    	 format.h: let pax-tar.c determine tar variant order
    	 bio.c: fix a few printf format long long mismatches: %ld => %I*d
    	 format.c: map ident buffer CC_ASCII => CC_NATIVE
    04-02-29 format.c: drop ap->format=0 for possible deltaverify()
    	 format.c: handle CC_ASCII=>CC_NATIVE getprologue() header translation
    	 options.h,options.c: add --forceconvert to force --from
    04-02-25 pax.c: regcomp REG_SHELL => REG_LEFT|REG_RIGHT
    04-02-24 pax.c: add --action
    	 copy.c: fix file list peek premature ' => ' ' bug
    	 pax.tst: add --action,--checksum,--filter,--install tests
    04-02-21 file.c: fix VPATH state.pwd corruption
    04-02-14 add -F --fsync to call fsync(2) for each copied file
    04-01-27 bio.c: fix bget() buffer size alignment/mismatch overflow
    04-01-24 pax-*.c: use paxlib.h interfaces
    04-01-03 pax-cab.c: move to paxlib/cab as standalone plugin
    	 pax-calib.c: move to paxlib/calib as standalone plugin
    04-01-01 add --passphrase=passphrase, -E
    03-12-24 pax-zip.c: move to paxlib/zip as standalone plugin
    03-12-18 paxlib.h: add paxpart(), link with -lcodex for paxlib plugins
    03-12-05 pax-zip.c: fix EXT header logic
    03-12-01 rename OPT_delta_size to OPT_uncompressed: !=0 => compressed
    	 list compression % in delta op field
    03-11-25 paxlib.h: add external format dll interface
    03-11-20 pax-calib.c: add file suffix heuristics
    03-11-19 pax-calib.c: convert ibm -INC [edit comment] to COPY [REPLACING]
             pax-calib.c: handle line size > 80
    03-11-11 pax-pds.c: add mvs pds listing
    03-11-06 regression tests finally pass after Format_t method switch
    03-10-31 Format_t converted to true method
    03-10-20 initial readonly ca-librarian support
    03-10-01 add pax delta format -- groundwork for vcdiff deltas
    03-09-23 pax.tst: change test file names for same ascii/ebcdic sort
    	 pax.c: extended header values with length need no quoting
    03-09-11 default output format now ustar -- should eventually be pax
    	 format rename: tar=>oldtar, ustar=>ustar|tar
    	 add --testdate=date regression test hook
    	 add --uid=id --gid=id
    	 ascii vs. ebcdic cleanup
    03-09-10 private static cleanup
    03-09-09 xopen sync and { pax ustar } format fixes, <tv.h> interface
    03-06-21 format.c: add ccode conversion check to putheader()
    03-05-28 file.c: fix -vrw directory double list
    	 update to new <ccode.h> interface
    03-03-05 pax.c: tgz => ustar:gzip, tbz => ustar:bzip
    03-02-28 pax.c: handle a few common -x aliases
    03-01-14 misc.c: fix meter sign overflow for sizeof(off_t)==sizeof(int)
    02-12-13 format.c: fix TNEF bug that did bget(n) for n>buffersize
    02-10-23 misc.c: fix meter buffer overflow
    02-10-20 pax: drop experimental OMF; use ardirlist() to list ar types
    	 pax: add -t for x/open
    02-10-18 pax: add tar/ustar swap and inter-volume junk block checks
    02-09-09 format.c: handle all 11 octal digits in cpio format size
    02-09-05 file.c: fix chmod() loop at exists=0011 on case ignorant filesystems
    02-08-19 pax: cmd line patterns applied before -i or -s path edits
    	 pax: add posix -c for --invert
    02-08-06 pax: change --meter to use * instead of non-portable inverse video
    02-07-17 pax: handle gnu tar largefile size extension
    02-06-26 pax: fix regsubexec() edited symlink text buffer clobber
    02-05-24 pax: update to use regsubcomp(),regsubexec()
    02-05-07 pax: use <ardir.h>,-lardir for library archives
    02-04-23 pax: add dos omf library read
    01-12-07 pax: fix --meter to retain paths containing " -- "
    01-12-06 pax: fix --meter to stop at 100% (don't tell coach)
    01-10-20 pax: describe the 4 operation modes in separate paragraphs
    01-10-18 pax: fix --meter for paths containing <\>n\r\v
    01-09-06 pax: add ms tnef (transport neutral encapsulation format) archive read
    01-08-11 pax: fix tar_checksum() w.r.t. CC_NATIVE!=CC_ASCII
    01-06-28 pax: fix --from --to bio logic that sometimes double converted
    01-04-24 pax: --from & --to now associated with archive instead of global state
    01-04-17 pax: --from conversion only done if no control chars in first 256
    01-04-01 pax: fix --intermediate to create missing dirs first
    01-02-27 pax: add lchmod() and lchown() for symlink() restoration
    01-02-08 pax.tst: add -L and -P to symlink edit test
    01-02-07 format.c: fix malloc off-by-one for vdb format read
    01-02-02 file.c: fix duplicate -s map in addlink()
    00-12-20 bio.c: include <sys/ioctl.h> for systems that miss _IOW() etc.
    00-10-31 format.c: handle rpm 4.0 and newer
    00-09-20 copy.c: always allocate state.tmp.lst!
    00-08-31 change paths in delta archive: -rf i -z - -s e -wf o -z - [almost]
    00-08-11 copy.c: drop memalign() call for _std_malloc==1 in libast
    	 copy.c: save filter path from sfgetr() reset
    00-06-01 pax: fix mime format size by dropping last \r
    00-05-26 pax: astconf("CONFORMANCE",0,0)=="standard" inhibits some extensions
    	 pax: check USTAR file and link name lengths
    00-04-01 pax.tst: export TZ=EST5EDT; new tests should be UCT
    00-03-11 pax: add encapsulated mime format read
    	 pax: fix vdb block count
    00-02-14 pax: fix hard link read that didn't apply -s edit
    	 pax: logical|physical filter options
    00-01-04 pax: fix rpm embedded archive hard seek
    	 pax: --filter implies --nodescend
    	 pax: add --meter
    	 pax: handle ms PORTAR '' => '/' path separator
    99-11-19 pax: try `ratz -c' if `gunzip' not found
    99-11-11 add --checksum, --install, --local, --preserve=s
    99-11-04 fix zip for archives with EXTLOC headers
    	 don't generate //* file names
    99-10-31 pax: add tgz == tar:gzip, --filter=-
    99-08-11 bio: fix end of medium handling
    99-06-01 restore -T == --test
    99-05-28 pax: add rpm read
    99-05-21 pax: fix -rw umask(0) bug
    99-05-17 pax: fix chmod() delay for ug+s,+t
    99-05-11 nocom: long options
    99-05-09 pax: sfopen(sfstdin,0,"rt") for input file list
    99-05-01 pax: state.xdev => FTW_MOUNT!!
    99-04-01 pax: fix Integral_t for sizeof(long)==8
    	 pax: fix ]] in optget usage
    99-03-17 pax: better st_mode preservation
    99-03-01 pax: fix dirprefix() prune to work in all cases
    	 pax: add savepath() to handle >PATH_MAX paths
    99-02-06 pax: update to new optget()
    99-01-11 pax: add bzip2 compression support
    98-10-01 pax: fix -rw hard link bug
    	 pax: fix -o preserve=* option.level inconsistencies
    98-08-11 cpio.sh: fix with getopts
    	 pax: increase -rw default buffer size
    	 pax: use REG_DELIMITED to parse -s
    98-04-01 fix tar delta bug that set st_size=0 before consuming delta head/tail
    	 pax -<flag> '?' lists help info for flag
    	 fix -rw bugs introduced by recent delta fixes
    	 testpax: add regression tests
    	 fileout: add EIO memalign fallback to track sgi bug
    98-03-19 fix tar delta epilogue check
    	 fix delta pass checks
    	 fix off_t vs. file size mismatches
    98-03-17 umask(0) only if -o preserve=* in effect
    	 add File_t.ro to mark readonly files/paths
    98-02-14 add -o intermediate to copy output to intermediate before commit
    98-01-23 use %I#d scanf format to get off_t right
    98-01-11 -K == -o keepgoing
    	 -x format on read accepts that format only (useful with -o keepgoing)
    97-12-07 add 4 NULs to work around gunzip bug that peeks beyond EOF
    97-11-11 use PROC_FD_PARENT to let procopen() close parent fd
    97-10-31 cab list works; anyone have LZX or QUANTUM decompress code?
    97-09-22 fix vdb format write
    97-08-11 fix omitted missdir() call
    97-07-17 -r attempts chmod u+w along with missdir and remove
    	 -rl preserves existing links if possible
    	 beginnings of cab file read
    97-05-09 fix putepilogue() with off_t boundary
    96-12-25 zip archive header magic fix
    	 use MTIOCGETBLKINFO to determine default tape blocksize
    	 -o eom=!command uses $(command read|write part [file]) for next file
    	 -s ',.*,-,' cats to stdout
    	 -x pax support for >2GB file size
    96-11-28 off64_t tweaks
    	 drop -r -w -x order dependency
    	 undo ccmaps() in bunread()
    	 add explicit O_RDONLY checks (!= 0 on some systems)
    96-10-11 change to <ccode.h> from mem[ae]to[ae]()
    96-08-11 add -o to={ascii|ebcdic} -o from={ascii|ebcdic} from mvs
    96-02-29 enable -rw setfile() -- why was it disabled in the first place?
    	 fix stdin file list peek bug that dropped leading files
    96-02-09 handle zip archives on input
    96-01-18 AT&T Research now
    	 switch to <regex.h>
    95-11-24 don't check for compressed format if already uncompressing
    95-11-18 ignore empty file list lines
    95-10-31 fix and compensate for cpio header hard link size bug
    95-10-11 drop "blocking ignored in pass mode" message
    	 aschk symlink data need not have trailing ' '
    95-09-01 fix nocom  handling
    95-08-11 builtin nocom for -o filter=nocomment
    	 more delta tracing
    	 vd02 delta algorithm
    95-07-17 fix -w output to stdout initialization bug
    	 fix stdin file list peek bug that dropped trailing files
    95-05-09 don't check member count unless its really a trailer
    	 sfkeyprintf lookup string arg is now the format conversion character
    	 initialize output archive for -rw to stdout archive
    	 misc.c had putc() and fgets()!
    	 unused var cleanup
    	 add return to listprintf()
    	 fix delta pass missing dir fd bug
    	 fix dirprefix for /
    	 add bax.sh as an *example*
    95-04-01 with proto va_start() must come before any arg references
    	 fix delta bug that failed to mark emitted or skipped members
    	 allow -z for patch deltas
    	 be sure to set ap->format before binit()
    	 fix ordering bug that botched most deltas!
    	 use file.name (after -s maps) rather than file.path in delta hash
    	 fix bget() bug that skipped checksum
    95-03-19 first round with POSIX 1003.2 1995
    	 handle file holes on input
    	 delta header contains member index and trailer size
    	 delta trailer contains member checksum
    	 delta epilogue contains member count
    95-03-01 internal redesign using Archive_t handles instead of global state
    	 -o ordered (-O) allows single pass through base
    95-02-14 make -u work with VPATH
    	 -x composes gzip,compress,delta,delta88,ignore,patch with real formats
    	 -x gzip:tar, -x gzip,tar, -x 'gzip tar' accepted
    	 -x delta is equivalent to -z -
    	 -o delta deleted
    	 fix OPT_owner null dereference
    	 fix archive pass bug that didn't update DELTA_create members
    95-01-19 detect compress and gzip on input
    	 add -f -z grouping with -r -w to support -r -f -z -w -f -z
    	 fix a few compress/delta ineraction bugs
    	 add -t s[#]k[#] to skip all [#] and/or keep all [#] tape volumes
    	 use new <align.h> ALIGN_ identifiers
    95-01-11 add s option to -s to stop on success
    	 add delta 94 (vdelta)
    	 add long option names
    	 deprecate most flag options
    	 DELTA_TEMP <64K avoids temp file
    	 add -o delta=patch for patch archives
    94-12-25 add lib/pax/*.fmt args files for unknown formats
    	 fix mknod() calls to use the right file type!
    94-11-11 fix ar out of phase warning
    94-08-11 add -Rh'header' and -Rt'trailer' for vdb write
    	 -e now works for -rw
    93-08-11 add vdb `virtual database' r/w format
    93-06-11 fix bug that didn't output non-regular files
    	 -w now uses FTW_POST to preserve dir modes
    93-04-01 handle PORTAR long member name table
    92-04-01 copy all 0 length files out regardless of read permission
    91-08-11 add check for garbage after end tar implementation bug
    90-10-01 add mips ar format out of date check
    90-08-11 header/trailer alignment now table driven
    90-07-20 fix binary output bug that set header size and time to 1
    90-06-01 fix misc delta compression bugs
    90-05-01 fix DELTA_create bug that did not check COMPRESS
    90-03-28 bump regular output block size to 8k
    90-02-11 delta changes held off by #if new_delta_format until new libdelta
    	 base archive checksums incompatible with previous versions
    90-02-06 fix newio() bug that looped when write() returned 0
    90-01-25 add proposed posix 1003.1b archive/interchange format
    	 tune buffering
    	 change -R option for general record support
    	 generalize delta id file name -- incompatible with old format
    	 prepare for new libdelta and subsequent incompatibilities
    89-12-01 add self-delta support, delete -A option (one algorithm with versions)
    89-11-18 fix dir mode restoration bug
    89-11-11 fix delta update with older file
    89-10-31 add portarch and randarch readonly object formats
    89-10-11 allow -f with -rwz
    89-10-01 add -Bmaxblocks and -C to match latest tar/cpio extensions
    89-08-22 align read() buffers to IOALIGN
    89-07-27 add EFBIG & EDQUOT checks to newio()
    89-07-04 fix cpio binary header mtime and size swab bug
    	 fix -rw bug that makes it work now!
    	 redo file post processing restoration
    89-05-11 handle GNU-tar USTAR format botch
    	 missing intermediate directories inherit mode of nearest ancestor
    	 fix names on stdin bug that only did -P
    	 incorporate lar changes from David Muir
    	 expand -R arg syntax
    	 handle ansi/ibm D,F,S,U,V formats on output
    89-03-28 fix bget() buffer boundary error for reads < buffersize
    89-03-01 ignore DELTA_PASS file set*() calls
    89-02-22 fix bread bug for 0 count and bget memcpy overlap
    89-01-18 fix copyout() rfd<0 delta bug that generated multiple entries
    89-01-11 fix dirsize!=0 bug; change ftwalk XDEV implementation
    88-12-11 fix symlink->nowhere bug
    88-11-22 add vmsbackup readonly format; fix lseek validity checks
    88-11-17 add -T040 to simulate tape device blocking on input
    88-11-11 add s5r4 asc and aschk formats
    88-11-07 hard links and deltas don't cross volumes
    88-11-01 add -n to read exact file list
    88-10-20 add bread(0,...) to skip, bget() and bput() io optimizations
    88-10-11 fix delta ops to use pattern args
    88-10-04 fix argc bug that botched -rw with file args
    88-10-01 for delta update, verify that untouched files match base archive
    88-09-30 fix allocate() bug: malloc() -> calloc()
    88-08-23 use libx/memsum() for checksum calculations
    88-08-20 add `![command]' to end of medium replies
    88-08-18 table of contents output to stdout
    88-08-08 update for libx/ftwalk() and libx/strls()
    88-07-28 streamline ftwalk() interface
    88-07-21 finish up -a and -u tar compatibility
    88-07-17 add cpio.sh and tar.sh interface scripts
    88-07-15 convert to pax

### html changes

    05-10-15 mm2html.sh: add BP name=value parameters
    05-10-10 mm2html.sh: add .CE, .BP *.@(gif|png) ... => <IMG...>
    05-02-22 htmlrefs.c: rel=internal ignored if --external
    05-02-14 mm2html.sh: add .xx linkframe="" for no target=_top
    05-02-01 mm2html.sh: IFS may be unset!
    05-01-11 mm2html.sh: add --top
    04-12-22 mm2html.sh: fix .xx link unverified rm
    04-08-01 htmlrefs.c: symlink only if different mtime
    04-06-18 htmlrefs.c: add -S,--symlink to symlink() rather than copy
    04-04-26 troff2html: handle .ta
    04-04-04 mm2html: .xx link|text separated by tab for table entry urls
    04-02-29 mm2html: .TS box => void lines
    03-08-11 mm2html: handle man .TH args>2
    03-03-25 mm2html: table border size '' => 0
    03-02-06 troff2html.c: fmtquote() FMT_ALWAYS update
    02-10-24 mm2html: viewgraph link target is _top too
    02-10-15 mm2html: ident footer is now a TABLE instead of a DIV
    02-08-30 mm2html: .AL with no args is equivalent to .NL
    02-08-26 mm2html: fix .VL mark indent logic
    02-08-19 mm2html: ignore .fp
    02-06-09 mm2html: expand mailto address pattern match
    02-05-31 mm2html: check .vG arg count before shift
    	 mm2html: \ => &#0092;
    02-03-17 mm2html: add .SG no-op
    	 mm2html: check .EX figure# label args
    	 mm2html: add .so/.sn dir search to .BP
    02-03-15 mm2html: add LC_NUMERIC=C for floating point constants
    02-02-14 mm2html: shorten indentation
    02-01-16 mm2html: handle .so and .xx in getline
    	 mm2html: .sn and .so look in dir of including file
    01-10-20 htmlrefs: fix <!--INTERNAL--> filter delete detection, GLOB_AUGMENTED
    01-05-09 mm2html: ignore a few more requests
    01-05-04 mm2html: more tbl adjustments from Bruce Lilly
    01-05-02 mm2html: tweak tbl column spacing, handle .TH [N]
    01-05-01 mm2html: tbl fixes
    01-04-27 mm2html: fix .SH,.SH indentation; ignore { .nh .hc .hy }
    01-03-22 mm2html,troff2html: ignore { .hw .lw }
    01-03-01 troff2html: fix bug that treated 0093;? as #0093;?
    01-02-28 troff2html: add  and fix macros for y2k -- oops
    01-01-31 htmlrefs: fix nul char bug in <!--INTERNAL--> filter
    01-01-01 mm2html: fix incorrect \h'... #local refs
    	 mm2html: append <!--LABELS-->...<!--/LABELS--> for second pass
    	 mm2html: add .xx [no]index to inhibit or restart index labels
    	 mm2html: add .xx noFOO, .xx [no]index
    	 mm2html: .xx begin|end before <BODY> gets copied to <HEAD>
    	 mm2html: identification trailer aligned right
    	 htmlrefs: <!--INTERNAL--> in index.html <HEAD> skips file/dir
    00-12-14 mm2html: fix tbl colspan
    00-12-12 mm2html: ignore bgcolor for table with no box
    00-12-07 download: .tar.gz => .tgz
    	 htmlrefs: add --delete
    00-12-05 mm2html: add .PM
    	 mm2html: <id@id.id...> => mailto:
    00-11-27 mm2html: --frame is now 1 level instead of 2; no *-body and *-head
    	 mm2html: add .IS ... .IE indentation
    	 mm2html: .LR foo (1) generates man link
    	 htmlrefs: add https support
    00-10-31 htmlrefs: remove if internal filter leaves <= 1 line
    00-05-25 mm2html: add viewgraph outline and navigation
    00-05-11 mm2html: add .vG viewgraph macros
    00-03-04 htmlrefs: add <LINK rel=dynamic>
    00-02-14 htmlrefs: add .htaccess and <LINK> checks
    	 mm2html: add .xx ref=...
    	 mm2html: use "..." tag attribute quote instead of '...'
    	 mm2html: .BL => <UL> square circle disc
    00-02-03 mm2html: fix -o nohtml.ident
    00-01-20 mm2html: fix -o quoted arg parse
    	 htmlrefs: add --perlwarn for embedded perl constructs
    99-08-11 mm2html,troff2html: add .xx begin=x end=x
    	 mm2html: handle simple .TS ... .TE; room for improvement
    	 mm2html: fix <TABLE><TR>...</TR></TABLE> nesting
    	 mm2html: add SEE ALSO hot links
    	 mm2html: hot link man name not (section)
    99-05-17 download,html2db,mm2html: long options
    99-05-13 html2rtf: long options
    99-04-01 fix .xx link
    	 long options, macro search bug fix
    99-01-01 html2rtf: fix </LI> with no <LI> core dump
    98-04-01 add company corporation location meta.* organization
    97-05-09 info tollbar=path for junk before </BODY>
    97-05-01 \h'0...' for hyperlinks
    97-04-01 first release

### proto changes

    05-12-25 ratz.c: fix sear CreateDirectory(tmp) permissions
    05-09-16 proto.c: add <stdio.h> for standalone rename() prototype
    05-07-31 proto.c: finally trust __STDC__ headers
    05-05-11 since.sh: add
    04-10-24 sear.sh: note in docs that ratz options apply to sear .exe's
    04-10-22 proto.tst: add array arg prototype tests
    04-10-01 proto.c: add CPL docs
    04-09-24 sear.sh: add cc -c to avoid nativepp "ratz.c" message
    04-05-20 proto.tst: add `int fun __P((int));' test
    04-03-19 proto.c: add { .cpp .hpp }, fix standalone -c parse
    04-02-29 proto.tst: add -f -p option tests
    04-01-14 proto.c: add suffix-comment table
    04-02-11 proto.c: default comment style set to match file suffix
    03-06-21 proto.tst: add T_INVALID ? splice bug test
    02-07-31 sear.sh: make sure output files has a suffix
    02-03-12 proto.c: add type=free
    02-01-07 proto.tst: add TEST 05 -- no fix yet
    01-12-12 sear.sh: fix rc ICON path  escapes
    01-10-31 sear.sh: add sear.ico
    01-10-16 sear.sh: _SEA_* => _SEAR_*
    01-10-05 sear.sh: rename from sea.sh
    01-09-11 sea.sh: add
    01-06-26 proto.tst: add another buffer boundary test (large of course)
    01-04-01 proto: preserve file mode for -r
    01-02-06 proto.tst: add (finally)
    99-11-19 add --license, --shell, --copy, --verbose
    99-08-11 long options

### bzip changes

    02-02-14 bzip2.c: fix uwin core dump
    02-01-24 bzip2.c: use _PACKAGE_ast touch(3) instead of <utime.h>
    	 bzip2.c: fix strstr() loop
    01-01-01 bzip2.c: include bzlib.h first
    99-01-01 package for ast

### tw changes

    05-06-13 tw.c: sort:path == sort:name, handle ,-separated keys
    05-03-07 xargs.c: fix -i to treat each line as an arg
    05-02-23 tw.c: add --error-exit=code to exit if cmd exit >= code
    	 find.c: ignore cmd errors
    	 cmdarg.c: fix bug that dropped a path on cmd error
    05-01-11 tw.c: --local test for directories only
    04-12-24 tw.c: cmd non-zero exit status causes tw to terminate
    04-12-08 find.c: fix `option ... path ... option' logic *again*
    04-08-01 find.c: really fix -size
    04-04-15 tw.tst: add %s scanf tests
    04-04-01 find.c: handle `-sort -KEY' and `-sort KEY'
    	 find.tst: add `-sort -name' for uniform results -- duh
    04-02-26 tw.tst: add scanf tests
    03-12-02 find.c: -print does not require leaf stat -- duh
    03-11-16 find.tst,tw.tst: add leading . pattern match tests
    03-11-14 updatedb.sh: add /proc to default prune paths
    03-09-23 tw.c: -L => ~FTS_SEEDOTDIR
    02-01-10 tw,find: add sfsync(sfstdout) check
    02-11-07 tw: add type==DOOR (solaris S_ISDOOR)
    	 find: add -type D (solaris S_ISDOOR)
    02-07-17 updatedb.sh: add --local to skip non-local directories
    02-04-18 find: fix lookup() bug that dumped on unknown keys
    02-04-03 find: add FTW_DELAY logic, fix directory -empty
    	 tw: add FTW_DELAY logic
    02-01-16 tw: add symlink to EXPRESSIONS doc
    01-10-31 tw,find: add slocate(1) refs
    01-07-17 xargs: fix -e -i -l option parse for backwards compatibility
    	 cmdarg(): fix CMD_INSERT copy that omitted leading chars
    01-05-02 tw: fix -a to use CMD_POST instead of CMD_INSERT
    01-02-06 tw,find: move --local test fslocal()
    01-01-01 find: fix -newer -anewer -cnewer -perm
    00-11-14 updatedb: add --dir-format (it was already the default)
    00-08-11 tw: add --recursive
    00-05-23 cmdarg: fix -a strchr loop (thanks dr ek)
    00-05-01 find: add [f]printx and %[xX] -- or use tw
    00-03-12 find: fix multiple PRINT with -print imbeded in ( ) -o ( )
    99-10-11 tw: tighten up --generate exit codes
    	 updatedb: add a few options
    99-08-11 find: fix -size
    	 find: undef NOGROUP NOUSER -- (net)bsd stomps again
    99-07-17 xargs: newline *and* space separated args -- duh
    99-05-24 find: fix PRINT!=0 enum logic bug
    	 find.tst,tw.tst: add
    99-05-21 tw: fix print --man
    99-05-09 tw,xargs: sfopen(sfstdin,0,"rt") file list
    99-04-01 find: get -o -or and -a -and disambiguation order correct
    	 find: -*time -*min fix
    	 find: -exec {} malloc bug fix
    	 find: fix exit status
    	 xargs: long options, \r fix exit status
    	 tw: long options, fix exit status
    99-03-11 find: convert to optget()
    99-03-03 tw: CMD_INSERT instead of CMD_POST, fix `-' file list on stdin
    	 find: FTW_SEEDOTDIR, CMD_INSERT instead of CMD_POST
    99-02-14 cmdarg: use astconf("ARG_MAX")
    	 find: -fast to execute() just like tw
    	 find: -xargs command ';'
    99-01-23 locate,updatedb: add
    	 cmdarg: fix bug that did not 0 last terminator in file list
    98-11-11 find: -ls => ls -lis
    	 find,tw: add astconf("PATH_ATTRIBUTES") and strmatch(STR_ICASE)
    98-08-11 tw: add 32x4 file content checksum
    	 cmdarg: fix off-by-1 bug that lost 1 arg per cmdflush()
    98-07-01 tw: fix expr convert disc
    98-05-28 find: add -magic pattern and -mime pattern
    98-03-11 tw: fix p=pwd initialization bug
    	 tw: fix -m interaction bug with action
    98-02-14 find: add -icase for -fast ignorecase
    	 tw: add -I for -f ignorecase
    	 use FTW_MULTIPLE to get ordering on cmd arg dir list too
    	 pass dir list to findopen(read)
    	 tw: -G now takes format arg
    98-02-04 find: add -fast primary to handle std `find x' == `find x -print'
    97-05-09 tw: mime && magic now use PATH(ftw)
    96-11-28 find: add optget()
    96-10-11 find: fix multiple -exec bug
    	 tw: strdup() compile time strings!
    96-10-01 update for magic discipline
    96-05-09 add find and xargs
    	 tw,find,xargs now use cmdarg.[ch] for exec arg limits
    	 tw: add -F codes to read/write fast find codes
    96-02-29 use EXIT_STATUS() to properly report command exit status
    95-05-09 add string magic field
    	 add -X (don't cross device boundaries)
    95-03-11 create this file
    	 add -H for FTW_META|FTW_PHYSICAL

### tests changes

    05-04-30 sfio: tgetr: add sfmaxr() tests
    05-04-20 cdt: snarf cdt tests from kpv
    05-01-04 date.c: add ``FMT time format answer''
    04-10-31 date.dat: add { hours days weeks months } ago tests
    04-10-27 opt.tst: TESTs 9? for astsa (stanadalone ast)
    04-09-14 date.dat: add %| and %& tests
    04-09-08 opt.tst: add :!value: omitted optional arg value TEST 47
    04-04-15 date.dat: add specific and ordinal day tests
    04-04-01 vmalloc: snarf vmalloc tests from kpv
    04-02-29 sfio/tscanf.c: add %! test
    	 opt.tst: add html escape test
    04-02-04 sfio/texcept.c: add sfraise(0,a,b) test
    04-01-14 sfio/tmmap2read.c: fix mmap() override for linux/bsd
    03-10-12 strtoi.tst: add strton[ll] suffix multiplier tests
    03-09-23 opt.tst: more optstr() tests
    03-09-11 opt.tst: add n:=v tests
    03-09-05 opt.tst: [f:l*?] test 43 update
    03-08-11 date.dat: add arithmetic tests
    03-05-25 opt.tst: add optstr() ???* internal option tests
    03-05-11 strtoi.tst: add malformation tests
    03-05-06 opt.tst: add getopt_long() compatibility tests
    03-04-22 date.dat: add last, this, next tests
    03-03-21 date.dat,datey2k.dat: add %Q/recent/distant/
    	 opt.tst: add trailing '*' option and option args tests
    03-02-13 base64.c: add base64encode()/base64decode() tests
    02-10-04 strtof.tst: add simple cases
    02-09-15 sfio/tscanf.c: add NaNS test
    02-09-05 opt.tst: add .fp 5 CW for *roff tests
    02-08-21 strelapsed.tst,strelapsed.c: add
    02-07-27 sfio/tpoll.c: fix for rw pipes
    02-06-26 opt.tst: fix debug locale message numbers
    02-05-16 date.dat: add '60+n min/sec ago' tests for n min/sec after the hour
    	 data.dat,datey2k.dat: update for %u addition to tmfmt()
    02-03-14 opt.tst: update <.>..< >--keys tests
    02-02-02 sfio/(tclose|ttpopenrw|ttell).c: add alarm to handle hung coproc
    02-01-27 sfio/terror.h: handle non-idempotent <varargs.h>
    02-01-12 date.dat,date2k.dat: fix EST/EDT %z tests
    01-12-18 date.dat,datey2k.dat: update for %z change from SHH to SHHMM
    	 date.dat: add YYYY/MM/DD tests
    01-11-24 opt.tst: update --?+SECTION tests
    01-10-31 opt.tst: add --?+SECTION tests
    01-10-30 date*.dat: fix cron tests where both mday and wday are specified
    01-10-18 strtof.tst: adjust for sfprintf()/printf() rounding
    01-10-18 sfio/twchar.c: add wchar_t tests
    01-10-11 opt.tst: add example and literal tests, . nroff tests
    01-10-10 opt.tst: sync with optget() i18n fixes
    01-08-11 test.sf*: need $(LDFLAGS) for -L* library link paths!
    01-03-26 test.strtoi,test.strtof: add
    01-02-14 sfio: add tmpread
    01-01-31 sfio: uniform test exit codes
    01-01-01 opt.tst: add enumerated option argument values
    00-12-11 date.dat: add a few more crontab(1) forms
    00-10-31 date.dat: add date(1) and touch(1) forms
    	 sfio: kpv updates to handle mac os X
    00-10-17 sfio/thole.c: move large buffer from stack to global
    00-10-03 testy2k.dat: `Feb 29 01:02' => `Feb 29  2000'
    00-04-01 Makefile: add ../../lib/libast to .SOURCE for features/sfio
    00-03-07 opt.tst: add printf +1 bug fix test
    00-02-14 opt.tst: fix for "..." attribute quote
    	 datey2k.dat: oops: %l fails for old (2000-02-29) NOW
    00-01-10 opt.tst: fix USAGE_LICENSE
    99-10-22 date: test all % formats
    99-08-11 sfio: fix 3 tests for uwin
    	 sfio: tscanf for netbsd
    99-03-25 :TEST: don't forget about foo.c for foo.tst
    	 sfio/testsfio: fix option parse for `-x *,*' and cc.* and *.cc
    99-01-23 moved library tests from std to here
    	 added optget() tests

### 3d changes

    05-02-01 3d.sh: IFS may be unset and { ash bsh } don't on startup -- wow
    05-01-01 sys.tab,utimets3d.c: add utimets() intercept
    04-12-15 pathreal.c: "..." should fail if no lower view -- doh
    04-10-01 features/syslib: _exit test now uses SIGKILL (openbsd abort() hangs)
    04-07-26 3d.sh: update runtime docs
    	 3d.1: drop in deference to the 3d.sh runtime docs
    04-07-20 3d.h: undef _BLD_DEBUG to avoid raw libast symbols
    04-07-19 fs.c,lib.c,open3d.c,vcs_3d.h: { O_RDONLY O_WRONLY O_RDWR } are values
    04-07-19 dir3d.c: rewinddir643d() must call seekdir643d() (not seekdir64())
    04-07-01 3d.tst: TMP => TWD to match regress(1)
    04-06-16 3d.tst: coordinate $TMP with regress(1)
    04-06-14 lib.c: fix fs3d() 2d return value
    04-06-11 3d.tst: fix test and error counts
    04-05-04 open3d.c: create missing lower level dirs for O_CREAT ... file paths
    03-08-15 mount3d.c: change 3d intercept test to handle NiL || ""
    03-06-11 ast.c: add _map_malloc checks for _ast_malloc => malloc
    03-06-05 pathreal.c: fix ancient multiple relative|.. symlink bug
    03-06-04 3d.sh: change `shift $OPTIND-1' to `set x "@"; shift $OPTIND'
    03-03-28 dir3d.c,rmdir3d.c,syscall3d.c: add D_FILENO and D_TYPE ifdefs
    03-03-25 dup3d.c: fix bug that cleared Dir_t pointer just after allocation
    03-03-07 ftruncate3d.c,lseek3d.c,truncate3d.c: check _typ_off64_t
    02-10-18 features/syscall.sh: handle pseudo files in cc -E line syncs
    02-07-17 syscall3d.c: clean up user level intercept code
    02-06-25 open3d.c: fix bug that created 0 mode file with only O_RDWR
    02-06-14 ast_3d.h,cs.c: move fmttime() macro override to cs.c
    02-06-06 dir3d.c: fix rewinddir() bug that did not decrement intercepted count
    02-04-01 Makefile,cs.c,cs_3d.h,ast_3d.h: _WIN32 tweaks
    01-11-26 pathreal.c: empty path is an error
    01-11-16 ftruncate3d.c,truncate3d.c: use lseek3d indirection via sysfunc()
    01-10-31 fchdir3d: add along with state.file[].dir to cache open dir paths
    	 dir3d.c: add recursive call intercepts
    	 error.c: add recursive call intercepts
    	 pathreal.c: add buffer size check
    	 features/syscall.sh: add bsd syscall __RENAME() checks
    	 syscall3d.c: check _lib_syscall before using it!
    01-10-30 features/syscall.sh,syscall3d.c: handle -ldl calls back into 3d
    01-09-20 3d.sh: drop extra } in USAGE that emitted -} for --?
    01-07-17 Makefile: don't link 3d dll against ast dll
    01-02-19 close3d: dup reserved fd's higher
    01-02-14 add :VARIANT: to build dll's for CC.DLL.VARIANTS
    01-01-01 dir_3d.h: real readdir must be struct dirent, not dirent64
    00-12-14 3d.sh: fix -c
    00-10-31 ast.c add pathtemp.c
    00-10-19 init.c: initialize _3d_2d
    00-07-17 fix fchown to call MSG_fchown (not MSG_fchown); fixes vim dump!
    00-02-14 3d command long options (finally)
    99-01-01 --- release 4.0 ---
    99-04-01 dll: sfsprintf => _3d_sfsprintf
    	 check for __*_nc (osf.alpha)
    99-02-14 pathreal: copy to state.path.name if not already there
    	 rewinddir3d: just call seekdir(p,0); fixes `top' core dump
    99-01-11 lseek3d,syscall3d: add sysfunc() for off_t!=long
    99-01-01 --- release 3.0 ---
    98-02-14 3d.sh: fix _RLD32_LIST => _RLDN32_LIST typo
    	 pathreal: fix (P_LSTAT|P_READLINK) under pwd bug that did phys on .
    	 features/syscall.sh: tighten up version __call header grep
    	 unlink: trap remove() too
    	 features/syscall.sh: favor strong (_ prefix) name for some arch's
    98-02-06 syscall3d: handle longjmp with cp->active
    98-01-23 features/syscall.sh: check for _xstat vs __xstat
    98-01-01 add readdir64 rewinddir64 seekdir64 telldir64
    97-10-11 fix lefty's virtual dir touch bug -- recursive doubling on stbuf
    97-07-17 CS_INTERFACE=2
    97-04-01 features/syscall.sh: fix __exit() test for new sgi
    96-12-25 handle stat64() implementations on top of _xstat()
    	 3d.tst must be run under 3d!
    	 _SCO_STAT_VER tweaks
    	 sgi _RLD_NEXT_PATHNAME fix for -32 -n32 -64 differentiation
    	 _*xstat() hacks around proto in *stat3d.c
    	 add constant casts for long shift counts
    	 fix pathnext() to report version instance level in state.path.level
    96-11-28 fix rename() to do physical stat on subject path!
    96-02-29 handle syscall loops caused by botched libs like solaris libsocket.so
    	 generalize name service interface to handle ifs+vcs
    	 catch acl,facl even if not on local sys
    	 fix features/syscall.sh bug that set $stdc incorrectly
    	 use alloca() in execve() if possible
    	 add 3d.tst and test makefile action
    	 fix a few important virtual dir / create / append bugs
    	 fix null dereference in open3d() for state.in_2d
    96-02-14 add NFS acl,facl
    96-02-08 fix 2d bug in link,rename,symlink that generated empty arg 1
    96-01-30 fix features/syscall.sh for compilers that ignore prototypes
    96-01-22 P_TOP only takes effect for files in virtual dir!
    95-11-24 optimize exec $shell to eval in 3d.sh
    95-11-11 don't fs3d_copy opaqued files
    95-10-11 fs3d_mkdir virtual dir fix
    	 fix 2d virtual dir test in pathreal()
    	 solaris _rename() != weak rename()
    	 solaris exit() doesn't call _exit()
    	 all static data in state
    	 test state.in_2d in link3d()
    	 fix opaque.sh that was broken sometime after 91
    	 linux LD_BIND_NOW not needed with ld.so-1.7.9
    95-07-17 handle irix-5.3 struct stat64 and off64_t
    	 dlsym(__exit) before dlsym(_exit)
    95-05-09 fix pathcanon() bug that incremented state.path.level too far on ...
    	 percolate inode metadata changes to the top level too (no more EROFS)
    	 add P_TOP to truncate() too!
    	 feature/syscall.sh does not generate #include, up to *3d.c
    	 spawnveg.c must come after spawnve.c in ast.c
    	 cspoll.c must come after cs*.c in cs.c
    	 fix 3d to work like $SHELL if no shared 3d lib found
    	 fix chdir .. symlink bug that set state.pwd to physical path
    	 add %n.n.nd to bvprintf
    	 ignore a few more non-initialization setcwd() errors
    95-01-19 fix undefined var ref for _VER_ hack calls in features/syscall.sh
    95-01-11 access W_OK succeeds if on lower view
    94-12-01 add /#fs/NAME/load to load shared lib fs
    	 add user system call trap() stack
    	 VPATH=*::* or VPATH=*:-:* to separate disjoint views
    	 change trap() to intercept()
    94-07-17 add /#fs/safe
    94-06-01 fix symlink() and link() bug that didn't instantiate virtual dir
    	 fix [f]statvfs() infinite loop for att hybrids
    94-05-11 merge with the real vcs
    	 add char*_3d_2d: if _3d_2d!=0&&getenv(_3d_2d)==0 then 2d
    	 trailing slash in pathreal() interpreted as slash dot (off/w test=010)
    93-05-28 add /#option/limit=n to limit view depth
    93-04-01 --- release 2.0 ---
    93-03-11 change /dev/3d/* to /#*
    	 remove anno and rpl specific hooks
    	 add name,monitor,active fs mounts
    92-04-01 --- release 1.1 ---
    92-02-11 change retained mounts to /dev/3d/dev
    92-01-11 add $SHELL and /bin/sh exec() checks to force 3d sh
    	 fix checklink() to concatenate relative links with original prefix
    91-11-11 --- release 1.0 ---
    	 add feature/syscall.sh to handle att s5r4, hp snake, sun 4.1
    	 change umask() 3d state toggle to mount(-,/dev/3d/option/{2d,3d})
    	 fix creat() virtual dir bug for umteenth time
    	 link() and rename() now migrate to top instead of EROFS

### coshell changes

    03-03-04 add state.remote=CS_REMOTE_SHELL
    01-12-12 resolve SETSHELL local vs. global conflict -- its both
    	 ignore attr now really ignores host -- duh
    01-12-11 add global maxidle=0 to ignore idle
    	 split readonly and user settable values in `g' command output
    00-12-14 shell is per host attribute
    00-02-01 --- release 2.2 ---
    99-06-24 cosh: change exit to return
    99-06-24 --- release 2.1 ---
    97-12-07 update for CS_SVC_SUFFIX
    96-12-25 add constant casts for long shift counts
    96-05-09 coinit(CO_SERVER)
    96-02-29 use <hashkey.h>
    96-01-31 AT&T Research
    96-01-31 --- release 2.0 ---
    95-07-17 add perhost job limit
    	 all specific misc attr expr to override idle
    95-05-09 convert init script to hostinfo
    	 fix indirect bug that forgot to poll the command stream!
    95-04-01 change streval() to strexpr()
    95-01-01 don't bias out home host with cpu>1
    	 add shell=path to set remote shell path
    	 add debug=level to set debug level as an attribute
    	 add identify=1 to identify remote command output
    	 identify="format with %s"
    	 attributes may be set on the command line
    	 add COINIT to cosh so .coshrc can check for new coshell
    	 add state.grace to g output
    94-11-11 csstat() lazy evaluation in expressions
    94-07-17 --- release 1.1 ---
    94-06-11 add disable=secs to disable hosts of jobs killed by SIGKILL
    	 handle shell quoted space in -r strings
    94-04-01 add per host access=(expression) to control access
    	 add per host bypass=(expression) to bypass min idle
    	 add uid, gid, day (monday:1,sunday:7), hour, min to expressions
    	 add periodic check for share/lib/cs/access for access control
    	 add grace=n for busy job grace running time
    	 add scale=n (default == # cpu) load average scale
    	 add migrate="command" to override default SIGSTOP for hogs
    	 add profile="command" to override default ". .profile"
    94-03-11 fix pseudo-float and elapsed-time constant operand conversions
    	 add static minidle to disambiguate from dynamic idle
    	 fix remote shellopen to work for csh users (there's still some left?)
    94-03-01 fix maxload to be pseudo-float
    93-10-11 add CO_OPT_ACK coexec() ack
    	 add maxload,percpu,perserver,peruser job limits
    93-03-11 reschedule jobs queued on hung shells
    92-11-11 minor fixes to handle `coshell -' on pipeline
    92-09-26 /dev/tcp/* supported as alternative to /dev/fdp/*
    92-04-01 --- release 1.0 ---
    92-02-29 fix COATTRIBUTES quote bug, handle aaa==bbb@ccc in expressions
    92-02-11 add `noattr' to delete misc attributes
    91-10-11 add COTEMP temp file base to job environment
    91-08-11 jobs queued for shell open now in job table
    91-07-17 add heterogenous pool support
    	 add % weight for additional cpus
    	 fix (type@xxx) expression evaluation
    91-03-11 fix handling of down hosts
    91-02-11 add string comparisons to attribute evaluation
    	 update for new message interface
    91-01-31 add -?
    90-12-11 if . has idle=0 then local bias entry is ignored
    90-11-11 local host not reported down if status missing
    90-10-11 . $ENV after .profile in $COINIT
    	 add -l <expr> to list hosts matching <expr>
    	 change CO_{attr,close,open} msgs to CO_server
    	 add load and up readonly attributes
    90-10-01 libx/cs -> libcs
    90-08-11 check auto=0 file attribute
    	 fix bug that dropped multiple SHELL job status messages
    	 arbitrary attributes and C-style attribute expressions supported
    	 ks <job> and kc <job> added to stop and continue jobs
    	 signals sent to remote shells use signal name rather than number
    	 add shell/job label attribute
    90-07-17 add auto=[01] attribute for automatic scheduling pool
    	 tune scheduling
    	 add server protocol check (narrows unix-domain socket panic window)
    	 catch SIGHUP to reconnect connect stream path
    90-07-11 bad rank shells dropped from pool
    	 more rank tuning
    90-06-01 --- release 0.0 ---

### cpp changes

    06-01-11 cpp.tst: update pp:passthrough tests
    05-12-16 cpp.tst: add imake pp:passthrough comment splice test
    05-04-11 cpp.tst: add '"a" #s' catliteral + stringize
    04-10-01 cpp.tst: adjust for hidden line patch
    04-08-11 cpp.tst: adjust for ppproto.c patch
    03-12-12 cpp.tst: add empty macro actual tests
    03-11-25 cpp.tst: add -D-d test
    03-11-12 cpp.tst: add #if expression tests
    03-06-21 cpp.tst: add T_INVALID ? splice bug test
    03-05-19 cpp.tst: add stray SKIPMACRO test
    03-05-18 cpp.tst: add SYS_FUNCTION ungetchr() bug fix test
    03-04-30 cpp.tst: add pp:mapinclude tests
    02-11-07 cpp.c: exit() => return for lame linters
    02-10-10 cpp.tst: add does not end with `newline' tests
    02-05-24 cpp.tst: add TEST 15 pragma space canonicalization tests
    02-03-15 cpp.tst: add TEST 14 for libpp/ppproto.c memory fault fix
    01-10-20 cpp.tst: add pp:splicespace "..." tests
    01-06-01 cpp.tst: add -M* dependency generation tests
    01-02-14 cpp.tst: pp:pragmaexpand pp:catliteral # operator interactions
    01-02-05 cpp.tst: add (finally)
    96-01-31 --- release 2.0 ---
    92-04-01 update for new libpp
    92-04-01 --- release 1.1 ---
    90-10-11 update cpp.1
    88-06-08 update makefile to install Makeinstall.mk ALTPP.LINK links
    88-02-29 redo PP_INITDIR initialization
    87-10-11 update man page
    87-09-18 add ppop(PP_DONE) call
    87-04-24 recode for updated library interface
    87-04-03 add -D-Ttest to enable debugging test code
    87-04-02 add -I-Rfile for PP_READ
    	 move #include "ppdefault.h" to ppargs.c using PP_READ
    	 add -D-I[id] to name line sync directive ("line" if id omitted)
    87-03-31 change -Nfilename to -D-Ffilename
    87-03-30 add -D-Llanguage for PP_LANGUAGE,language
    	 add -D-H for PP_NOHOSTED
    	 add -I-H for PP_HOSTED
    87-03-24 --- release 1.0 ---

### cs changes

    02-10-02 tst.c: tmform() => fmttime()
    01-01-01 vcs_src/*: drop old notices, fix signal handler prototype
    00-05-09 mbb: add (message bulletin board service)
    99-09-22 cs: update for CS_MNT_TAIL
    99-05-18 cs,css: long options
    98-05-01 css: add
    97-05-09 imount: add
    96-12-25 cs: fix -i eof logic
    96-02-29 nam protocol change
    	 add vcs+ifs beta
    	 drop getdomainname() call
    	 vcs: use ast equivalents for strstr ftruncate realpath
    95-12-08 add -r raw interactive mode
    95-07-17 add /trust=user when server not in PATH
    95-04-01 start this file
    	 fix cat server read bug CS_LINE -> CS_EXACT

### mam changes

    04-02-29 self-document

### msgcc changes

    02-03-11 msgcc: fix merge replacement threshhold logic
    	 msggen: convert { \a \b < >\r \v } back to C escapes
    	 msgcpp: set pp:modern
    02-02-14 msggen: add -f to list printf format signatures
    01-10-10 msgcc: allow some email forms to pass
    01-06-10 msgcpp: add proper escapes to OMIT pattern
    01-05-29 msgcc: add similar unused message replacement, -M-similar
    01-04-22 msgcc,msggen,msgget: use mcindex()
    01-01-31 ignore ls generation errors
    00-04-20 first release

### nmake changes

    06-02-08 pkg-cobol-cobc.mk: drop -g from COBOLFLAGS
    06-01-31 Makerules.mk: fix :PACKAGE: P:static to honor .PACKAGE.P.library
    06-01-25 Makerules.mk: { -ldl -lm } dynamic unless explicitly overridden
    06-01-21 --- release 5.1 ---
    	 Makerules.mk: fix list.package.binary INSTALLROOT edit
    	 command.c: add gcc 4.*.* ppc code generation bug workaround
    	 read.c: handle /dev/* mtime==0
    	 version.c: fix { VROOT VOFFSET } initialization
    06-01-08 pkg-cobol-*.mk: handle --debug-symbols
    05-12-25 Makerules.mk: fix :LIBRARY: plugin bind for exe/dll
    05-11-22 variable.c: restore $(+...)==$(-...) until 2009
    05-11-07 Makerules.mk: fix :YYPREFIX: to handle YY in new prefix
    05-11-04 Makerules.mk: PACKAGE_p_LIB => PACKAGE_p_INCLUDE
    05-11-03 expand.c: add :H=P: directory prefix sort
    05-11-01 pkg-cobol-*.mk: add :VARARGS:
    05-10-14 pkg-cobol*.mk: add COBOL.PLUGIN.LIBRARIES for mfcobc plugins
    05-10-12 Makerules.mk: handle "foo :LIBRARY: -lfoo" to gen dll from lib
    	 tests/cc.def: add test version of pkg-cobol.mk
    05-10-11 Makerules.mk: :PACKAGE: foo:bar => .PACKAGE.foo.option.bar:=1
     	 pkg-cobol-mfcobc.mk: add special char extern demangle
     	 pkg-cobol-mfcobc.mk: :PACKAGE: cobol:always => .COBOL.INIT
    05-09-15 Makerules.mk: quote .PROBE.SPECIAL return to disable time arith
    05-08-11 rule.c,state.c,tests/attribute.tst: fix .RETAIN
    05-08-08 Makerules.mk: add :A!=.TERMINAL: to .BUILT. -- doh
    	 tests/recurse.tst: add test for .BUILT. vs .TERMINAL
    05-07-17 Makerules.mk: move cobol specifics to pkg-cobol.mk
    	 Makerules.mk: add CCSPECIALIZE $(CC.OPTIMIZE) override
    	 Makerules.mk: add include - + pkg-default.mk
    	 Makerules.mk: add $(-mam) test for .MAM.INIT in .mo
    	 Makerules.mk: --mam=static set noreadstate reread strictview
    	 Makerules.mk: handle package named by root dir: :PACKAGE: /a/b/name
    	 pkg-cobol.mk: generic cobol package setup
    	 pkg-cobol-cobc.mk: open source cobol package setup
    	 pkg-cobol-mfcobc.mk: microfocus cobol package setup
    	 options.h: OPT_reread is boolean, not numeric
    	 rule.c: add .FREEZE state.freeze
    	 tests/recurse.tst: add
    05-05-25 Makerules.mk: use $(CC.INCLUDE.LOCAL) instead of -I- CC.DIALECT
    05-05-18 Makerules.mk: fix --static-link typo
    	 Makerules.mk: disable .MAMACTION "setv FOO ${FOO}"
    	 Makerules.mk: add (CC.SHARED.LIBS.*) to capture -l* bind changes
    05-05-11 Makerules.mk: fix --nolib-type to work for referenced libs too
    05-05-05 Scanrules.mk: handle cobol COPY "book" optional quotes
    05-05-01 Makerules.mk: drop -D* from COBOLFLAGS
    	 Makerules.mk: :PACKAGE: :dynamic => :notype
    05-04-26 Makerules.mk: add COBOLDIALECT
    05-04-20 Makerules.mk: add :P=A: to .LIST.PACKAGE.BINARY VROOT logic
    	 Makerules.mk: fix PACKAGE_%_LIB logic to handle /usr/%/lib64 etc.
    	 version.c: fix OLDMAKE to search $(PATH) for { gmake make }
    05-04-15 option.c: fix regress state.start for hi res clock lo res filesystem
    	 state.c: failed statevar action must set statevar time to 0
    	 Makerules.mk: change manifest edit op :P=F: => :P=F:T=FR:
    05-04-14 Makerules.mk: drop /usr/common from LCLDIRS, /home from OPTDIRS
    05-04-11 command.c: set internal.openfd FD_CLOEX before coopen()
    05-04-08 parse.c: revisit space indentation [syntax:10]
             object.c: pre-2005-03-01 corruption repair drops 0 prereq list items
    05-04-03 variable.c: fix += vs space inconsistencies [assign:09]
    	 Makerules.mk: restore $(PACKAGE_LOCAL) -- used in user makefiles
    05-03-31 Makerules.mk: add --lib-type
    	 object.c: move bound object prereq name to COMP_NSEC
    	 parse.c: fix assertion/assignment intercept $(%) to be operator name
    05-03-19 Makerules.mk: %.sh chmod only if not already writeable&executable
    	 Makerules.mk: mam ${-debug-symbols...} defaults to ${CCFLAGS.FORCE}
    	 make.c: fix optional joint metarule prereq state check
    	 metarule.c: fix closure ordering bug (metarule:23)
    	 object.c: don't mark (P_joint|P_target) garbage
    	 object.c: fix makefile prereq subsecond truncation time check
    	 object.c: fix makefile .SOURCE.mk prereq change bug (diagnostics:14)
    	 parse.c: .SPECIAL not interpreted as metarule -- doh
    	 state.c: triggered state var time now synced after action completes
    05-03-17 state.c: fix statefile() to return non-null for --nowritestate
    	 state.c: demote "file timestamp subsecond truncation" to --warn
    	 Makerules.mk: fix .SHARED.LIST. to honor --all-static
    	 Makerules.mk: _PACKAGE_foo=0 => ignore :PACKAGE: foo
    05-03-11 state.c: handle linux subsecond truncation after state lock inode flush
    	 expand.c: handle */foo?* : lib/libfoo in :W=O:
    05-03-09 Scanrules.mk: cobol accepts "\T \D COPY ..." !
    	 rule.c: clarify prereq list change explanations
    05-03-08 Makefile: generate nmake.1 from --nroff + make.1.body + make.1.tail
    05-03-01 object.c: fix compcheck() bug that missed some prereq->complink
             object.c: repair pre-2005-03-01 compcheck() corruption in load()
    	 Makerules.mk: fix .LIST.PACKAGE.EDIT. , delimiter clash
    	 Makerules.mk: fix binary .LIST.PACKAGE.EDIT. to retain arch/HOSTTYPE
    	 Makerules.mk: fix plugin static :LIBRARY: dll install bug
    	 Makerules.mk: --static-link => _BLD_STATIC_LINK==1
    05-02-28 object.c: reset errno for "object file io" EOF messages
    05-02-22 make.c: fix joint metarule time comparison
    05-02-14 object.c: object option strings must be utf8
    05-02-11 Makerules.mk: check :MAKE: recursion on .
    05-02-08 Makerules.mk: shared lib link now uses ./*.req too
    05-02-06 Makerules.mk: .FIND. lib/package checks $(PACKAGEROOT) first
    05-02-04 Makerules.mk: drop .LIBRARY.CLEANUP. old plugin cleanup
    05-01-01 --- release 5.0 ---
    	 high resolution time stamps
    04-12-25 Makerules.mk: handle cc-,a=b
    	 Makerules.mk: check for -I. after -I-
    	 Makerules.mk: add MVFLAGS=-f for install actions
    	 Makerules.mk: relax .PACKAGE.INIT. PACKAGE_%_INCLUDE search
    	 Makerules.mk: fix list.manifest recursion
    	 Makerules.mk: add experimental --recurse=combine
    	 Scanrules.mk: assert .LCL.INCLUDE before .PREFIX.INCLUDE :T=G: bind
    	 msgcat.mk: fix _PACKAGE_ID
    	 bind.c: disable bindalias() for unbound files -- doh
    	 misc.c: fix { %C %S } core dump (after a warning!)
    	 parse.c: drop CON_scan for over all rules; $(...) does it
    	 parse.c: drop { .ASSERT .ASSIGN } lists, add { .ASSERT. .ASSIGN. }
    	 state.c: ignore file timestamp subsecond truncation -- willya fix ext3
    04-12-08 Scanrules.mk: add .SCAN.iffe for `include previous-iffe-output'
    	 Scanrules.mk: fix $(prefixinclude:?...) => $(-prefix-include:+...)
    	 Makerules.mk: no -g CC.LIB.TYPE (in ar name) if CC.OPTIMIZE also set
    	 rule.c: don't propagate .DONTCARE .IGNORE to bound rule
    	 parse.c: association pattern ending in % is appended
    	 expand.c: fix :P=A: 3d logic to retain pwd prefix -- doh
    	 expand.c: fix makefile scan to ignore lib*.[hH]
    	 bind.c: fix bug that missed bind dir for x given explicit d/x (edit#18)
    	 misc.c,option.c: *,*=* is a target/prereq, not a (scoped) var assignment
    04-12-01 object.c,state.c: tmsleep() on statefile time for 1 sec granularity
    04-11-25 expand.c: handle :T=<op>=<ops>: for all <op>
    	 command.c: maintain error state for cancelled actions
    	 command.c: add .AFTER .FAILURE to capture action errors
    	 Makerules.mk: LEX = $(FLEX) if flex exists
    	 Makerules.mk: add :YYPREFIX: fallback to previously generated
    04-10-22 Makerules.mk: check for package-pwd in LICENSEFILES
    	 Makerules.mk: mam ${(debug|strip)...} => ${-(debug|strip)-symbols...}
    	 Makerules.mk: add $(LICENSECLASS)
    	 Makerules.mk: add $(package.license.class) pattern for .LIST.PACKAGE.*
    	 Makerules.mk: add $(.SELECT.EDIT.) for omitting .RECURSE subdirs
    	 expand.c: fix recursive order logic
    04-10-01 metarule.c: metaget assumes % target for ... : % .NULL (-Q0x08000000)
    	 scan.c: add \T token match for (\D|\V)
    	 Makerules.mk: :PACKAGE: --option checked first, "set" by default
    	 Scanrules.mk: .SCAN.cob COPY has "\T" lead-in instead of " \D"
    04-09-28 expand.c: fix operator separator parse (edit#17)
    	 option.c: fix $(-c) option flag lookup (option#14)
    04-09-24 option.c: optcheck() after each option table change
    04-09-21 add --option prereq scope with getopt() style "--" terminator
    	 expand.c: :P=A: now acts like :P=L!:
    	 Makerules.mk: fix $(-static) => $(-static-link)
    	 Makerules.mk: /bin/cat.exe => "%.exe : % .NULL"
    04-09-09 expand.c: add :T=QO: (isoption()) and :T=QR: (!!getrule())
    	 object.c: finally stomp the complist() panic via compcheck()
    	 object.c: fix loadstring() to detect early EOF
    	 option.c: add isoption(), --name[[-+&|^]=value]
    	 option.c: fix set option table format to handle future extensions
    	 Makerules.mk: drop PACKAGE_LOCAL definition -- not used anywhere
    	 Makerules.mk: add rules options, syn with options.c
    	 Makerules.mk: this version incompatible with make < 2004-09-09
    04-09-01 Makerules.mk: add .LIST.PACKAGE.RUNTIME
    	 Makerules.mk: fix recursive .LIST.PACKAGE.EDIT.
    	 make.h,options.h,option.c,command.c: add --serialize, state.serialize
    	 expand.c: sync :W: 2d and 3d logic
    	 option.c: add --option values subarg for optget(3) value list
    	 read.c: fix MAKERULES vs. explicit rules statement logic
    	 variable.c: change $(+) to $(--[name]), add $(-?[name])
    04-08-31 debug.mk: fix -D-d vs -dD logic
    04-08-11 expand.c: :W=O: scans INIT files too -- duh
    	 expand.c: fix :P=H: sufix checks
    	 expand.c: handle :P!=S:
    	 command.c: fix .JOBDONE rule arg (internal#05)
    	 command.c: fix --targetcontext directory commit logic
    	 metarule.c: add --targetprefix=prefix to handle source base clashes
    	 parse.c: fix local ( a ... ) $(%) (statement#10)
    	 Makerules.mk: fix :PACKAGE_INSTALL: to use .ACCEPT (e.g. for proto)
    	 Makerules.mk: fix .MAMEDIT. initialization for 2d vs. 3d
    	 Makerules.mk: YACCFIX now applies proto to y.tab.h
    	 Makerules.mk: ignore VERSION==- for default output file names
    	 Makerules.mk: fix :DLL: to work -- wow
    	 Makerules.mk: fix synthesized rule names to avoid .. canonicalization
    	 Makerules.mk: fix :PACKAGE: to handle `foo=bar' rhs
    	 Makerules.mk: add .LIST.PACKAGE.LICENSE
    	 Makerules.mk: add separateinclude=1 to override CC.DIALECT=-I-
    	 Makerules.mk: handle --targetprefix
    04-08-10 rules-win32.mk: add :PACKAGE: { atl crt mfc } support -- puke
    04-07-27 msgcat.mk: move :: related files to msg specific action
    04-07-22 tests/*.tst: more test additions
    04-07-17 archive.c: --regress enables ranlib for all archive types
    	 bind.c: fix binding guess for unbuilt targets
    	 bind.c: fix overzealous dir HASH prune for 2d views
    	 bind.c: allow D_source&P_target to inherit lower view (assert#29)
    	 expand.c: add :T=B..: unbind pre-op
    	 main.c: move the .INIT trap after candidate state variable freeze
    	 main.c,read.c: update MAKECONVERT to handle 'file1:file2 action ...'
    	 make.c: let joint prereq share sibling frame for binding (assert#34)
    	 make.c: fix require_p loop detection
    	 object.c: add objectfile() to unify with statefile()
    	 object.c: fix lower view state var time propagation
    	 object.c: -nbf file inhibits frozen var check
    	 object.c: use complink() skip logic in comprule() -- wow
    	 option.c: --writestate and --writestate can specifiy dir only
    	 rule.c: add .GLOBAL and internal.global
    	 state.c: drop leads/lags warning for --regress
    	 Makerules.mk: handle multiple :LINK: lhs
    	 Makerules.mk: fix .DO.INSTALL.DIR view logic with .DO.TOP.LEVEL
    	 Scanrules.mk: add ".ATTRIBUTE.%.h : .SCAN.c" for .PARAMETER files
    	 Scanrules.mk: .SCAN.sh: add $'...' quotes
    04-06-30 parse.c: pass blank lines at all input levels to preserve numbering
    	 parse.c: no space indent warning for blank lines
    	 parse.c,syntax-08: handle quote after expansion in expression
    04-06-28 make.c: preserve joint metarule prereq list order
    	 diagnostics.tst: add
    04-06-21 Makerules.mk: make options env ignored if MAKE_OPTIONS set
    	 make.h: add state.import with increment/decrement semantics
    	 options.h,options.c,variable.c,object.c: add import state option
    	 parse.c: fix here action parse to honor quotes and nesting
    	 parse.c: retain blank/hidden action lines for line number consistency
    	 trap.c: fix functional vs. obsolete virtual interrupt logic
    	 assert.tst,automatics.tst,interrupts.tst,syntax.tst: add
    04-06-20 dump.c: drop dumprule() trailing ' ' by adding "state" status
    	 expand.c: skip tst=='F' for :T=XG:
    	 make.c: maketop() rule rename disabled (what did that do?)
    	 misc.c: handle %o in printext() -- oops
    	 misc.c: %t %T calls tmdate() if not a number
    	 parse.c: D_scope prereqs do not set P_target
    	 Makerules.mk: if ! "$(CC.DIALECT:N=-I-)" then no -I- -- duh
    04-06-19 implicit.tst: add
    04-06-18 rule.c: add nametype() to unify is*() name type macros
    04-06-17 options.h: add -q, --regress to massage output for testing
    	 misc.c: add numtime() for mam/regress/trace numeric times
    	 prereqs.tst: add
    04-06-12 assignment.tst: add
    04-06-11 Makerules.mk: fix per-target +l vs. -l
    	 nmake.tst: split into attributes.tst edit.tst options.tst
    	 options.c: recode to pass options.tst
    04-06-10 nmake.tst: initialize in 2d with no VPATH
    04-06-08 Makerules.mk: drop :PACKAGE: nolibrary => -l%:.VIRTUAL
    04-06-06 rule.c: fix associate() .SCAN match
    04-06-04 Makerules.mk: add :PACKAGE: foo:notype bar:type=-p --type=-g
    	 Makerules.mk: fix .REQUIRE.* to handle libfoo.a etc.
    	 scan.c: add 'O' option to inhibit scan override warning
    	 parse.c: debug=7 for active statements, debug=8 for skipped
    04-05-31 Makerules.mk: fix :PACKAGE: version logic
    	 Makerules.mk: add .FLAGSINIT, called in .MAKEINIT
    	 Makerules.mk,Scanrules.mk: strip to generic cobol
    	 expand.h,expand.c: add ^ edit op sep
    04-05-20 Makerules.mk: fix .OFFICIAL to not diff dirs
    04-05-19 parse.c: make the read builtin interruptable
    04-05-18 rule.c: move b_*() builtins here, add b_syscall()
    04-05-11 mam.c: add "bind ..." to match the mam doc
    	 make.c: add "meta ..." to match the mam doc
    	 Scanrules.mk: tweak cobol sql scan
    	 scan.c: fix ancient dup pattern prefix bug
    04-05-06 Makerules.mk: fix CCLD CCLDFLAGS semantics
    04-04-15 expand.c: fix :V: operand check
    	 expand.c: check var alternation only before first delimiter
    	 expand.c: add :P=F: to recursively expand dir hierarchies
    	 expand.c: fix ancient $(...) non-tokenizing edit op bug
    	 parse.c: fix dup scope prereq value append
    	 bind.c: check for consistent ../* bound directory rebind
    	 Makerules.mk: fix :PACKAGE: :noinclude:nolib:noroot
    	 Makerules.mk: add :P=F: to .MANIFEST.
    	 Makerules.mk: add :INIT:
    	 Makerules.mk: drop obsolete MAKESKIP var definition
    	 Makerules.mk: proto notice generation disabled unless LICENSE=="*=*"
    	 Makerules.mk: package/PACKAGE.(lic|pkg) on PKGDIRS inhibits "not found"
    	 Makerules.mk: "test" action checks for gnu "check"
    	 Makerules.mk: fix recurse action target selection
    	 Scanrules.mk: fix .INCLUDE.cob to search lower and upper case suffixes
    	 rules-win32.mk: add SYSDIR
    04-04-14 Makerules.mk,Scanrules.mk: add COBOLIPF,COBOLSQL
    04-04-12 Makefile: add STDCHMOD (for osf.alpha cmd :LIBRARY:)
    04-04-04 bind.c: don't alias 2d directories -- duh
    04-04-01 Makerules.mk: .BIND.+l% checks .REQUIRE.-l% for disable
    04-03-31 expand.c: add :VB: for VAL_BRACE { ... }
    	 Makerules.mk: fix .SHARED.LIST. again
    	 Makerules.mk: add :PACKAGE: noCC.* CC.*=value probe overrides
    04-03-30 Makerules.mk: omit -L*/local/* if in CC.STDLIB (00-03-17 repeal)
    04-03-25 pkg-X11.mk: drop openbsd.i386 -lc_r workaround
    	 Makerules.mk: fix .SHARED.BIND. CC.SUFFIX.STATIC -l* expansion bug
    04-03-17 expand.c: check { :: :LIBRARY: } lhs
    	 option.c: fixed bug that looped on `-' or `+' arg -- wow
    	 Makerules.mk: atom arg disables foo => .FOO checks for subsequent args
    	 Makerules.mk: fix .LIST.PACKAGE.BINARY :P=A: misplacement
    	 Makerules.mk: fix inappropriate .BIND.-l% CC.SUFFIX.ARCHIVE .IGNORE
    	 Makerules.mk: fix .SHARED.REF.* to bind before return
    	 Makerules.mk: :NOTHING: now does `exit 0' -- almost nothing
    	 Makerules.mk: I not appended to ARFLAGS if .def :LIBRARY: rhs
    	 pkg-X11.mk: handle /usr/include/X11R* /usr/lib/X11R*, deprecate contrib
    04-02-29 state.c: fix `another make running' message to handle <=0 elapsed time
    	 Makerules.mk: CC.LD.RUNPATH used only if LDRUNPATH set (. to kick in)
    	 Makerules.mk: mam ${MAKE} => ${NMAKE}, ${MAKEFLAGS} => ${NMAKEFLAGS}
    	 Makerules.mk: localize plugin DLLDIR and CC.SHARED.REGISTRY
    	 Makerules.mk: do not install plugin CC.SUFFIX.SHARED libs
    	 Makerules.mk: fix CC.SUFFIX.SHARED CC.SUFFIX.ARCHIVE clash
    	 variable.c: mam $(-): $MAKEFLAGS => ${NMAKEFLAGS}
    	 nmake.tst: 001 now ebcdic immune
    04-02-14 scan.c: add class identifier match action 'C'
    	 expand.c: add :P=E: for PATH independent executable name
    	 expand.c: static mam :P=A: expands ``.'' for pwd
    	 expand.c: :N=pat: now uses regcomp() instead of strmatch()
    	 expand.c: :T=F: lstat() (as always) :T>F: pathstat()
    	 read.c: extend new vs. old makefile type check
    	 parse.c: add <<'end' ... end for literal actions
    	 Makerules.mk: let proto -c '' determine .LIST.PACKAGE.* comment style
    	 Makerules.mk: add $(CC.EXPORT.DYNAMIC) to default cobol LDFLAGS
    	 Makerules.mk: add $(CC.SHARED.LD) to differentiate -r and $(CC.SHARED)
             option.c: add --writeobject[=file] --writestate[=file]
    04-02-11 Makerules.mk: .LIST.PACKAGE.* generates top view relative paths
    	 Makerules.mk: add $(CC.AR) for ar
    	 option.c: fix optget() usage bug that treated --nofoo as --foo
    04-02-02 Makerules.mk: :LIBRARY: plugin static still installs req
    	 Makerules.mk: fix :PACKAGE: foo:nolibrary
    	 Scanrules.mk: ignore C++ include <foo> (no suffix)
    	 object.c: retain reference .IGNORE in state
    	 option.c: non-0 exit for invalid command line options
    	 parse.c: don't check D_scope for D_dynamic
    	 rule.c: add external.order for .ORDER, :W=[OPR]:, :PACKAGE: X:order
    	 scan.c: null map means ignore; handle |A.IGNORE|
    04-01-30 Makerules.mk: add .LIBRARY.CLEANUP.* to clean up after plugin renam
    	 Makerules.mk: :PACKAGE_INIT: lhs for pre-installed $(BINDIR) files
    04-01-28 Makerules.mk: add ``lib version plugin=id :LIBRARY: ...''
    	 expand.c: :W=[OPR]: now favors make if its in the mix
    04-01-22 Makerules.mk: add .PREQUIRE check to ensure up to date *.req
    04-01-20 expand.c: :T=F: includes triggered time==0 targets
    04-01-01 --- release 4.4 ---
    03-12-31 Makerules.mk: $(LDRUNPATH) overrides defaults for CC.LD.RUNPATH
    03-12-19 expand.c: add `foolib:foo:libfoo' to :W=[OPR]:
    03-11-25 Makerules.mk: CC=c++ not found => search for any existing c++ compiler
    03-11-19 Scanrules.mk: default cobol include suffix is .CPY (or .cpy)
    03-09-29 Makerules.mk: fix $(PACKAGES) logic inversion typo (:VARIANT: bug)
    03-09-22 Makerules.mk: don;t clobber $(CATALOG).msg
    03-09-19 Makerules.mk: fix %.sh USAGE_LICENSE quoting
    	 expand.c: fix :T=E: quoting
    03-09-16 archive.c: inhibit `member newer than archive' for ranlib time skew
    03-08-27 Makerules.mk: honor explicit :MAKE: rhs order
    03-08-11 make.c: change -T0x00300000 to -Q0x00300000 as documented
    03-07-17 archive.c: add arupdate()
    	 state.c: don't skew sync archives (avoids possible ranlib interference)
    03-06-21 parse.c: fix expr() quote recursion bug
    	 Makerules.mk: fix .DLL.INSTALL logic
    	 object.c: add initcode() to initialize the ccode maps early enough
    	 main.c: add initcode() startup call
    03-06-11 Makerules.mk: reinstate install .a on .dll+.lib systems
    	 rules-win32.mk: inhibit libast.a install since cc does implicit ast.lib
    	 Makerules.mk: drop DIALECT==CLOSURE check for new -l* binding
    	 Makerules.mk: add --mam ${mam_cc_FLAGS} to handle user CCFLAGS override
    	 Makerules.mk: fix :DLL: to honor CCFLAGS
    	 Makerules.mk: add -D_BLD_DEBUG to mam CCFLAGS
    03-06-10 debug.mk: add libpp(3) -D-d to %.i rules
    03-06-09 main.c: wait for jobs to finish before making .DONE
    	 expand.c: change `V edit op value' error to be a warning
    	 Makerules.mk: fall back to flex if lex not found
    03-06-06 expand.c: add :VFU: to expand unbound internal var names
    	 Makerules.mk: use .SHARED.LIST. to generate -l* +l* list
    03-06-02 ppcc.sh: -o C++ implies -o PPLD for link time instantiation
    03-05-21 Makerules.mk: fix %.sh=>% :T=E: echo quote bug
    03-05-19 Makerules.mk: runtime check for flex -[oP] and bison -[op]
    	 Makerules.mk: add strip=1 ala debug=1
    03-05-11 rule.c: fix MAKEPATH=$PWD:$PWD loop
    03-05-09 command.c: add "init TARGET CURTIME" dynamic mam
    	 command.c: add CURTIME to mam "code TARGET STATETIME CURTIME ..."
    03-05-07 Makerules.mk: add COBOL COBOLFLAGS COBOLMAIN COBOLLIBRARIES .SUFFIX.cob
    	 Scanrules.mk: add .SCAN.cob, `*( MAIN )*' for main source
    	 scan.c: add \D (0 or more digits), \V (0 or more variable chars)
    03-04-27 Makerules.mk: don't build dlls in subdir for CC.SUFFIX.SHARED==".x"
    03-04-22 rules-win32.mk: drop :PACKAGE: Xm override -- handled by uwin
    03-04-15 mam.c: output P_ignore attribute
    	 Makerules.mk: fix the mam .DO.INSTALL to compare before mv to .old!!
    03-04-05 expand.c: add :W=P: for ordered recursive prereqs
    	 Makerules.mk: add recurse=prereqs
    	 pkg-X11.mk: add openbsd.* -lc_r pthread workaround
    	 Makerules.mk: add .PACKAGE.$(P).found:=1 if package lib or header found
    	 Makerules.mk: optional :PACKAGE: rhs must now be marked :dontcare
    	 Makerules.mk: pure recursion makefiles make .RECURSE first by default
    	 Makerules.mk: .NORECURSE inhibits default .RECURSE first
    	 Makerules.mk: fix .DO.INSTALL directory prereq omission
    	 Makerules.mk: add .BELIEVE for initialization, e.g., after mamake
    	 bind.c: fix rebind alias bug
    	 misc.c: limit `mtime after the epoch' warnings to { S_ISREG S_ISDIR }
    03-03-28 Makerules.mk: eliminate CC.STDINCLUDE before -I- too
    03-03-27 Makerules.mk: add :PACKAGE: *:attributes:*
    	 pkg-X11.mk: fix CC.REQUIRE.Xm
    	 rules-win32.mk: add :PACKAGE: Xm:attributes:static
    03-03-21 command.c,object.c: always emit target name for --mam=dynamic
    03-03-19 expand.c: add :W=R: for true :MAKE: recursion order
    	 state.c: add test 0x00040000 to set failed event to staterule event
    	 nmake.tst: add first regression tests since 1984 -- yes, I'm ashamed
    	 Makerules.mk: change :W=O: to :W=R:
    	 Makerules.mk: use CC.LD.RUNPATH for LDRUNPATH and non-std dirs
    	 Makerules.mk: drop MAKEDIRS .RECURSE.OFFSET. -- not needed with :W=R:
    03-03-15 Makerules.mk: fix debug=1 to delete $(CC.OPTIMIZE) from CCFLAGS
    	 expand.c: fix SORT_* comparison function selection
    03-03-11 expand.c: add ~ edit op sep
    	 expand.c: limit edit op [~!<>=] sep to one occurrence
    	 expand.c: add :H=[FINUV]: alternative to edit sep overload
    	 expand.c: add :L~: to use version comparison
    	 Makerules.mk: use :H=[FINUV]: and :L~:
    	 Makerules.mk: add pkgconfig(1) .pc file support in :PACKAGE:
    	 Makerules.mk: fix %.sh=>% :T=E: misquote (ancient!)
    03-03-03 Makerules.mk: .MAM.INIT handles debug=1 for CC.DEBUG vs. CC.OPTIMIZE
    	 Makerules.mk: add 'test : .DONTCARE .ONOBJECT'
    	 Makerules.mk: another prefixinclude fix -- my head hurts
    	 Makerules.mk: pass recursive $(=) by value ( $(=:V) )
    	 misc.c: fix :F=[LUV]: translation
    03-02-28 Makerules.mk: YACCFIX workaround for bison yytoken addition
    	 Makerules.mk: include $(LDLIBRARIES) in %.req
    	 Makerules.mk: fix .BIND.-l% comparison on CC.PREFIX.SHARED
    	 debug.mk: handle .o scope prereqs
    	 variable.c: fix $(!) internal.val conflict
    03-02-24 option.c: drop --mismatch alias for --corrupt
    03-02-12 Makerules.mk: handle multiple lhs for :INSTALLDIR:
    03-02-06 pkg-freetype.mk: add
    03-01-31 Makerules.mk: mark .PACKAGE.LIBRARIES. hints .DONTCARE
    	 Makerules.mk: :PACKAGE: add to .PACKAGE. first, then include pkg-*.mk
    03-01-23 Makerules.mk: more prefixinclude tweaks
    03-01-11 Makerules.mk: CATALOG default is $(.CATALOG.NAME.)
    03-01-10 Makerules.mk: parameterize all silent => $(SILENT)
    02-12-21 --- release 4.3 ---
    02-12-18 Makerules.mk: :NOOPTIMIZE: "..."'d operator arg shenanigans
    02-12-16 Makerules.mk: disable .ARCOPY for linked targets
    02-12-06 Makerules.mk: sync CC.MAKE.OPTIONS,nativepp,prefixinclude logic
    02-12-04 Makerules.mk: fix contorted .so editing for - and  n.n.n versions
    	 Makerules.mk: parameterize CC/cc suffixes in { .SUFFIX.c .SUFFIX.C }
    	 Makerules.mk: use { .SUFFIX.c .SUFFIX.C } in :cc: list generation
    	 Makerules.mk: parameterize fortran suffixes in { .SUFFIX.f .SUFFIX.r }
    	 Makerules.mk: %.f is now equivalent to %.F
    	 Scanrules.mk: use { .SUFFIX.c .SUFFIX.C .SUFFIX.f .SUFFIX.r }
    	 Scanrules.mk: change .SCAN.F to .SCAN.fql -- who cares?
    02-12-03 rule.c: don't .UNBIND M_bind rules (questionable=0x02000000)
    02-12-02 Makerules.mk: prefixinclude=0 if CC.DIALECT has -I-
    	 make.c: add mutually dependent requirement loop check (for -l loops)
    02-11-28 main.c: don't close error_info.fd in startup
    02-11-21 Makerules.mk: dll version "-" bug that removed the installed dll!
    02-11-20 Makerules.mk: fix :cc: to handle all C source suffixes
    02-11-12 Makerules.mk: handle CC.LD.ORIGIN and CC.LD.STRIP
    02-10-31 main.c: change exit()=>return for pedantic lint
    02-10-28 bind.c: add GLOB_NOTDIR optimization to gl_dirnext
    02-10-25 eliminate a few uninitialized variable references
    02-10-20 Makerules.mk: add :NOTHING: (:ALL: or ...)
    02-10-16 Makerules.mk: fix :MAKE: for rhs files
    02-10-02 state.c: (-Q0x01000000) $(>) use min(r->time,state(r)->time)
    	 misc.c: tmform() => fmttime(); %K default time format
    02-09-22 Makerules.mk: drop ${mam_cc_STATIC} for +l binding
    	 expand.c: fix mam $(FOO|BAR) => ${mam_cc_FOO-${mam_cc_BAR}} conversion
    02-09-11 make.probe,probe.win32: move to INIT src to share with mamprobe
    	 Makerules.mk: add a few more mam_cc_* refs (mamprobe mostly complete)
    	 Makerules.mk: don't install .a only on .dll+.lib systems
    	 Makerules.mk: add :PACKAGE: :ignore=dir:, PACKAGE_IGNORE
    	 Makerules.mk: .PACKAGE.INIT. always initializes .PACKAGE.GLOBAL.
    	 Makerules.mk: add STDCMP to MAM install action
    02-09-07 Makerules.mk: disable lib REQUIRE closure if from CC.REQUIRE.*
    02-09-05 Makerules.mk: drop .NO.STATIC foo.a => foo-static.a rename
    02-09-01 Makerules.mk: add RMRECURSEFLAGS=-r
    	 Makerules.mk: assume mkdir -p (handled by INIT install)
    02-08-30 make.c: modified .JOINT siblings now trigger action
    02-08-06 make.h: { setbit shquote } macro rename to appease netbsd -- barf
    02-07-17 make.c,parse.c: allow keepgoing to be set by .QUERY
    02-06-11 Makerules.mk: :F=%(...)S: => :F=%(...)s:
    	 misc.c: %S %C obsolete warning
    	 variable.c: fix $(!) that improperly skipped !rule.scan && PREREQS.scan
    02-06-07 state.c: stat() after close() instead of fstat() before for cygwin
    02-06-06 Makerules.mk: fix $(output) to handle -$(VERSION) already in $(PWD)
    02-05-28 probe.win32: updates for { mingw }
    02-05-24 probe.win32: updates for { digital-mars borland lcc }
    02-05-20 expand.c: update to use regsubcomp(),regsubexec()
    02-05-09 expand.c: fix cross() so / X foo generates /foo, not //foo
    02-05-07 archive.c: use <ardir.h>,-lardir for library archives
    02-05-06 probe.win32: add more win32 compilers
    02-04-15 Makerules.mk: fix .DO.INSTALL ln-s to use proper source path
    02-03-29 Makerules.mk: CC.SUFFIX.SHARED==".lib" => CC.SUFFIX.DYNAMIC==".dll"
    	 make.probe: cygwin CC.PREFIX.SHARED=lib CC.SUFFIX.SHARED=.dll.a
    02-03-27 Makerules.mk: fix .BIND.-l% and .REQUIRE.-l% recursion checks
    02-03-23 Makerules.mk: ensure that _BLD_<variant> is valid identifier
    	 Makerules.mk: add .LIST.INSTALLED for existing files only
    	 Makerules.mk: add $(LICENSEFILE) to .FILES.
    02-03-14 variable.c: add label to --mam "setv"
    02-02-14 makerules: add and use CMPFLAGS
    	 makerules: add win32 ar I flag only when installing .a
    	 makerules: iffe { CC CCFLAGS LDFLAGS } => { IFFECC ... }
    	 scan.c,variable.c: .SCAN.IGNORE must ignore state prereqs too
    	 main.c: fix final message sequence for .ERROR intercept
    	 state.c,variable.c: fix $(?x) when state(x) exists but rule(x) doesn't
    	 makerules: add .SHARED.UNIQ. to .COMMAND.o (required by sgi.mips3)
    02-02-02 makerules: mark :VARIANT: target .SPECIAL
    	 makerules: use STDED & STDEDFLAGS to differentiate from ED=vi
    	 makerules: drop ED & EDFLAGS
    	 Makeinstall.mk: add STD* probe with possible execrate(1)
    	 makerules: inhibit lib/lib closure for CC.DIALECT==CLOSURE
    	 probe.win32: add CC.DIALECT CLOSURE to inhibit .lib closure
    	 option.c: -S => -S0
    	 makerules: fixed .SHARED.UNIQ. to ignore .MULTIPLE -- duh
    02-02-01 makerules: fix .IFFE.REF. for \rsystems -- barf
    02-01-22 makerules: ARFLAGS += I for CC.DLL on win32.*
    02-01-15 makerules: fix $(CC.PREFIX.DYNAMIC) logic in .BIND.-l%
    	 makerules: mark $(CC.SUFFIX.DYNAMIC) .SCAN.IGNORE
    02-01-11 makerules: fix $(CC.SUFFIX.LD) prereqs for :LIBRARY: dlls
    	 make.probe: add .ign to cygwin CC.SUFFIX.LD
    02-01-10 makerules: add proto -e arg to lhs of :INSTALLPROTO:
    	 probe.win32: add .ign to CC.SUFFIX.LD
    02-01-08 makerules: initialize HOSTCC to $(CC)
    02-01-07 makerules: fix .LIBRARY.STATIC.* binding
    02-01-04 makerules: .REQUIRE.-l% includes pkg-%.mk of lib+prereqs before bind
    01-12-26 makerules: .REQUIRE.-l% includes pkg-%.mk if it exists
    01-12-24 pkg-X11.mk: add CC.REQUIRE.Xaw3d
    01-12-20 makerules: fix .RECURSE.INIT to use only first match of $(MAKEFILES)
    01-12-19 makerules: foo :VARIANT: ... implies _BLD_foo==implies _BLD_foo==1
    01-12-18 makerules: sync .SOURCE.a between .BIND* and .PACKAGE* (again!)
    01-12-15 command.c: fix bug that discarded a running job twice
    01-11-30 command.c: exit 128 silently marks job error but continues
    01-11-25 command.c: add .JOBDONE(target status user sys) .FUNCTION
    01-10-31 makerules: adjust .SOURCE.mk to ensure user specified dir order
    	 makerules: search MAKERULESPATH for ppcc rather than just MAKELIB
    	 makerules: delay CC.SHARED.REGISTRY expansion
    	 bind.c: add debug=14 directory search order trace
    	 make.probe: fix CC.SHARED.REGISTRY probe typo
    01-10-30 makerules: _BLD_foo==1 only for foo :LIBRARY: source
    01-10-20 makerules: fix --mam bug that didn't parameterize HOSTCC
    	 makerules: fix .PACKAGE.INIT. and .BIND.-l% to use the same search!
    	 bind.c: foiled alias still allows bind questionable=0x40
    	 expand.c: allow all edit op delimiter combinations (e.g., !>, <>)
    	 make.probe: fix CC.DLL probe for gcc __ia64
    01-10-18 misc.c: clear SFFMT_LONG for %[cCsS] to avoid wide char conversions
    01-10-17 misc.c: add %a %A format, fix unknown format core dump
    01-10-15 makerules: fix .SELECT. bug that improperly dropped .ARCHIVE
    01-10-11 make.probe: fix CC.WARN probe for C++
    01-10-10 Makerules.mk,make.probe: add { SHELLMAGIC CC.SHELLMAGIC }
    01-10-05 make.c: add -Q0x00800000 to disable r->status=FAILED when errors!=0 !!
    01-10-02 makerules: :YYPREFIX: invert case for macro prefix
    01-09-28 makerules: fix .RWD. and .OWD. usage
    01-09-24 fix $(.GETCONF x) builtin
    01-09-19 make.probe: add cygwin dll build probes
    	 probe.win32: sync with make.probe
    	 makerules: include debug.mk by default
    	 makerules: .dll+.lib rule now passes .dll suffix to $(CC.LD)
    	 make.probe,makerules: add CC.PREFIX.(ARCHIVE|DYNAMIC|SHARED)
    	 make.probe,makerules: change CC.SYMPREFIX to CC.PREFIX.SYMBOL
    	 makerules: fix .RECURSE and .ONOBJECT to hit sub :MAKE: levels
    01-09-17 makerules: fix PACKAGE_OPTIMIZE logic
    01-09-11 expand.c: use pathnative() for native fs representation
    	 openar(): must open with "b" mode
    	 state.c: open state with "b" mode
    01-09-08 makerules: add *.a prereqs to dll link
    01-09-04 makerules: +l* bind conditioned on .LIBRARY.LIST. for dll builds
    01-08-11 makerules: reference $(CC.DLL.LIBRARIES) last and in link args only
    	 makerules: +l* in req list now checks .PACKAGE.*.library for -l*
    	 parse.c: fix `r to act like `n'
    	 make.h: add FSWINDOWS to include { _WIN32 _UWIN __CYGWIN__ }
    01-07-17 makerules: fix :LIBRARY: to honor LDLIBRARIES
    01-06-21 misc.c: fix strtoll and strtoull macro rename
    01-06-10 makerules: add CC.NATIVE for native objects
    01-06-07 command.c: fix job deadlock bug that improperly broke the loop
    01-05-31 makerules: add option rhs to :DLL:
    	 makerules: :PACKAGE: add :(optimize|space|time) for PACKAGE_OPTIMIZE
    	 makerules: add CC.HOSTTYPE != CC.EXECTYPE for IFFEFLAGS
    	 make.probe: add CC.EXECTYPE
    	 make.probe: fix { ld nm size strip } search
    	 make.probe: adjust probe_shared order for linux.arm gcc
    	 option.c: add --cross to not run generated executables
    01-05-30 make.probe: add CC.NATIVE
    01-05-28 make.probe: add CC.STRIP and CC.STRIP.FLAGS
    	 makerules: add PACKAGESTRIP check for .LIST.PACKAGE.BINARY
    01-05-26 expand.c: add :T=Y: for mime type
    01-05-09 --- release 4.2 ---
    	 make.h: isdynamic,isglob,isstatevar: functions to factor out strmatch()
    	 expand.c: add T=XQ[S[AV]|V[I]] to factor out strmatch() in base rules
    	 rule.c: speed up associate() by factoring out attributes
    01-05-01 expand.c: order() now handles :PACKAGE: foo:command
    01-04-26 makerules: null out cctype and .CC.PROBE. for --base
    	 makerules: fix .REQ. bug that missed :LIBRARY: targets
    01-04-25 makerules: add variants=pattern to select cc- variants
    	 makerules: add .VARIANTS alias for .CC-
    	 option.c: fix bug that omitted readonly option values in .mo
    01-04-24 makerules: :DLL: sets VARIANT=DLL
    01-04-18 object.c: fix CC_NATIVE!=CC_ASCII buffer overflow
    	 make.probe,makerules: mvs.390 adjustments for CC.LIB.DLL=symbol
    01-04-01 scan.c: fix * scan match bug that gave up too soon
    01-03-08 printext: handle %*C
    01-02-26 makerules: CC.SUFFIX.STATIC get .ARCHIVE attribute
    	 makerules: add .NO.ARPROFILE to defer to dll prereqs for dll target
    	 pkg-X11.mk: check libXmu.sa for openwin
    01-02-14 make.probe,makerules: add CC.DLL.LIBRARIES, CC.DLL.ALTERNATES
    	 make.probe: linux needs CC.DLL.LIBRARIES=-lc for binary compatibility
    	 probe.win32: change to CC.STATIC=-Bstatic, dynamic is now the default
    	 makerules: drop .SCAN.IGNORE for .DO.INSTALL.DIR
    	 makerules: fix .SHARED.BIND. to pull in dynamic refs
    	 makerules: change .OFFICIAL diff style to -u
    	 mam: add `bind -lX [dontcare]' to simplify library binding
    	 command.c: fix job deadlock bug that used archive before it built
    01-02-07 Scanrules.mk: add .cxx for C++
    01-02-02 makerules: bias package search to viewpath and make installroot
    	 makerules: *.req can be down the view
    01-01-01 --- release 4.1 ---
    	 expand: fix :D: to preserve leading / -- how long has this been wrong?
    	 makerules: fix .PACKAGE.INIT. for dir == /
    	 makerules: $(PACKAGE_PATH) is list of default package root dirs
    	 makerules: add recurse=list to list recursion order and exit
    	 makerules: _BLD_DLL==1 when building dll's
    	 makerules: link dll with static -l*
    	 makerules: check =l% bound dir in .REQUIRE.-l% PACKAGE_%_LIB
    	 expand: eliminate loops from :W=O:
    	 parse: add exit [code]
    	 bind: eliminate dups for 2d glob
    00-12-25 makerules: add header arg to :YYPREFIX:
    	 makerules: add :T=AF: for .ARCOPY
    	 probe.win32: add cc path *and* args to first line to avoid hash clash
    00-12-18 ppcc: check for old bash
    00-12-15 makerules: handle uwin $(CC.DLL) => -D_BLD_DLL change
    00-12-14 main: initialize version with fmtident()
    00-12-12 makerules: bias :PACKAGE: search for $(INSTALLROOT)
    	 make: use stat() instead of access() for better NFS behavior
    00-12-11 makerules: _BLD_DLL only for _DLL lib members
    00-12-03 debug.mk: add %.inc for -H include nesting
    00-10-31 option: --corrupt={accept|error|ignore}, --mismatch => --corrupt
    	 makerules: req file must be seen at of before the lib
    	 makerules: fix AWK and NAWK default definitions
    	 makerules: physical=1 => 2d iff in 3d
    	 pkg-tcl.mk: add CC.DLL, don't clobber TCLROOT
    	 makerules: define _PACKAGE_foo in .PACKAGE.INIT.
    	 makerules: add .VIEW to .MAMEDIT and .MAMACTION
    00-10-28 makerules: drop MAKEFILES filter on .SELECT. (why was it there?)
    00-10-26 make.c: fix .JOINT sync bug
    	 makerules: add $(PACKAGES expr) and :VARIANT: rhs expr
    	 expand.c: add :T=F[BCFLPR]: to test file type
    	 makerules: cut down the number of --mam -L options for .req
    00-10-25 makerules: set +x => set -
    	 makerules: add set - to .req MAM action for zsh
    00-10-24 makerules: add :PACKAGE: name:lib=lib:include=include name:command
    	 makerules: add :VARIANT: to cc-%
    00-10-18 C+probe: mac os10 additions
    	 add cc.darwin.ppc for max os10
    00-10-16 object.c: don't compile makefile prereqs if state.base
    00-10-12 misc.c: add %x and %X formats to printf extension
    00-10-04 makerules: fix bug that passed -I- to non--I- CC
    00-10-03 makerules: add :YYPREFIX:
    00-09-21 expand.c: add libxxx and xxx to makefile ordered prereqs
    00-09-07 makerules: handle rhs a=b in :LIBRARY:
    00-08-11 archive.c: add aix <bigaf> archive format
    	 bind.c: add glob() gl_intr check
    00-07-17 makerules: fix $(cctype) freeze in makerules.mo
    00-06-20 makerules: mam_lib_* always checks lib/lib/* file
    00-06-19 makerules: generate dll in lib.so/libNN.dll
    00-06-01 main,state: a few _UWIN tweaks for W98 FAT
    00-05-31 shquote: fix for `foo == bar'
    00-05-26 option: fix scanargs() bug that skipped some targets before options
    00-05-22 makerules: drop .ORIGINAL.ALL
    00-05-11 makerules: add :PACKAGE: { a b } to pick first of a b (thanks Dr. ek)
    00-05-01 makerules: add $(STDCAT) initialization
    00-04-01 makerules: add skeleton=1 to mkdir virtual directories in 2d
    	 makerules: add CATALOG and ERROR_CATALOG
    00-03-17 make.probe: fix CC.NMEDIT to grab only external text symbols
    	 makerules: add :NOOPTIMIZE:
    	 makerules: allow N.Ntag :LIBRARY: versions (and dll.custom)
    	 makerules: insert $(*FLAGS_DEFAULT) on *FLAGS
    	 makerules: don't omit -L*/local/* even if in CC.STDLIB
    	 parse.c: `unknown operator' now a warning
    00-03-07 pkg-X11.mk: add -lXaw candidate required libraries
    00-03-06 add probe.lcl check
    00-02-14 --- release 4.0 ---
    00-02-10 Makerules: add CC.DLLBIG, :PACKAGE_INIT:
    	 Makerules: add .ARCHIVE.OMIT. to .ARCLEAN.LIST.
    	 Makerules: adjust :PACKAGE: search for X11 => X
    	 Makerules: add .COMMON.SAVE to .LIST.PACKAGE.* source actions
    	 Makerules: fix setv PACKAGE dirs
    	 Makerules: add $(PACKAGE_LOCAL) and package_local=arch cmd prefix
    	 Makerules: apply %.X>% for `f :: b.X'
    	 state.c: add local skew test for touch(3) { utime(2) or utimes(2) }
    	 make.c: don't apply metarule if lhs has dir and metarule doesn't
    00-02-08 believe if state.believe>0 and  view level >= (state.believe-1)
    	 pkg-X11.mk: add PACKAGE_X11_VERSION=6 for X11R6 installations
    	 pkg-X11.mk: add -ldnet_stub for osf.alpha
    	 Makerules: fix .REQUIRE.-l%
    00-01-31 Makerules: add $(CC.SUFFIX.LD) in .SHARED.REF.lib
    00-01-25 Makerules: add _MAKE_PROBE_WORKAROUND_ for broken cc -G like sco.i386
    00-01-11 Makerules,probe.win32: -Bwhole-archive + -Bstatic -- whew!
    	 Makerules: make $(LICENSEFILES) for --mam
    	 Makerules: add $(DICTIONARY) to USAGE_LICENSE
    	 make.probe: hosttype now in C.probe
    	 expand: fix :P=L: path buffer overrun
    99-11-11 expand: add :P=W: for astlicense()
    	 expand: :P=N: null input generates null (not '')
    	 bind: fix 2d globv() and bindfile() by adding state.view[].root - wow
    	 bind: fix 2d :P=L=*:
    	 mam: capture important empty exec make-done pairs
    	 main: make sure external.pwd is valid
    	 Makerules: iffe --static=x => iffe -S x
    	 Makerules: explicit :INSTALL: inhibits :: install
    	 Makerules: add MM2HTML
    	 Makerules: install cc- => cc-install
    	 Makerules: add .MAM.CCFLAGS to handle .CC.NOOPTIMIZE
    	 option.c: clean up --errorid
    	 option.c: add set readonly for state.readonly hook
    	 Makerules: use set readonly for INSTALLROOT and PACKAGEROOT
    	 make.probe: sco CC.WARN=-w3
    	 make.probe: CC.MEMBERS => CC.LIB.ALL CC.LIB.DLL CC.LIB.UNDEF
    	 expand: add :U[!]: for uniq [file equality] list
    	 Makerules: IFFEFLAGS initialized in .MAKEINIT
    	 rule: make sure PWD and VPATH are both logical or physical
    	 parse: add "x" <|>[=] "y"
    	 Makerules: add LDLIBRARIES to .SHARED.lib
    99-10-31 Makerules: add :PACKAGE: => :package: if lhs
    	 Makerules: :MAKE: with no rhs driven by MAKEDIRS and MAKESKIP
    	 Makerules: add :Q: to "::" assertion scope items (yuk)
    	 Makerules: add LICENSE hooks, USAGE_LICENSE
    	 expand.c: add :P=G: to do viewpath glob, :W=O: to order subdir descent
    	 expand.c: add :O=N:
    	 expand.c: pretty up :Q:
    	 expand.c: add :P=V0: for top view logical name of bound file
    	 rule.c: add globv() for rhs patterns -- strictly . relative down view
    	 make.probe: fix nmflags logic (for aix -p, portable not)
    99-10-01 Makerules: add %.iffe
    	 make.c: handle metarule .ACCEPT
    99-07-17 mam.c: outer make...done for virtual joint target
    	 command.c: fix job deadlock detection
    	 Makerules: don't pp probe if CC.CC == ""
    	 Makerules: allstatic=1 for +l propagation, 0 for item only
    	 Makerules: fix $(.SHARED. ...) usage
    	 Makerules: :INSTALL*: now handles dir on rhs
    	 Makerules: add %.cxx
    	 Makerules: add .ti to clobber list
    	 Makerules: cc-: `~' => space if specified, otherwise `,' => space
    	 Makerules: add recurse_enter and recurse_exit
    	 misc.c: add %[eFfFgG] print formats
    	 expand.c: generate() lists primary and secondary by default
    	 Makerules: add .author and PROTOID to PROTOCOPYRIGHT
    	 Makerules: allow state on :INSTALL*: rhs
    	 Makerules: .CC.MEMBER: jobs>0 workaround: a bug coverup
    	 Makerules: add :PACKAGE: debug profile CC.LIB.TYPE
    	 expand.c: fix putptr(0) base addr switch
    	 .SCAN.IGNORE: don't block on these - duh
    99-07-17 --- release 3.6 ---
    99-06-24 Makerules: fix .SHARED.ON. test
    99-06-15 make.probe: shlib before others, /var/shlib, -none == ! -all
    99-06-14 Makerules: +lfoo applies to self, not to .req members
    99-05-09 option: separate usage string stream
    99-05-01 main: long options
    99-04-22 Makerules: fix :LIBRARY: for version "-" (no version)
    99-04-01 Makerules: -mam cleanup
    	 Makerules: %.req version bug fix
    	 Makerules: :PACKAGE: :nolibrary means it -- don't pull it in
    	 Makerules: .REQ. fix
    	 Makerules: fix .req -mam cc script
    	 expand: regfatalpat() for regcomp() pattern in error messages
    	 option: first optget() interface -- could be more complete
    99-03-17 Makerules: %.req just binds -- duh
    	 Makerules: .RECURSE clears .RWD.
    	 Makerules: handle `lib - :LIBRARY: ...' => no VERSION
    	 make.probe: CC.DEBUG CC.HOSTTYPE CC.OPTIMIZE CC.STRICT CC.WARN
    	 main.c: command line scripts done after .MAKEINIT
    	 main.c: test 0x00020000 to close openfd before coexec
    	 make.c: D_scope prereqs take effect in make() too
    99-03-01 Makerules: add :P=C: to .MANIFEST.
    99-02-14 make.probe: move some init stuff from C.probe
    	 make.probe: deal with gcc/ld writing errors to stderr with 0 exit code
    	 trap: clean up .INTERRUPT interface
    	 Makerules: :PACKAGE: -l* .MULTIPLE
    	 Makerules: fix :: :LIBRARY: for cmd and lib by same name
    	 object.c: retain D_global in load()
    	 Scanrules: fix .PFX.INCLUDE test
    99-01-23 Makerules: *.req.REQUIRE : .IGNORE
    	 Makerules: add -f $(MAKEFILE) to .RECURSE $(MAKE) args
    	 Makerules: .REQUIRE.-l% checks $(PACKAGE_%_LIB)/lib/% first
    	 Makerules: make :PACKAGE: search picky about version
    	 Makerules: handle :PACKAGE: -lfoo
    	 Makerules: PACKAGE_%_VERSION defined
    	 make.probe: use full path for NM, etc.
    	 make.probe: libpath not added to CC.STDLIB
    99-01-11 Makerules,make.probe: CC.MEMBERS.UNDEF
    	 Makerules: fixed .SHARED.lib wrt :PACKAGE:
    	 make.probe: tweak CC.STDLIB
    98-12-25 Makerules: :LIBRARY: initializes VERSION var if not set
    	 Makerules: add tgz, tarball; drop update*; pax and tgz recursive
    	 Makerules: tarball uses VERSION
    	 Makerules: `:: dir' adds dir to manifest
    	 Makerules: arch-$(_hosttype_).mk architecture specific additions
    	 Makerules: $(CC.DLL) uses local *.lib
    	 expand: add :P=N: for 'native-path'
    	 expand: :P=S=subdir: to handle recursive manifest
    	 parse: fix  splice bug that activated rules direcive
    	 rule: .READONLY external support
    	 bind: (P_readonly|P_terminal) does not get attribute assoc
    	 bind: add rule_compare() and rule_hash() for case hacks
    	 option: -o writeobject (on by default)
    	 expand: regcomp(REG_SHELL) needs REG_LEFT|REG_RIGHT -- duh
    	 rule: include + "file" to include file as global makefile
    	 make,rule: fix state.force and P_force for P_dontcare
    98-12-25 --- release 3.5 ---
    98-11-11 expand: :G=x: tokenized
    	 add ms %.def:%.sym
    	 make: recheck require_p prereqs
    98-11-01 expand: fix ignorecase bug in :L:
    98-08-11 probe: add probe.ini for arch specific shortcuts
    	 probe: add opional CC.MAKE.OPTIONS
    	 Makerules: check CC.MAKE.OPTIONS
    	 bind.c,scan.c: a few more uwin file path workarounds
    	 parse.c: readline() now converts \r=>
    	 variable.c: V_functional looks for "v->name" and ".v->name." rule
    98-07-17 Makerules: check before assuming /usr/lib or /lib
    	 command.c: fix P_before P_repeat FAILED bug
    	 Makerules: add .UNBIND to .PACKAGE.LIBRARIES. (must be a better way)
    	 Makerules: add static=1 to favor lib instead of dll (except for std)
    98-05-26 make.probe: add /usr/lib /lib verification
    98-05-01 rule.c: add .RUN .WAIT for background job control
    	 rule.c: add .MAKEPROMPT .MAKERUN sequence points
    	 rule.c: add .RESET to reset rule info to start state
    	 parse.c: interactive sfpoll sfstdin and state.coshell->msgfp
    98-04-01 expand: plug leak by calling regfree() for :C:
    	 Makerules: adjust .IFFE.REF. fix to not include package being built
    	 Makerules: add %.cpp for C++
    	 scan.c: don't tokenize quoted implicit prereqs!
    98-03-17 Makerules: fix .IFFE.REF. to expand package include dirs
    98-02-14 Makerules: fix .IFFE.REF. to expand required libraries
    98-01-23 Makerules: add _hosttype_ to .MAM.INIT
    	 Makerules: :PACKAGE: x attempts include - "pkg-x.mk"
    	 Makerules: handle :LIBRARY: rhs +l*
    	 pkg-tcl.mk: initial release
    98-01-11 Makerules,probe: add CC.SHARED.REGISTRY and CC.SHARED.REGISTRY.PATH
    97-10-31 Makerules: CC.PIC not that easy to deprecate!
    	 Makerules: fix -L option for *.req rule
    	 Makerules: LDRUNPATH unset by default
    	 Makerules: no CC.SUFFIX.LD to AR
    97-10-11 Makerules: fix :LIBRARY: *.req prerequisites
    	 probe: fix ld probe, add CC.SUFFIX.LD=".def .exp" for uwin
    	 make.c: REQUIRE map => - marks rule virtual
    97-08-11 Makerules: .BASE.DATE.FORMAT. for y2k
    	 Makerules: drop weird xxx.a install in .SHARED.DEF.lib
    	 Makerules: add $(.sh.) as non-frozen version of $(sh)
    97-07-17 Makerules: move $(MAKELIB) to the front of PACKAGE search
    	 Makerules: required libraries linked with dll too
    	 version.c: tighten initdynamic[] loop termination
    97-05-09 Makerules: /usr/local/arch/$(_hosttype_) first in LCLDIRS
    	 Makerules,make.probe: add mvs.390 dll support
    	 expand: don't :T=A: if .SCAN.IGNORE
    	 variable: allow `export name=value'
    	 Makerules: allow `:MAKE: name=value' => `export name=value'
    	 Makerules: bias package binding to fully qualified PATH dirs
    	 Makerules: IFFEFLAGS uses CCLDFLAGS instead of LDFLAGS
    	 Makerules: don't change -Wl., in cc-% (hack alert)
    	 Makerules: CC.PIC deprecated for CC.DLL
    	 Makerules: _INSTRUMENT_ deprecated for _BLD_INSTRUMENT
    	 Makerules: _TRACE_ deprecated for _BLD_DEBUG
    	 command: -t attempts to touch fs .o as well as .a/.o
    96-12-25 --- release 3.4 ---
    	 add CC.LD.DYNAMIC and CC.LD.STATIC to make.probe and makerules
    	 add .PROBE.LOAD and .PROBE.SPECIAL. to catch/start early probe
    	 addfile(xxx) for xxx.exe on _WIN32
    	 bind.c: check for _WIN32 C:/ prefix
    	 parse.c: -FUNCTIONAL now clears var.functional too
    	 Makerules: .CC.MEMBERS. fixed for small ARG_MAX systems
    	 Makerules: OFFICIAL file now in lower view
    	 Makerules: drop -G* from CC.PROFILE
    	 Makerules: remove global +lxxx => -lxxx==+lxxx
    	 archive.c: add `/*/' to SYMDIR_port (for sgi.mips4)
    	 Makerules: if $(CC.PROFILE) and $(CC.PIC) then don't install .ARCHIVE
    	 make.c: relax `modifying lower view file' message via dontcare
    	 Makerules: fix +lxxx MAM bind
    	 Makerules: fix :LIBRARY: req file generator
    	 Makerules: fix :PACKAGE: LIBDIR search
    	 ppcc: install in $(MAKELIB)
    	 ARG_SCRIPT: fix bug that mishandled `+' and `&' in cmd line targets
    	 Makerules,probe: add CC.SUFFIX.LD and ldscript for ld scripts
    	 Makerules: add $(sh command): where has this been hiding
    	 a:-TARGET now works
    	 .ARCHIVE not scanned if rule.scan==.SCAN.IGNORE
    	 :LIBRARY: sets .MAIN.TARGET. too
    	 make.probe: don't automatically place /usr/lib last
    	 make.probe: add CC.SUFFIX.LD
    	 Makerules: handle cc-opt1,-opt2 by splitting options on ,
    	 bind.c,metarule.c: handle _WIN32 directory ignorecase
    	 Makerules: add :DLL: .DLL for dll generation
    	 Makerules: fix .MAKEINIT premature :T=F: that botched .SOURCExVPATH
    	 object.c: fix to handle 01/24/89 format objects (yes it still works)
    	 ppcc,makerules: generalize $(CC.DIALECT) option passing
    	 metarule: case sensitive match for patterns matching `[-+]*'
    	 archive.c,object.c: (Sfoff_t) for K&R compilers
    	 MAKEFILES=Nmakefile:nmakefile:Makefile:makefile -- thanks bill
    	 MAKEARGS=Nmakeargs:nmakeargs:Makeargs:makeargs -- thanks again bill
    	 probe: add CC.LD.RUNPATH
    	 makerules: add LDRUNPATH and CC.LD.RUNPATH support
    	 makerules: tone down PTR prereq scan
    	 .GETCONF: first builtin function
    96-11-28 ccmaps .mo for ascii/ebcdic compatibility
    96-10-31 outstanding bug reports addressed
    	 :LIBRARY: defines _BLD_<lib>==1
    	 use PATH=$(STDDIRS):$PATH to find STDRM etc. in Makerules.mk
    	 add CC.SUFFIX.DYNAMIC for win32 .dll .lib .a
    96-10-11 metarule rhs prefix dir check even if rhs has prefix questionable=0x8
    	 alias check path suffix in bindfile questionable=0x10000
    	 add more instrument guesswork
    	 .PFX.INCLUDE headers must be .TERMINAL
    	 fix $(...) bug that let some unselected items slip through
    96-10-01 update make.probe for probe_libdir to catch alpha /usr/shlib
    96-09-09 add CC.PROBEPP to override pp probe info
    	 add $(INCLUDEDIR) and $(LIBDIR) to .SOURCE* from $(ancestor_list)
    96-08-11 --- release 3.3 ---
    96-07-17 don't pass -D-* to cc in ppcc
    	 add ``X|external-scan $(%)'' external scan
    	 clean up makerules/probe readonly
    96-05-31 fix $(".":P=L*) for no views
    96-05-09 make.probe: drop multiple / in stdlib
    	 try to stat non-readable files
    96-04-22 fix staterule()->scan assignment evaluation order ambiguity in scan.c
    96-02-29 -lxxx binds to +lxxx if +lxxx bound first
    	 add pkg to OPTDIRS
    	 cut off botched metaclose recursion unless questionable=0x100
    	 `.XXX : .USE .IMMEDIATE .ATTRIBUTE' -> `xxx yyy' -> `xxx : yyy'
    	 fix :PACKAGE: search bug that forced package name to be in root path
    	 add REGRESS + REGRESSFLAGS
    	 aliases may produce more than one :P=D: bound dir
    	 fix nonterminating D_scanned loop in scan()
    	 handle -L* on :LIBRARY: rhs
    96-02-14 $(CC.SUFFIX.COMMAND) appened only if no suffix
    	 :PACKAGE: xxx:version=n.m:static:dynamic:nolibrary:noinstall:
    96-02-07 archive scan handles multiple port|rand meta entries
    	 rescan check on (s|alt)&P_force
    	 scan A action can now set (.+) or clear (-) attributes
    96-01-31 :PACKAGE: libs now .DONTCARE
    	 fix touch bug that kept the blasted libast conf*.[ch] out of date
    96-01-01 AT&T Research
    	 uwin Makerules.mk and make.probe tweaks
    	 :I<: for literal intersection, otherwise pathname intersection
    	 convert to <regex.h>
    	 condition LN on _feature_=ln
    95-12-08 fix :LIBRARY: -lxxx probe
    	 add uwin dll to make.probe and :LIBRARY:
    	 BINED -> ED
    95-11-24 . :INSTALLDIR: does not add to all or man
    95-11-11 installed CC.SUFFIX.SHARED are now readonly
    	 CC.SUFFIX.SHARED==CC.SUFFIX.OBJECT expands -l*
    	 CC.SUFFIX.SHARED installed readonly
    	 CC.SUFFIX.SHARED hard linked to CC.SUFFIX.SHARED.major.minor
    	 P_target && D_dynamic does not imply generated (questionable=0x4000)
    95-10-11 fix :TABLE: options `no' and `NO' entries
    	 D_source is now cleared in make object for .SOURCE cross product
    	 $(^) subject to localview() too
    	 fix :WORKAROUND: for in-place changes
    	 set include=dir appends to .SOURCE.mk
    	 .ASSERT intercepts not applied to .IMMEDIATE targets
    	 -d4 lists make object prerequisite file info
    	 fix state.targetcontext expand bug that dropped too many marks
    	 add %.o:%.S to makerules/scanrules
    	 intersect() now handles invented :P=D: .. dirs not in .SOURCE*
    	 drop $(CC.REPOSITORY:@?-l??) from PPCC
    	 add sun -[Qq](dir|option|path|produce) to ppcc
    	 add proto -x to :INSTALLPROTO:
    	 fix compvar() V_oldvalue bug that put command line def in .mo
    	 internal.export -> internal.exported for proto export keyword
    	 :T=G: never matches non-target .TERMINAL
    95-10-01 add :TABLE: novariables to inhibit leaf variable assignments
    	 add preliminary long edit op names and converter
    	 D_global if not P_target (questionable=0x800 for old behavior)
    	 alias if !streq(name,r->name) (questionable=0x1000 for old behavior)
    	 fix scanrules .PREFIX.INCLUDE. handling of ../*
    	 more aggressive putbound() in bindalias() (-Q0020000 for old)
    	 `.FORCE : x' sets P_force too
    	 longest metarule patterns applied first
    	 more alias fixes
    	 move scan attribute/property additions before staterule() call
    	 :INSTALLMAP: ... scan now more selective
    	 .UNBIND now sets rule.time=0
    95-07-17 --- release 3.2 ---
    	 :F=%x: sfio 'u' internal format now handled
    	 fix .PTR.OPTIONS. initial condition
    	 fix .ERROR to work like 2.2 if !.FUNCTIONAL
    	 .FUNCTIONAL .ERROR return value: new level, no msg if already printed
    95-06-28 add *.ii to .CLOBBER. for EDG C++
    95-05-09 add SYMDIR_strict for strict ranlib uptodate check
    	 change $(!$(*:O=1)) to $(!$(*)) since lists are ok now
    	 drop .SAVE. since :: already handles it
    	 add old value to state variable changed explanation
    	 add .DO.READONLY.-xMerge
    	 unused var cleanup
    	 another make.probe preroot workaround
    	 add .CC.NOOPTIMIZE local scope
    	 handle `t {}' and strip lead space in {...}
    	 fix r==0 dereference in :P=B:
    	 don't force CCFLAGS=-g for instrument=purify
    	 fix .BIND.-l% version interactions with -lxxx.[0-9]
    	 add -o noalias to diable directory aliasing (for .INSTALL.LIST)
    	 make.probe pic test must check linker too
    	 calm down +([a-z]) => .+([A-Z]) conversion for :ALL: and .ARGS
    	 &error_info cannot be in a static initializer
    	 .OFFICIAL uses .MANIFEST. instead of .SOURCES.
    	 fix scope var bug that appended twice
    	 add - stack debug command to query
    	 drop extra .so's from ship.list.bin
    	 state.mam.out && !state.mam.port doesn't rebind after build
    95-04-01 `:: xxx' marks xx .TERMINAL
    	 fix recursion bug in :G:
    	 define PACKAGE_* vars if !mam too
    	 fix ciadb to exclude headers that may generate %.o (e.g., *.c)
    	 fix stray M_mark bug caused by expand() inside intersect()
    	 fix :INSTALLMAP: with no lhs
    	 :PACKAGE: is a little less restrictive on package root search
    	 use $(CCLDFLAGS) in %:%.s
    	 change :T=G: to check .TERMINAL state before .TERMINAL
    	 fix ppcc.sh pattern match ksh93ism for bsh compatibility
    	 fix PROTOFLAGS expansion with :Q:
    	 generated .SCAN.c do not get .PFX.INCLUDE
    	 scan prereqs for .JOINT targets are in staterules(PREREQS)
    	 change obsolete MAM -expandview ref to static*,port*
    	 fix trap bug that used elementsof(int*caught)
    	 makerules PTRMUST -> PTRMKDIR
    	 alpha archive symbol directory has word size embedded _64E[BL]E[BL]_
    	 fix   in output of recursive print -um
    	 fix bindfile() .. test for terminal directories [via Rich Drechsler]
    	 tablook() prototype tweak
    	 fix putbound() test in bindfile [via Dan Tiernan]
    	 beef up makerules $SHELL -n test
    	 drop newlines from PROTOCOPYRIGHT for MAM
    95-03-19 fix .AFTER job freelist bug in trigger() [via Rich Drechsler]
    	 add makerules STDDIRS; SYSRM -> STDRM {cmp,cp,ln,mv,rm}
    	 clean up makerules INSTRUMENT_* interface
    	 -v no longer turns on ppcc verbose
    	 fix cc- MAKEPATH override by $(=)
    95-02-14 fix targetcontext mkdir() test
    	 fix printarg() for proper sfio interface
    95-01-19 add CC.ARFLAGS for $(CC) that generates libraries
    	 add CC.DIALECT=PTRIMPLICIT for implicit C++ ptr dir name
    	 add CC.DIALECT=PTRMKDIR if C++ local ptr must exist
    	 add CC.DIALECT=PTRCOPY if C++ PTRMKDIR contents copied
    	 fix CC.READONLY probe to cast the const pointer assignment
    	 punt() now assumes oldmake has mam if options set
    	 add a few .SPECIAL's in ::
    	 fix rule.time update for .NULL action in trigger()
    	 add A_* flags instead of assertion() set.clear, etc.
    	 OP_NONE assertions are A_special
    	 x :LIBRARY: makes x virtual prereq of .ALL
    	 "local" statement mods for operator and function arg handling
    	 local same-name same-name gives dup name initial value of 1
    	 local name=value now accepted
    	 local -[n] arg ... sets $(1) ... [empties missing up to n]
    	 local (formal ...) actual ... sets formals from actuals
    	 $(;) returns the state data (formerly $(#))
    	 $(#) is the arg count from local -[n] | (formal ...) ...
    	 add TABLE.mk for :TABLE: table and map lookup
    	 add SS.mk for :SS: directory hierarchy subsystems
    	 don't forceread if global (questionable=0x400 for old behavior)
    	 add -o targetcontext to expand action in target dir context
    	 add state.context and MARK_CONTEXT for state.targetcontext
    	 fix a few more alias bugs
    	 .MAKE .LOCAL actions can contain parent scope assignments
    	 add base and delta common actions for pax -z support
    	 add :SYSTEM: to :SS: in SYSTEM.mk and delete SS.mk
    	 fix rebind to first clear D_entries|D_scanned
    	 add "*.[sS]|*.[aA][sS][mM]" to ppcc source list
    95-01-01 fix .CLOBBER $(-global) expansion
    	 .NULL metarule now provides equivalence for :G:
    	 avoid multiple entries in make.probe CC.REQUIRE.++
    94-12-25 ppcc, MAM -l<shared>, probe tweaks
    	 fix port/rand ar touch bug that modified member terminator
    	 fix .DO.INSTALL bug that asserted x : x
    	 avoid a few more 'not compiled' panics
    	 add -o mam=<type>[,noport] to inhibit porting hints
    	 drop mam_port and use noport mam option
    	 fix V_retain bug that took value from lowest view statefile
    	 fix PACKAGE .SOURCE.(h|a) that blew the CC.STD(INCLUDE|LIB) order
    	 fix .REBIND to work like .UNBIND on directories
    	 PACKAGE lib not .DONTCARE by default
    94-11-11 --- release 3.1 ---
    	 detect loops in complete() to avoid `did not complete'
    	 fix D_entries|D_scanned propagation in merge()
    	 fix .BIND. view and state.targetview propagation
    	 add :WORKAROUND: for external distribution workarounds
    	 merge(MERGE_ALL) does not propagate rule.scan==SCAN_NULL
    	 .OFFICIAL diffs changed files into ./OFFICIAL
    	 fix scan attribute propagation interaction with dirscan()
    	 fix uninitialized od reference in bindfile()
    	 fix ppcc -O over shift and empty rm
    94-10-01 CC.DIALECT DOTI : *.i accepted as preprocessed input
    	 CC.DIALECT TOUCHO : cc link may touch *.o
    	 $(CCC) dropped in favor of simpler $(PPCC)
    	 $(FEATURE) changed to $(IFFE)
    	 add -o mam=<type>[,dontcare] to list dontcare targets too
    	 fix staterule() to accept top view state if time matches
    	 fix bindfile()+putbound() for ..
    	 fix VOFFSET,VROOT for non-3d
    	 fix bindstate() recursion
    	 fix metaclose() bug that forced artificial metarule ordering
    94-08-11 add state.questionable mask (looks like it should go but not sure)
    	 move some state.test bits to state.questionable
    	 add MAM generated attribute
    	 add fs3d view loop test
    	 Os option arguments must be specified
    94-07-17 --- release 3.1 ---
    94-06-11 add -o believe=level (-B level) for 2d
    	 -b no longer implies -c
    	 -b implies no makerules
    	 uncouple state.keepgoing from state.mam (should have learned by now!)
    	 dirscan() sets rule.bound and rule.time
    	 add .SYNC : file [edit-select]
    	 fix .QUERY longjmp active frames and error trap hold
    	 fix pattern association parse that botched ../*%*
    	 avoid pathcanon() in metarule makerule() calls
    	 change include from control statement to immediate rule
    	 use rule in include list uses action as include file filter
    	 add makerules mam_port=0 to inhibit -o mam=static ${mam_*} mappings
    	 promote lower view state to top on load if no previous top iview state
    94-05-22 virtual preview not propagated
    	 fix nested loops in file input
    	 fix unalias() bug that dropped original binding
    	 fix merge() bug that called bind() while bind in progress
    	 fix -ptr *again* for CC 3.0.3
    	 add $(^) for current line in scan
    	 :A>pattern: matches rule prereqs
    	 fix statevar stateview search that unnecessarily forced re-scan
    	 .PARAMETER file checks now done after .INIT
    	 update CIA rules to use DOT instead of DAG
    94-04-01 .ERROR made for levels > 0; return 1 inhibits message print
    	 $(.ERROR) set to level and message text inside .ERROR
    	 stateview() now binds before searching state views
    	 fix CC.SO install for live replacement
    	 add .COMPDONE to fit the .INIT+.DONE pattern
    	 add rule.mark and M_* to eliminate mark clashes
    	 add .INTERRUPT.<signal> for signal specific handlers
    	 add .ALARM:<elapsed> immediate rule to set alarm
    	 add $(.ALARM) to be absolute time for next alarm, 0 for no alarm
    	 add .SYNC immediate rule to sync statefile
    	 maketop() now resets property when complete
    	 maketop(P_ignore) temporarily sets keepgoing=1
    	 xxx -> .XXX immediate test for all `no operator on line' statements
    	 .FORCE : xxx forces xxx to be new
    	 { action } -> .ALWAYS :$("t")action
    	 immediate a b c -> .IMMEDIATE : a b c
    	 attribute a b c -> a b c : .ATTRIBUTE
    	 a b c { action } -> a : b c$("t")action
    	 :MAKE: allows rhs a/b
    	 .DO.l.CC dropped -- let C++ fend for itself
    	 (<id>*)<stuff> can appear as target
    	 $("":D) no longer produces ``.''
    	 print -n -u[0-9m] -f "format" +-[io] path -p command data ...
    	 read -n -u[0-9m] +-i path +-o path -p command variable
    	 -uxxx may appear in $(INSTALLROOT)/lib/lib/<LIB>
    	 fix scan | ... % | bug that forced trailing space
    	 replace CC.OBJ and CC.SO with CC.SUFFIX.*
    	 .MAKE .OPERATOR prereqs made before operator applied
    	 add .PROBEINIT to .MAKEINIT and "::"
    	 .SHARED. now links with CC.SUFFIX.SHARED sibling library if it exists
    	 fix alias .UNBIND
    94-03-01 unify mam with gmake (additions done by gsf)
    	 -o mam={dynamic|regress|static}[:file[:[label][:root]]]
    	 -M no longer implies -nF
    	 -o mamtrace=file (-m) dropped
    	 -o regress=root dropped
    	 -o never (-N) added to override .ALWAYS
    	 fix scan bug that assigned strategy before binding
    	 frozen V_functional always causes .mo recompile
    	 add oldname(r) to fix unbind bug that omitted putbound(r,0)
    	 ``else if'' now accepted for ``elif''
    	 complain about extra chars after else and end
    	 add :T=Z[CERS]: for {cancel,event,relative,state} time
    	 fix circular implicit prereq actions
    	 fix aix shared library probe
    	 finish now handles errors in .MAKEDONE and .DONE
    	 fix stray D_mark unbind with D_markbind,D_markprereq,D_markscan
    	 fix :READONLY: probe for mips
    	 base rules unbound after reading (so make can install them!)
    	 delay statefile load until after makefile read
    	 add complete() for MAKING implicit prereq
    	 add CC.REPOSITORY with repository dir value
    	 delete PTREPOSITORY from CC.DIALECT
    	 stop .INSERT|.APPEND from adding duplicate prereqs unless .MULTIPLE
    	 .QUERY now pushes an active frame (shows up in $(<))
    	 fix state view resolution in stateview()
    	 fix :G=a/b: with no %
    94-02-14 warn about implicit reference while action in progress
    	 add print -opath
    94-01-31 .CLEAR now checks staterule before freeing prereq list
    	 .UNBIND now clears D_global, D_regular and preview
    	 add :F=%(time-format)T:
    	 add :F=%(invert|lower|upper|variable)S:
    	 change :F=[LUV]: to :F=%(lower|upper|variable)S: with obsolete warning
    	 fix .MEMBER view/preview mismatch that triggerred unnecessary actions
    94-01-11 $("":T=R) operates on current date
    	 add print -n -u[12m] -f "format"
    	 fix \<newline> action parse
    93-12-01 --- release 3.0 ---

### probe changes

    02-10-30 probe.c: reset proc->rfd after sfnew() to avoid close() error
    02-09-21 probe.c: handle strlen(base) != BASE_MAX
    02-09-11 probe.c: add more override docs
    02-01-30 probe.c: add probe.ini check to match libast/pathprobe()
    01-12-03 probe.c: return HOME relative path if readonly/non-suid fs
    00-08-11 probe: fix non-suid generation check
    00-01-11 probe: fix -t with writable info
    99-09-01 probe: add --override
    99-05-09 probe: long options

### ss changes

    04-07-22 ssd.c: access() => eaccess()
    03-07-29 ssd.c,features/cmd: add utmpx support
    99-05-18 ss: long options
    97-08-11 ssd: fix now used before defined bug
    95-05-09 fix ssd nlists feature tests
    	 add a few more utmp file macros from <utmp.h>
    95-02-14 fix an extremely botched since() macro
    95-01-19 fix user idelt time check that broke loop too soon
    	 checks every 10s, updates every CS_STAT_FREQ if not interesting

### libast changes

    06-02-14 comp/iconv.c: fix uwin iconv_list() /reg/ generator
    06-02-10 port/astconf.c: relax standard prefix filter
    06-02-08 sfrd.c,sfsync.c: lock logic bug fix
    06-02-01 port/astlicense.c: add { parent incorporation }
    06-01-26 port/astconf.c: fix { LIBPREFIX LIBSUFFIX } length
    06-01-06 features/lib: change _UNIV_DEFAULT probe to use cross{...}
    06-01-04 misc/stk.c: fix n**2 realloc behavior
    06-01-01 include/sfio.h: export { _Sfi _Sfmaxr }
    05-12-13 string/chresc.c: handle \C-X => control-X, \M- => ESC
    05-11-22 regex/regcache.c: add, convert string/strmatch.c to regcache()
    05-10-06 string/ccmap.c: update ebcdic-u to be idempotent
    05-09-28 vmalloc: snarf from kpv; fixes large block brk() thrashing
    05-09-26 misc/magic.c,misc/magic.tab: handle latest vcodex header
    05-09-12 misc/optget.c: reset opt_info.offset on error
    	 string/strtoi.h: strton() '.' multiplier only if m>1
    	 string/fmtesc.c: add unadvertized FMT_PARM for FMT_SHELL
    05-09-09 string/fmtesc.c: fix FMT_SHELL logic w.r.t. [$`]
    05-08-11 string/strerror.c: fix { sys_errlist sys_nerr } prototypes
    05-08-03 sfio: snarf sfvaprints sfaprints
    05-07-21 port/astconf.c: retain most recent synthesized lookup
    05-07-20 sfio/sfsetbuf.c: default file io size now 64K on all systems
    05-07-17 ccmap*: add microfocus cobol EBCDIC_U
    05-06-29 regex/regcomp.c: fix the A & B inline flag logic
    05-06-15 include/recfmt.h: add fs format flag to fmtrec()
    05-06-14 error.c: add ERROR_OPTIONS { break count match }
    05-06-07 features/stdio: drop FEATURE/limits to fix bootstrap circular dep
    05-06-02 features/*,Makefile: drop vestigel iffeio.h bootstrap workaround
    05-05-31 string/fmtbuf.c: unlock (spin) before each return -- doh
    05-05-30 sfio/sfpkrd.c: work around macos 10.4 recv(MSG_PEEK) bug
    05-05-27 regex: add REX_NEST (?%[S.][T.][OT])
    	 magic.tab: ammend bsd db magic
    05-05-23 regex: REX_NEST (?%[D.][E.][L.][Q.][oc]...)
    05-05-21 regex: state.fold[] is now locale specific -- doh
    05-05-19 regex: add REX_NEST (?%lt;>[]""...) %(...) nested match
    05-05-15 recfmt.h: add recstr() reclen() fmtrec()
    05-05-13 optget.c: allow boolean options to take numeric values
    05-05-12 recfmt.c: add to recfmt.h, adjust Recfmt_t encodings
    05-04-30 sfio: add sfmaxr(), default 64K
    05-04-22 comp/omitted.c: fix magic() logic for files < 512 bytes
    05-04-20 cdt: snarf update from kpv; void* Dt_t.user added
    	 misc/error.c: library => ERROR_LIBRARY
    05-04-19 regex/regcomp.c: handle REG_SHELL [^...] == [!...]
    05-04-11 tm/tmxscan.c: handle yyy.mm.dd[-+.]hh.mm.ss.nnnnnn
    05-04-07 regex/regnexec.c: fix out of bounds boundary check -- ouch
    	 features/align.c: add jmp_buf to the alignment mix (ia64)
    	 vmalloc/vmhdr.h: add jmp_buf to the alignment mix (ia64)
    05-03-31 misc/optget.c: fix option { - _ } separator matching
    05-03-30 misc/glob.c: eliminate superfluous GLOB_NOMATCH stat() calls
    05-03-24 port/astwinsize.c: include <sys/ioctl.h> if possible
    05-03-23 string/ccmap.c: add ebcdic-m mvs cobol table
    05-03-11 comp/omitted.c: handle utime[s](const,const)
    	 comp/conf.tab: fix linux PID_MAX probe
    05-03-10 comp/setlocale.c: LC_* value "" => unset -- doh
    	 misc/optget.c: reorder _PACKAGE_astsa code for msgcc
    05-03-08 misc/optget.c: delete leading space in STYLE_nroff output
    05-03-07 sfio/sfhdr.h: drop extern _sfdscan -- clashes with sfvscanf.c static
    05-03-01 tm/tminit.c: add tmlocaltime() for tzset() getenv() override workaround
    05-02-20 features/tvlib: tmsettimeofday only for systems that have settimeofday
    	 features/float: fix mvs.s390 NaN tests
    05-02-18 tm/tmxmake.c: fix <0 west of GMT bug that warped to 1800's -- wow
    05-02-11 port/mnt.c: handle lynxos MOUNTED=/etc/fstab
    05-02-08 features/float,sfio.h,sfcvt.c,sftable.c: add INF and fix NAN
    05-02-04 features/lib: add _std_strtol (for lynxos)
    	 include/ast_std.h: add _std_strtol tests
    	 comp/strtod.c: #define S2F_function strtod
    	 misc/signal.c: fix ancient bsd SV_INTERRUPT vs. SV_ABORT clash
    05-01-11 sfio/sfmove.c: try to seek(fr) when fw==0
    	 comp/omitted.c: intercept utimes() too
    	 comp/omitted.c: add DOSPATHVARS env var path value conversions
    	 features/tvlib,tm/tvtouch.c: check for utimets()
    	 misc/optget.c: handle '-' or '_' option word separators
    	 sfio/_sfopen.c: allow stream mode changes after initialization
    	 sfio: sync with kpv: SF_SYNCED fix for ksh input loss bug
    05-01-09 tm/tmxfmt.c: fix %6N for n<100000000
    05-01-08 regex/regcomp.c: conj() => con() to avoid C99 clash
    05-01-05 tm/*: fix { %U %V %W } logic -- my head hurts
    04-12-30 tm/tmxtime.c: fix tm_isdst<0 loop
    04-12-23 vmalloc/vmbest.c: fix vmresize bug that didn't 0 new data
    04-12-19 misc/optget.c: broaden - long option match
    04-12-09 string/strtoi.h: fix terabyte 't' suffix math
    	 string/strmatch.c: flush cache on locale change
    04-12-01 tm/tmsleep.c: add
    	 tv.h,tv*.c,tv.3: move from pax
    	 tmx.h,tmx*.c,tmx.3: add high resolution tm(3) counterparts
    	 features/lib: add *another* sgi linux.ia64 memccpy bug check
    04-10-31 Makefile: __OBSOLETE__ now computed <6 months ago year>0101
    	 ccode.h,ccmapid.c: add ccmaplist(Ccmap_t*) iterator
    	 option.h,optesc.c: add 3rd arg, 1 => quote '?' too
    	 misc/magic.c: fix bug that terminated `string  a' at
    	 misc/magic.c: handle vcodex() via decompose()
    	 misc/magic.tab: add vcodex magic
    	 features/stdio: handle _LARGEFILE64_SOURCE -- oops
    	 stdio/(fseek|ftell|fseeko|fsetpos|fgetpos|ftello).c: oops^2
    04-10-28 string/swapop.c: size==-4 => size=4 and extend op=3 to op=7
    	 tm/tmfix.c: fix tm_mon<0 logic
    04-10-22 tm/tmdate.c: handle 'final day feb 2004'
    	 port/astlicense.c: add query=all|id|${...}${...}
    	 port/astlicense.c: "free" => "mit"
    	 comp/omitted.c: revert to the open source license
    	 string/stropt.c: drop siz==0 => tab is hash table
    	 include/sfio.h: incorporate <sfstr.h>
    	 include/sfstr.h: drop
    	 disc/sfstrtmp.c: drop -- use sfstrbuf()
    04-10-20 misc/magic.tab: update tar magic
    04-10-18 ufc-crypt.h,crypt_util.c: drop GPL code
    	 crypt.c: add BSD code
    	 pathpath.c: disable { $0 $_ $PWD } related root search
    04-10-01 normalize ident stamps
    	 port/astlicense.c: add type=cpl -- yeah
    04-09-25 string/swapop.c: return op < size -- duh
    04-09-23 comp/spawnveg.c: :NOOPTIMIZE: -- volatile sometimes ignored
    04-09-21 comp/spawnveg.c: exec_errno_ptr is volatile -- duh
    04-09-14 tm/tmscan.c: add %| alternation and %& => tmdate()
    04-09-08 misc/optget.c: add :!value: omitted optional arg value
    	 misc/optget.c: fix --noNAME ambiguous option logic
    04-08-26 string/strperm.c: add who^mode to propagate least restrictive up
    	 astmath.c: add { frexpl ldexpl } checks for ast.req
    	 port/astlicense.c: ignore first option if non-assignment
    	 include/ast_dir.h: move d_fileno map before struct defs -- duh
    04-08-24 vmalloc/vmbest.c: add {VM_region} VMCHECK=+r for region segment checks
    	 misc/recfmt.c,include/recfmt.h: add
    04-08-23 vmalloc/vmbest.c: add {VM_primary VM_secondary} VMCHECK=-s for primary
    	 features/common: punt to <stdarg.h> for unknown va_list
    04-08-11 vmalloc: sync _UWIN libposix hooks
    04-07-27 features/common,features/limits.c: ULL suffix for unsigned _ast_int8_t
    04-07-22 include/ast.h,comp/eaccess.c: add eaccess() for effective access()
    04-07-19 comp/open.c,sfio/_sfopen.c: { O_RDONLY O_WRONLY O_RDWR } are values
    04-06-28 misc/error.c: check level after error_info.auxilliary
    04-06-24 string/strmatch.c: strgrpmatch() match[] now variable size array
    04-06-17 features/common: change _DLL null define to (the standard ast) 1
    04-06-11 misc/optget.c: allow optional [-|+|--|++] optstr() option prefix
    	 misc/optget.c: reset optstr() state on 0 return
    	 misc/optget.c: text()=>textout() linux.ppc symbol hijack workaround
    04-05-31 sfio/sfreserve.c: no side buffer if user buffer is large enough
    04-05-27 string/fmtbuf.c: handle one concurrent buf > sizeof(buf)
    04-05-24 regcomp.c: fix no-advance initialization
    04-05-05 conf.tab,conf.sh: update to align with standards
    	 magic.tab: ms suffix update
    04-05-04 port/lcgen.c: fix territory initialization
    04-04-15 tm/tmdate.c,include/tm.h: fix specific and ordinal days
    04-04-08 astconf: retain { HOSTTYPE LIBPATH LIBPREFIX LIBSUFFIX } strict vals
    04-04-07 vmalloc/vmbest.c: fix alpha tiny block bug
    	 vmalloc/malloc.c: re-enable on alpha
    04-03-30 tm/tminit.c: GMT => UCT only if tz.daylight not defined
    04-03-25 vmalloc/malloc.c: _AST_std_malloc=1 for __alpha
    	 path/pathprobe.c: per-user probe dir => $HOME/.probe/$HOSTTYPE
    04-03-23 regex/reglib.h: fix isw*() redefines
    04-03-17 features/stdio: no __FILE override for __CYGWIN_ (sys/reent.h clash)
    	 sfio/sfhdr.h,sfio/sfsetbuf.c: lower sfmove() default buf size 4x
    04-02-29 comp/omitted.c: move env trace after PATH fixup
    	 comp/omitted.c: cygwin spawn _P_DETACH => _P_NOWAIT+setpgid(pid,0)
    	 misc/optget.c: fix html mailto: match
    	 port/astlicense.c: add type=test for fixed 2001 date
    	 features/float: check local NaNQ first
    	 vmalloc/vmhdr.h: fix _vmextern_ vm_truncate return type
    	 misc/magic.tab: add elf s390 index=22
    04-02-26 vmalloc: VMCHECK a:assertions c:arena-check w:warn-instead-of-abort
    	 sfio/sfvscanf.c: fix extf arg selection
    04-02-24 features/dirent: set nodefine to avoid ast_std.h _typ_off64_t undef
    	 disc/sfkeyprintf.c: only case pattern must be ()[] balanced
    04-02-14 include/sfio_t.h: add SF_DCDOWN, SFDCNEXT(), SFDCPREV()
    04-02-13 string/strmatch.c: fix bug that didn't save one-time sub[] size
    	 vmalloc: -g: export VMCHECK=1 enable malloc/free checks
    	 vmalloc: -g: free(0) to check and disable malloc/free checks
    	 vmalloc: -g: free(1) to check and enable malloc/free checks
    04-02-11 Makefile: add :P=A: to conf and lcgen exec for cross-compile
    	 regex: use MBSIZE() instead of mbsize() to grab 1 char on err
    	 vmalloc/vmbest.c: updated to do more comprehensive DEBUG tests
    04-02-04 sfio/sfraise.c: add sfraise(0,a,b) to iterate over all streams
    04-02-01 vmalloc/vmbest.c: _BLD_DEBUG free(0) checks the arena
    04-01-31 features/vmalloc: fix typo that missed _mmap_zero
    04-01-23 string/strerror.c: handle real strerror() return value overwrite
    04-01-11 path/pathpath.c: fix size vs. sizeof(buf) typo
    03-12-22 misc/magic.tab: dos EXE tweaks
    03-12-05 vmalloc: sync with kpv, adding exceptf announcements
    03-12-04 port/astlicense.c: fix expand() loop sentinel bug
    03-12-02 include/ast.h: mbchar() advances by 1 on mbtowc() error
    	 misc/fts.c: increase MINNAME to 32
    03-11-21 vmalloc/vmbest.c: export VMCHECK=1 to enable $(CC.DEBUG) vmcheck()
             vmalloc/vmbest.c: export VMCHECK=2 to disable KPVCOMPACT
    	 misc/magic.c: add { cobol copybook pl1 } and suffix preference
    03-11-12 features/stdio: drop cuserid,getopt for SUSV3
    03-11-11 vmalloc/*: merge kpv update -- this should stomp the compaction bug
    03-10-23 comp/iconv.c: fix sfreserve lock fallback
    03-10-20 sfio/_sfopen.c: add to allow user sfopen() intercept
    03-10-17 regnexec.c: fix exec time REG_LEFT, \x.... => wctomb()
    03-10-12 string/strtoi.h: fix strton '.' overconsumption
    03-10-12 comp/iconv.c: identity is always (iconv_t)0
    03-10-09 string/fmtesc.c: fix FMT_SHELL to check for all shell magic chars
    03-10-01 port/astlicense.c: unknown authors copied verbatim (instead of ignored)
    03-09-30 string/chresc.c: handle \u..., \x... consumes all trailing hex digits
    	 string/stresc.c: \u... and \x... > UCHAR_MAX => wctomb()
    03-09-29 fnv.h: add
    03-09-23 modedata.c: table is for external modes, so no arch specific hacks
    	 optget.c: fix option prefix match translation bug
    	 optget.c: add `<length> <name>=<value> to optstr()
    	 features/lib: add memcmp() test for sgi optimzation bug
    03-09-22 regex.h,regcomp.c: add regncomp()
    	 regclass.c: fix for loop dangling ; in regaddclass()
    03-09-20 sftable.c,sfvprintf.c: fix SFFMT_CHAR handling to match extf api
    03-09-19 sfmode.c: update release to kpv's
    03-09-17 regcomp.c: add pedantic backref error checks
    03-09-16 regnexec.c: exec time REG_LEFT => don't advance past initial position
    	 regclass.c: add regaddclass() for user defined [:class:]
    	 regexec.h: REG_VERSION_N2X, add redisc_t {re_map} ccode map
    	 regstat.c: add regstat_t
    03-09-11 optget.c: --n:=v sets opt_info.assign=':', opt_info.number enabled
    03-09-09 disc/sfkeyprintf.c: *pn on lookup is arg separator; lookup "" arg too
    03-09-05 optget.c: [f:l*?] preserves user long name past '*' in opt_info.name[]
    03-09-03 sfstr.h: add sfstrpend() for #pending bytes in read buffer
    03-08-25 regex: add REG_FIRST, optimize bm
    	 features/lib: _AST_no_spawnveg==1 falls back to fork/exec
    03-08-22 features/stdio,stdio/asprintf.c,stdio/vasprintf.c: add
    03-08-21 path/pathnative.c,path/pathposix.c: interix updates
    	 features/botched: add cygwin _stat => _stat64
    03-08-15 include/ast.h: map out bsd strmode()
    	 features/common: add interix _ast_intmax_t workarounds
    	 misc/fs3d.c: 3d mount test now uses "" instead of NiL (or cygwin dumps)
    03-08-11 string/fmtesc.c: fix optional quoting checks
    	 tm/tmdate.c: fix > 1 year of seconds arithmetic
    	 tm/tmfix.c: fix leap year adjustments
    03-08-01 features/lib: beef up sock_peek test for interix
    03-07-29 features/float: add -lm to frexp... test
    	 Makefile: fix -lm astmath test sense
    03-07-26 features/mem.c: favor _mem_sbrk over _mem_mmap_*
    03-07-22 vmalloc/vmbest.c: fall back to sbrk() if mmap() fails
    	 features/mem.c: _mem_sbrk means sbrk() and brk() work
    03-07-17 regex/regcomp.c: fix bug that treated KRE X{n,m} like {n,m}(X)
    	 misc/magic.c: check MAGIC_VERBOSE for all load() messages
    03-07-14 misc/optget.c: handle [...]{[...]<.>..<.>..}
    03-06-21 misc/sigcrit.c: block SIGCHLD if _lib_sigprocmask || _lib_sigsetmask
    	 comp/spawnveg.c,sfio/sfmode.c: use sigcritical() SIG_REG_* macros
    	 comp/spawnveg.c: drop ENOEXEC logic
    	 vmalloc/*: snarf kpv KPVCOMPACT() fix
    	 vmalloc/vmbest.c: export VMCHECK=2 to disable KPVCOMPACT (just in case)
    	 string/strdup.c: drop __strdup() etc. intercepts -- malloc gets it
    	 features/mem: define _mem_method and _mem_* possible values
    	 vmalloc/malloc.c: _AST_mem_method==_mem_* to force mem get method
    	 sfio/sfputr.c: __ia64 memccpy is bogus -- how many tries do they get?
    	 path/pathshell.c: verify abs path and access(path,X_OK) -- duh
    	 vmalloc/vmhdr.h: add private _Vmessage() for non-sfio ASSERT()
    	 port/astconf.c: fix bug that always returned the minmax value
    03-06-11 comp/*.c: reorder macro hding for mvs.390 and <ast_map.h>
    	 features/vmalloc: add _lib_brk and _lib_sbrk verification
    	 include/ast_std.h,etc.: add _map_malloc for malloc => _ast_malloc
    	 comp/conf.sh: fix SI_* and *_SI_* macro redefs
    	 ast.h: VMDEBUG or _BLD_DEBUG enable <vmalloc.h> and VMFL tracing
    	 vmalloc/vmtrace.c: _PACKAGE_ast __FUNCTION__ is a string
    	 vmalloc/vmtrace.c: set trace file fd FD_CLOEXEC
    	 vmalloc/vmbest.c: set /dev/zero mmap fd FD_CLOEXEC
    	 features/mmap: fix ancient read() vs. mmap() time arithmetic typo
    	 vmalloc/malloc.c: _AST_std_malloc==1 to force standard malloc
    03-06-09 comp/omitted.c: add _imp__FUNCTION sybols for __CYGWIN__ static link
    	 vmalloc/vmbest.c: handle systems with sbrk() but no brk()
    03-06-04 port/astconf.c: drop non-standard diagnostics
    03-06-03 comp/conf.sh: rework symbol collision logic
    03-05-30 conf.tab,conf.sh,astconf.c: add <sys/systeminfo.h> sysinfo() SI_*
    03-05-29 ccode.h: rework for extensibility, drop obsolete mematoe(), memetoa()
    03-05-28 regex/*: recode to use isw*() directly when needed, is*() otherwise
    03-05-27 features/vmalloc: fix _std_malloc test
    03-05-25 misc/optget.c: fix optstr() ???* internal options
    03-05-24 misc/optget.c: fix (ancient) argv null dereference
    03-05-23 comp/getcwd.c: don't intercept on _WINIX -- unreliable st_ino
    03-05-22 sfio/sfsprintf.c: n<0 => don't append ' '
    03-05-18 misc/fts.c: re-stat FTS_DP to update nlink/times
    	 misc/fts.c: add FTSENT.stack to eliminate getlist() recursion
    	 regex/ucs_names.h: use "..." catenation to placate some cc's
    03-05-11 string/strtoi.h: handle "-" "+" "0x" "11#"
    03-05-09 vmalloc/vmbest.c: large memory allocation tweaks
    03-05-06 misc/optget.c: fix getopt_long() prefix==1 bug that missed short flags
    03-04-27 comp/system.c: handle <ast_map.h>
    03-04-24 vmalloc/vmmopen.c: drop dup <unistd.h>
    03-04-21 tm/tmdate.c: fix next hour/min logic
    03-04-15 vmalloc/malloc.c: intercept __malloc() along with __libc_malloc()
    	 string/strdup.c: intercept __strdup() along with __libc_strdup()
    	 features/mmap: consolidate from features/(lib|sfio|vmalloc)
    	 add _NO_MMAP==1 to disable all mmap()/munmap() calls
    	 path/pathposix.c: add
    03-04-14 comp/setlocale.c: fix debug_mbtowc() return value for *s==0 || n < 1
    	 comp/iconv.c: fix error return errno values
    03-04-11 misc/stk.c: fix stkgrow() realloc bug
    03-04-05 string/tok.c: support readonly single token input strings
    	 disc/sfdcdio.c: fix F_DIOINFO and FDIRECT #ifdef's
    	 include/ast_std.h: allow _LARGEFILE64_SOURCE on __hppa
    	 features/common: fix `tst _foo_' => `tst foo_' typo
    	 features/float: fix `tst _foo_' => `tst foo_' typo
    	 features/float: add FLTMAX_(UINTMAX_MAX,INTMAX_MAX,INTMAX_MIN)
    	 comp/omitted.c: fix pathconf => _pathconf => _ast_pathconf loop
    03-04-03 features/float: add _ast_no_um2fm: no usinged intmax => floatmax cast
    	 vmalloc/vmbest.c: add getenv("VMCHECK") to initialize Vmcheck
    03-03-28 include/ast_dir.h: add D_TYPE; { D_FILENO D_TYPE } must be #ifdef'd
    	 misc/fts.c|getcwd.c|glob.c,preroot/getpreroot.c: add D_FILENO #ifdef's
    	 Makefile: make sure _BLD_ast is defined for all compiles
    03-03-27 ast_vfork.h: generate from features/vfork to pick up headers/pragmas
    03-03-25 comp/omitted.c: drop free() of live environ
    	 path/pathshell.c: allow trailing .exe -- pox on that
    	 string/strtoi.h: fix bug leading 3 digits before thousands sep bug
    	 string/(fmt|str)[gu]id.c: we know root when we see it
    03-03-24 misc/optget.c: handle : and ? in := default value
    03-03-21 ast_std.h: drop all spawn*() but spawnveg()
    	 obsolete/spawn.c: add for dropped spawn*()
    	 features/lib: _use_spawnveg if spawnveg() is a win over fork()/exec()
    	 features/lib: drop NutForkExecve() and _map_spawnve
    	 features/lib: fix memccpy test to clean up /tmp droppings
    	 comp/spawnveg.c: call posix_spawn() if implemented
    	 comp/omitted.c: add spawnve() intercept
    	 comp/getoptl.c: set getopt_long() optind even if no options
    	 tm/tmfmt.c: add %Q<delim>recent<delim>distant<delim>
    	 misc/optget.c: fix trailing '*' for option and option args
    	 sfio/sfmode.c: getenv("_AST_SFIO_OPTIONS") [,]SF_LINE[,] for fd {0,1,2}
    	 vmalloc/*: kpv sync for uwin build independent of libast
    03-03-18 port/astconf.c: switch to dynamic string values (saves 7K data/bss)
    	 string/strmatch.c: switch to dynamic regex cache (saves 3K data/bss)
    	 regex/regcoll.c,ucs_names.h: initialize rw tables from smaller ro data
    	 features/lib: add vfork test for passing SIG_IGN across exec
    	 features/lib: add spawn test for passing SIG_IGN across spawn
    03-03-17 comp/omitted.c: unlink() renames to .deleted dir in case file open
    	 sfio/sfpopen.c: handle mode "" for spawn with no pipe
    	 features/float,comp/frexp.c,comp/frexpl.c: add pow2() table alternative
    03-03-12 features/lib: fix linux.ia64 memccpy() tests -- now its their turn
    	 features/vmalloc: fix /dev/zero test
    	 features/align: _ast_intmax_t and _ast_fltmax_t join the union
    	 misc/stk.c: fix struct frame size to align data
    	 disc/sfdcdos.c: change sfslen() => sfvalue(f)
    03-03-10 misc/optget.c: handle [f<:>x:lll<?>ddd]
    03-03-07 port/astconf.c: uninitialized CONFORMANCE + POSIXLY_CORRECT => standard
    03-03-05 comp/omitted.c: make sure at least /bin is in PATH to find cygwin dlls
    03-03-02 path/pathshell.c: write access to /bin is effectively root
    03-02-28 features/float: add (FLT|DBL|LDBL)_U?(LONG|LONGLONG|INTMAX)_(MIN|MAX)
    03-02-25 features/lib: change vfork() test to use _exit() instead of exit()
    03-02-23 include/error.h: update ERROR_VERSION for error_info.number space
    03-02-22 comp/conf.sh: wrap ksh check in eval to avoid premature exit
    03-02-21 misc/fts.c: verify chdir(..) to avoid malicious dir rename()
    03-02-19 string/strtoip4.c: isspace() instead of ' '||'\t'
    03-02-17 regex/regcomp.c: fix stats.l REX_REP logic that botched REX_BM
    03-02-13 string/base64.c: handle catenated encodings
    03-02-11 features/libpath.sh: change LIBPATH to <dir>[:<env>[:<pat>]][,...]
    03-02-07 path/pathfind.c: allow "/dev/null" to be PATH_REGULAR
    03-02-06 include/ast.h,fmtquote.c: add FMT_ALWAYS|FMT_ESCAPED|FMT_SHELL|FMT_WIDE
    03-02-05 tm/tmdate.c,tm/tmword.c,string/strelapsed.c: '_' treated like ' '
    03-02-01 string/strelapsed.c: handle ps style [day-][hour:]min:sec
    03-01-31 port/astlicense.c: fix author=* match
    03-01-30 include/tm.h: add tmisleapyear() macro
    03-01-29 comp/getopt.h,comp/getoptl.c: add gnu getopt_long(), getopt_long_only()
    	 include/ast_getopt.h: for non-gnu part of comp/getopt.h
    	 include/ast_std.h: include <ast_getopt.h> instead of <getopt.h>
    03-01-28 ast.h,string/base64.c: add base64encode() and base64decode()
    	 path/pathfind.c: verify S_ISREG()
    03-01-24 path/pathexists.c: fix abs dir bug and deal with case ignorance
    03-01-23 path/pathpath.c: honor PATH_ABSOLUTE for the easy case too
    03-01-22 path/pathprobe.c: fix search to find both the probe script and command
    03-01-17 misc/magic.tab: application/zip => appplication/(gzip|pzip|zip)
    03-01-14 misc/optget.c: change href="" to href="."
    03-01-10 include/ast_std.h: strtold() import hackery for static __CYGWIN__
    03-01-03 include/regex.h,regex/regcomp.h: add REG_SHELL_GROUP
    	 include/ast.h,string/strmatch.c: add STR_GROUP for REG_SHELL_GROUP
    02-12-15 include/error.h: errorcontext => Error_context_s (compatible til 2004)
    02-12-06 misc/sigdata.c: add NoF(sigdadata) -- why nmake was uninterruptable!
    02-12-03 comp/omitted.c,features/omitted: handle cygwin alarm() return botch
    02-11-27 misc/swapop.c: op=3,size=4 => op=7
    	 string/strlcat.c,strlcpy.c: fix uwin decl clash
    02-11-26 sfio/sfvprintf.c: fix sfsprintf() ' ' termination bug
    02-11-22 misc/glob.c: move static struniq() to libast extern
    	 string/fmtversion.c,include/ast.h: add fmtversion
    02-11-18 string/strncopy.c: add
    	 misc/magic.tab: list size for magicid.h magic
    02-11-14 sfio/sfvprintf.c: add %#c for C escapes
    	 include/error.h: add ERROR_NOTIFY context flag for builtin commands
    02-11-11 string/strtoi.h: add S2I_size for strnto*() size_t 2nd arg
    	 sfio/sfstrtof.h: add S2I_size for strnto*() size_t 2nd arg
    	 comp/putenv.c: add setenv() and unsetenv() wrappers for setenviron()
    02-10-31 path/pathfind.c: add dir of including file to the pathinclude() list
    	 misc/optesc.c: add
    02-10-30 string/strtoip4.c: set next char pointer even on error
    02-10-29 comp/resolvepath.c: add (size_t version of realpath())
    	 misc/mime.c: fix mimehead() to ignore null content values
    02-10-28 misc/glob.c: add GLOB_STARSTAR for /**/ and GLOB_NOTDIR optimization
    02-10-27 string/struniq.c: add
    02-10-23 features/common: fix off-by-one loop check
    02-10-18 include/ast_std.h: avoid off_t,ftruncate,lseek,truncate redefinitions
    02-10-17 misc/mime.c: handle type/* match, fix bogus header parse
    02-10-04 sfio/sfstrtof.h: S2F_static <0:export =0:private >0:static
    02-10-02 features/common: don't define _WIN32; define _WINIX => unix on windows
    	 features/tty: finally stomp the bsd _POSIX_VDISABLE redefinition
    	 misc/fastfind.c: add more specific findwrite() error messages
    	 comp/omitted.c: fix cygwin utime() to update st_ctime
    	 comp/strtol.c,strtoul.c: __CYGWIN__ static link workaround XXX
    	 string/fmtls.c,fmttime.c: tmform() => tmfmt()
    02-09-22 port/astconf.c: return values in fmtbuf() buffer instead of stack
    	 port/mnt.c: don't set MNT_REMOTE for win32 ?:paths
    	 sfio/sfvscanf.c: _sfdscan() is library global (not static)
    02-09-21 path/pathkey.c: add tool arg for mamake compatible hash
    	 features/fcntl.c: handle iffe _hdr_lcl_* => _lcl_* change
    02-09-15 comp/conf.sh: fix enum vs. macro test
    	 cdt: kpv sync
    02-09-11 ast.h,features/common: move _WIN32 macro init to features/common
    	 features/common: enable __EXTERN__ and __DEFINE__ for _WIN32&!_UWIN
    	 features/float: add -lm to _ast_*_nan_init tests
    	 vmalloc: kpv sync with vmresizef => vmgetmem
    	 features/iconv: must have both <iconv.h> and iconv_open()!
    	 features/vmalloc: alloca test must compile *and* link
    	 sfio/sfvscanf.c,sfstrtof.h: add flag arg to char get, fix NaN loop
    02-09-10 vmalloc/vmhdr.h: enable getpagesize() and sbrk() prototypes
    	 features/fcntl.c: enable mmap64() prototype
    	 include/ast_windows.h: windows.h wrapper with ast namespace workarounds
    02-09-07 misc/mime.c: fix quoted value parse bug that ate the whole line
    02-09-05 features/vmalloc: add free() to _std_malloc test
    	 include/ast.h: NoF(x) now defines _DATA_x for !_BLD_DLL too
    	 tm/tmlocale.c: { C POSIX en } == unix dadgummit
    02-08-29 path/pathfind.c: initialize Dir_t.next=0
    02-08-28 uwin/rint.c: update
    	 features/libpath.sh: "bin" is now the default value
    02-08-22 vmtrace.h: add for debugging
    02-08-20 misc/magic.c: convert to use <cdt.h>
    	 vmalloc/vmresizef.c: add for generic discipline resizef default
    	 string/strelapsed.c: allow long time component names
    02-08-19 misc/optget.c: add `.fp 5 CW' to --nroff output
    	 string/(fmtfs|fmtuid|fmtgid|strgid|struid).c: convert to use <cdt.h>
    	 include/dt.h,cdt/dtnew.c: add for dtopen() in specific vm region
    02-08-13 comp/omitted.c: fix bzero logic for e.g. unixware.i386
    	 include/ast.h: add fmtbase->fmtbasell; swap in 2003-09-01
    02-08-12 regex/regnexec.c: fix REG_MINIMAL REX_DOT mb bug
    02-08-08 features/iconv: <ast_common.h> instead of <sys/types.h> <ast_common.h>
    02-08-07 regex/regcomp.c: recognize anchors in BRE subexpressions
    02-08-06 comp/iconv.c: handle win32 cpNNNN == windows-NNNN aliases
    02-08-05 cdt/*: sync with kpv src
    02-08-02 features/iconv: include sys/types.h for ast_types.h
    02-08-01 misc/magic.c: magic file "." names the default
    	 misc/magic.c: handle addr type (from irix string)
    	 features/lib: move malloc tests to features/vmalloc
    	 features/vmalloc: snarf tests from features/lib
    	 vmalloc/*: sync with kpv src
    	 comp/libc.c: dropped -- __libc_* intercepts moved to vmalloc/malloc.c
    02-07-30 features/lib: handle __libc_malloc() in _std_malloc test
    	 vmalloc/malloc.c: add gnu pvalloc()
    	 features/vmalloc: fix alloca check
    02-07-29 features/limits.c: handle netbsd guards
    02-07-27 sfio/sfpoll.c: handle rw pipes
    02-07-25 features/iconv: include ast_types.h for size_t in ast_iconv.h
    02-07-18 apply LARGEFILE64 header prototype clash patches
    	 misc/optget.c: __EXTERN__ _opt_info_ instead of opt_info
    02-07-17 ast_std.h: memzero() now defaults to memset() instead of bzero()
    02-07-16 ast_std.h: add ast.env_serial
    	 misc/setenviron.c: increment ast.env_serial
    	 include/tm.h: tmset() now calls tminit() directly
    	 tm/tminit.c: check ast.env_serial for env change
    	 tm/tmfix.c: speed up for large values of tm_mday
    02-07-15 comp/fnmatch.c: fix memory leak caused by missing regfree()
    	 comp/strstr.c: fix broken interpretation and implementation
    	 comp/iconv.c: intercept (but no-op) null to and from buffer pointers
    02-06-27 ast_std.h: map _sysconf => _ast_sysconf for sun
    02-06-26 cdt,sfio,vmalloc: kpv sync -- is this ever easy?
    02-06-24 sfio: kpv sync, vfwscanf(),fputw() fix (wcslen(x)*sizeof(wchar_t)!!)
    	 misc/fts.c: fix symlink chdir() optimzation bug
    02-06-11 sfio/sfwrite.c: string to file fix
    	 Makefile: __OBSOLETE__==20020101
    02-06-01 regex/regcomp.c: REG_DELIMITED now consumes the delimiter
    02-05-31 regex/reglib.h,regcomp.c,regnexec.c: null subexpression fixes
    02-05-24 misc/fts.c: disable dir link counts in 3d
    	 misc/magic.c: fix "*(mkfile)" sh pattern to "*@(mkfile)"
    02-05-20 regex.h,regex/regsubcomp.c,regex/regsubexec.c: add
    	 regex/regsub.c: deprecate
    02-05-16 tm/tmfix.c: fix '60+n min/sec ago' bug for n min/sec after the hour
    02-05-14 regex/regsub.c: fix (^|x) null match early termination bug
    02-05-13 dir/dirlib.h: drop errant extern==__EXPORT__
    	 features/uwin: add uwin lib tests
    	 uwin/*.c: check features/uwin for stubs
    	 features/float: add nan representation generation
    	 sfio/sftable.h: used _ast_*_nan_init for huge values
    02-05-09 misc/fts.c: fix virtual top to force ``child'' stat()
    	 features/common: define va_copy() only if not in <stdarg.h>
    02-05-01 string/strtoip4.c: cisco inverted quad mask must have 4 parts
    02-04-30 misc/magic.tab: fix pzip version check
    02-04-19 string/strtoip4.c: handle cisco inverted quad mask n.n.n.n/i.i.i.i
    02-04-18 misc/fts.c: add chdir() verification stat() optimizations
    	 path/pathkey.c: check PROBE_ATTRIBUTES for list of vars
    02-04-12 port/astlicense.c: type=open tweak, fix author list spacing
    02-04-11 regex/regcomp.c: check for pattern number overflow
    02-04-05 tm/tmfmt.c: add %u
    02-04-04 sfkeyprintf.c: fix %c numeric value
    	 path/pathpath.c: check plain path first -- duh
    02-04-03 misc/fts.c: fix (FTS_PHYSICAL|FTS_NOSTAT) stat optimizations
    	 ftwalk.c: only clear FTW_DELAY if FTW_CHILDREN
    	 ftwalk.h: add FTW_NSOK for FTW_DELAY
    02-03-29 ast.h: drop strerror() prototype -- already in <ast_std.h>
    	 features/stdio: check for _SFIO_H redundant _Sfstd* declarations
    02-03-26 misc/glob.c: fix GLOB_LIST gl_flags values
    02-03-24 port/mnt.c: update bsd fstype name and mount option logic
    02-03-23 Makefile: add ast_wchar.h to the .check.hdr list (for mamake)
    02-03-17 features/stdio: hack around g++ 3.* clashes
    	 Makefile: add ast_nl_types.h to the .check.hdr list (for mamake)
    	 string/strtoip4.c: fix validity check bug that only checked last part
    02-03-14 misc/optget.c: fix --keys to not expand inline <.>..\f
    02-03-12 port/astlicense.c: add type=free
    	 path/pathaccess.c: sibling ".." search ignores relative dirs
    	 sfio/sfvscanf.c: sfstrtof get() must return 0 on eof
    02-03-11 path/pathexists.c: check path by pairs checking {ENOTDIR,ENOENT}
    02-02-14 features/float: copy local min/max macros to avoid printf roundoff
    	 features/wchar: include <ast_common.h>, not <ast_std.h>
    	 misc/magic.c: match[]=>matches[] to fix K&R match() macro conflict
    	 include/vmalloc.h: include <stdlib.h> for !_PACKAGE_ast
    	 uwin/mini.sym: add sprintf (now required by features/common)
    	 regex/regnexec.c: truncate wide chars for <ctype.h> functions
    	 Makefile: fix MAM ast_common.h sequencing bug by making it first
    	 cdt/dthash.c: fix DT_DELETE memory leak (DT_DETACH typo)
    	 cdt/dthash.c: fix DT_DELETE double free (dt->data->here typo)
    	 regex/regcomp.c: fix recomb() to reject RE with backref
    	 features/iffeio: explicitly generate stdio.lcl
    	 stdio: add {fcloseall,f(get|put)s_unlocked,fmemopen,getdelim,getline}
    	 tmmake,tmtime: allow negative time_t if native localtime/gmtime do
    	 tmdate: allow years before 1969
    	 fmtfmt: add
    	 include/ast.h: add { PATH_TOUCH_CREATE PATH_TOUCH_VERBATIM }
    	 Makefile: add std/*.h for std header iffe overrides
    	 comp/iconv.c: fix non-C win32 sfreserve() loop
    02-02-11 features/common: separate long long / long double tests
    	 features/common: verify printf handles long long / long double
    02-02-02 include/ast_std.h,sfio/sfhdr.h: drop _hdr_locale tests -- always on now
    	 include/ast_std.h: trust _UWIN <unistd.h>
    02-01-31 port/mnt.c: add aix options field
    02-01-30 comp/strstr.c: add for ancient s5
    	 stdio/_flsbuf.c: only on systems that transfer to native (e.g., uwin)
    	 string/strtoi.h: cat min/max error return values
    02-01-28 features/tty: add cf[gs]et[io]speed macros for <termio.h>
    	 comp/rename.c: punt to (ancient) /usr/lib/mv_dir on EISDIR
    02-01-24 sigcrit.c: fix SIGCLD!=SIGCHLD interrupt loop
    	 sfvprintf.c: convert fast io macros to functions for uts.390 cc
    	 string/strtoi.h: drop #pragma prototyped for standalone sfio
    	 sfdcsubstr.c: rename from sfdcsubstream.c for 14 char fs
    02-01-22 execlp,execvp,execvpe,spawnlp,spawnvp,spawnvpe: fix __EXPORT__
    	 spawnlp,spawnve,spawnvp,spawnvpe: handle ms mode arg -- barf
    	 sftable.c: ifdef hacks for _WIN32&_ALPHA_ fp exception
    	 _stdfun.c: add _UWIN&_ALPHA_ iob map
    02-01-18 sfio/sfstrtof.h: drop #pragma prototyped for standalone sfio
    02-01-17 features/hdr: don't include <stddef.h> after it doesn't check out!
    02-01-16 misc/magic.c: add version type for YYYYMMDD or [a.][b.]c.d
    	 misc/magic.c: recode mime %s parse -- sensible and no buffer overflow
    02-01-15 misc/magic.tab,magicid.h: add generic binary magic number and header
    02-01-12 tm/tmlocale.c: override win32 default date for {C,POSIX,en} locales
    	 comp/omitted.c: fix cygwin workaround logic bugs
    02-01-09 stdio/fseeko.c,ftello.c: add from UNIX98
    02-01-08 comp/conf.sh: use $cc instead of cc
    02-01-07 string/strlcat.c,string/strlcpy.c: add bsd api
    01-12-18 comp/conf.tab: fix LFS_CFLAGS default for sun _CS_LFS_CFLAGS botch
    	 features/common: add hdr stdarg test
    	 tm/tmdate.c: handle YYYY/MM/DD
    01-12-10 misc/magic.tab: add generic 0x00010203 binary magic
    01-12-03 path/pathprobe.c: return HOME relative path if readonly/non-suid fs
    01-11-30 misc/optget.c: add simple cache for repeat offenders (like ksh read)
    	 sfio/sfhdr.h: preserve errno across SFMMSEQON-SFMMSEQOFF
    01-11-29 magic.tab: fix GIF version number listing
    01-11-28 string/fmtbase.c: p!=0 => base always included in output
    01-11-26 misc/fts.c: empty path is an error
    01-11-14 misc/optget.c: fix --?+SECTION queries to include paragraphs
    01-11-20 regex/regnexec.c: fix REG_MINIMAL character class match bug
    01-11-19 features/lib: retain _lib_confstr for all solaris releases
    01-11-16 comp/setlocale.c: fix !_lib_setlocale typo
    01-10-31 regex/ucs_names.h: add string catenation to keep line length low
    	 misc/fastfind.c: handle gnu slocate db read
    	 misc/optget.c: add --?+SECTION queries
    	 comp/fnmatch.h: add FNM_NOSYS
    01-10-30 tm/tmdate.c: fix cron specs when both wday and mday are specified
    01-10-20 misc/glob.c: fix bug that called  trim() twice on same path
    	 misc/glob.c: fix  trim() bug that restored / to wrong position
    	 string/fmtre.c: fix { ^ . $ } translations
    	 misc/optget.c: use original string if translation fails -- duh
    	 sfio/sfhdr.h: assume <errno.h> assigns proper atttibutes to errno
    	 comp/regcmp.c: __ia64 workaround fixed by proper CC.DLL probe
    	 comp/getdate.c: __ia64 workaround fixed by proper CC.DLL probe
    	 features/lib: add lib getdate
    01-10-18 features/lib: check for strtod static link collision
    	 features/float: add another signed cast for old bsd cc
    	 features/wchar: add <stdlib.h> <stdio.h> before <wchar.h> for old bsd
    01-10-17 sfio/sfcvt.c: limit max precision to { FLT_DIG DBL_DIG LDBL_DIG }
    	 sfio/sfcvt.c: fix %[aA] format to always have leading 0[xX]1.
    	 sfio/sfvprintf.c: handle %C %lc %S %ls for wchar_t args
    	 sfio/sfvscanf.c: handle %C %lc %S %ls for wchar_t args
    	 string/fmtmode.c: fix bug that omitted trailing ' '
    01-10-12 misc/optget.c: . => . for --??nroff
    	 comp/wc.c: fix mbstate_t initialization typo
    	 features/float: fix max integer / float loop termiation
    	 features/float: fix LDBL_UINTMAX_MAX typo that did DBL_UINTMAX_MAX
    01-10-11 include/sfio.h: fix _Sfstd* import/export
    	 features/common: fix _UWIN __DYNAMIC__() definition
    01-10-06 features/fcntl.c: { O_BINARY O_TEXT } default to 0
    	 features/omitted: add for comp/omitted.c
    	 sfio/sfopen.c: O_BINARY default for _WIN32&&!_UWIN
    01-10-05 misc/glob.c: fix `\(x/*' GLOB_NOMATCH bug that returned `(x'
    	 misc/optget.c: fix localization lookup that didn't drop doubled : ? ]
    01-10-04 comp/setlocale.c: handle sizeof(wchar_t)!=4 in debug locale
    	 comp/conf.sh: handle sytems where _SC_* is both an enum and a macro
    01-09-25 astconf: add LIBPREFIX
    01-09-20 features/common: add __DYNAMIC__() for dll externs
    01-09-19 cdt: kpv update
    	 mb*() macros: update for ksh conversion, extend debug locale
    01-09-16 tm/tmlocale.c: add compiled in defaults for C locale
    	 misc/glob.c: add gl_nextdir callback for GLOB_COMPLETE
    01-08-14 clarify _WIN32 vs. _UWIN vs. __CYGWIN__
    	 tminit: fix standard & daylight initialization
    01-09-11 pathnative.c: add for native fs representation
    	 regex.h: fix regerror_t prototype
    01-09-04 regex/regnexec.c: fix REG_ICASE for multi-char collating elements
    	 tm/tmlocale.c: fix old ascii LC_TIME load
    	 locale*: add new LC_* categories
    	 comp/omitted.c: add CYGWIN workarounds
    	 features/lib: add CYGWIN workarounds
    01-08-11 features/common: some compilers have long long but no LL constants!
    	 features/lib: add mmap64 implementation test (for linux.s390)
    	 regex/regcomp.c: fix  in [...] parse
    	 setlocale: retain user locale spelling in setlocale() return value
    	 features/limits.c: don't include ./limits.h -- duh
    	 fmtesc: don't escape multibyte chars
    	 tm/tmlocale.c: fix native C locale default
    01-08-08 features/float: some compilers (msdev) forget long long vs. double
    01-07-31 misc/optget.c: handle suboptions
    01-07-27 cdt.h: add DTDISC()
    01-07-17 iffeio.h: move to include for stdio bootstrap iffe workarounds
    01-06-25 regex: perl extensions added and tested
    01-06-21 misc/error: add ERROR_OPTIONS=prefix=string for message processing
    01-06-15 string/chresc: only 2 hex digits max for \xxx
    	 regex/regsub: handle REG_SHELL ~(nnn) rhs backrefs
    01-06-11 regex: handle embedded   in pattern and subject string
    	 regex: add (?nnn) for backrefs > 9
    	 comp/fnmatch: add FNM_LEADING_DIR for gnu compatibility
    	 features/float: _ast_flt_unsigned_max_t for bsd.i386 omission
    01-06-06 misc/optget.c: add o option for old ps,ar,tar with optional leading -
    	 regex/regcomp.c: REG_LENIENT|REG_DELIMITED \<newline> => <newline>
    	 regex/regcomp.c: REG_LENIENT  00 => NUL
    01-06-04 features/dirent: replace Makefile hack with iffe semi-hack
    	 regex/regnexec.c: negation must also check REG_SHELL_DOT
    01-06-03 sprintf.c: change buf size from SF_BUFSIZE to INT_MAX
    01-05-31 glob: fix gl_fignore to ignore leading . by default
    	 features/lib: add botch_d_ino_dirent64 for linux botch
    01-05-25 port/lc.tab: add a few missing language_territory's
    01-05-23 string/chresc: \C[.collation-element.]
    	 fmtmatch,fmtre: update for <regex.h> syntax extensions
    01-05-21 regex: add perl extensions, unicode names for collation elements
    01-05-11 string/chresc: \ == \E == escape, <JOIN>X == control X, \x{..} == \x..
    01-05-09 path/pathtemp.c: pathtemp(0,0,0,"/private",0) for mode S_IRUSR|S_IWUSR
    	 port/touch.c: handle utime(2) EPERM to fix bug that truncated
    	 regex: change REG_MINIMAL to avoid negation -- much faster now
    01-05-08 *.h: add some off_t macro guards for suse linux
    01-05-03 regcomp.c: optimize ((x)!)* to ((x)!)
    	 wchar: add <wchar.h> and stdio wchar routines
    01-05-02 feaures/wchar: add <wchar.h> intercept, add stdio wchar functions
    01-05-01 string/strtoi.h: signed strtoi accepts qualified unsigned constants
    01-04-30 comp/setlocale.c: fix code that relied on 2 simultaneous getenv()'s
    	 tm/tmlocale.c: check for UTF-8 encoded LC_TIME files
    	 misc/magic.tab: add utf-8 and utf-16 U+FEFF magic
    01-04-26 features/common: some cc's have _ast_int8_t but not LL constants
    01-04-24 features/lib: add _std_strtod for mac os X
    01-04-23 ccode: add CC_sub for ms embedded EOF char on ebcdic -- no joke
    01-04-20 iconv: handle ebcdic<=>utf
    	 mc.h,mc.c: add mcindex()
    	 ast_std.h: add AST_MESSAGE_SET
    01-04-18 features/libpath.sh: fix mvs probe
    	 *: sundry mvs fixes
    	 glob: fix GLOB_NOCHECK to avoid stat() and properly trim patterns
    01-04-01 strtod,strtold: add
    	 strtol,strtoul,strtoll,strtoull,strton,strtonl: handle locale & ERANGE
    	 sfvprintf,sfvscanf: handle locale decimal_point,thousands_sep
    	 sfvprintf,sfvscanf: handle %a,%A
    	 setlocale: add LC_NUMERIC decimal_point,thousands_sep init
    	 ast_std.h: __OPTIMIZE_SIZE__==1 to disable non-std __GNUC__ inlines
    	 pathexists: path cache to cut down pathpath() access(2) calls
    	 features/stdio: __FILE_TAG == _sfio_s for solaris
    01-03-23 iconv: fix iconv_move buffer boundary bug that stopped at 1 block
    01-03-19 glob: add GLOB_AUGMENTED
    	 regex: REG_SHELL syntax error implies REG_LITERAL match
    	 strto[ln][ll]: add overflow checks
    01-03-17 locale: reimplemented to provide canonical locale namespace
    	 locale: add LC_ALL=local for local system user default
    	 tm.h: TM_*_3 => TM_*_ABBREV
    	 tmfmt: handle standard E and O format modifiers
    	 tmlocale: consult nl_langinfo() if defined
    	 fmtquote("
    01-03-08 regex: handle multibyte chars and collation classes
    	 strmatch,strgrpmatch: now a wrapper on regex
    	 ast_std.h: add mb*() multibyte and collation support
    	 sfvscanf: handle locale decimal and thousand
    	 proc*,system: handle ignored SIGCHLD
    	 sfkeyprintf: handle %*C
    01-03-06 locale: add locale data cache for efficient multiple locale switching
    	 optget: fix LC_MESSAGES!=C --man bug
    01-03-01 Makefile: HEADEROPT is not optional for win32.*
    	 comp/syslog.h: comply with the de factos
    	 optget(): fix <.>..< >stack bug that referenced data after pop
    01-02-27 *locale*: a batch of fixes for native LC_MESSAGE&LC_TIME hooks
    01-02-22 pathprobe: reprobe test now checks probe.ini too
    	 sfio_s.h: advertize public Sfio_t members with _ prefix
    	 sfio.h,features/stdio: add <sfio_s.h> reference
    	 sfhdr.h: map <sfio_s.h> _foo to foo
    	 sfio.h: SF_APPEND=>SF_APPENDWR, SF_CLOSE=>SF_CLOSING
    01-02-14 comp/conf.sh: probe <unistd.h> for _(CS|PC|SC)_* getconf symbols
    	 stdio/*: update for uwin stdio.dll binary compatibility
    	 sfread: finally fixed premature pipe read EOF bug
    	 fmtscale: format tenths for number > 0 && number < 10
    01-02-09 _sfmode(),_sftype(),_Sfextern: UWIN binary stdio compatibility exports
    01-02-08 sfgetm,sfputm,_sfputm: fix max clash with k&r max() macro
    	 setlocale: undef valid for sun4 k&r valid() macro
    01-02-07 catopen.c: don't do native catopen for the debug locale
    01-02-06 sfraise.c: add SF_FINAL check to avoid (posibly) freed disciplines
    01-01-01 features/common: fix uwin __DEFINE__
    	 sftable: initialize decimal and thousand
    	 magic.tab: add corel wordperfect document
    	 syslog: add LOG_LEVEL, add ' only if needed
    	 include/tm.h: #undef daylight for _WIN32
    	 sfio.h: add _SF_APPEND and _SF_CLOSE for native namespace incursion
    	 ast_std.h: add AST_LC_multibyte for MB_CUR_MAX>1
    	 setlocale: set AST_LC_multibyte
    	 strmatch: check AST_LC_multibyte
    	 features/limits.c: add _BITS_POSIX1_LIM_H guard for linux
    	 features/libpath.sh: fix for aix LIBPATH
    	 procopen,procclose: block SIGCHLD if PROC_FOREGROUND (e.g., system(3))
    	 optget.c: add enumerated option argument values
    	 optget.c: add <!--INTERNAL--> for private --html
    	 optget.c: fix memory leak that hit shell builtins hard
    	 sfio: drop sfread small chunk logic
    00-12-25 mnt.c: handle " and ' quoting for fstab
    	 sftmp.c: let pathtemp() open the fd O_EXCL
    00-12-15 conf.sh: add -v for verbose trace
    	 features/(limits|unistd).c: no FEATURE/types because of _POSIX_SOURCE
    	 features/time: add default for CLOCKS_PER_SEC
    	 features/lib: std_malloc now handles NeXT
    00-12-13 strton: recognize qualifier only if preceded by a digit
    	 features/lib: change return in vfork() test to exit() for linux sparc
    	 fmtquote: fix $'...' quote logic
    00-12-11 tmdate: fix cron format bug that mishandled months
    00-12-01 optget: handle $Id: ... $ in --?-version
    	 features/fcntl.c: fix _STDPP_ mmap munmap
    00-11-27 magic: drop dup sfclose() in load()
    	 optget: handle error_info.id==0
    00-11-22 features/stdio: add _FILEDEFED for sol9.sun4
    	 strton,stronll: handle [u|U][l|L][ll|LL] qualifiers
    00-10-31 tmdate: add TM_DATESTYLE and mmddHHMM[cc]yy
    	 astlicense.c: #include <hashkey.h> MAM workaround
    	 astlicense.c: check for non-empty CONTRIBUTORS
    00-10-26 features/stdio: add _FILE and __FILE for gnu
    	 misc/stk.c: fix stack pointer check off-by-one (dgk does it too!)
    00-10-23 syslog.h: sync with bsd values
    00-10-18 _STUB_* now functions instead of common symbols
    	 all extern data declared with definition to eliminate common symbols
    	 fastfind: add mac/bsd /var/db/locate.database
    00-10-17 features/lib: add apple osX (darwin.ppc) workarounds
    00-10-12 add: fmtbuf(), fmtclock(), fmtip4(), strtoip4()
    	 fmt*() now use fmtbuf() for tmp fmt buf allocation
    00-10-05 regex: add REG_DISCIPLINE and regdisc_t for alloc/error disc
    00-09-29 features/lib: pipe_rw==0 for sgi: boot rw == bin incompatibility
    00-09-21 astlicense: handle ' and
    00-09-20 sfwrite: fix write() error in sfprintf() loop
    00-08-11 hdr,vmhdr.h: check/hide { getpagesize sbrk } prototypes
    	 astlicense: add noncommercial
    00-07-31 fflush: don't seek on pipes
    	 sfresize: add
    	 setlocale: fix bad newof() call
    00-06-01 strmatch: initialize match.current.beg[0] to avoid dump at line 670
    	 sfio/stdio: a few more errno tweaks
    	 astquery: sfstdin/sfstderr by default
    00-05-26 sfmode: errno=EBADF for invalid stream use
    00-05-22 rewind: fix for xopen test
    00-05-18 mcfind: returns absolute path
    00-05-16 optget: --keys must catch <.>..< >too
    	 translate,mc: errno cleanup
    00-05-09 magic: add netbsd binary magic
    	 fts: PATH_RESOLVE!=logical => FTS_SEEDOTDIR
    	 ftwflags: call fts_flags()
    	 astconf: astconf(0,0,0) re-syncs with _AST_FEATURES
    00-05-08 optget: --usage & --keys for last -catalog group only
    00-05-02 iconv.c: add; use codes[] in ccmapid() and ccmapname(); "" for native
    00-05-01 pathtmp: copy env values (libshell or putenv may change)
    00-04-01 optget: drop bar from [-foo?bar] for --??keys
    	 sfvscanf: add %X -- duh
    	 features/common: fix va_listval() for power pc
    	 findopen: fix FIND_GENERATE codes file search
    	 magic: add ERROR_translate() and msgcat.key
    	 tmlocale: add for LC_TIME locale info
    	 tmlex: check tm_info.format and tm_data.format
    	 tmfix: fix for tm_wday special case (via nl_langinfo on LC_TIME fields)
    	 strftime: fix for nl_langinfo special case
    	 ast_std.h: provide LC_* defauls if not defined
    	 sfnew: check ${_AST_sfio_bufsize} -- don't tell kpv
    	 catopen,nl_types.h: add intercept to mc* routines
    	 magic.tab: add ast message catalog
    	 strerror: add _ast_strerror intercept with ERROR_translate("errno")
    	 fmtquote: escapes >0177 only if (flags&2)
    00-03-17 feof: stdio macro functions only for _UWIN
    	 optget: proper ERROR_translate() calls
    	 astgetconf: add for thread safe error message control
    	 astlicense: fix type=special but with non-null notice
    	 errorx: add for ERROR_translate() support
    	 ERROR_translate: add locale id args for alternate dictionary
    	 option.h: move _OPT_PRIVATE_ to pointer to avoid dll size mismatch
    	 ftwalk: fix FTW_CHILDREN bug that hit top level non-dirs twice
    	 translate.c: default error_info.translate
    	 astconf: fix dup loop thrash that never returns, add _AST_VERSION
    00-03-10 ast_std.h: do _LARGEFILE_SOURCE initialization before std headers
    	 fmtquote: handle $'...' quotes
    00-03-07 optget: fix numeric option support test
    	 sfkeyprintf: add %q for '...' quoting with ansi escapes
    00-03-06 features/stdio: fix _sfflsbuf prototype (dingold@gte.net)
    00-02-14 pathtmp: fix pid cache bug that sometimes repeated after ~10 attempts
    	 optget: "..." attribute quote
    	 pathfind: eliminate *: prefix in lib, not type
    	 proc: PROC_FOREGROUND for system(3) semantics (wait status return)
    	 pathtmp: fix mktemp() logic
    	 fts: fix FTS_NOSEEDOTDIR bug that botched ./* in top list
    	 include/ast/prototyped.h includes include/prototyped.h
    	 pathpath: fix strdup(0) bug
    	 optget: --html <foo@bar> => ...mailto:foo@bar...
    	 sscanf: fix sfsscanf => sfvsscanf typo
    	 magic.tab: strengthen tar recognition
    00-02-08 conf.sh: fix ifdef for systems that think sysconf(FOO) is const
    00-02-04 glob: fix globlist_t.gl_flags
    00-02-02 vm*: add NoF() for data only files
    00-01-27 fts: fix top level .==.. statp bug (thanks to dr. ek)
    00-01-25 conf.tab: fix LFS*_*LAGS typo
    00-01-24 astlicense: handle type=verbose, license.notice, author=*
    00-01-11 pathprobe: generate info for first probe script on PATH - duh
    	 ast.h: add NoF(x) for files that define no functions
    	 tmpfile: fix implementation
    	 global change for string ERROR_translate() dictionary names
    	 optget: fix new way but no long names off by one
    	 optget: handle [--dictionary?name]
    99-11-19 comp/conf.sh: `expr length XXX` is not universal
    	 drop sfstdio; stdio via functions everywhere
    	 drop Makefile conditionals (and follow our own advice for once)
    	 sfio: new stream after atexit() bug fix
    	 tm: Tm_zone_t.daylight=0 for standard time within zone
    	 stdio: fopen => _ast_fopen: only way short of binary compatibility
    	 Makefile: atmain.C falls back to atmain.c
    	 optget: add --keys, s<section> option
    	 stdio: _UWIN check for foreign stdio
    99-11-11 astlicense: add
    99-10-31 glob: fix regexec pattern; add PATH_ATTRIBUTES case check
    	 pathpath: path==0 means malloc space
    99-10-22 tmfmt: %C=2-digit-century, %k=date(1), %y=2-digit-year-in-century
    99-10-18 fastfind: expanded default db lookup
    99-08-11 magic: fix off by one registry malloc
    	 features/fs: add __RENAME checks for stat familiy (netbsd)
    	 features/fs: major()/minor() fixes for s5
    	 features/libpath.sh: netbsd fix -- ld.so not in std places
    	 misc/fastfind: fix codes path generation bug
    	 optget: beef up --?* description, fix <TR>...</TR> nesting
    	 pathprobe: check for override (writable key file) first
    	 features/time: int tmtimeofday(struct timeval*);
    	 optget: fix opt_info.num, even if opt_info.arg!=0
    	 fts: FTS_PHYSICAL => FTS_SEEDOTDIR, add FTS_CHOP
    	 fastfind: init dir tab with logical and physical name
    	 glob: add gnu GLOB_ALTDIRFUNC
    99-07-17 sfio: kpv update and sfhdr.h sync!
    99-06-24 stdio: fix fflush() to ignore sfseek(0) return value
    99-06-23 magic: '\r' is text not control to placate m$
    99-06-08 stdio: fix fseek,ftell semantics
    	 uwin stdio: fflush() => _doflsh() to avoid __cplusplus clash
    	 getopt: call liberror() to avoid error() conflict
    	 tmfmt,tmscan: %N zone type (nation code), %z zone minutes west offset
    	 tmfmt: - no pad _ space pad 0 leading 0 pad
    99-05-28 magic: fix 'x' == '*' for any number, magic.tab tweaks
    	 features/lib: verify that stat64 really works
    99-05-21 tm*: add TM_WINDOW==69 for consistent century windowing guard year
    99-05-18 tmtime: add century leap year calc anticipating unsigned time_t
    99-05-17 sfkeyprintf: handle %o and %x!!
    99-05-09 pathprobe: $HOME/.probe if not suid and st_uid!=geteuid()
    99-04-28 magic,magic.tab: add registry()
    99-04-24 regcomp: fix ksh pattern +! parse
    	 regfatalpat: add
    	 optget: make : ? ] double escape consistent in all contexts
    99-04-01 features: drop iffeio.h and stdio.h when only printf() used
    	 regex: fix stats() .l and .k count
    	 fmtquote: added; most general fmtesc() form
    99-03-22 fmtesc.c,ast.h: add fmtnesq()
    	 optget: --?x works for -x option flag
    99-03-17 features/limits.c: workaround solaris __EXTENSIONS__ _timespec bug
    	 workaround limits.h circular prereq with ignore stdio.h
    	 sfvprintf: %04e left-pad zero fixed
    99-03-03 fts: uncle already: add FTS_SEEDOTDIR to retain leading ./
    	 regex: REG_MULTIPLE, BM for fixed string alternation
    	 optget: embedded `-' optional in long options, prefix={0,1,2}
    99-02-14 fastfind: fix dir format bug that emitted wrong paths
    	 astconf: fix redef off by one bug
    99-02-11 pathcanon(): don't cache astconf("PATH_LEADING_SLASHES", NiL, NiL)
    99-01-23 optget: move <old_opt.h> back into <option.h>, no open-close
    	 optget: add "[index:long-name:description]" for --long-name
    	 comp/gross: add weak __libc_attr for irix < 6.5 compatibility
    	 features/limits.c: tweak the guards again
    99-01-11 fastfind: handle old format count byte order
    	 magic.tab: fix elf to use real phdr offset
    	 magic.c,magic.tab: fix | to act like switch/case
    	 comp/fross.c,features/hack: for gross hacks
    	 features/stdio: avoid sfio namespace pollution
    98-12-25 tmdate: yyyy.mm.dd
    	 pathprobe: fix procrun() cmd path bug
    	 fmtesq: add
    	 features/common: win32.alpha va_list
    	 magic: add pc alpha object
    98-11-11 strmatch: add STR_ICASE
    	 pathprobe: punt to $HOME/.probe/<key+HOSTTYPE> if not S_ISUID
    	 tmzone,tmdate: handle +-minutes, nn/MMM/yyyy
    	 stropt: fix nested quote pop
    	 tmfmt: add %K => %Y-%m-%d/%H:%M:%S
    	 sfio/stdio: fix fseek() SF_PUBLIC omissions
    	 fmtesc: catch '\' (duh)
    	 vmalloc: vmbest round bug fix
    98-11-01 fts.c: no pathcanon() if (fts_flags & FTS_PHYSICAL)
    98-10-01 features/stdio prototype fixes
    	 optget: strton() instead of strtol() for #
    98-09-22 regcomp: add REG_DELIMITED and REG_ESCAPE delimited re support
    98-09-15 fix _LARGEFILE64_SOURCE stuff
    	 ast_std.h: provide mmap() prototype
    98-08-11 fix sfpopen() to ignore SIGPIPE by ignoresig() for sfio but not stdio
    	 fix procopen() to ignore SIGPIPE by ignoresig() for PROC_IGNORE
    	 sfio sfpopen/popen update
    	 magic.src: fix ustar entry
    98-07-17 fix ftwalk() short by one malloc()
    	 add fts_notify()
    98-06-25 sfdcmore,sfdcprefix: add
    98-06-19 tokscan: add %f %g
    98-06-01 disc/sf*.c: memset(0) after disc malloc()
    98-05-11 strelapsed: y==Y
    	 fts: pathcanon() top list
    98-04-01 error: error_info.time for all msgs, just after cmd id
    	 error: no sfsync(sfstdin)
    	 sfio: sfpool, Sffmt_t update
    	 magic.tab: sgi core dumps -- why aren't these elf?
    	 stropt: (v+n) for unknown option is option value if n!=0
    	 procopen: fix setsid() for spawnveg() only
    98-03-19 malloc: add realloc foreign region check
    	 sfdisc.h: rename to match kpv disciplines
    	 fastfind: fix strcasecmp/strcmp directory prefix mixup
    98-03-17 features/fcntl.c,pathtmp,sftmp: add O_TEMPORARY
    98-03-01 pathcanon: fix PATH_LEADING_SLASHES to stat() both slashes
    	 pathcanon: add PATH_VERIFIED
    	 tmdate: add skip[] to expand separator char set
    	 fastfind: FIND_OLD for old 7 bit db, FIND_TYPE for new 8 bit typed db
    	 fastfind: default generates gnu LOCATE02 8 bit db
    	 magic: handle %s in mime description
    	 cdt: kpv update
    	 sfio: kpv update
    	 stdio: fpos64_t fseek64(), ftell64(), fgetpos64(), fsetpos64()
    	 stdio: fseek() => sfseek(SF_PUBLIC) to avoid locking
    	 fts: initialize parent stat[bp] from top level *after* statf done
    	 astmath: add -lm requirement test
    	 *: Astlong_t => _ast_*_t
    	 regex: simplify regcollate() (from doug)
    	 tmtime: preserve Tm_t*tm when calling tminit()
    	 astconf: add readonly PATH_ATTRIBUTES=[cirw]
    98-02-14 fastfind: add FIND_ICASE to ignore case
    	 tmdate,tmgoff: handle (+|-)hh[[:]mm[[:]ss]] absolute timezone
    	 tmdate: `<n> <part>' now assumes `next <n> <part>' instead of `this'
    	 tmfix: fix leap year bug that forgot to add 1900
    	 proc: add PROC_ZOMBIE
    98-02-06 strmatch() char class range bug fix
    	 regex char class range bug fix
    98-01-23 _WIN32: changed the #if logic again to accomodate _GNUC_
    	 mnt: grab the mount options too
    	 ast_std.h: hide getopt,getsubopt from stdlib.h
    	 features/limits.c: add gnu guard macros to avoid limits.h recursion
    	 features/mode.c: include "limits.h" instead of "FEATURE/limits.lcl"
    98-01-11 sfio.h: use Astlong_t, move Sfio_t Sfdisc_t typedef to top for stdio.h
    	 sfhdr.h: #undef SETLOCAL for hpux
    	 sfvprintf,sfvscanf: %I*x for sizeof(int_arg)
    	 handle ftruncate64 and truncate64
    	 dtopen.c: __hppa dll needs Dtset Dtlist Dttree refs here
    97-12-18 fmtnum: add
    97-12-11 magic: handle sgi 64 bit core dumps
    97-12-07 pathtmp: add override for TMPPATH,TMPDIR and cycling
    97-11-11 tm: handle 0 return from gmtime(),localtime() (dos negative time_t)
    	 features/stdio: fix fflush() macro to do physical sync
    97-10-31 astconf PATH_RESOLVE is logical if 3d&&!std, metaphysical otherwise
    	 magic: fix #! mime bug
    	 tm: tmtime() now calls tmfix() and adjusts tm_isdst too=>mtime() works
    97-10-11 dllfind,dlfcn: move to separate -ldll so -last can link static, duh
    	 Makefile,state.c: move forced header generation state.c => Makefile
    	 sfio: update including SF_WHOLE
    97-10-01 sfdostext: add \r=> sfio discipline
    	 stropt: NiL table => p=name for all name=value
    97-08-11 pathtmp: check pid to note forks
    	 procopen: FD_CLOEXEC rfd && wfd
    	 fts: fts_close() after fts_children() with no fts_read() now works
    97-07-17 error: sfsync(sfstdin,sfstdout,sfstderr) instead of sfsync(NiL)
    	 _sfcvinit: add sfio internal interface to base conversion tables
    	 strton: use _Sfcv* base conversion tables instead of sfsscanf()
    	 sfvscanf: use _Sfcv* base conversion tables
    	 mime: x- permutations now matched if exact fails
    	 mime: original- stripped from content-* headers
    	 tmdate: add yyyy-jjj, yyyy-mm-dd
    	 dllfind: add
    	 ccmapid: fix buf copy loop limit
    	 ccmapname,ccmapcpy: add
    	 sfstrtmp: add
    97-05-09 streval: fix up casts for pseudo-ansi cc
    	 features/types: use _ast_int_8 vars to verify support
    	 string/modedata: check for mvs.390 S_IFMT
    	 include/ast(_std).h: add #define __FILE_typedef
    	 magic: add ccode text check
    	 include/ftwalk.h: FTW_PATH=>FTS_NOCHDIR to avoid FTS_AGAIN (duh)
    	 fts: clear status for FTS_AGAIN (fixes rm -r bug)
    	 mnt: add mvs openedition w_getmntent()
    	 sfhdr: _hdr_float && <float.h> for correct MAXDOUBLE
    	 vmalloc/vmbest: if _std_malloc then use malloc()/free() not sbrk()
    	 remove: check _std_remove
    	 procopen: handle pio[{0,1}]=={0,1}
    	 setenviron,features/uinstd: test for mvs.390 dll environ hacks
    96-12-25 <sfio_p.h> -> <ast_common.h>
    	 __EXTERN__(type,object)
    	 __DEFINE__(type,object,value)
    	 magic: check strings in !CC_NATIVE code set too
    	 system: cmd==0 means check for shell access (xopen)
    	 sfhdr.h: fix sfrsrv prototype
    	 add __libc_malloc etc for gnu/linux
    	 astconf(NiL,path,name) == astconf(name,path,NiL) + no liberror
    	 fts_open: if toplist() stat fails return 0
    	 ftwalk: handle fts_open()==0 via one phony userf() call
    	 sfmode: S_ISFIFO default is SF_SHARE=0
    	 features/lib: _WIN32 _lib_vfork=1 by default
    	 unsigned<0 comparison and other fixes via sgi.mips4 cc
    	 stk.c: use <align.h> ALIGN_BOUND for stkalloc()
    	 features/lib,vfork: uwin fix
    	 ast_std.h: fix strto[u]ll prototypes with features/types _ast_int_8
    	 getsubopt: add for xopen 4.2 compatibility
    	 drop function __IMPORT__
    	 magic: more magic
    	 change #define FILE from Sfio_t to struct _sfio_s
    	 state.c: add generated includes that may be hit by std for MAM
    	 bytesex: forgot about sizeof(long)=>7; could we fix the name too?
    	 vmalloc.h: fix vmnewof() definition
    	 sfio.h,stdio.h,ast_common.h: pollution cleanup
    	 magic.c: add | op for switch
    	 Makefile: stdio.h was on both HEADERSRC and HEADERGEN -- don't do that
    	 drop pp:notice to get <sfio.h> ... <ast.h> to work
    	 regex: add [[:<:]]==\< and [[:>:]]==\> for bsd compat
    	 mime.c: ignore X-* headers while scanning for Content-*
    	 magic.c: check for negative indirect offsets
    	 magic.tab: fix dos entry that generated negative indirect offsets
    	 vmalloc.h: add vmstrdup() prototype
    	 hash.h: add hashgetbucket() macro
    	 magic.c: MAGIFILE is now a : file list
    	 mnt.c: another 4.4 bsd fix -- users must include <sys/crap.h>
    	 common: fix _WIN32 chicken&egg with va_copy
    	 sfio: forgot to set f->val along with _Sfi in sfexcept()
    	 Makefile: add mini target for uwin libmini.a
    	 sfcvt.c: workaround for flaky long double optimizers
    	 features/common: fix to work with va_list==void*
    	 regexec.c: fix REG_STARTEND subexpression offsets
    	 strmatch.c: don't forget <wctype.h>
    	 regrexec.c: fix REG_INVERT end boundary bug that missed last record
    	 astconf.c: notify(0,0,"a=b") called for each setenviron("a=b")
    	 pathcanon.c: check astconf(PATH_LEADING_SLASHES) to preserve //*
    96-11-28 _LARGEFILE64_SOURCE by default if possible: NOTE: assumes xopen
    	 regerror: fix for xopen
    	 getopt: fix for xopen
    	 magic: add ciao virtual database
    	 astconf: posix/strict/xopen implies "standard" conformance
    	 fs3d.h: hide mount prototype
    	 ast_std.h,mnt.c,features/fs: ncr port tweaks
    96-10-31 version 5.0
    	 add strtoll() strtoull()
    	 sfkeyprintf: upgrade to int_max args
    	 ast.h: add ssizeof() to work around unsigned botch
    	 conf.sh: add shell actions to conf.tab
    	 _DLL*: drop for _BLD_<lib> + __EXPORT__ + __IMPORT__
    	 sfio,cdt,vmalloc: kpv update
    96-10-11 <ccode.h>: add character code map support
    	 procclose: return shell style exit status
    	 features/fs: pun statvfs.f_basetype to statvfs.f_reserved7 for mvs
    	 uwin: add subdir for uwin additions
    	 ast_std.h: swab() is from <stdlib.h>
    	 sfio.h: <ast_std.h> if _PACKAGE_ast
    	 magic.tab: add mips[1-4], 64-bit
    	 port tweaks for sol.sun4 and sun4
    96-09-06 strerror: add
    	 fmterror: uses strerror
    	 str*search: use sfiso646() order
    	 strpsearch: add
    	 magic: add Magic_t.mime mime type return for magictype()
    	 mime.h: add
    	 strton: use sfsscanf()
    	 strperm: factor in umask() if no who
    	 pathtmp: add TMPPATH check
    	 libevent: add
    	 magic: add discipline to magicopen()
    	 mime: add discipline to mimeopen()
    96-08-31 regex: fix BM fail table generator
    96-08-11 mntread: fix mnt.type for SCO variant
    	 conf.tab: add SCO KERNEL_* sysconf() vars
    	 fastfind: add findwrite(), fix findread() FF_OFF omission
    	 ftwalk: reimplement on top of fts
    	 fnmatch,re_comp,regexp: reimplement on top of regex
    	 basename,dirname,fmtmsg,fts,ftw,getdate,getsubopt,glob: add
    	 hsearch,nftw,realpath,strftime,strptime,swab,tempnam: add
    	 tsearch,wordexp: add
    	 getcwd: cache last path for easy test
    96-07-17 error: sfsync(NiL) ... write ... sfsync(sfstderr)
    	 astconf: handle readonly *(DEV|DIR) vars
    96-04-01 swapop: fix stupid return value bug
    	 features/int.c: fix int_swap generation bug
    	 regnexec,regrexec: fix unsigned underflow init error
    	 ls.h: fix iblocks() to be in units of LS_BLOCKSIZE
    96-02-29 magic: space before function is definition with no call
    	 hash: drop hash_info from public interface
    	 hash: OBSOLETE hashlast()
    	 hash: add Hash_root_t.Hash_last_t to public interface
    	 add strsearch() and strnsearch() to complement strlook()
    	 add hashkey.h for keyword->long hash
    	 pathpath: pathpath(0,0,"",0) disables $0 $_ $PWD relative search
    	 sfio: sfstrtod+sfhdr update
    	 regex: fix REG_LENIENT to map BRE \[+?|] to ERE [+?|]
    	 change _std_malloc iffe test so it doesn't hang on alpha
    	 sfhdr.h: features/sfio generates _lib_cvt instead of _i386_cvt
    	 ast_hdr.h: add va_copy(a,b) to copy va_list b to a
    	 getopt: fix stupid getopt() -> optget() bug
    	 sfvprintf: %h? now downcasts
    	 regex: handle strto?l() errno in regcomp()
    	 sfstrtod: _Sfstrtod_already_defined -> _STUB_sfstrtod
    	 ast_std.h: hide valloc() and ignore <strings.h>
    	 sfkeyprintf: pass phony va_list for '2'
    	 regex: change HIT var type from int to size_t in special()
    	 ast.h: add EXIT_STATUS(x) to convert wait() status to sh exit status
    96-02-14 regex: add _ to \<...\> isalnum test
    	 regex: fix BM inner loop breakout
    	 features/types: size_t is signed on some systems! => _ast_size_t
    	 sfio: sfrd discipline peek optimization
    	 vmalloc: vmalloc.h malloc family macro upgrade
    	 tokopen: fix newline bug for non-restore open
    	 sfio: no inline for gcc until it emits for -g too
    96-02-12 sfio: internal upgrade
    96-02-09 regex: Boyer-Moore boundary fix
    	 vmalloc: snarf latest
    96-02-06 regex: add regrecord() and regrexec() for Boyer-Moore record filtering
    	 regex: rearrange regnexec() args to match buffer,count arg style
    96-01-31 stk: add STK_NULL to stk.h and stk.c
    	 regex: privatize regex.h and fix min re length computation
    	 workaround lazy strdup() implementations in features/lib _std_malloc
    	 fix stkclose() to free(stream) -- purify missed because of sfio links
    	 unused var cleanup
    	 port/mnt.c must include <ls.h> to get <ast_fs.h>
    	 add SF_FINAL to sfio and stk
    	 sfio reads now on natural block boundaries
    	 add #!!! <level> <message> !!! to tokline()
    	 add REX_BM pre-filter to regcomp/regnexec
    96-01-22 add regcomp env.paren overflow checks
    96-01-11 add Doug McIlroy's regex (converted to C from C++ by gsf)
    	 AT&T Research now
    	 sfgetr optimization
    	 regex buglets
    96-01-05 tweak magic.tab for win32
    95-12-25 add !(...) -> (...)! to fmtre()
    	 nt tweaks -- functions with no header proto must be defined extern
    95-11-24 version 4.1
    	 add mnt.h mntopen mntread mntclose
    	 convert fmtfs to mnt.h
    	 add RE_LEFTANCHOR and RE_RIGHTANCHOR
    	 gcc inlines must also have global library function instantiation!
    	 add hashview()
    	 fix strtape() internal buffer flow
    	 fix mntread() fs/dir transposition for uts mnttab
    95-10-31 change features/unistd.c includes to break limits-param cycle
    	 add cdt from kpv
    	 sfio snarf from kpv
    	 add [ht]search for _WIN32
    95-10-11 clarify PARANOID pathcheck() warning
    	 fix procopen() LIB_SPAWN environ bug with setenviron() cache
    	 fix setenviron() bug that forgot to reset environ if == 0
    	 add %Z ' ' output format to sfkeyprintf()
    	 sfio snarf for sfvprintf fix
    	 allow multiple hashscan() with scope caveat
    	 add comp/fakelink.h to synthesize a few symlink text patterns
    	 add !<xxx> magic to misc/magic.tab
    	 add FTW_TOP to inhibit recursion (for ftw side effects on top level)
    	 add memfatal() common malloc fatal exception message
    	 add dos \rtest to misc/magic.c/cklang()
    	 sftmp() O_EXCL+random to avoid collisions
    	 pathtemp() uses sftmp() randomizing
    	 features/fs uses SF_APPENDWR
    	 sftmp() uses pathtemp() -- don't worry, its not circular
    	 a few more _WIN32 compatibility additions
    	 realloc fixed to use VM_RSCOPY|VM_RSMOVE instead of obsolete 1
    	 add hashlook(tab, oldname, HASH_RENAME, newname)
    	 a few more tweaks to satisfy port warnings
    	 add _SFIO_INLINE_PRIVATE to provide real function too
    	 fix <dirent.h> installation test
    	 oops object / shared library compat with _sfgetl2 _sfgetu2
    95-09-11 add getopt() compatibility
    	 add fstat,lstat,mknod,stat fixes for _x versions in sys/stat.h
    	 add getconf CONFORMANCE - posix for things that aren't ast default
    	 sfio_t.h: #ifndef _SFIO_H #include "sfio.h" #endif
    	 snarf vmalloc from kpv
    95-08-11 fix malloc bug in magic
    	 update linux and bsd 386 magic entries
    	 error_info.auxilliary returns new level, |=ERROR_OUTPUT if msg done
    	 drop fnmatch from strmatch for sparc (solaris) until it collates
    95-07-17 fix port/astconf universe initialization
    	 fix misc/optget opt_info.nopt initialization
    	 drop tmset() TZ=... because it only worked when TZ=... was ignored
    95-05-09 mongo <ast.h> namespace cleanup
    	 drop > 2 year old obsolete interfaces
    	 sfvprintf.c fix for (char:8 short:16 int:32 long:64) architectures
    	 TMP_MAX back into conf.tab
    	 pathbin() and pathshell() now use astconf()
    	 fix pathtemp() to not cache getenv("TMPDIR")
    	 fix ftwalk() metaphysical to handle non-dirs too
    	 initialize *_info = { 0 }; for ancient ld semantics (NeXT)
    	 fix magic() to do vmfree()
    	 astconf(X_OK) must prefix lines with "getconf"
    	 use <wchar.h> and wctype in strmatch() if available
    	 _lib_utime_now checks utime(path,0)
    	 _lib_poll_notimer checks poll(x,0,timeout)
    	 add another _lib_utime_now check to port/touch.c
    	 fix dd_buf cast in dir/opendir.c
    	 split getconf.h into conftab.h and conftab.c for :READONLY:
    	 use mbtowc() only if MB_LEN_MAX>1
    	 sfio char* -> Void_t* cleanup
    	 handle old syntax in misc/magic.c
    	 sigdata.c holds readonly signal strings
    	 pathcheck() does AT&T checks for tools matching PARANOID - yuk
    	 unused var cleanup
    	 deprecate hash_info in favor of hashlast()
    	 fix bad conf.sh ksh integer interactions
    	 dll cleanup
    	 magic.c falls back to malloc for now
    	 add environ to <ast.h> -- C library global data syms are *RESERVED*
    	 sfhdr.h memccpy(1,2,3,size_t) prototype
    95-04-01 version 4.0
    	 convert to vmalloc
    	 allow sigcritical() nesting mismatch to work around vfork() bug
    	 add strexpr() primitive for streval() with user handle (like ftwalk)
    	 add <magic.h> and magic.c file command magic interface
    	 update magic mail message entry
    	 fix keyprintf() invisible char count nesting bug
    	 add sfstrnew(SF_READ|SF_WRITE) for alternate sfstropen() modes
    	 sfstrnew(SF_READ) but reading requires sfseek(), sfreserve()
    	 add conf.tab and conf.sh to nail C/POSIX limits/unistd macros
    	 add getconf() string interface to *conf*
    	 _DLL_INTERMEDIATE_DATA for systems that require indirect globals
    	 _DLL for building shared libraries with _DLL_INTERMEDIATE_DATA
    	 vecfile() restricted to S_ISREG()
    	 add spawnveg() for job control
    	 convert procopen() PROC_PGRP(id) to spawnveg()
    	 fmterror() returns error text given errno (strerror() does same)
    	 fmtsignal() returns signal text given errno (strsignal() does same)
    	 {sig_name,sig_text,SIG_MAX} -> sig_info.{name,text,sigmax}
    	 liberror("",...) omits [%s library] prefix
    	 update features/signal.c table
    	 add vmdisc() and change vmnewof() to use vmresize()
    	 fix conf.sh to allow refs to previously defined limits
    	 fix undefined entries in getconf()
    	 magic data in magic.tab
    	 fix stropt() pointer cast
    	 vmalloc() exception handler replaces nomalloc()
    	 merge sigdata.c into fmtsignal.c -- sun link needs function w/ data!
    	 sftmp() bug fix
    	 drop local <unistd.h> even with _POSIX_SOURCE
    	 fix vmstrdup() macro arg miscount
    	 fix conf.sh to handle enum'd symbolic constants in unistd.h
    	 drop malloc() et.al. prototypes from vmalloc.h
    	 fix sfvprintf() %d argument reference
    	 add OSF/1 AES symbol(s) to conf.tab
    	 determine standards prefix from conf.tab
    	 add _CS_SHELL to conf.tab
    	 getpath() default is confstr(_CS_PATH)
    	 getshell() default is confstr(_CS_SHELL)
    	 unify keyprintf user function args (should have learned by now!)
    	 add quad type to magic
    	 add astfeature() to unify universe style dynamic features
    	 add ftwflags() to determine FTW_* flags from astfeature()
    95-03-11 fix stropt() to not modify its *const* arg
    	 handle "' quotes and chresc() in stropt() values
    	 , treated like :space: between stropt() options
    	 fix procopen() fd dup to ignore self-dups
    	 add library id[] to misc/state.c
    	 add ftwalk(FTW_METAPHYSICAL) for posix -H
    	 sfvprintf() now handles balanced () in %()
    	 add tmfmt() with buffer size check to replace tmform()
    	 add fmttime() calling tmfmt() to fit fmt*() mold
    	 add <keyprintf.h> and keyprintf() to support %(...)? in commands
    	 add Hash_table_t for size==0 in stropt()
    	 add EXTTYPE extended header to tar.h
    95-02-14 sfmove() buffer size overflow fix
    	 add _SFSTDIO_H to sfio.h
    	 rename setenv() to setenviron() -- posix finally decided
    	 rename <option.h> opt_* to opt_info.*
    	 update features/unistd.c for _SC_* and _PC_* posix additions
    95-01-19 (char*)uchar cast in fmtesc()
    	 fix hash bucket memory leak in hashlook() [via John Mocenigo]
    	 update strings/strtape()
    	 fix optget()/optjoin() to handle leading +
    	 add ALIGN_ prefix to <align.h> identifiers
    95-01-11 change tm/*.c tmset(0) to tmset(tm_info.zone) to keep user setting
    	 fix tmform() %Z null pointer dereference
    95-01-01 add this RELEASE file
    	 fix strperm() to properly handle "644 file"
    	 fix tokline() to return last ' ' terminated line in string
    	 fix tokscan() to properly handle  splice
    	 add fmtesc() to complement stresc()
    	 add LS_NUMBER to fmtls()
    	 drop spurious optusage() ' '

### libardir changes

    03-09-17 ardir.c: rewind initial peek to open position in case its /dev/stdin
    03-04-05 ar-port.c: fix bug that skipped initial long name entry
    	 ar-port.c: handle netbsd.i386 ' <long-index>' vs. '/<long-index>'
    03-02-05 ar-port.c: handle solaris TYPE_port variation
    03-01-30 ar-port.c: handle member name length == 16 (no terminator)
    02-10-20 ardir.c: add ardirlist()
    02-08-09 ardir.c: ardiropen() fails if !S_ISREG unless ARDIR_FORCE
    02-06-11 ar-port.c: handle 4.4BSD `#1/size' long names
    02-06-06 #ifndef EILSEQ => EINVAL
    02-05-07 first release

### libcmd changes

    06-02-14 tail.c: fix -f bug that lost fast stream data
    06-02-11 getconf.c: exit 1 if name invalid -- duh
    06-01-28 cp.c,rm.c: fix astquery() 'q' to return and not exit()
    05-08-11 fmt.c: fix -o to handle raw --usage strings
    05-05-17 cat.c,head.c: disable EPIPE error messages
    05-04-14 chgrp.c: -f means all non-syntax error messages
    05-04-11 fds.c: add from old internal open(1)
    05-04-09 cmdext.h,cmdlist.h: generate from source -- about time
    05-03-24 features/symlink: verify { lchmod lchown } implementations
    05-03-07 date.c: add --listzones to list the time zone table
    05-02-14 chmod.c: add --reference=file
    05-01-11 cat.c: restore output stream to binary mode on exit
    04-12-15 cp.c: add --preserve high resolution time support
    04-12-08 date.c: add high resolution time support
    04-12-01 cmp.c: fix %6I*ld => %6I*d -- doh
    	 fmt.c: handle "n operands n"
    	 head.c: handle -cN -nN, N > 4Gb
    04-11-22 cmp.c: handle >2G chars/lines
    04-11-18 fold.c: add --prepend=text, --append=text
    04-10-31 tail.c: use SF_LOCKR macro
    04-10-28 tail.c: use strtol() for old stype [+-]number[suffix] -- doh
    04-10-22 cp.c: check rename() errno==ENOENT to retain destination
    04-10-11 fmt.c: fix -o,--optget sublist bugs
    	 tail.c: use strton() for number conversion
    04-10-08 pathchk.c: add empty path and -p - first component char
    04-10-01 fmt.c: add -o,--optget concatenated usage string format
    	 stty.c: context is ERROR_INTERCATIVE
    	 rm.c: restore 3d before exit
    04-09-24 pathchk.c: fix docs
    04-09-14 date.c: add %| and %& --parse docs
    04-08-27 cp.c: add FTW_DC check -- duh
    04-08-01 fmt.c: handle last char != '
    04-07-22 date.c,uname.c: access() => eaccess()
    04-07-01 fmt.c: handle large input lines -- ouch
    04-06-11 id.c: fix -r to output something!
    04-05-27 expr.c: fix `:' op subexpression output
    04-04-15 chmod.c: follow symlink for relative mode
    04-04-12 Makefile: add STDCHMOD (for osf.alpha)
    04-03-19 tail.c: handle -f sfreserve() large chunk failure
    04-02-29 cp.c: decouple -f and -i for standard CONFORMANCE
    	 cp.c: mv now attempts rename() before remove()+rename()
    	 date.c: -f format or +format disables system clock set
    04-02-14 cp.c: add -F --fsync to call fsync(2) for each copied file
    04-01-05 head.c: -s now uses opt_info.number for >2Gb skip
    03-09-18 tail.c: add --log
    03-09-11 rm.c: add --unconditional
    03-08-11 fold.c: add --delimiter=c to break at c
    03-07-28 features/time: change settimeofday() test to 2nd arg of (void*)0
    	 expr.c: add {match,substr,index,length,quote}
    03-07-15 fmt.c: fix trailing space bug
    03-06-20 uname.c: fix -p constant string overwrite
    03-06-04 stty.c: add undef to control assignment docs
    03-05-31 uname.c: add -f and sysinfo()/confstr() compatibility via astconf()
    03-05-27 rm.c: fix inappropriate "/.." append path overflow
    	 cut.c: snarf from dgk
    03-05-18 rm.c: check st_nlink to verify progress w.r.t. ftwalk/fts
    03-05-15 join.c: fix stealth -v2 bug (thanks ahs)
    03-05-04 wc.c: drop trailing space for `wc -l < file'
    03-03-21 date.c: add %Q/recent/distant/ docs
    03-02-19 date.c: fix %+|!flag docs
    02-11-14 update for cmdinit() 4th arg and ERROR_NOTIFY for interrupt cleanup
    02-10-02 date.c: tmform() => tmfmt()
    02-09-30 date.c,uname.c: change execv() calls to procrun(): exec|exit => bad
    02-09-06 wclib.c: fix 1 char-at-a-time miscount bug
    02-08-19 chgrp.c: convert to use <cdt.h>
    02-07-23 join.c: fix comm snarf typo
    02-04-05 date.c: add %u
    02-01-24 stty.c: ifdef a few more macros for uts (yes, its still running)
    01-12-14 date.c: clarify %z doc
    01-10-31 mkdir.c: mkdir() on existing dir could fail with errno!=EEXIST
    	 uname.c: add execve() loop check for unknown options
    01-10-29 tail.c: SF_SHARE on only if not reading through EOF
    01-10-11 getconf.c: fix usage typos
    01-09-11 cp.c,cmd.h: handle . in argv[0]
    	 cp.c: add O_BINARY to all open() calls
    01-09-06 tail: input streams must be SF_SHARE -- duh
    01-07-16 stty: fix cntl() macro for CC_NATIVE!=CC_ASCII
    01-05-31 date: fix /bin/date fallback logic
    	 stty: fix a few mismatched flags, -a and -g option logic
    	 stty: tone down sane to modify current settings rather than from zero
    01-05-01 uname: -i => -h, add sol.sun4 -i, add sgi -R, punt to /usr/bin/uname
    01-04-17 date,rm: add
    01-03-07 cp: fix readonly string mod on "."
    01-01-23 cp: `cp foo' => `cp foo .' only for CONFORMANCE!=standard
    00-12-01 cut: multibyte support
    00-10-31 mkdir: handle races by checking EEXIST
    00-09-20 cp: copy argv to stack before modifying in place
    00-05-18 add setlocale(LC_ALL,"")
    00-04-30 join: drop wierd opt_info.argv reference
    00-03-17 expr: add == operator -- duh
    	 cp,ln,mv: delay pathcanon() on destination to verify `cp a b/.'
    	 getconf: use astgetconf for proper message control
    	 ERROR_translate: dictionary update
    00-03-08 tail: handle multiple -f files
    00-03-07 fmt: add
    00-03-07 dirname: handle PATH_LEADING_SLASHES as documented
    	 tail: accept + options
    00-02-14 chmod: --ignore-umask to ignore umask(2) in symbolic expressions
    	 chmod,chgrp,cp: use FTS_NOSEEDOTDIR for correct path construction
    	 cat: fix -n (was ignored, wow)
    00-01-27 getconf: add "-a" and "-v spec" for sol7.* compatibility
    99-09-09 join: fix -j1 vs. -j 1, add --ignorecase
    99-06-22 paste: defualt delim in writable string
    99-06-16 cat: fix --dos-ouput typo
    99-06-11 cp: tighten chown() diagnostics
    99-06-08 expr: nothing for NULL string bug fix
    99-05-21 paste: fix missing newline columnize bug
    99-05-20 mv: do not check for `mv foo foo' since rename() handles it
    99-05-01 cmp,comm,cp/mv/ln,expr,fold,getconf,head: long options
    	 join,logname,paste,pathchk,tail,tee: long options
    99-04-10 uname: long options, stdize -a
    	 chmod,head,tail,rev: long options
    	 cut: long options, pass regression test 02
    99-04-07 cat: long options, fix O_TEXT modes
    99-01-11 tail: fix +n
    	 join: another ggs/psm bug
    	 join: all 1 and/or 2 to be unseekable
    99-01-01 cp: fix -p
    	 chmod: drop -l option because of clash with l (lock) mode
    98-12-25 cat: add -T to sfopen(,,"rt")
    98-11-11 chgrp,chmod: cannot open file stream => not found
    	 join: fix another ggs/psm bug; thanks guys
    98-10-20 cp: fix cp -rp to update dir times too
    98-09-22 join: fix ggs null field bug
    98-08-11 join: fix last regression test bug
    98-05-29 join: add jp->common to handle boundary conditions
    98-03-11 cat,cp,rev,tee: fix sfmove() error checks
    98-03-01 join: fix bug that emitted records more than once after eof
    	 cp: fix sfmove() error check
    98-02-14 cp: -R physical, -[HLP], -r getconf(PATH_RESOLVE)
    98-01-11 cp: check sfclose() return value
    98-01-07 chown,chgrp,chmod: use fts for -R
    	 mkdir: fix -p default mode
    97-12-07 mkdir: fix umask() reset
    97-11-11 chown,chgrp: proper interpretation of -h,-l for lchown()
    	 chown,chgrp: only chown() if uid or gid change
    97-10-31 mkdir: do umask right
    97-08-11 cmdinit: clear opt_info.index to allow multiple calls
    	 cp,ln,mv: add
    97-07-17 join: fix a few more -a bugs
    97-05-31 expr: optget() only if CONFORMANCE==standard
    97-04-01 join: fix a few bugs that make it work!
    96-12-25 head: sfset(sfstdin,SF_SHARE,1)
    	 Makefile: add -last to cmd lib list
    	 drop function __IMPORT__
    96-08-11 tail: check for truncated file and rewind for -f
    96-04-08 update <cmd.h>
    96-02-29 uname: -a like std, -l for everything
    	 id: add -a (default)
    96-02-14 wc: speed up inner loop newline breakout
    96-01-30 unused var cleanup
    96-01-01 AT&T Research now
    	 pathchk: handle getcwd(0,0) error
    	 expr: switch to <regex.h>
    95-11-11 add expr.c
    	 fix cut exit code and -s optimization
    95-10-11 add extern b_* to cmd.h
    	 add void* context 3rd arg to b_main()
    95-05-09 add getconf
    	 cat -u avoids mmap
    	 add chown|chgrp -m uid|gid map file
    	 add chown|chgrp -P for systems with lchown(2)
    	 chown|chgrp -P => lstat() too!
    	 chmod|chown|chgrp -HLP
    95-04-01 version 1.2
    	 add rmdir
    95-02-14 fix mkdir -p symlink bug
    	 fix mkdir '/' skip bug that went one too far

### libdll changes

    06-01-25 dllplug.c: add errorf() library message for dlopen() error
    05-02-14 dllscan.c: "" || "-" => NiL
    04-10-01 dllfind.c: drop ksh "builtin" workaround
    	 dllscan.c: directory prefix in name limits search to dir and siblings
    04-07-22 dllscan.c: access() => eaccess()
    04-01-30 dllfind.c: dllplug(error_info.id) then dllplug(0)
    04-01-28 dllscan.c: update for new plugin scheme: lib/foo/bar.xxx
    	 dllplug.c: add dllplug() for plugin dllfind()
    03-03-12 dllfind.c: dlopen() with RTLD_GLOBAL|RTLD_PARENT defaults
    03-02-11 dllscan.c: change LIBPATH to <dir>[:<env>[:<pat>]][,...]
    03-01-08 dllscan.c: hack version logic again -- is consistency rocket science?
    03-01-07 dlfcn.c: fix darwin.ppc dlopen/dlsym/dlclose
    02-11-18 dllfind.c: add path,size args (with backwards compatibility checks)
    02-11-15 dllfind.c: check for ./path if '.' in path but no '/'
    02-08-30 dllfind.c: fix a bug that returned uninitialized value on not found
    02-08-28 dllscan.c: handle and display bin as a sibling dir
    02-07-31 dllscan.c: add dllsopen,dllsread,dllsclose
    	 dllfind.c: use dllsopen,dllsread,dllsclose
    02-07-26 dllfind.c: add dllinfo()
    02-06-27 dllnext.c: define _GNU_SOURCE to enable RTLD_NEXT
    02-03-17 dllfind.c: fix dll prefix search (for cygwin)
    02-01-11 features/dll: include <dlfcn.h> only if _hdr_dlfcn&&_lib_dlopen
    01-10-31 dlfcn.c: change hp.pa dlopen() prototype (<dlfcn.h> but no -ldl!)
    01-09-25 dllfind: add LIBSUFFIX
    01-07-17 dllfind: do at least one dlopen() to prime dlerror()
    01-05-29 dlopen: fix dlopen(0,0) for HP
    01-04-20 dllfind: use getconf HOSTTYPE LIBPATH LIBSUFFIX
    01-02-14 features/dll: fix unbalanced ' quote and ancient hostinfo reference
    00-01-26 dlllook: add -- dlsym() with `_' weak prefix fallback
    99-04-01 features/dll: drop <stdio.h> -- iffe protos printf
    99-03-19 static=1 for all but win32.*
    98-06-01 dllfind: fix version search
    98-03-11 features/dll: probe for _DLL_RLD_SYM
    98-03-01 dllnext: fix to work!
    98-01-23 -ldl test moved to lib0ast
    98-01-11 update for astconf("LIBPATH")
    	 add dllnext(flags) to uncover next layer
    	 dllfind() and dllnext() in separate files (for 3d)
    97-10-11 move from libast so libast can link static

### libexpr changes

    05-10-25 exeval.c: fix I2F unsigned cast
    05-04-20 exeval.c: fix sscanf() runtime argument check logic
    05-01-11 Makefile: fix exop.h generation to handle spurious #define's
    04-12-14 exeval.c: handle printf "%% %x"
    04-04-15 exeval.c: handle scanf %s -- forgot that regression test!
    04-04-01 exparse.y: drop #pragma prototyped
    04-02-26 add scanf() and sscanf()
    02-10-02 exeval.c: tmform() => fmttime(), static nmbuf[] => fmtbuf()
    02-09-11 expr.h: move exbuiltin[] to private exlib.h
    99-09-22 exparse.y,exeval.c: add for(ID[DYNAMIC])
    	 exparse.y: ref[i].ref
    98-12-25 excc: fmtesq() to handle
    98-11-11 expr.h: add disc matchf for strmatch
    	 exlib.h: fix exeval string mem leak with Expr_t.ve
    98-09-11 expr.h: move Exdata_t to last public element of Exnode_t
    98-07-17 label: return type INTEGER
    	 add exdump() for debugging
    98-05-22 STRING * STRING == common chars by position, ' ' for diff
    98-05-11 add function args; NOTE: auto's still global
    98-04-01 sfprintf Sffmt_t update
    98-02-14 fix aggressive freenode
    98-02-04 finally drop exstr*() for vmalloc regions
    97-12-07 preprint adjusts l count for %[doux]
    97-10-31 tweak INTEGER <=> auto conversions
    97-10-01 INTEGER is now Sflong_t
    97-08-11 add pathfind()
    	 add '$' to identifier set
    	 eliminate S2B at PROCEDURE level
    97-07-17 discipline interface (incompatible but only tw,cql affected)
    	 add excc() to generate C expression code
    	 drop exinclude()
    	 add printf base param (%width.precision.base<format>)
    96-12-25 rearrange exparse.y to keep yacc and bison happy
    95-08-11 drop exseek(), add exstatement(), exrewind()
    	 tune excontext()
    95-05-09 drop %token for tokens in %binary,%left,%right to avoid redef errors
    	 add EX_CALL and EX_SCALAR to refval|getval|setval elt arg
    	 excomp with sp==0 and fp==0 resumes from previous context
    	 fix exseek()
    	 loosen excast() restrictions
    	 fix Oexparse.[ch] generation
    95-04-01 add solaris yacc bogus yyact index makefile workaround
    	 fix switch newof() size=0!
    95-03-19 fix exstore() alignment bug
    95-01-11 prepare extoken.c for TRACE_lex==debug-level
    	 add exseek() for backup

### librecsort changes

    06-02-14 recsort.h: always __EXPORT__ rs_disc()
    06-02-09 rstemp.c: sfset(SF_READ|SF_WRITE) not needed
    05-12-01 -lsync event callout bug fixes -- finally working?
    05-11-28 rswrite.c: honor RS_OTEXT
    05-11-09 rsmerge.c: fix RS_ITEXT+notify logic
    05-10-18 rsprocess.c: RS_READ callouts finally in the right place
    05-10-12 rstemp.c: keep temp write SF_WRITE and temp read SF_READ
    05-08-22 rsmerge.c: fix RS_WRITE callouts
    05-06-30 rsmerge.c: handle all RS_TEXT record formats
    05-06-28 add rsnew()+rsinit() to split rsopen() for rsfile*()
    05-06-27 rstemp.c: add temp file support and RS_TEMP_* events
    	 rsfile.c: add input/output file open RS_FILE_* events
    05-06-11 rskey*.c: initialize disc->data via REC_*_TYPE macros -- doh
    05-05-15 handle disc->data Recfmt_t
    04-10-31 rsmerge.c: fix EOF detection
    04-10-15 rs-copy.c: add
    04-10-11 recsort.h: change int count to Sfulong_t count
    04-09-28 recsort.h: add { RS_TERMINATE RS_DELETE RS_ACCEPT RS_INSERT }
    	 rsprocess.c,rswrite.c: initial RS_INSERT code -- not right yet
    04-08-11 rskeydump.c: list key.nproc if >1
    04-06-15 rsprocess.c: fix V format record read
    04-02-11 rskey.c: fix old ast reclen:fieldlen:offset parse
    03-10-11 recsort.h: add RS_IGNORE Rs_t.type hint
    03-09-18 rswrite.c: fix RS_WRITE exceptions
    03-09-06 rskey.c: add 'Z' key_z_code for zoned decimal
    03-09-04 rsprocess.c: rs->disc->data==-1 => ibm v format records
    03-09-03 rslib.c: rslib() separator expanded to [,\t\r#0093;
    03-09-01 recsort.h: add rslib(), discipline stack, extra event arg
    03-08-29 recsort.h: add RS_READ and RS_WRITE events
    03-08-15 rskey.c: add -Jseed for random shuffle (jumble)
    03-05-27 rskey.c: add Ci[o] code set [conversion]
    03-05-26 rskey.c: add 'p' packed decimal (bcd)
    03-05-23 recsort.h: add Rskey_t.code for global ccode index
    03-05-22 rskey.c: handle -k.reclen -k.position.length
    03-05-21 recsort.h: add events mask to Rsdisc_t, change Rskey_t disc to pointer
    	 rsnotify.c: add
    03-03-07 Makefile: generate dll for dr. ek
    03-01-21 rsmerge.c: fix typo that kicked in on large (~100K) record sizes
    01-01-01 recsort.h: _RSHDR_H => _BLD_recsort; should have been done years ago
    00-08-31 rskey.c: fix code() buffer off by one (too far)
    00-03-17 rskey.c: consult RLIMIT_DATA for size limits
    00-01-25 rskey.c: win32.i386 optimizer generates bad code for key_n_code
    99-11-19 rskeylist.c: add usage
    99-07-28 rskey.c: factor number of key fields into rs.disc.key
    99-03-03 recsort.h: add RSKEYDISC() to get Rskey_t.keydisc from Rsdisc_t*
    98-08-11 add rsmerge() write error detection
    96-12-25 add (ulong) for alpha 64 bit << bug (ahem..correct stdc interpretation)
    	 add (int) for unsigned char subtracts
    	 drop function __IMPORT__
    	 use vmalloc() for all allocations
    	 we're getting sick of bsd: <stdlib.h> has a radixsort() prototype!
    	 unroll rs-rasp.c for the hp.pa compiler; don't trust it!
    96-10-31 sfio,dll update
    	 drop MAXFIELD restriction by converting to linked list
    	 add -k*a to accumulate fields from dup keys
    96-10-22 K&R cast cleanup
    96-10-17 iffe test for sizeof(long)==8
    96-10-15 oops -- regression test bug let rswrite() bug through
    96-10-11 all regression tests pass for all methods
    96-10-01 rskey discipline and eventf; remove libast dependencies
    96-09-20 rskey(kp,s,obsolete)
    96-09-18 first working version with -lsort (ok, so -c and -m don't work yet)

### libsum changes

    05-02-14 sumlib.c: split into sum-*.c
    	 sum-sha2.c: add SHA { 256 384 512 }
    04-02-29 Makefile: compile with $(CC.PIC) for codexlib/sum $(CC.DLL)
    03-12-16 add { crc prng } generic methods and maps[] to these methods
    03-12-16 sum.h,sumlib.c: add sumdata()
    03-09-29 sumlib.c: fix FNV to use ^ instead of +
    03-04-28 sumlib.c: drop md5 `zeroize' for performance
    	 sumlib.c: add FIPS 180-1 SHA-1

### libuu changes

    03-01-07 uulib: check UU_HEADER in bx_header()
    01-03-27 uulib: add UU_LOCAL for local path conversion
    00-03-06 uulib: !UU_HEADER decode checks for candidate encodings
    00-03-04 uulib: add posix decode size check
    98-12-25 uu_encode: fix dp->fill usage
    98-11-11 uulib: add binhex encode

### libvdelta changes

    04-03-14 vdelta.h: #if !_DLL => #if !defined(_DLL) to handle empty value
    08/11/95 version 2.0 -- new delta layout but old update recognized
    04/24/95 back out of latest version -- incompatible deltas generated

### libbz changes

    03-05-13 sfdcbzip.c: add SF_DBUFFER exception, SF_SHARE before sfreserve()
    02-02-14 blocksort.c: drop -O for msvc
    02-01-24 bzhdr.h: rename from bzlib_private.h for 14 char fs
    01-01-01 bzlib.h: add _PACKAGE_ast checks
    99-09-11 sfdcbzip: return >0 if discipline pushed
    99-07-17 sfdcbzip: don't free disc on SF_CLOSE
    99-03-17 split library from command, sfdcbzip.[ch]

### libz changes

    05-05-11 sfdcgzip.c: change return value to [cgv], add vcunzip read check
    04-02-14 sfdcgzip.c,sfdclzw.c: add SFDCNEXT()/SFDCPREV() calls
    03-05-13 sfdcgzip.c,sfdclzw.c: add SF_DBUFFER exception, SF_SHARE+sfreserve()
    03-03-13 gzio.c: eliminate fixed gzprintf() buffer size via sfio string stream
    03-01-20 zlib.h,gzio.c: add gzreopen()
    02-09-11 zlib.h: move 64 bit counts to internal_state
    02-08-05 add z_off64_t, gzseek64() etc. to preserve old binary interface
    	 work around 2^32 file size limitations
    02-06-11 add uSize == unsigned _ast_intmax_t; fix header size check
    02-05-22 zconf.h: fix __32BIT__ logic
    02-03-11 infblock.c: apply double free patch
    02-03-09 gzio.c: add stream->fatal to mark fatal errors previously ignored
    	 sfdcgzip.c: fix exception return values and mark SF_ERROR on fatal
    02-01-30 minigzip.c: error() => mgzerror() to avoid ancient ld dup sym error
    	 minigzip.c: [uU] in executable base name => gunzip, otherwise gzip
    01-09-18 zconf.h: include <ast_std.h> for __IMPORT__ and __EXPORT__
    00-09-11 gzio: don't set verified=1 in check_header() for concatenation
    99-11-19 gzio: add missing _PACKAGE_ast
    99-09-11 sfdcgzip,sfdclzw: return 1 if discipline pushed
    99-08-11 gzio: fix gzread() z_err to keep Z_STREAM_END after check_header()
    99-07-17 sfdclzw: don't free disc on SF_CLOSE
    99-06-23 fix gzread/gzwrite to return -1 on error (fixes sfio disc loop)
    99-02-14 fix SFGZ_SETPOS to flush/sync for mode=='w' only
    99-02-04 add SF_CLOSE to output trailer before the underlying stream is closed!
    98-12-01 drop lzwWrite and lzwSeek in sfdclzw
    98-11-01 pushed stream buffer size is SF_BUFSIZE
    98-10-01 add SFGZ_GETPOS and SFGZ_SETPOS
    98-03-19 sfgzip => sfdcgzip

### libcoshell changes

    05-04-19 cowait.c: beef up invalid message tests and diagnostics
    05-04-11 drop fixed CO_MSGFD for $_coshell_msgfd
    05-04-07 coexec.c: fix !_lib_fork&&_map_spawnve close-on-exec redirection
    04-09-22 cowait.c: remove CO_SERIALIZE temporaries after listing -- duh
    04-09-01 co*: add CO_SERIALIZE
    04-07-22 system.c: access() => eaccess()
    04-02-11 coinit.c: fix CO_CROSS PATH initialization
    02-10-30 coclose.c: fix reference-after-free bug in coclose()
    02-01-31 codata.c,coopen.c: fix CO_MSGFD parameterization
    02-01-24 coopen.c: fix small memory leak
    01-10-26 coopen.c: hung sfclose(fp) -> close(sffileno(fp)) -- wow
    01-09-11 coinit.c: fix coident[] for ancient bsh that die on `test == 1'
    	 coinit.c: and fix coident[] to weed out buggy ksh88i trap on exit
    01-05-31 co*: add CO_CROSS, expose CO_DEVFD
    01-04-23 coquote: add state.type to avoid getenv() overwrite on some systems
    01-01-01 cokill: killjob => cokilljob, killshell => cokillshell
    00-12-18 coinit: CO_OSH ? "${!-$$}" : "${!:-$$}"
    00-10-25 codata: $ZSH_VERSION is not ksh
    00-02-14 procrun,system: system(3) returns wait() status (not shell status)
    99-11-19 co*: add CO_OSH for bsdi lack of times(1)
    	 coexec: CO_IGNORE for all but real ksh
    98-06-22 coinit: quote cd path arg

### libcs changes

    05-02-04 Makefile: drop -lnetinet (for lynxos)
    04-07-22 csopen.c,cssend.c,csauth.c,cslocal.c: access() => eaccess()
    04-07-19 cslocal.c: call spawnveg() for standalone 3d
    04-03-25 csrecv.c,cssend.c: OPEN_MAX_CEIL => OPEN_MAX
    03-08-01 csdata.c: add NoF pure data workaround, drop const + prototyped
    03-03-28 msglib.h: add D_FILENO ifdef
    02-10-02 features/lib,genlocal.sh: add ssh, pid to hang warning
    	 msglist.c: tmform() => fmttime()
    01-12-12 cssfd: CS_POLL_CLOSE now close()'s if not dropped -- double duh
    	 csstat: change down test to avoid unsigned long overflow
    01-10-31 cssend,csrecv: use msg_accrights over msg_control
    	 cspath: don't check /dev/fd/* -- duh
    01-05-11 csserve: sync cs.* with css->*
    	 csspoll: handl cspoll() EINTR that doesn't set cs.interrupt
    01-01-01 cspoll: fix getmsg() flag arg
    	 csaddr: fix local host addr initialization
    00-06-01 csopen: handle dynamic ip assignment underfoot
    00-05-11 csopen: handle /dev/tcp/local/9876/FOO/other
    00-05-09 cssfd: CS_POLL_WRITE implies O_NONBLOCK
    00-02-14 cschallenge(): add stat() to verify touch()
    00-02-03 features/lib: add sys/types.h to htons etc. header refs
    00-01-25 genlocal: use package instead of hostinfo
    99-10-07 csbind: NODELAY for CS_ADDR_NOW only
    99-09-22 cs*: add CS_MNT_TAIL for multi-char mount files
    	 css: _UWIN workaround for st_ino verification
    99-07-17 csaddr: clear more state->flags bits to avoid prev csopen() carryover
    99-05-20 msg*: handle f_basetype and f_fsid for redhat 6.0 linux -- boo
    99-05-13 css: fix disc.wakeup logic
    	 cspoll: add debug=6 poll trace
    99-04-23 csaddr: check for 127.0.0.[01] from hostname lookup == local
    98-06-29 cs.h: add Cs == (&cs)
    98-06-03 csserve: fix SIGCHLD exit bug
    98-02-14 csopen: add PROC_ZOMBIE for systems that don't fork() in csdaemon()
    97-11-27 csopen: /dev/tcp/*/inet.*/user for client inet.* authentication
    	 css.h: add CSS_AUTHENTICATE for server inet.* authentication
    97-11-11 csread: add CS_RESTART to restart on interrupt
    	 cslib: CS_AUTH_MODE for authentication file mode
    	 cs.h: drop CS_SVC_SERVICE, add CS_SVC_SUFFIX
    	 SERVICE.mk: executable name changed from server => `service'.svc
    	 csopen: rm CS_MOUNT_PROCESS if no connect and pid invalid
    97-07-17 add css.h, csserve() on top of css
    	 CS_INTERFACE=2 for thread safe state instead of global cs.*
    	 cspoll(CS_POLL_WRITE) events cleared on write
    	 csspoll(timeout,CSS_INTERRUPT|CSS_ERROR)
    	 cs.h,msg.h: fix dll import/export
    97-05-09 cslib.h: check _hdr_netdb,_hdr_netinet_in,_hdr_netinet_tcp
    	 features/lib: statvfs.f_fstr
    	 msglib.h: <ast.h> before "cs_lib.h"
    97-04-01 csport: htons() done too soon
    96-12-25 genlocal: add correct nslookup query
    	 fix sizeof(long)==4 assumptions
    	 install genlocal and genshare in $(INSTALLROOT)/lib/$(ID)
    96-02-29 use <hashkey.h>
    	 add csport()
    	 drop CS_MOUNT_*; use csvar(CS_VAR_*,trust) instead
    	 CS_VAR_PROXY ($CS_MOUNT_PROXY) names proxy connect stream
    	 csopen() attempts proxy open on local failure
    	 hold CS_PROC_FD_TST cssend() fds until next cssend()
    	 csread(CS_LINE) really means 1 line
    	 fix cslocal() and csopen() fdp initiate timing bug
    96-01-31 add warning to local rather than generate on install
    96-01-22 no <sys/uio.h> on linux (defined(MAX_IOVEC))
    95-11-11 trap 127.0.0.[01] local address alias in cspath() and csntoa()
    95-10-31 CS_MNT_OTHER '.' -> '#' to placate NT (trailing . ignored -- thanks)
    95-10-11 export -> coexport
    	 add dirsize() to cslib.h
    	 check _mem_d_reclen_dirent for d_reclen
    95-08-11 (done)(handle,EXIT_TERM(signal)) called on csserve() interrupt
    		0 return ignores signal
    	 csserve() now creates local auth dir if not there, duh
    	 fix genlocal hostinfo timeout
    95-07-17 fix remote auth off by one error
    95-05-09 add linux /proc/<pid>/fd/<fd> to cssend()-csrecv()
    	 add bsd4.4 msghdr.msg_accrights -> msghdr.msg_control mods
    	 bsd4.4 thinks S_ISFIFO() and S_ISSOCK() are the same!
    	 features/cs.c now uses sfio
    95-04-01 convert genlocal.sh to hostinfo
    95-03-19 bsd4.4 stole devname(), so use devpath() in cspath()
    94-12-15 csinfo("-",0) gets standard info

### libpp changes

    06-01-11 pplex.c: fix rpcgen pp:passthrough header splice bug
    05-12-16 pplex.c: fix imake pp:passthrough comment splice bug
    05-09-16 pplib.h: add <string.h> for standalone proto
    05-07-31 pplib.h: finally trust __STDC__ headers
    05-04-11 pplex.c: fix '"a" #s' catliteral + stringize bug
    05-03-29 pp.probe: check $? and stderr messages for pp:lineid
    05-02-20 probe.win32: handle /platformsdk mount
    05-01-11 ppargs.c: fix -I-S docs
    	 ppinput.c: ppproto() only for COMPATIBILITY or PLUSPLUS
    04-10-22 ppproto.c: handle `type var[x][y]' arg prototype
    04-10-01 pplex.c: really fix directive hidden newline logic
    04-08-31 pplex.c: fix directive hidden newline logic
    	 ppcall.c: fix '(' peek bug that missed the MARK
    04-08-30 add pragma pp:pragmaflags PP_PRAGMAFLAGS, pp:system_header
    04-08-11 ppproto.c: intercept "#(define|undef) extern" for __(EX|IM)PORT__
    04-07-23 probe.win32: generalize #include dir order search
    04-07-22 ppsearch.c: access() => eaccess()
    04-05-20 ppproto.c: don't __PROTO__ `int fun __P((int));'
    04-04-15 probe.win32: sync up with uwin 2003-08-06 master -- oops
    04-04-01 pp.probe: add stdinclude usrinclude path cleanup
    04-02-29 ppproto.c: fix bug that skipped prototyped check during notices check
    	 ppproto.c: recognize `Copyright nn'
    04-02-14 ppproto.c: comment[0]==0 => no notice
    04-02-11 Makefile: fix %.yacc to handle cross-compile
    04-01-28 pp.h,pplib.h,ppop.c: add PP_RESET to restore original pp.symtab scope
    03-12-12 ppcall.c: missing macro actual warned but expanded
    03-11-12 ppexpr.c: fix premature #if expression token strip
    03-06-21 ppproto.c: fix T_INVALID ? splice bug that did 0?val => 0?vaL
    03-06-10 ppargs.c: add -D-d and -D-m
    	 ppargs.c: add gnu options { -dD -dM -imacros -include -lang-* -lint }
    03-05-19 pplex.c: fix stray SKIPMACRO bug
    03-05-18 ppcall.c: add SYM_FUNCTION '(' peek to avoid inappropriate ungetchr()
    03-04-30 pp:mapinclude hosted <std.h>="." will search only hosted dirs
    	 pp.probe: add pp:mapinclude probe for namespace incursions
    03-04-29 ignore()=>ppmapinclude(), add pp:mapinclude
    03-03-25 ppop.c: PP_RESERVED now deletes old symbol before redef with lex value
    03-03-14 pp.probe: fix the #include_next probe
    03-02-28 ppsearch.c: fix -MM bug that missed prefix include hosted mark
    03-02-18 pplex.c: handle COMPATIBILITY
    03-01-23 probe.win32: mingw32 tweaks
    02-12-17 ppargs.c: document -I-!
    02-12-06 -I- pp:noprefix otherwise pp:prefix default
    02-11-29 probe.win32: added __INTSIZE, drop dm pp:noallmultiple
    02-11-26 pp.def: add STDC_HOSTED
    	 probe.win32: add C95 and C99 STDC predefined macros
    02-10-30 ppfsm.h: add boundary check to IDSTATE()
    02-10-18 probe.win32: update for mingw
    02-10-15 ppsearch.c: if PLUSPLUS && not found && no suffix then try with .h
    02-10-10 pplex.c: fix does not end with `newline' bugs
    02-10-01 ppop.c,ppargs.c: -I-I => -I-M with proper docs; -I-I for PP_IGNORE
    02-09-21 pp.probe: add pp:nocatliteral test
    02-09-10 pp.tab: add pp:passthrough to match -D-P docs
    02-08-30 probe.win32: fix for borland cc -E
    02-08-22 ppexpr.c: add __SOURCE__ and #match(string,pattern)
    02-06-25 ppproto.c: fix pragma search bug that stopped after 8 comment lines
    02-06-11 ppsearch.c: fix ... next include search to skip *all* intermediates
    02-05-28 probe.win32: updates for { mingw }
    	 ppsearch.c: don't use inherited prefix for <...> -- duh
    02-05-24 ppcontrol.c: simplify getline() space canonicalization
    	 probe.win32: updates for { digital-mars borland lcc }
    02-05-20 ppcontrol.c: update to use regsubcomp(),regsubexec()
    02-05-09 ppcontrol.c: inhibit `EOF in directive': newline warning will catch it
    	 pplex.c: inhibit `newline in character constant' for hosted directives
    02-05-06 probe.win32: add more win32 compilers
    02-04-15 probe.win32: handle long long unsigned int
    02-04-12 ppproto.c: fix NOTICED check
    02-03-15 ppproto.c: fix cpp pp:compatibility double line sync memory fault
    02-03-11 pplex.c: add pp:modern to emit \a \v instead of octal forms
    02-02-14 ppargs.c: fix -D or -U as last arg core dump
    02-01-24 pplib.h: use vmalloc(Vmregion) if _std_malloc
    02-01-23 probe.win32: add more msvc predefined macro candidates
    02-01-14 ppproto.c: #pragma prototyped noticed -- has notice comment
    02-01-10 ppproto.c: fix PROTO_FORCE|PROTO_PASS bug that disabled PROTO_FORCE
    02-01-08 pplex.c: fix HEADEREXPAND|HEADEREXPANDALL logic
    01-11-22 pplex.c: add pp:headerexpandall for gcc vs. msvc <...> expand diff
    	 pp.probe: add pp:headerexpandall test
    01-10-20 pplex.c: fix pp:splicespace inside "..."
    01-09-11 ppinput.c: use pathnative() for native fs representation
    01-08-31 pp.probe: handle -Dmacro(args)=value
    01-08-11 ppcontrol: fix ... and __VAR_ARGS__ for C99
    	 ppsearch: fix SEARCH_NEXT bug that skipped the include stack
    01-08-06 ppproto: preserve #! first line for # comments
    01-07-17 gentab.sh: fix ksh test to omit pdksh (typeset -u fails)
    01-06-26 ppproto.c: fix another buffer boundary bug that didn't preserve OTHER
    01-06-06 ppsearch.c: list PP_FILEDEPS headers once
    01-06-01 pp.h,ppop.c,ppsearch.c: allow multiple PP_FILEDEPS (-M)
    01-05-24 pp.probe: fix pp:hostedtransition probe: only suncc can __STDC__==1?
    01-04-25 pp.probe: split macro probe files for compilers that have #line limits
    01-04-19 pp.h,pplex.c,ppproto.c: fix { \a \E \v } EBCDIC translations
    01-04-16 pp.tab: add pp:splicespace for mvs jcl decks -- the 60's live on
    01-04-13 ppbuiltin: add __FUNCTION__ cache for functions that span the buffer
    01-03-08 pp.tab,ppbuiltin,ppcontrol,probe: add pp:hostedtransition
    01-02-22 pp.tab,ppfsm,pplex,pp.probe,probe.win32: add pp:zeof for ^Z => EOF
    01-02-14 ppcall.c: fix macro(tuple*) bug that truncated macro arg expand buffer
    	 pplex.c: fix # inside pp:pragmaexpand
    	 gentab.sh: change ksh test for openbsd /bin/sh
    	 ppproto.c: fix buffer boundary bug that lost call nesting
    	 ppproto.c: add realloc prototype and memcpy=>memcopy strcpy=>strcopy
    01-02-09 ppsearch.c: fix another pp.include null dereference
    01-02-07 ppcall.c: fix stack inequality checks
    	 ppcall.c: handle trailing  in macro args
    01-02-06 fix readonly buffer write (cpp test 07:2873)
    01-02-04 fix -M* to properly handle .cxx .cpp .C input
    	 fix IN_BUFFER pop bug that did not reset the token pointer
    01-01-01 pp:headerexpand: space ok if not IN_MACRO
    	 ppcall: hide if IN_FILE|IN_MACRO|IN_EXPAND
    	 pplex: don't complain about ^L or ^Z as last char in file
    	 ppsearch: fix #include <.../foo.h> loop
    	 ppcontrol: manulally increment IN_RESCAN error_info.line
    00-12-25 add EXPOSE to expose hidden macros (for #import ...)
    	 probe.win32: add cc path *and* args to first line to avoid hash clash
    	 pp.probe: filter out invalid symbols for predefined macro scan, duh
    	 pp:headerexpand: limit expansion to IN_MACRO
    00-10-31 __STDC__==0 if HOSTED && _UWIN
    00-10-26 pplib.h: change SEEK_SET to O_RDONLY for aix
    00-10-17 pp.probe: __IMPORT__ => __STDPP__IMPORT__
    00-09-18 add __FUNCTION__=#(FUNCTION), #define <a b> c
    	 pp.probe: add probe_longlong
    	 probe.win32: add #define <long long>
    00-09-11 add pp:noproto (NOPROTO pp.option) to disable ppproto()
    00-09-01 ppproto: fix buffer slide bug
    00-08-11 pplb.h: check for <unistd.h> already included for PROTOMAIN
    	 pragma: add pp:pragmaexpand to expand pragma args
    	 ppcontrol: always disable pp:* pragma expansion
    	 ppcall: fix pp:hide buffer clash
    00-06-01 pplex: fix "" and ""
    00-05-22 ppsearch: fix uwin #include <C:/foo/bar.h>
    00-05-16 probe.win32: update reserved word list
    00-05-09 ppcontrol: fix C++ macro >+> invalid fuse
    	 ppcontrol: 'macro' expansion only for COMPATIBILITY | TRANSITION
    	 c9x: up to date with proposed standard
    00-04-01 pp.tab: add allpossible and ALLPOSSIBLE
    	 ppmacref: fix ref inside literal catenation
    00-02-14 pppopen(): general comments with "bme" (begin middle end) string
    00-01-11 pp.probe: hosttype now in C.probe
    99-11-19 is[a-z]*( => ppis[a-z]*(
    	 ppproto: "..." [A-Z_]+ "..." ignores [A-Z_]+ if PROTOMAIN
    99-11-11 ppproto: use astlicense()
    99-10-31 ppproto: add PROTO_SHARP, update license parse
    	 pplex: fix some MARK bugs seen by #define X "A B <C@D>"
    99-10-01 add pp:stringsplit for "......" => "..."..."
    	 add pp:lineid to match PP_LINEID
    99-07-17 ppbuiltin: fix getline() canon spacing for numbers
    	 ppsearch: fix FILEDEPS not found  print
    	 pplex: fix spurious FILEDEPS '.' empty character constant message
    	 ppargs: fix usage error call and error_info.id default value
    	 ppproto: fix up copyright notice for ksh93 style .author file
    	 ppproto: check if notice text if file path
    99-06-02 ppproto: add __MANGLE_package_DATA__ & __MANGLE_package_FUNC__
    99-05-26 ppcontrol: all pragmas but prototyped need pp:
    99-05-25 ppargs: long options
    99-05-22 ppproto: changes for full ast vs. PROTO_STANDALONE
    99-05-09 ppinput: add #pragma pp:native and (pp.option&NATIVE) for native paths
    99-04-22 ppproto: finish type=open notice
    99-02-11 #define __STDC__ #(STDC); demote __STDC__ to 0 for HOSTED (thanks sun)
    99-02-04 pplex: joined strings separated by n
    99-01-11 probe.win32: add _UWIN predef
    98-10-20 pplex: a few more (HOSTED|RELAX) checks
    	 -D:preserve throws a bunch of stuff -- great for imake (yuk)
    98-05-11 pplex: fix "..." off by one line count
    98-02-14 ppcontrol: fix HEADEREXPAND missing NUL
    98-01-23 ppproto: add _GNUC_ to _WIN32 check
    	 ppfsm: don't optimize for hp.pa
    97-11-11 ppcontrol: fix recursive use of pp.hdrbuf for HEADEREXPAND
    97-10-31 ppmacref,pp.h: add ppmacref sum arg -- some parts assumed it!
    97-10-01 pplex: loosen HEADEREXPAND check
    97-08-11 pplex: fix COMPILE pplex() bug that did not reset NEWLINE for S_MACRO
    	 pplex: PP_PRESERVE does not pp.pragma <token> ... # <pragma-stuff>
    	 pp.def: add UWIN
    	 ppcall: fix macro actual arg error checks
    97-07-17 ppproto.c: C++ __INLINE__ prefixed with extern __MANGLE__
    	 ppop.c: fix PP_RESERVED T_* lookup
    97-05-09 pp.def: add MVS :architecture:
    	 ppfsm.c: change C_* pseudo codes to not clash with ebcdic
    	 pp.probe: fix stdc.$src sed script
    97-04-01 ppcontrol.c: fix tokop() for PP_RESERVED
    96-12-25 add ms #@ charize to complement # stringize
    	 pp.probe now detects preincludes
    	 ppproto: allow #ifdef'd function definions before {
    	 ppproto: NoN() is not a function
    	 pp.key,ppkey.h: add int64
    	 ppargs.c: fix -M{DGM}*
    96-12-06 add pp:headerexpand for ms that expands macros in expanded <...>
    96-10-31 a few more line sync tweaks for EDG C++
    96-10-11 fix pp:macref off by one for standalone pp (big suprise)
    96-10-01 -D:macref -D-L -> #line (n-2)pragma pp:macref ...
    96-08-11 fix transition macro expansion
    	 compatibility
    96-02-29 use <hashkey.h>
    	 drop ungetchr() in ppcall that modified macro values
    	 tighten the DEBUG PANIC case in ppcontrol.c
    	 unify #architecture() and #machine() probe
    	 add POSIX,WIN32,X86 to pp.sym
    	 tweak pp.probe
    96-02-14 pp:noallmultiple works on hosted files too
    	 fix #define /* EOF loop
    96-01-31 fix ## as arg to stringize macro to have ## value, not #
    	 add nonstopux and SYSTYPE_SVR4 to pp.def
    96-01-01 AT&T Research now
    	 fix catliteral line sync line number bug
    	 ppproto() converts non-directive <num>u to (unsigned)<num>
    	 switch to <regex.h>
    95-10-31 fix PP_COMPILE PP_TRANSITION bug that didn't allow space before #
    	 fix PP_TRANSITION wline in definition complaint
    95-10-11 fix ppproto() PROTO_PLUSPLUS bug
    	 change ignored pp.incref PP_SYNC_POP to PP_SYNC_IGNORE
    	 add PP_PEDANTIC to handle gnu oversights (can't beat em ...)
    	 add memfatal() call
    	 relax newline in quote semantics
    	 proto inline -> __INLINE__
    	 fix __INLINE__ proto def for __GCC__>=2
    95-08-11 pp:preserve for easel (aka IFS) and imake
    	 fix pp:reguard ## macro output
    	 fix MARK PANIC with CATLITERAL
    	 PP_INPUT *.(s|S|as|AS|asm|ASM) implies pp:nocatliteral pp:spaceout
    	 ppargs() can't use isid() until after FSM_INIT
    	 -D#... for assert, -D%... for directives
    	 __STRICT_ANSI__ && __GNUC__ requires -pedantic for PP_STRICT
    	 #include <.../x> for include_next
    95-05-09 fix tokop() bug that concatenated adjacent strings
    	 don't concatenate directive string literals in proto
    	 split pp.mode into pp.mode and pp.option
    	 restrict pp.probe hostinfo output to the first token
    	 fix EOB/EOF pplex() nonterminating loop
    	 unused var cleanup
    	 add pp:reguard to emit #define and #undef (for C++ templates)
    	 add a few ppproto '\r's for NT
    	 fix T_BUILTIN ppsymbol -> ppsymkey pun
    	 fix pp:stringspan `#define x "' hang
    95-04-01 fix pp:hide for macros defined before the hide
    	 fix pp:map getline space canonicalization
    	 fix proto `<digits>[uU]'
    	 proto does // comments by default (fixes bug introduced 07/17/94)
    	 proto does "..." "..." string literal concatenation
    	 spice up proto copyright comments for nonexclusive license
    	 add hosttype assertion
    	 fix proto `typedef type fun(args)'
    	 proto copyright finishing touches
    	 fix overzealous "empty character constant" message
    95-02-14 pp:nopredefined probe info defines are now pp:builtin
    	 clean up pp:hosted conflicts
    	 tighten up unknown directive warning
    	 PP_INPUT *.(s|as|AS|asm|ASM) implies pp:nocatliteral pp:spaceout
    	 change newof(0,char,n,0) to newof(0,char,0,n) if 0 init not needed
    	 don't emit unkown directives inside #if 0 ... #endif
    95-01-19 *strict-* does not force STRICT
    	 token##null-last-variadic-arg consumes token (to match gcc)
    	 variadic actuals call be one less than arity (to match gcc)
    	 fix PLUSPLUS digraph bug that lost comment state
    	 tighten up PLUSPLUS //, /*, */ interaction warnings
    	 macro formals in "..." for COMPATIBILITY|TRANSITION
    	 macro formals in '...' for COMPATIBILITY|TRANSITION|!STRICT
    	 STRINGSPAN allows ' in '... too
    	 add PP_SYNC_* flags for pp.incref arg 3
    	 add PP_SYNC_INSERT for invented file references
    	 fix C++ fsm bug that popped out of comment in // /* */ ...
    	 PP_INPUT *.(s|S|asm|ASM) implies pp:nocatliteral pp:spaceout
    95-01-01 avoid string literal concatenation in pp.probe #if #predicate() tests
    	 fix pplib.h memcpy,strncmp PROTOMAIN prototypes (its a nop tho)
    94-11-11 fix readonly memory reference in refill
    	 add C++ digraphs (digraph = --trigraph)
    	 add C++ T_EXPLICIT -- did dos take over C++?
    	 fix improper ppproto() C++ __PARAM__ expansion
    94-11-01 allow #include string header arg concatenation (yes, its not ansi)
    	 #macdef macros are recursive
    94-10-01 fix C++ } loop in ppfsm/refill
    	 T_NOISES consumes symbol and optional paren group
    	 __builtin_* T_NOISES by default
    	 fix "..." "...MARK..." join
    	 fix STANDALONE */*comment*/
    94-09-11 fix pp.probe cp+strip with chmod u+w
    94-08-11 add -I<vdb-archive> to handle pax -x ppar header archives
    	 fix -D-Q header checkpoints
    	 add `pp:chop prefix' to chop prefix/ from include prefix/*/*
    	 add pp:keyargs for key=value macro formals/actuals (not for C!)
    94-06-01 fix ppcontrol/tokop() that botched pp:id, etc.
    	 add pp:plussplice to handle cfront // \<newline> ignorance
    	 inhibit trigraph conversion for pp:compatibility, duh
    	 new C++ keywords enabled by pp:keyword
    	 proto: int fun xxx((yyy)) is macro call, not decl
    	 fix !ALLMULTIPLE pp:load to SKIP between duplicated line syncs
    	 fix PP_DUMP for pp:noallmultiple, optimize pp:load format
    	 fix CPP CACHEOUTX() buffer boundary bug
    94-04-01 drop warnings for -X*
    	 fix ppproto() %% in comment bug for yacc proto
    	 PP_COMMENT now truncates comments to MAXTOKEN-4
    94-03-01 no pp:truncate for #pragma pp:macref
    94-01-01 fix STANDALONE+PP_TRUNCATE fsm macro bug
    	 drop __VOID__ from ppproto.c
    93-12-01 release
    93-11-11 fix PP_COMPILE+PP_TRUNCATE=8 bug for continue,unsigned,etc.
    	 add PP_LINEBASE for compilers that botch long line sync paths
    	 fix #if unsigned promotions
    	 aggressive interactive line splice flush
    	 fix #else inside multiline null dereference
    	 fix "..." newline space # COMPATIBILITY CATLITERAL bug
    	 fix m(a)b compatibility token pasting [cpp/test/ess.01.c]
    	 fix nested @X mark bug [cpp/test/net.02.c]
    93-10-11 add FSM_COMPATIBILITY for floating point hex -- yo ansi, anybody home
    	 add #else if|ifdef|ifndef for COMPATIBILITY but with warning
    	 drop PP_HOSTED, add ppop(PP_CDIR|PP_HOSTED,"-",n), -D-I for pp:cdir
    93-10-01 add pp:opspace to tokenize <binop><space>= to <binop>=
    93-08-11 drop ancient BCD constant (`...`) detection -- wake up cfront
    	 fix PP_TRUNCATE macro fsm bug that missed some expansions
    	 fix stringize bug that choked if space preceded #
    	 fix <function-like-macro> <identifier> bug that omitted space
    93-07-17 minor transition mode fix for string concatenation
    	 fix standalone macdef line sync buffer bug
    	 pp:noline turns off linesync, pp:line restores it
    93-06-22 add pp:prefix to control prefix include compatibility
    93-04-01 use probe_verbose in predefined symbol probe
    93-03-11 close fd after last file block read -- relaxes open fd limit
    	 remove pp.control nesting limit
    	 add `#rename old new'
    	 __STDC__ not defined for plusplus (until they figure it out)
    93-01-22 fix ansi macro args recursion bug
    93-01-11 fix '\377'<0 for signed char compilers
    	 add RELAX for __STDPP__directive directives
    92-12-25 fix #include guard test that omitted IN_tokens for CPP=1
    92-12-11 fix pp:truncate for STANDALONE and COMPILE
    	 fix pp:allmultiple again!
    92-11-30 add pp:final, pp:initial
    	 add __STDPP__directive and #(directive) as ??= alternative
    	 relax obsolete macro expand warning for _xxx||xxx
    	 retain quoted wline when PP_LINEID != ""
    	 fix CATLITERAL hidden newline line sync
    92-11-11 fix COMPATIBILITY EOF in macro arg list and # in macro body
    	 fix [?\] on 4K buffer boundary bug that lost next refill()
    	 fix ppproto bug that botched -ih comments
    92-10-31 fix standalone -C bug that duplicated output buffer
    	 add pp:stringspan to handle gnu "<newline>" extension
    92-10-12 fix T_X_GROUP asm bug
    	 allow `#define a "b' pp:compatibility hack
    92-08-11 add PP_PLUSCOMMENT, pp:pluscomment probe
    	 add #(default v,d) #(empty v) #(iterate m,...)
    	 compatibility allows #define f(a,,b) for 2 args!
    	 probe now handles gcc -E -g3 to get gnu predefines
    92-07-17 fix pp:multiple again, fix ppproto() out of bounds
    	 PP_STANDARD is always PP_CDIR and PP_HOSTED
    92-07-11 add #import and #include_next probes
    92-06-11 fix bug where comments dissappeared after disabled macro in standalone
    	 COMPATIBILITY macro recursion bug fix may cause some to be missed
    	 PP_MACREF or -D-L- ignores #line until #line with file arg
    92-06-01 add pp:ignore
    	 fix probe of stdpp to handle -I[-+][CH]
    92-05-11 add pp:hide <id>, pp:note <id>, noticed(<id>), exists(<...>)
    	 add defined(__STDPP__<pragma>) feature test
    	 add PP_CDIR, pp:cdir for C++ extern "C" { ... } include wrapping
    	 pp.probe now handles predefines with values other than 1
    92-04-11 add inverse proto (K&R -> prototype) to ppproto
    92-04-01 release
    92-02-29 #include <...> inside <xxx.h> gets next xxx.h on -I list
    	 non-libpp generated symbols containing ' ' are not truncated
    92-02-11 conversion to new lexer brings time close to reiser (esp. w/gcc -O)
    	 combine standalone (ppcpp) tokenizing (pplex) and proto lex tables
    	 recode ppproto for standalone operation via PROTOMAIN
    	 add PP_NOHASH for PP_COMPILE front ends that rehash T_ID anyway
    	 delete PP_NOQUOTE
    	 delete #option(strict) test in probe in favor of non-hosted warnings
    	 add unsigned to ppexpr()
    91-10-11 add pp:truncate <len> for non-flexname compilers
    91-09-11 fix ppproto aggression on f(*y); -> f __PROTO__((*y));
    91-08-11 switch seterror() to error_info.*
    	 add pp:linefile to force file name in line sync
    	 add pp:spaceout for probed compilers that don't allow pp override
    91-06-11 fix ignored -I/usr/include bug
    91-04-11 set SYM_INIT in pp.macref for -U on cmd line
    91-01-31 replace pp:pragma and pp:directive with pp:map
    	 replace #assert and #unassert with #define #... and #undef #...
    	 #assert and #unassert compatibility retained via pp:map
    	 replace -D#directive with -D%directive (because of #assert change)
    	 add pp:splicecat for \<newline> #define token paste
    	 fix \<newline> bug that added space in COMPATIBILITY quoted strings
    90-12-11 fix #pragma pp:multiple
    90-11-11 generalize handling of non-standard keywords for COMPILE
    	 replace pp:identifier/PP_IDENTIFIER with pp:reserved/PP_RESERVED
    	 pp*keys* -> ppkey
    	 add PP_NOISE
    	 (gag) handle msdos paths by changing  to / and retrying on failure
    	 (gag) handle msdos :> operator by pplex() '+' return
    	 add #pragma prototyped and ppproto.c for prototype conversion
    	 add unsigned long arg to PP_MACREF for hashed macro arity+value
    90-10-11 0f is not a float constant
    	 change -I-M to -I-I, file just lists include files to be ignored
    	 fix ppprobe for __STDC__==0 hybrids
    	 add pp.flags and PP_[a-z0-9]+ for exported state info
    90-10-01 fix standalone ppmacref for directives
    	 add `try' to C++ keywords
    	 fine tune a few COMPILE error messages
    	 privatize pp.h
    90-08-11 use opt_again in cmdargs() option parsers
    	 (gag) add pp:macref macro reference pragma to handle CC preprocessors
    	 (gag) add pp:spaceout to handle ansi + asm hacks
    90-07-17 remove spaces from macdef line sync (blew sun cc)
    90-06-11 add internal ppsymkey to avoid ppsymbol.value pun for SYM_KEYWORD
    90-05-01 fix catliteral bug of `"..." << ' -> `"..." <='
    90-04-01 fix `ifndef-define-endif' include wrapper test
    90-03-27 add setpreroot() to ppop() [ sleazy but well hidden ]
    90-03-22 pp.macref called for all undef's
    90-03-20 add <prefix>cpp checks to ppprobe
    	 add pp:hostdir before pp:include in ppprobe
    	 fix PP_HOSTDIR op with no dir arg
    90-03-15 System V CCS compatibility update
    	 add PP_ASSERT
    	 add -A for PP_ASSERT and -YI,dir for PP_STANDARD
    	 add ppincref.c and -H to use it
    	 -Xa defines __STDC__ to 0 (gak)
    90-03-09 duplicate macro formals cause level 2 error
    90-03-01 add #(ARGC) for (variadic) macro arg count
    90-02-11 fix line sync number bug in pppush()
    89-12-01 ignore leading = in pragma map for old pragma compatibility
    	 check for NEWLINE on first macdef line sync
    89-11-11 add -1 arg to pp.incref -- include skipped
    	 STRICT 0x7e-macro is T_INVALID per standard
    89-10-31 put all C keys in ppckeys.c, C++ keys in pppkeys.c
    	 add pp:identifier pragma to selectively undo PP_COMPILE keywords
    	 add tokop() to ppcontrol to support multi-valued pragmas
    	 add #ifndef...#endif include optimization for STRICT
    89-10-27 use REF_NORMAL, REF_IF, REF_UNDEF for pp.macref arg2
    89-10-17 fix c(x)y compatibility pasting bug
    	 #line 1 "f" now marks "f" included
    89-10-11 enable -I. during initialization
    89-10-01 inhibit pp:linetype syncs for top level #line directives
    	 ----- see HISTORY -----

### libcodex changes

    05-09-25 add '^' equivalent to '|'
    04-02-14 codex.c: SFDCNEXT() and SFDCPREV() now provided by <sfio_t.h>
    04-01-11 codex.c: top level composition parse, handle CODEX_INVERT
    04-01-10 codex.c: use CODEX_FLUSH to disable SF_SYNC before initf
    04-01-09 prepare codex.h for possible { decodef encodef } addition
    04-01-04 codexcmp.c: fix return value to match strcmp(3)
    03-12-30 codexmeth.c: case-sensitive match on qualified name
    03-12-26 add CODEX_OPTIONS='trace=method-name-pattern debug'
    03-12-25 codex.c: pop intermediate disciplines on error
    03-12-22 add "RETAIN" option for CODEX_RETAIN
    	 add "SIZE=size" and alternative codexsize() for expected output size
    03-12-18 add to ast -- still working on relationship with { -lvcodex -lz -lbz }
    03-12-16 codexlib.c: add cache to codex()
    03-12-15 { rot13 qp uu iconv } working
    03-12-11 first code

|  | February 15, 2006