Tue Aug 31 20:32:54 1993  Simon J. Gerraty  (sjg@zen.void.oz.au)

	* patch from meulenbr@prl.phil to avoid problem in findcom().

Tue Jun  1 23:36:36 1993  Simon J. Gerraty  (sjg@zen.void.oz.au)

	* Quick hack to "handle" multi-line prompts better.
	While in x_vi or x_emacs we use only the last line of the prompt.

Tue Jun  1 20:52:04 1993  Devetir Unix section <sgccdux@citecuc.citec.oz.au>

	* Serveral bug fixes from: Devetir Unix section 
	<sgccdux@citecuc.citec.oz.au>

	Sorry for the delay in these, but they were stuck in transit
	because zen was dead for nearly 3 months!  --sjg

	1) In history.c:hist_init(), an extra file descriptor to the
	history file is created which can remain open to the old history
	file when the history needs shrinking.  Thus, the old history file
	survives with no name, and caused me trouble under 386BSD when
	shutting down suddenly (fsck had to clean it up and have another
	re-boot). 

	2) In jobs.c:exchild() changed order of setpgid() and tcsetpgrp()
	as 386bsd at least does not allow tcsetpgrp() to an unused
	process group.

	3) bug in jobs.c:j_reapchld(), waitpid() can return 0 if there
	are no children, and even though there was code there to exit the
	loop on pid == 0, the variable sigchld_caught was not being set to
	0, so j_reapchld() would be continually called from j_waitj()
	wasting considerable cpu time. 

	4) In jobs.c:j_resume(), fg of a job that has exited, but not yet
	been flushed from pdksh's list of jobs caused the controlling
	terminal's process group to be stuffed up, and pdksh to exit, on
	some machines. 


Sat May 22 21:58:49 1993  Simon J. Gerraty  (sjg@zen.void.oz.au)

	* mail.c, expr.c: bug fixes from: Carsten Heyl
	<ch@jenny.informatik.uni-dortmund.de> 

	* eval.c: bug fix from: Peter Collinson <pc@hillside.co.uk>


Sat May  8 15:48:16 1993  Simon J. Gerraty  (sjg@zen.void.oz.au)

	* Ported to 386bsd (new base system :-), only sh directory
	involved though.  This mainly involved re-arranging some #if's so
	that if _POSIX_TERM is defined it will take precedence over _BSD

Sat Dec  5 23:54:40 1992  Simon J. Gerraty  (sjg@zen)

	* finally fixed the fd leakage that caused pipes to not terminate
	immediately.

Sat Nov 28 23:01:38 1992  Simon J. Gerraty  (sjg@zen)

	* Makefile: added install target

Wed Nov 25 09:10:11 1992  Simon J. Gerraty  (sjg@zen)

	* c_cd(c_ksh.c): fixed bug causing cd ., cd .. to look at $CDPATH.

Thu Nov 19 23:32:42 1992  Simon J. Gerraty  (sjg@zen)

	* For now bind emacs mode complete-list to ESC=

Tue Sep 15 15:24:38 1992  Simon J. Gerraty  (sjg@zen)

	* main.c: call init_editmode() between processing .profile and
	.kshrc so that edit mode can be explicitly set in .kshrc
	regardless of FCEDIT, EDITOR and VISUAL values.

Tue Sep 15 15:08:06 1992  Philippe Michel (michel@thomson-lcr.fr) 

	* main.c: fixed bug in command line argument processing.

Fri Aug 21 15:24:37 1992  Bruce Momjian  (root%candle.uucp@bts.com)

	* exec.c: replace all calls of execute(tree, 0) with 
	execute(tree, flags & XXWHL) to ensure it is passed to children. 

Thu Aug 20 23:18:45 1992  Simon J. Gerraty  (sjg@zen)

	* fixed bug in complex_history: histsize not initialized before
	call to alloc().

Thu Aug 13 00:00:42 1992  Simon J. Gerraty  (sjg@zen)

	* setstr(), varsub(): be robust when given dud args.

Wed Aug 12 23:56:29 1992  Simon J. Gerraty  (sjg@zen)

	* Fixed build problem when COMPLEX_HISTORY is not defined.
	* don't make COMPLETE_LIST the default, add 
		bind '^[^['=complete-list
	in .kshrc if desired.


Mon Aug  3 22:41:17 1992  Simon J. Gerraty  (sjg@zen)

	* emacs.c: correctly bind <ESC><erase>.
	* var.c: treat COLUMNS and FCEDIT as special.

Sat Aug  1 17:17:02 1992  Simon J. Gerraty  (sjg@zen)

	* Incorporated massive contribution from Peter Collinson
	includes new features (refer to ../Changes.pc) and support for
	BSDI's BSD/386.

	* emacs.c: new command complete-list provided by
	Neil.Smithline@eng.sun.com this nicer than the standard ksh
	file completion.  Define COMPLETE_LIST to bind this to <ESC><ESC>
	by default.

Sat May 30 15:44:56 1992  Simon J. Gerraty  (sjg@zen)

	* added flag XXWHL in tree.h, used by execute() when calling
	exchild() to indicate that stdin should not be invalidated.  This
	corrects handling of:  
		 ls | while read f; do ls -l $f; done

	Thanks to Bruce Momjian for tracking down the fault.

Tue May 12 19:23:17 1992  Simon J. Gerraty  (sjg@zen)

	* Fix bug in init_editmode() if EMACS and VI are not both defined.

Sun May  3 17:47:54 1992  Simon J. Gerraty  (sjg@zen)

	* sigact.c:  allow force build if USE_* defined.
	* main.c: call init_editmode() _after_ processing /etc/profile.
	* jobs.c: ensure SA_RESTART is defined.

Sat Apr 25 00:20:51 1992  Simon J. Gerraty  (sjg@zen)

	* Implemented a simple history file.
	The default file is "$HOME/.pdksh_hist" but can be changed by
	setting HISTFILE in any of /etc/profile,.profile or .kshrc.
	The format is trivial - one line per history item.  
	You can creat a set history file, by making it read-only.
	History is only saved during wrap-up and only if the file is
	writeable.  NOTE: if writeable the file is OVERWRITTEN.

Fri Apr 24 22:22:04 1992  Simon J Gerraty  (sjg@zen)

	* sigact.c: New file.
	An implementation of sigaction() and freinds, which simply
	interfaces to BSD's setsigmask() et al, BSD4.1's setsig() or plain
	old signal(2).  It attempts to use the most useful available.
	If it thinks the system really has sigaction() it compiles to
	noting, and its header sigact.h does nothing.
	At present all use of sigaction is bounded by USE_SIGACT, if/when
	this approach appears to work, the alternatives will be withdrawn.

Fri Apr 24 10:42:40 1992  Simon J Gerraty  (sjg@taureau)

	* Added support for sigaction and friends!, turns out sigset() 
	et al just don't handle job control.  Define USE_SIGACT if you
	have sigaction().  Job control now works on this System V machine
	(Bull DPX/2).

	* getsc_(lex.c), x_getc(edit.c):  Added goto's! to allow the
	read() calls to be retried (on systems that don't do it
	automatically) if the read() was interrupted by a SIGCHLD
	(sigchld_caught > 0).  This was the cause of the problem with an
	async child terminating the shell on System V.

Wed Apr 22 14:57:01 1992  Simon J Gerraty  (sjg@taureau)

	* exchild(jobs.c): block SIGCHLD when fork()ing, until safe to
	receive.

	* Added support? for sigset() and friends.  Allow JOBS to work on
	System V machines.  This does NOT work right yet.
	With JOBS defined, an async process terminates the shell when it
	(the child) exits, and ^Z does nothing!  

Tue Apr 21 15:18:08 1992  Simon J. Gerraty  (sjg@sun0)

	* removed const qualifyer from setctypes() 1st arg, as gcc-2.1
	generates incorrect code for this function.  This is a temperary
	hack until gcc is fixed.

	* do not install std/stdc/stdarg.h in std/h, any compiler that
	will use stdarg.h should have one.

Sun Apr 19 20:16:32 1992  Simon J. Gerraty  (sjg@zen)

	* added support of stdargs to tree.c and _fixed_ the use of
	varargs. 

Sat Apr 18 16:35:48 1992  Simon J. Gerraty  (sjg@zen)

	* x_read(edit.c): added logic to check $EDITOR etc.


Fri, 10 Jan 92 13:13:52	  Bullseye Software  (sumax!polari!bullseye)

	* alloc.c:afreeall() references memory it has already deallocated.

Wed, 1 Jan 92 20:03:55	Bert Gijsbers (a430mcb1@diamond.sara.nl)

	* expand(eval.c):  PS1='${PWD##/*/}[!]% ' prints also characters
	with ascii = 128 

	* main(main.c): Testing whether the first letter of argv[0] is a
	'-' does not work when ksh reads .kshrc.

Sun, 29 Dec 91 20:05:02  Bert Gijsbers (a430mcb1@diamond.sara.nl)

	* Support for Minix.

Wed, 11 Dec 91 12:41:31	Kees J. Bot (kjb@cs.vu.nl)

	* fixes for sun3 with 4.1.1

Wed, 4 Dec 91 15:53:43  Reg Quinton (reggers@julian.uwo.ca)

	* fixes for SGI

Mon Nov 25 12:36:42 1991  Simon J. Gerraty  (sjg at zen)

	* stdh.h:  make sure FD_CLEXEC is defined if we support F_SETFD.
	
	* emacs.c: Attempt to make alloc() of x_tab acceptible to more
	compilers.  Not 100% yet.
	
Sat Nov 23 14:31:44 1991  Simon J. Gerraty  (sjg at zen)

	* Improved fd_clexec handling for systems that don't have
	an F_SETFD fcntl().  The new arrangement will not blow up if an
	attempt is made to fd_clexec a fd above MAXFD (64 by default).
	main.c:main()  and io.c:savefd() now simply call
	exec.c:fd_clexec(). 

Fri Nov 22 11:24:57 1991  Simon J. Gerraty  (sjg at zen)

	* Since many people had problems using the headers and libraries
	in std/*, modified sh/* so that they can be compiled in the
	absence of std/*.  This requires putting in some fixes that I had
	left out from my 3.2 version.  Particularly, catering for systems
	that do not have F_SETFD.

	* exec.c:
	Added fd_clexec array for tracking fd's to close in child after
	fork().  This is avoid wasting fd's on systems that don't have
	F_SETFD.

	* jobs.c:
	Allow Sun's and perhaps other BSD systems to define WAIT_T to be
	union wait and thus use their native status handling for children.

	* The file sh/MACHINES now tracks systems the shell has been
	compiled on.


Sat Nov  9 14:57:30 1991  Simon J. Gerraty  (sjg at zen)

	* Release version 4.1 as a new base line.

Thu Nov  7 23:11:25 1991  Simon J. Gerraty  (sjg at zen)

	* John R MacMillan suppied a fix for a bug in yylex() that was the
	cause of several odd problems such as:
		$ foo=echo
		$ $foo bar
		bar: not found
		$ pwd
		$ /local/src/pdksh
		$ $foo bar
		bar
		$

Sun Sep 15 23:19:27 1991  Simon J. Gerraty  (sjg at zen)

	* emacs.c:
	Added function x_lastcp() which returns a pointer to that char in
	the edit buffer that will be the last displayed on the screen.
	Thus:

          cp = x_lastcp();
	  while (cp > xcp)
            x_bs(*--cp);
	
	Will correctly position the cursor on the screen (regardless of
	TABs etc in the buffer).  The previous method got out of sync if
	there were any TABs to display.

Wed Aug  7 11:26:55 1991  Simon J. Gerraty  (sjg at sun0)

	* jobs.c:
	The Sun SPARCstation 2 was proving extremely unreliable using ksh.
	After puting traces in jobs.c, it turns out the problem was
	multiple SIGCHLD events happening too quickly causing the handler
	to be interupted and thus not recognise the job that it had just
	reaped was one of its own.  Having done the waitpid(), but not
	adjusted the job table entry, j_waitj() would loop forever waiting
	for a job to finnish (that had already done so!)
	Solution was to have the SIGCHLD handler simply record the events
	by inrcrementing sigchld_caught.  The actual reaping is now done
	in a new funtion j_reapchld(), which does what the old signal
	handler did but blocks SIGCHLD while scanning the job table.
	j_waitj() calls j_reapchld() when sigchld_caught is non-zero.
	The SS2 is now much more reliable...

	* trace.c:
	Added my simple _TRACE facility (used to track the j_waitj
	problem).  Simply -DUSE_TRACE for it to have effect.  If USE_TRACE
	is undefined, calls to _TRACE() expand to while(0) which an
	optimizer will usually remove.  sh.h now includes trace.h

Mon Jun 10 10:27:14 1991  Simon J. Gerraty  (sjg at zen)

	* emacs.c:
	A couple of assignments (xbp = xbuf) were not migrated from the
	3.2 version.  Caused an anoying bug when retrieving history
	commands. 

Mon May 27 12:50:20 1991  Simon J. Gerraty  (sjg at sun0)

	* added fixes supplied by Mike Jetzer:
	These relate mainly to vi mode.  See Changes.mlj

	* c_sh.c c_exit():
	Modified behavior to not imediately exit if there are stopped
	jobs.  A subsequent exit will kill any jobs left and terminate the
	shell. 

Fri May 24 15:20:10 1991  Simon J. Gerraty  (sjg at sun0)

	* edit.h:
	Cleaned up prototypes.  Built shell on sun3.
	While gcc-1.39 builds the ksh ok on the 386i, on the sun3 jobs
	don't work correctly - any non-builtin command gets stopped and
	put into the background.  Had same problem with 3.2, using
	/usr/bin/cc works fine.

Thu May 23 13:45:20 1991  Simon J. Gerraty  (sjg at sun0)

	* migrated my 3.2 edit.c changes to the new shell.
	Affects edit.c, emacs.c
	Added edit.h which is now included by edit.c,emacs.c and vi.c
	
	* vi.c:
	Fixed handling of '!' in prompt by using pprompt() as in emacs.c

	* std/stdc/vprintf.c:
	Fixed bug in output of left '0' padded unsigned numbers was
	always padding with ' ' which left a space in ksh's temp file
	names.  This prevented fc -l from working.

Here is my 3.2 ChangeLog:
Fri Mar 22 16:50:14 1991  Simon J. Gerraty  (sjg at sun0)

	* edit.c:
	Added x_set_arg() and x_prev_histword().
	x_set_arg() handles 'ESC''0-9' type args which are used by word
	related commands.
	x_prev_histword() recovers the last (default) or sepcified arg
	word from the previous command line.  Bound to ESC. and ESC_ to be
	compatible with real ksh.

Tue Feb 26 14:16:17 1991 Simon J. Gerraty  (sjg at zen)

	* edit.c:
	Changes to handle editing of command lines longer than $COLUMNS in
	a manner compatible with real ksh.

Mon Feb 25 12:20:36 1991 Simon J. Gerraty  (sjg at sun0)

	* var.c,table.h:
	Implemented $RANDOM
	Some scripts use [ "$RANDOM" != "$RANDOM" ] to check for ksh. 

Wed Feb 20 12:20:36 1991 Simon J. Gerraty  (sjg at sun0)

	Changes so that shell will compile on sun386i.

	* exec.c,main.c,io.c:
	Handle the case where FD_CLEXEC isn't defined.

	* jobs.c:
	SunOS has its own ideas about job status etc.

	* tree.c:
	Fixed conflict between varargs and stdarg.




