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

This package is a superset of the following package: ast-ksh; you won't need this if you download ast-base. The software is covered by this license:

• http://www.research.att.com/sw/license/ast-open.html

A recent release change log is also included.

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

     vpath dir_2 dir_3

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

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 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 +

     export COSHELL=coshell
     export NPROC=8

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

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

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.

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

Most makefiles are just a few lines:

     :PACKAGE: X11
     
     xgame :: README xgame.6 xgame.h xgame.c xutil.c -lXaw -lXmu -lXt

     CCFLAGS = $(CC.PIC)
     
     ast 4.0 :LIBRARY: ast.c strmatch.c

To create a vdelta compressed base archive:

     tw | pax -w -f base -z -

     tw | pax -w -f delta -z base

     pax -r -f delta -z base

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

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

     #pragma prototyped

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.

All recorded changes follow.


ksh93 changes

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 handes 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 no
	  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 hexidecimal
	  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 .
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

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

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

01-02-06 proto.tst: add (finally)
99-11-19 add --license, --shell, --copy, --verbose
99-08-11 long options


bzip changes

01-01-01 bzip2.c: include bzlib.h first
99-01-01 package for ast


tests changes

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

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

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

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

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


msgcc changes

01-01-31 ignore ls generation errors
00-04-20 first release


nmake changes

01-02-02 makerules: bias package search to viewpath and make installroot
	 makerules: *.req can be down the view
01-01-01 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 \\n 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.mk: generalize $(CC.DIALECT) option passing
	 metarule: case sensitive match for patterns matching `[-+]*'
	 archive.c,object.c: (Sfoff_t) for K&R compilers
	 MAKEFILES=Nmakefile:nmakefile:Makefile:makefile -- thanks bill
	 MAKEARGS=Nmakeargs:nmakeargs:Makeargs:makeargs -- thanks again bill
	 probe: add CC.LD.RUNPATH
	 Makerules.mk: add LDRUNPATH and CC.LD.RUNPATH support
	 Makerules.mk: tone down PTR prereq scan
	 .GETCONF: first builtin function
96-11-28 ccmaps .mo for ascii/ebcdic compatibility
96-10-31 outstanding bug reports addressed
	 :LIBRARY: defines _BLD_<lib>==1
	 use PATH=$(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

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

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

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 \\n splice
	 add fmtesc() to complement stresc()
	 add LS_NUMBER to fmtls()
	 drop spurious optusage() ' '


libcmd changes

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

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

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

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)


libuu changes

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


libbz changes

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

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

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

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

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 no 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 "\\U" and "\\u"
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 "...\\n..." => "..."..."
	 add pp:lineid to match PP_LINEID
99-07-17 ppbuiltin: fix getline() canon spacing for numbers
	 ppsearch: fix FILEDEPS not found \\n 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 -----