changelog

一个开放源代码的 AT&T 的 Korn Shell 的复制品, 支持大多数 ksh89 的特性。

	  changed SS_RESTORE_CURR to SS_RESTORE_ORIG.

	* edit.c(x_sigwinch): new function.
	* edit.c(x_init): set up signal handler for SIGWINCH; moved
	  code to get window size into x_sigwinch(); call x_sigwinch().
	* emacs.c(xx_cols): new variable.
	* emacs.c(x_init): set xx_cols_to x_cols; change all uses of x_cols
	  to xx_cols.
	* vi.c(display): when displaying morec, changed x_cols-2 to
	  pwidth+winwidth+1.

Fri Aug  9 12:49:00 NDT 1996 Michael Rendell ([e-mail])

	* table.h(FKSH): new define.
	* tree.h(struct op): put evalflags into new union u, added ksh_func
	  to union; changed all uses of evalflags.
	* syn.c(function_body): set u.ksh_func.
	* exec.c(execute): changed define() arg to t (was t->left).
	* exec.c(define): copy t->left (was t); set FKSH in flag if is
	  a ksh function.
	* exec.c(comexec): don't keep assignments for x() style functions.
	* exec.c(comexec: case CFUNC: set kshname ($0) for ksh style functions
	  only (was FPOSIX).

	* exec.c(execute): case TAND/TOR: pass XERROK on when executing right
	  hand side.

	* jobs.c(exchild): deleted redundant code to set j->flags
	  (near new_job() call).

	* sh.h(ksh_tmout),main.c(alarm_init),trap.c(alarm_init,alarm_catcher):
	  ifdef'd KSH.

	* sh.h(SS_SHTRAP,Trap.shtrap): added.
	* trap.c(trapsig): if shtrap is non-zero, call it.
	* trap.c(setsig): set shtrap if SS_SHTRAP set.
	* jobs.c(j_init),trap.c(alarm_init): pass SS_SHTRAP.
	* jobs.c(j_sigchld),trap.c(alarm_catcher): don't call trapsig().
	* trap.c(Sigact_alarm): removed.

Thu Aug  8 15:57:14 NDT 1996 Michael Rendell ([e-mail])

	* exec.c(comexec): case CEXEC: print cannot execute error only
	  if / in pathname; also, set exit code to 126.

	* exec.c(do_selectargs): added print_menu arg; only print
	  menu if this is set, or if REPLY is null; removed "while isspace"
	  loop.
	* exec.c(execute): case TSELECT: call do_selectargs with print_menu
	  of TRUE on first call only.

	* exec.c(define): added was_set variable and logic.
	* c_sh.c(c_unset): return 1 if variable/function to be unset wasn't
	  set to begin with.

Wed Jul 31 10:33:00 NDT 1996 Michael Rendell ([e-mail])

	* sh.h(Tflag): new type.
	* sh.h(builtin_flag): changed type to Tflag.
	* table.h(struct tbl): changed type of flag field to Tflag.
	* c_ksh.c(typeset): changed type of flag, fset, fclr to Tflag.
	* c_ksh.c(c_alias): changed type of xflag to Tflag.
	* exec.c(comexec): changed type of old_inuse to Tflag.
	* exec.c(builtin): changed type of flag to Tflag.
	* var.c(typeset): changed set, clr args to Tflag; convert second
	  arg of call to local() to boolean.

Wed Jul 31 10:26:25 NDT 1996 Michael Rendell ([e-mail])

	* sh.h(C_QUOTE): new define.
	* sh.h(ctypes[]),misc.c(ctypes[]): changed from char to short.
	* misc.c(initctypes): set C_QUOTE bits in ctypes[].
	* misc.c(print_value_quoted): use C_QUOTE.

Mon Jul 29 11:38:36 NDT 1996 Michael Rendell ([e-mail])

	* lex.c(set_prompt): don't print warning message if setjmp returns
	  non-zero.

Fri Jul 26 10:16:27 NDT 1996 Michael Rendell ([e-mail])

	* lex.c(set_prompt): don't do ! and parameter expansion if !KSH.

	* table.h(V_MAIL,V_MAILPATH,V_MAILCHECK): ifdef KSH.
	* var.c(initvar,setspec,unsetspec): ifdef KSH use of MAIL stuff.
	* mail.c: ifdef KSH whole file.
	* main.c(shell): ifdef KSH call to mcheck().
	* main.c(initcoms[]): ifdef KSH the MAILCHECK=600.
	  (based on patches from Marc Olzheim).

	* exec.c(PS4_SUBSTITUTE): new macro.
	* exec.c(execute, comexec, iosetup): use PS4_SUBSTITUTE.

Thu Jul 25 17:19:17 NDT 1996 Michael Rendell ([e-mail])

	* sh.h(F_VIESCCOMPLETE): new define.
	* misc.c(options[]): added vi-esccomplete.
	* vi.c(classify[]): make ^[ a repeatable command.
	* vi.c(vi_cmd): check F_VIESCCOMPLETE for ^[.

Mon Jul 22 16:54:38 NDT 1996 Michael Rendell ([e-mail])

	* c_ksh.c(c_getopts): return if variable is readonly; don't change
	  OPTIND if option is bad (fragile).
	* c_sh.c(c_brkcont): use ksh_getopt(); changed error message if
	  n <= 0.
	* c_sh.c(c_dot,c_eval,c_exitreturn): use ksh_getopt().
	* misc.c(ksh_getopt): print `unknown option' instead of `bad option'.

Mon Jul 22 16:08:40 NDT 1996 Michael Rendell ([e-mail])

	* edit.c(x_init): do NOT export COLUMNS/LINES - causes more problems
	  than it fixes.

Mon Jul 22 15:49:35 NDT 1996 Michael Rendell ([e-mail])

	* syn.c(get_command): fixed test for '< foo (command)' so it
	  works.

Fri Jun 21 09:57:47 NDT 1996 Michael Rendell ([e-mail])

	* aclocal.m4(KSH_OPENDIR_CHECK): include dirent.h if HAVE_DIRENT_H
	  defined (was DIRENT || _POSIX_VERSION).
	* aclocal.m4(KSH_UNISTD_H): don't test HAVE_DIRENT_H when including
	  dirent.h.

Wed Jun 12 11:02:32 NDT 1996 Michael Rendell ([e-mail])

	* c_test.c(b_ops[]): added "==" entry (ksh93ism).

Mon Jun 10 14:00:21  1996 Michael Rendell ([e-mail])

	* ksh_stat.h: undef S_ISSOCK if STAT_MACROS_BROKEN defined.
	* aclocal.m4(AC_HEADER_STAT): redefine autoconf's version to handle
	  FreeBSD's S_ISSOCK.

Tue Jun  4 08:41:19 NDT 1996 Michael Rendell ([e-mail])

	* made pdksh-5.2.7 distribution

	* vi.c(CMDLEN): changed from 16 back to 1024.

Sun Jun  2 11:54:46 NDT 1996 Michael Rendell ([e-mail])

	* made pdksh-5.2.6 distribution

Sun Jun  2 11:46:56 NDT 1996 Michael Rendell ([e-mail])

	* exec.c(search_access): changed ordering of xsuffixes[], rsuffixes[];
	  removed code that used xsuffixes[] when suffix is present.
	* lex.c(getsc_line): set O_TEXT/O_BINARY if os/2.
	* main.c(remove_temps): added os2 ifdefs.
	  [Changes from Dale DePriest.]

Tue May 21 14:18:22 NDT 1996 Michael Rendell ([e-mail])

	* vi.c(vi_cmd): case '#': call do_comment() to do work.
	* vi.c(do_comment): new function.
	* vi.c(putbuf,grabhist,grabsearch): fixed pesimestic off-by-1 error
	  (cbufsize - 1 -> cbufsize).
	* vi.c(vi_hook): case VCMD: case -1: added refresh(0).
	* vi.c(vi_cmd): case 'P': don't move cursor back if nothing added.

Tue May 21 12:03:34 NDT 1996 Michael Rendell ([e-mail])

	* emacs.c(do_complete): don't add space if single match and
	  it doesn't end with a /.

Tue May 21 11:51:36 NDT 1996 Michael Rendell ([e-mail])

	* edit.c(x_init): use typeset to set EXPORT attribute for
	  COLUMNS/LINES.

Tue May 21 11:40:12 NDT 1996 Michael Rendell ([e-mail])

	* misc.c(parseargs): option setting: ignore context if option
	  isn't being changed.
	* misc.c(printoptions): for non-verbose mode: print a set command
	  (eg, set -o vi -o ...) instead of just the option names.

Tue May 21 11:14:27 NDT 1996 Michael Rendell ([e-mail])

	* c_sh.c(c_brkcont): if n is too big, use last enclosing loop.

Fri May 10 09:27:47 NDT 1996 Michael Rendell ([e-mail])

	* sh.h(Getopt): changed field p from int to unsigned.

Tue May  7 12:10:47 NDT 1996 Michael Rendell ([e-mail])

	* made pdksh-5.2.5 distribution

Tue May  7 11:45:37 NDT 1996 Michael Rendell ([e-mail])

	* syn.c(compile): set multiline if source is SSTRING.
	* syn.c(yyparse): don't peek before calling c_list() - build
	  TEOF if c_list() fails and c is 0.
	* syn.c(c_list): remove SSTRING test.
	* syn.c(get_command): if EOF is reached, free iops,args,vars.
	* syn.c(syntaxerr): set multiline.on to false when it is used;
	  don't use multiline.on if start token is 0.

Tue May  7 10:11:41 NDT 1996 Michael Rendell ([e-mail])

	* history.c(c_fc,hist_execute): moved calls to histbackup() from
	  c_fc() to hist_execute().
	* history.c(hist_get): number: took out +1 correction as histbackup
	  hasn't been done yet; string: added -1 correction to ensure
	  current fc command isn't searched.
	* history.c(hist_get_newest,hist_get_oldest): don't find the
	  current (fc) command; removed print_err argument (was always
	  true).
	* history.c(hist_get,hist_get_newest): added allow_cur argument;
	  changed all calls.

Mon May  6 09:55:29 NDT 1996 Michael Rendell ([e-mail])

	* emacs.c(x_nextcmdp): renamed to x_nextcmd, changed from
	  char ** to int.
	* emacs.c(x_nl_next_com): save absolute command number, not
	  relative position in history array (which changes).
	* emacs.c(x_emacs): convert x_nextcmd back to relative position.
	* emacs.c(x_init_emacs): initialize x_nextcmd to -1.

Sun May  5 13:10:48 NDT 1996 Michael Rendell ([e-mail])

	* expr.c(evalexpr): when assigning a non-integer, call setint()
	 (not setstr(..., strval(...))).

Sun May  5 12:16:11 NDT 1996 Michael Rendell ([e-mail])

	* mail.c(maddmsg): changed name to mprintit(); now prints message
	  directly instead of saving in a linked list; changed all calls.
	* mail.c(mprint): deleted; deleted all calls.
	* mail.c(mmsgs,struct mailmsg): deleted.

Sun May  5 11:52:05 NDT 1996 Michael Rendell ([e-mail])

	* lex.h(SF_TTY): new flag.
	* lex.h(STTY): deleted.
	* main.c(main): if tty, use SSTDIN, set SF_TTY.
	* main.c(shell): check SF_TTY instead of STTY.
	* lex.c(getsc_): call getsc_line for SSTDIN/SFILE.
	* lex.c(getsc_line): new function (merged old STTY/SSTDIN/SFILE code).

Fri May  3 11:24:17 NDT 1996 Michael Rendell ([e-mail])

	* main.c(shell): changed exit_atend to toplevel.  Changed interactive
	  to be falking&toplevel (was talking&s->type==STTY).

Fri May  3 10:59:22 NDT 1996 Michael Rendell ([e-mail])

	* var.c(getint): only allow one base (ie, disallow 2#4#5).

Thu May  2 21:31:23 NDT 1996 Michael Rendell ([e-mail])

	* var.c(array_index_calc): new function
	* var.c(global): call array_index_calc(); moved $2 code into
	  if (!letter(c))...
	* var.c(local): call array_index_calc(); added copy argument & code;
	  changed all calls.
	* table.h(LOCAL_COPY): new define.
	* exec.c(comexec): maybe pass LOCAL_COPY to typeset().

Thu May  2 16:34:29 NDT 1996 Michael Rendell ([e-mail])

	* emacs.c: command completion changes.
	* emacs.c(Comp_type,CT_LIST,CT_COMPLETE,CT_COMPLIST): new type.
	* emacs.c(x_ins): return type changed to int; return -1 if
	  string can't be inserted.
	* emacs.c(x_do_ins): new function.
	* emacs.c(add_stash,list_stash,compl_dec,compl_file,compl_command,
	  str_match): deleted; changed callers to use do_complete().
	* emacs.c(do_complete,x_expand): new functions.
	* emacs.c(x_ftab[],x_defbindings[]): added entry for file-expand;
	  bound to <ESC>*.

Thu May  2 15:31:32 NDT 1996 Michael Rendell ([e-mail])

	* lex.c(set_prompt): pass strlen() + 1 to shf_sopen.
	  (fix from Arnon Kanfi).

Wed Apr 24 11:50:52 NDT 1996 Michael Rendell ([e-mail])

	* history.c(c_fc): -e -: don't increment wp past null; allow
	  pat=replace arg with "-1" type argument.
	  (based on fix from Jason Tyler).

Mon Apr 15 11:58:34 NDT 1996 Michael Rendell ([e-mail])

	* table.c(tenter),alloc.c(alloc): changed use of offsetof() so field
	  parameter is a constant expression.
	* sh.h: took out undef of offsetof on CRAYs.

Fri Apr 12 16:01:40 NDT 1996 Michael Rendell ([e-mail])

	* jobs.c(JF_USETTYMODE): renamed JR_ORIGFG to JF_USETTYMODE.
	* jobs.c(j_waitj): clear JF_USETTYMODE if fg job is stopped.

Sun Apr  7 12:35:30 NDT 1996 Michael Rendell ([e-mail])

	* c_ksh(c_print): echo: don't treat a lone minus as an option.

Sat Apr  6 00:09:37 NST 1996 Michael Rendell ([e-mail])

	* c_ulimit.c(c_ulimit.c): always pass 2 args to ulimit().
	* ksh_sigsetjmp(): changed all uses to be simple expressions - seems
	  to be required by the cray C compiler.
	* sh.h(offsetof): undef if on a cray.
	  (based on fixes from Dave Kinchlea)

Sat Mar 23 13:58:12 NST 1996 Michael Rendell ([e-mail])

	* siglist.in: added WAITING,LWP,FREEZE,THAW,CANCEL

Thu Mar  7 23:26:37 NST 1996 Michael Rendell ([e-mail])

	* edit.c(x_init): set LINES if possible.

Thu Mar  7 23:01:55 NST 1996 Michael Rendell ([e-mail])

	* main.c(main): call x_init() after j_init()
	  (based on fix from Stefan Dalibor).

Thu Mar  7 16:13:10 NST 1996 Michael Rendell ([e-mail])

	* aclocal.m4(KSH_OS_TYPE): check for TitanOS (use cc -43).
	* aclocal.m4(KSH_SIGNAL_TYPE): for bsd41 signals, check if signal
	  interrupt read().

Thu Mar  7 13:59:29 NST 1996 Michael Rendell ([e-mail])

	* sh.h(strstr),missing.c(strstr): changed args to const.

Wed Mar  6 17:21:36 NST 1996 Michael Rendell ([e-mail])

	* io.c(errorf,bi_errorf): changed null pointer string check to
	  empty string; changed all calls (due to new error gcc warnings).

Wed Mar  6 17:15:58 NST 1996 Michael Rendell ([e-mail])

	* exec.c(search_access): files aren't executable if they don't
	  have any execute bits.
	* ksh_stat.h: added S_IXUSR,S_IXGRP,S_IXOTH.
	* exec.c(search_access,search_access1): OS2: changed the meaning
	  of these two functions (search_access1 now called from search_access).

Wed Mar  6 16:23:23 NST 1996 Michael Rendell ([e-mail])

	* tree.c(ptree): add case for TSELECT.

Wed Mar  6 12:40:34 NST 1996 Michael Rendell ([e-mail])

	* vi.c(Z_,is_zeroarg): new defines.
	* vi.c(classify): use Z_ for G, g, _, |, v, ^I, ^F.
	* vi.c(vi_cmd): use is_zerocount().
	* vi.c(complete_word): if command prefixed by a count, complete
	  to count'th expansion (as reported by print_expansions()).

Tue Mar  5 14:43:48 NST 1996 Michael Rendell ([e-mail])

	* eval.c(GF_NONE,GF_EXCHECK,GF_GLOBBED,GF_MARKDIR): new defines.
	* eval.c(glob_str): added markdirs argument; changed all calls;
	  made function non-static.
	* eval.c(glob): added markdirs argument; changed all calls.
	* tree.h(DOMARKDIRS): new define.
	* eval.c(expand): set DOMARKDIRS if FMARKDIRS.
	* edit.c(x_complete_word,x_print_expansions,x_file_glob,x_command_glob,
	  x_locate_word,x_cf_glob,x_add_glob,x_longest_prefix,x_free_words):
	  new functions.
	* proto,edit.h: moved functions defined in edit.c to edit.h.
	* vi.c(struct edstate): moved to top of file.
	* vi.c(print_expansions): added struct edstate argument; changed all
	  calls.
	* vi.c(struct glob,Glob,globstr,glob_word,): deleted
	* vi.c(vi_pprompt): new function; changed all calls of pprompt() in
	  vi.c to use vi_pprompt().
	* vi.c(x_vi): moved to top of file.
	* vi.c(expand_word,complete_word): free buf if it is not null.
	* vi.c(expand_word,complete_word,print_expansions): changed
	  to use new edit.c functions.

Tue Feb 20 11:02:05 NST 1996 Michael Rendell ([e-mail])

	* table.c(twalk,tnext,struct tstate),table.h(struct tstate): moved
	  struct tstate from table.c to table.h; changed twalk,tnext to take
	  struct tstate* argument; changed all calls; deleted static tstate
	  variable.

Sat Feb 17 12:28:11 NST 1996 Michael Rendell ([e-mail])

	* vi.c(vi_hook): case VSEARCH: if new pattern is empty, repeat last
	  search.

Sat Feb 10 15:59:28 NST 1996 Michael Rendell ([e-mail])

	* table.h(struct arg_info): new struct.
	* table.h(struct block): changed argv, argc fields to argi.

Sat Feb 10 15:12:47 NST 1996 Michael Rendell ([e-mail])