changelog.0

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。

	* eval.c(expand): leading non-white-space IFS chars no cause initial
	  empty field.

Thu Dec  1 12:04:00 NST 1994 Michael Rendell ([e-mail])

	* made pdksh-5.1.1 distribution

Thu Dec  1 10:50:38 NST 1994 Michael Rendell ([e-mail])

	* sh.h(TF_FATAL,fatal_trap): new define,variable.
	* trap.c(inittraps,trapsig,fatal_trap_check,trap_pending,runtrap,
	  settrap): use TF_FATAL, fatal_trap.
	* trap.c(runtraps): changed argument from bool to TF_* flag; changed
	  all calls.
	* jobs.c(j_waitj): check fatal_trap flag.

Wed Nov 30 11:20:03 NST 1994 Michael Rendell ([e-mail])

	* conf-end.h: new file.
	* config.h.bot: moved guts to conf-end.h.

	* emacs.c(struct x_ftab): changed type of xf_db_char from char to int.
	* emacs.c(x_emacs): changed type of c from char to int.
	* emacs.c(X_NTAB): new define.
	* emacs.c(x_bind,x_init_eamcs): new X_NTAB, X_TABSZ.
	* emacs.c(x_prefix3, x_meta3): ifdef OS2.
	* emacs.c(x_bind): ifdef OS2; mask *a1 with CHARMASK.

	* exec.c(search_access): new function.
	* exec.c(search): use search_access() instead of duplicating test.
	* exec.c(search,search_access1): ifdef OS2.

	* Makefile.in(OS2FILES): new macro.
	* Makefile.in(dist): add OS2FILES to distribution.

	* options.h(DEFAULT_PATH): ifdef OS2.
	* edit.c(x_getc,x_mode): ifdef OS2.
	* path.c(make_path): ifdef OS2.

Tue Nov 29 16:51:35 NST 1994 Michael Rendell ([e-mail])

	* sh.h(EXECSHELL,EXECSHELL_STR): ifdef OS2.
	* exec.c(scriptexec): use EXECSHELL_STR (was "EXECSHELL").

	* trap.c(sigtraps[]): ifdef OS2.
	* lex.c(yylex): ifdef OS2.
	* misc.c(change_flag): ifdef OS2.
	* history.c(HISTFILE): ifdef OS2.
	* eval.c(homedir): ifdef OS2.
	* c_sh.c(shbuiltins[]): ifdef OS2.

	* sh.h(ksh_execve,ksh_dupbase): new defines.

	* jobs.c(exchild): ifdef use of nice.

Tue Nov 29 12:32:26 NST 1994 Michael Rendell ([e-mail])

	* eval.c(globit,copy_non_glob): changed to pass/use &xp it can change
	  (memory can be re-allocated).

	* ksh_dir.h(NLENGTH): new macro.
	* eval.c(globit): use NLENGTH macro.

	* alloc.c(aresize): removed redundent np and optr variables.

Mon Nov 28 14:55:49 NST 1994 Michael Rendell ([e-mail])

	* config.h.bot(HISTORY): new define.
	* lex.c(getsc_): ifdef HISTORY.
	* history.c: ifdef HISTORY (dummy histsave, init_histvec and
	  hist_finish routines).
	* c_ksh.c(kshbuiltins): c_fc: ifdef KSH
	* lex.h(HISTORY): changed to HISTORYSIZE; changed all references.

	* options.h(KSH): new define.
	* config.h.bot: changed to deal with KSH define.
	* exec.c(do_select,pr_menu): ifdef KSH.
	* exec.c(execute): case TSELECT: ifdef KSH.
	* c_ksh.c(c_whence,c_command,kshbuiltins[]): ifdef KSH.
	* main.c(initcoms[],main): ifdef some aliases, SECONDS/RANDOM/TMOUT.
	* syn.c(get_command): case TDBRACKET: ifdef KSH.
	* syn.c(db_parse,db_aoexpr,db_nexpr,dp_primary): ifdef KSH.
	* syn.c(tokentab[]): "select", "[[" ifdef KSH.
	* var.c(special,getspec,setspec,unsetspec): ifdef KSH.
	* ksh.1: ifdef KSH; misc fixups.
	  (changes mostly from Michael Haardt).

Mon Nov 28 14:27:34 NST 1994 Michael Rendell ([e-mail])

	* var.c(skip_varname,special,global,local), table.c(hash,tsearch,
	  tenter): made argument and return value const.

	* main.c(version_param[]): new variable.
	* main.c(initcoms[],main): use version_param instead of "KSH_VERSION".

	* history.c(histsave): EASY_HISTORY: changed to take same arguments
	  as COMPLEX_HISTORY histsave(); changed all calls, removing
	  unneeded ifdefs.

	* vi.c(x_vi), emacs.c(x_emacs): changed unwind() call from LINTR
	  to LSHELL so newline isn't printed twice - also lets runtrap()
	  set the exit code.

	* vi.c(vi_cmd): increment source line if saving to history.

Fri Nov 25 14:43:57 NST 1994 Michael Rendell ([e-mail])

	* syn.c(get_command): don't generate a syntax error if EOF is read.

	* configure.in: add LDSTATIC to LDFALGS if the former is set.

	* history.c(hist_skip_back): start at the end of the buffer, not
	  one past the end (fix from Simon J. Gerraty).

Thu Nov 24 09:53:49 NST 1994 Michael Rendell ([e-mail])

	* syn.c(get_command,dogroup): allow { ...;} to be used instead
	  of do ...;done in for/select loops.

Wed Nov 23 09:09:43 NST 1994 Michael Rendell ([e-mail])

	* made pdksh-5.1.0 distribution

	* var.c(setspec): set seconds to current time - assigned value,
	  not just current time.

	* emacs.c(x_copy_arg): deleted ifdef'd out code (x_prev_histword()
	  does what it was supposed to do).

	* emacs.c(compl_command): don't call list_stash() twice (happened
	  if type == 2 and multi set).

Tue Nov 22 10:26:13 NST 1994 Michael Rendell ([e-mail])

	* c_test.c(eval_unop): don't assume S_ISBLK, S_ISCHR, S_ISUID,
	  S_ISGID are defined.

	* path.c(make_path): avoid addeding extra /'s in paths; avoid
	  infinate loop if result buffer not big enough.

	* main.c(main): setting PWD: avoid calling setstr() with the
	  current value of PWD.

	* var.c(typeset): set free_me to 0 if t is integer.

	* emacs.c(x_search_hist): added overflow checking to fixed sized
	  buffers.
	* emacs.c(compl_file,compl_command): removed fixed sized buffers.

	* vi.c(x_vi), emacs.c(x_emacs): on interrupt, unwind instead of
	  calling runtraps().

	* vi.c(vi_cmd): added 'g' command to goto the most recent command.

	* c_sh.c(c_read), c_ksh.c(c_print): always increment source->line when
	  saving history.

Mon Nov 21 10:45:34 NST 1994 Michael Rendell ([e-mail])

	* exec.c(do_selectargs): removed use of pmenu variable (redundent)
	  use isspace() instead of IFS chars; include <ctype.h>.

	* aclocal.m4(KSH_TERM_CHECK): do not allow HAVE_TERMIOS_H check to
	  succeed on ultrix (avoid type-ahead loss).

	* emacs.c(x_fword): cahnged loop to skip non word chars, then word
	  chars (was the opposite).

	* main.c(shell): after error/interrupt/etc, reset an EOF if ignoreeof
	  option is set.

	* vi.c(classify[]): changed space (040) from C_|U_ to M_
	  (got broken in 5.0.10).

	* ksh_wait.h(ksh_waitpid): new define.
	* jobs.c(waitpid): moved define to ksh_wait.h; changed use of
	  waitpid() to ksh_waitpid().

	* history.c(hist_skip_back),io.c(maketemp): use procpid instead of
	  getpid().

Fri Nov 18 16:08:09 NST 1994 Michael Rendell ([e-mail])

	* vi.c(FSHOW8): inverted meaning: now if set, do the M- stuff
	  (done so 8 bit char sets work by default).

	* main.c(main): set exstat to 127 if command file can't be opened.

	* main.c(main): use argv[0] instead of kshname when deciding
	  whether to include profiles.

Fri Nov 18 14:25:11 NST 1994 Michael Rendell ([e-mail])

	* made pdksh-5.0.10.1 distribution

	* tty.h: deleted KSH_VDISABLE; moved _POSIX_VDISABLE stuff to edit.c.
	* edit.c(x_init): calculate value for vdisable_c.
	* edit.c(x_mode): use vdisable_c instead of KSH_VDISABLE.

Thu Nov 17 12:09:13 NST 1994 Michael Rendell ([e-mail])

	* made pdksh-5.0.10 distribution

	* lex.c(getsc_),edit.c(x_getc): call runtraps(FALSE) if read is
	  interrupted.
	* vi.c(x_vi),emacs.c(x_emacs): call runtraps(FALSE) (was TRUE).

Wed Nov 16 09:48:54 NST 1994 Michael Rendell ([e-mail])

	* exec.c(execute,scriptexec): call __setostype(0)/(1) before/after
	  execve() on ISC machines.

	* trap.c(trap_pending): new fuction.
	* jobs.c(j_waitj): use trap_pending(); return -<signal-number> if
	  interrupted.
	* jobs.c(waitfor): added sigp argument; changed all calls.
	* c_sh.c(c_wait): use signal number set by waitfor() to set exit status.

	* shf.c(SHF_INTERRUPT): no longer calls intrcheck() - now sets
	  error flag and returns EOF.
	* c_sh.c(c_read): re-arranged to have single shf_getc() call; if read
	  interrupted and signal is fatal (fatal_trap_check()), make read
	  return with appropriate exit code.
	* trap.c(fatal_trap_check()): new function.
	* trap.c(inittraps()): catch and cleanup on SIGHUP; don't force the
	  setting of SIGINT,SIGQUIT,SIGTERM,SIGHUP.

	* table.c(tenter): changed to use strlen()/memcpy() instead of loops.

	* var.c(initvar): new function.
	* main.c(main): call initvar().
	* var.c(special): changed to use hash table for lookup.

	* main.c(main),syn.c(initkeywords): moved table initialization
	  from main() to initkeywords().

Tue Nov 15 10:01:20 NST 1994 Michael Rendell ([e-mail])

	* eval.c(copy_non_glob): new routine.
	* eval.c(globit): changed to use copy_non_glob() instead of strchr().

	* misc.c(cclass): if [..] pattern has no closing ], do literal
	  compare of character with [ (used to always fail).

	* eval.c(globit): handle symbolic links in the check code.

	* configure.in: added check for lstat().
	* ksh_stat.h: defined lstat to be stat if lstat is not available.

	* exec.c(search): return Xclose() instead of Xstring().

Mon Nov 14 16:28:41 NST 1994 Michael Rendell ([e-mail])

	* ksh_times.h: changed BROKEN_TIMES to TIMES_BROKEN.

	* c_test.c(syntax): removed \n from error messages.

	* eval.c(glob,globit): changed to use dynamicly allocated string
	  instead of a fixed sized buffer.

Thu Nov 10 10:47:55 NST 1994 Michael Rendell ([e-mail])

	* history.c(sethistsize): don't set size if new size is < 0; fixed
	  offset calculation so histptr is not way beyond the end of array;
	  if history is shrinking, save newest history back.

	* vi.c(vi_hook): case VSEARCH: call restore_cbuf() after \n or \r.

	* main.c(quitenv): call restfd() even if fd < 0 to re-close fd.

	* exec.c(execute): commented out code that set savefd[0/1] to -1
	  if input/output was a pipeline.

	* missing.c(dup2_fixup): deleted function.
	* sh.h(dup2->dup2_fixup): deleted define.
	* io.c(ksh_dup2): new function; changed all dup2() calls to ksh_dup2().

Wed Nov  9 11:11:31 NST 1994 Michael Rendell ([e-mail])

	* edit.h(struct edchars): added eof field.
	* edit.c(x_init): initialize eof fields.
	* vi.c(x_vi): changed ^D to edchars.eof.
	* vi.c(vi_cmd): make I/cc/S skip blanks.

	* history.c(histsave): EASY_HISTORY: use memmove() to copy pointers
	  back one.

	* vi.c(vi_cmd): make G act the same as at&t ksh.
	* vi.c(ismeta,O_): deleted macros; removed all references to O_.
	* vi.c(classify[]): add ^X and ^F to command mode.

Tue Nov  8 11:15:01 NST 1994 Michael Rendell ([e-mail])

	* main.c(initsubs[]): don't set SHELL.

	* vi.c(vi_cmd): added v command (start up vi).
	* vi.c(vi_hook): added case for vi_cmd() returning 2.
	* vi.c(grabsearch): set anchored flag if pattern starts with ^.
	  (based on fixes from Michael Jetzer).

	* history.c(findhist): added anchored argument; changed all calls.
	* history.c(histget): start searching from histptr-1; changed to
	  call findhist() to do searching.
	* history.c(c_fc): changed to print multiline commands correctly.
	  (based on fixes from Michael Jetzer).

Fri Nov  4 10:30:14 NST 1994 Michael Rendell ([e-mail])

	* lex.c(yylex): when pushing alias sources, allocate from existing
	  source's area.

	* lex.c(struct source): added areap field.
	* lex.c(pushs): added area argument; changed all calls.
	* history.c(histrpl): changed constant sized hline[] to expandable
	  string; removed hline/hsize parameters; changed all calls; put
	  newline at end of string.
	* history.c(c_fc): changed to use dynamically sized buffer when reading
	  commands; strip nulls after read.
	* history.c(histbackup): made static.

	* trap.c(block_pipe): if handler is SIG_DFL, change it to SIG_IGN.

	* lex.c(readhere): changed to allow eof after end-of-file marker
	  (bug report from Andrew Moore).

Thu Nov  3 09:09:39 NST 1994 Michael Rendell ([e-mail])

	* io.c(coproc_read_close,coproc_write_close): new functions.
	* c_sh.c(c_read): call coproc_read_close() when eof is read.
	* c_ksh.c(c_print): set PO_COPROC if fd is coproc.write; call
	  coproc_write_close() if write fails due to EPIPE.
	* exec.c(iosetup): call coproc_write_close() after #>&p.
	* sh.h(EF_COPROC_DUPED): deleted.
	* sh.h(struct coproc): deleted isopen field.
	* io.c(cleanup_coproc): do not use isopen field.
	* c_sh.c(c_exec): deleted EF_COPROC_DUPED code.
	* exec.c(TCOPROC): don't set isopen; don't start new coprocess if
	  old job exists and write pipe hasn't been closed.

	* misc.c(str_zcpy): new function.
	* lex.c(getsc_): made line[] buffer local/static; use str_zcpy()