1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
36 #include <sys/ioctl.h>
41 #include "intervals.h"
45 #include "blockinput.h"
46 #include "syssignal.h"
52 #include <sys/resource.h>
59 extern void malloc_warning ();
60 extern void set_time_zone_rule ();
61 extern char *index ();
62 extern char *strerror ();
64 /* Command line args from shell, as list of strings */
65 Lisp_Object Vcommand_line_args
;
67 /* The name under which Emacs was invoked, with any leading directory
69 Lisp_Object Vinvocation_name
;
71 /* The directory name from which Emacs was invoked. */
72 Lisp_Object Vinvocation_directory
;
74 /* The directory name in which to find subdirs such as lisp and etc.
75 nil means get them only from PATH_LOADSEARCH. */
76 Lisp_Object Vinstallation_directory
;
78 /* Hook run by `kill-emacs' before it does really anything. */
79 Lisp_Object Vkill_emacs_hook
;
82 /* Hooks for signal USR1 and USR2 handing */
83 Lisp_Object Vsignal_USR1_hook
;
85 Lisp_Object Vsignal_USR2_hook
;
89 /* Search path separator. */
90 Lisp_Object Vpath_separator
;
92 /* Set nonzero after Emacs has started up the first time.
93 Prevents reinitialization of the Lisp world and keymaps
94 on subsequent starts. */
97 #ifdef DOUG_LEA_MALLOC
98 /* Preserves a pointer to the memory allocated that copies that
99 static data inside glibc's malloc. */
100 void *malloc_state_ptr
;
101 /* From glibc, a routine that returns a copy of the malloc internal state. */
102 extern void *malloc_get_state ();
103 /* From glibc, a routine that overwrites the malloc internal state. */
104 extern void malloc_set_state ();
107 /* Variable whose value is symbol giving operating system type. */
108 Lisp_Object Vsystem_type
;
110 /* Variable whose value is string giving configuration built for. */
111 Lisp_Object Vsystem_configuration
;
113 /* Variable whose value is string giving configuration options,
114 for use when reporting bugs. */
115 Lisp_Object Vsystem_configuration_options
;
117 Lisp_Object Qfile_name_handler_alist
;
119 /* If non-zero, emacs should not attempt to use an window-specific code,
120 but instead should use the virtual terminal under which it was started */
121 int inhibit_window_system
;
123 /* If nonzero, set Emacs to run at this priority. This is also used
124 in child_setup and sys_suspend to make sure subshells run at normal
125 priority; Those functions have their own extern declaration. */
128 /* If non-zero a filter or a sentinel is running. Tested to save the match
129 data on the first attempt to change it inside asynchronous code. */
130 int running_asynch_code
;
134 extern int inherited_pgroup
;
137 #ifdef HAVE_X_WINDOWS
138 /* If non-zero, -d was specified, meaning we're using some window system. */
142 /* An address near the bottom of the stack.
143 Tells GC how to save a copy of the stack. */
146 #ifdef HAVE_WINDOW_SYSTEM
147 extern Lisp_Object Vwindow_system
;
148 #endif /* HAVE_WINDOW_SYSTEM */
150 extern Lisp_Object Vauto_save_list_file_name
;
152 #ifdef USG_SHARED_LIBRARIES
153 /* If nonzero, this is the place to put the end of the writable segment
156 unsigned int bss_end
= 0;
159 /* Nonzero means running Emacs without interactive terminal. */
163 /* Value of Lisp variable `noninteractive'.
164 Normally same as C variable `noninteractive'
165 but nothing terrible happens if user sets this one. */
169 /* Save argv and argc. */
173 static void sort_args ();
174 void syms_of_emacs ();
176 /* Signal code for the fatal signal that was received */
177 int fatal_error_code
;
179 /* Nonzero if handling a fatal error already */
180 int fatal_error_in_progress
;
183 int SIGUSR1_in_progress
=0;
185 handle_USR1_signal (sig
)
188 if (! SIGUSR1_in_progress
)
190 SIGUSR1_in_progress
= 1;
192 if (!NILP (Vrun_hooks
) && !noninteractive
)
193 call1 (Vrun_hooks
, intern ("signal-USR1-hook"));
195 SIGUSR1_in_progress
= 0;
200 int SIGUSR2_in_progress
=0;
202 handle_USR2_signal (sig
)
205 if (! SIGUSR2_in_progress
)
207 SIGUSR2_in_progress
= 1;
209 if (!NILP (Vrun_hooks
) && !noninteractive
)
210 call1 (Vrun_hooks
, intern ("signal-USR2-hook"));
212 SIGUSR2_in_progress
= 0;
218 /* Handle bus errors, illegal instruction, etc. */
220 fatal_error_signal (sig
)
223 fatal_error_code
= sig
;
224 signal (sig
, SIG_DFL
);
226 TOTALLY_UNBLOCK_INPUT
;
228 /* If fatal error occurs in code below, avoid infinite recursion. */
229 if (! fatal_error_in_progress
)
231 fatal_error_in_progress
= 1;
233 shut_down_emacs (sig
, 0, Qnil
);
237 LIB$
STOP (SS$_ABORT
);
239 /* Signal the same code; this time it will really be fatal.
240 Remember that since we're in a signal handler, the signal we're
241 going to send is probably blocked, so we have to unblock it if we
242 want to really receive it. */
244 sigunblock (sigmask (fatal_error_code
));
246 kill (getpid (), fatal_error_code
);
252 /* Handler for SIGDANGER. */
254 memory_warning_signal (sig
)
257 signal (sig
, memory_warning_signal
);
259 malloc_warning ("Operating system warns that virtual memory is running low.\n");
261 /* It might be unsafe to call do_auto_save now. */
262 force_auto_save_soon ();
266 /* We define abort, rather than using it from the library,
267 so that GDB can return from a breakpoint here.
268 MSDOS has its own definition on msdos.c */
270 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
274 kill (getpid (), SIGABRT
);
275 /* This shouldn't be executed, but it prevents a warning. */
281 /* Code for dealing with Lisp access to the Unix command line */
284 init_cmdargs (argc
, argv
, skip_args
)
290 Lisp_Object name
, dir
, tem
;
291 int count
= specpdl_ptr
- specpdl
;
292 Lisp_Object raw_name
;
297 raw_name
= build_string (argv
[0]);
299 /* Add /: to the front of the name
300 if it would otherwise be treated as magic. */
301 tem
= Ffind_file_name_handler (raw_name
, Qt
);
303 raw_name
= concat2 (build_string ("/:"), raw_name
);
305 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
306 Vinvocation_directory
= Ffile_name_directory (raw_name
);
308 /* If we got no directory in argv[0], search PATH to find where
309 Emacs actually came from. */
310 if (NILP (Vinvocation_directory
))
313 int yes
= openp (Vexec_path
, Vinvocation_name
,
314 EXEC_SUFFIXES
, &found
, 1);
317 /* Add /: to the front of the name
318 if it would otherwise be treated as magic. */
319 tem
= Ffind_file_name_handler (found
, Qt
);
321 found
= concat2 (build_string ("/:"), found
);
322 Vinvocation_directory
= Ffile_name_directory (found
);
326 if (!NILP (Vinvocation_directory
)
327 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
328 /* Emacs was started with relative path, like ./emacs.
330 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
332 Vinstallation_directory
= Qnil
;
334 if (!NILP (Vinvocation_directory
))
336 dir
= Vinvocation_directory
;
337 name
= Fexpand_file_name (Vinvocation_name
, dir
);
340 Lisp_Object tem
, lib_src_exists
;
341 Lisp_Object etc_exists
, info_exists
;
343 /* See if dir contains subdirs for use by Emacs.
344 Check for the ones that would exist in a build directory,
345 not including lisp and info. */
346 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
347 lib_src_exists
= Ffile_exists_p (tem
);
350 /* MSDOS installations frequently remove lib-src, but we still
351 must set installation-directory, or else info won't find
352 its files (it uses the value of installation-directory). */
353 tem
= Fexpand_file_name (build_string ("info"), dir
);
354 info_exists
= Ffile_exists_p (tem
);
359 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
361 tem
= Fexpand_file_name (build_string ("etc"), dir
);
362 etc_exists
= Ffile_exists_p (tem
);
363 if (!NILP (etc_exists
))
365 Vinstallation_directory
366 = Ffile_name_as_directory (dir
);
371 /* See if dir's parent contains those subdirs. */
372 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
373 lib_src_exists
= Ffile_exists_p (tem
);
377 /* See the MSDOS commentary above. */
378 tem
= Fexpand_file_name (build_string ("../info"), dir
);
379 info_exists
= Ffile_exists_p (tem
);
384 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
386 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
387 etc_exists
= Ffile_exists_p (tem
);
388 if (!NILP (etc_exists
))
390 tem
= Fexpand_file_name (build_string (".."), dir
);
391 Vinstallation_directory
392 = Ffile_name_as_directory (tem
);
397 /* If the Emacs executable is actually a link,
398 next try the dir that the link points into. */
399 tem
= Ffile_symlink_p (name
);
402 name
= Fexpand_file_name (tem
, dir
);
403 dir
= Ffile_name_directory (name
);
410 Vcommand_line_args
= Qnil
;
412 for (i
= argc
- 1; i
>= 0; i
--)
414 if (i
== 0 || i
> skip_args
)
416 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
419 unbind_to (count
, Qnil
);
422 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
423 "Return the program name that was used to run Emacs.\n\
424 Any directory names are omitted.")
427 return Fcopy_sequence (Vinvocation_name
);
430 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
432 "Return the directory name in which the Emacs executable was located")
435 return Fcopy_sequence (Vinvocation_directory
);
440 #ifdef LINK_CRTL_SHARE
441 #ifdef SHARABLE_LIB_BUG
442 extern noshare
char **environ
;
443 #endif /* SHARABLE_LIB_BUG */
444 #endif /* LINK_CRTL_SHARE */
448 /* A valid but unlikely value for the TZ environment value.
449 It is OK (though a bit slower) if the user actually chooses this value. */
450 static char dump_tz
[] = "UtC0";
453 #ifndef ORDINARY_LINK
454 /* We don't include crtbegin.o and crtend.o in the link,
455 so these functions and variables might be missed.
456 Provide dummy definitions to avoid error.
457 (We don't have any real constructors or destructors.) */
459 #ifndef GCC_CTORS_IN_LIBC
460 void __do_global_ctors ()
462 void __do_global_ctors_aux ()
464 void __do_global_dtors ()
466 /* Linux has a bug in its library; avoid an error. */
468 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
470 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
471 #endif /* GCC_CTORS_IN_LIBC */
474 #endif /* __GNUC__ */
475 #endif /* ORDINARY_LINK */
477 /* Test whether the next argument in ARGV matches SSTR or a prefix of
478 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
479 (the argument is supposed to have a value) store in *VALPTR either
480 the next argument or the portion of this one after the equal sign.
481 ARGV is read starting at position *SKIPPTR; this index is advanced
482 by the number of arguments used.
484 Too bad we can't just use getopt for all of this, but we don't have
485 enough information to do it right. */
488 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
501 /* Don't access argv[argc]; give up in advance. */
502 if (argc
<= *skipptr
+ 1)
505 arg
= argv
[*skipptr
+1];
508 if (strcmp (arg
, sstr
) == 0)
512 *valptr
= argv
[*skipptr
+2];
519 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
520 ? p
- arg
: strlen (arg
));
521 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
523 else if (valptr
== NULL
)
534 else if (argv
[*skipptr
+2] != NULL
)
536 *valptr
= argv
[*skipptr
+2];
548 main (argc
, argv
, envp
)
553 char stack_bottom_variable
;
557 #ifdef HAVE_SETRLIMIT
561 #ifdef LINUX_SBRK_BUG
565 #ifdef DOUG_LEA_MALLOC
568 extern void r_alloc_reinit ();
569 malloc_set_state (malloc_state_ptr
);
570 free (malloc_state_ptr
);
575 #ifdef RUN_TIME_REMAP
577 run_time_remap (argv
[0]);
580 sort_args (argc
, argv
);
582 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
583 /* We don't know the version number unless this is a dumped Emacs.
584 So ignore --version otherwise. */
588 tem
= Fsymbol_value (intern ("emacs-version"));
591 fprintf (stderr
, "Invalid value of `emacs-version'\n");
596 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
597 printf ("Copyright (C) 1998 Free Software Foundation, Inc.\n");
598 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
599 printf ("You may redistribute copies of Emacs\n");
600 printf ("under the terms of the GNU General Public License.\n");
601 printf ("For more information about these matters, ");
602 printf ("see the files named COPYING.\n");
607 /* Map in shared memory, if we are using that. */
609 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
612 /* The shared memory was just restored, which clobbered this. */
618 /* The shared memory was just restored, which clobbered this. */
625 extern int malloc_cookie
;
626 /* This helps out unexnext.c. */
628 if (malloc_jumpstart (malloc_cookie
) != 0)
629 printf ("malloc jumpstart failed!\n");
634 /* If -map specified, map the data file in */
637 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
641 #ifdef LINK_CRTL_SHARE
642 #ifdef SHARABLE_LIB_BUG
643 /* Bletcherous shared libraries! */
645 stdin
= fdopen (0, "r");
647 stdout
= fdopen (1, "w");
649 stderr
= fdopen (2, "w");
652 #endif /* SHARABLE_LIB_BUG */
653 #endif /* LINK_CRTL_SHARE */
656 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
657 /* Extend the stack space available.
658 Don't do that if dumping, since some systems (e.g. DJGPP)
659 might define a smaller stack limit at that time. */
662 && (!noninteractive
|| initialized
)
664 && !getrlimit (RLIMIT_STACK
, &rlim
))
667 extern int re_max_failures
;
668 /* Approximate the amount regex.c needs per unit of re_max_failures. */
669 int ratio
= 20 * sizeof (char *);
670 /* Then add 33% to cover the size of the smaller stacks that regex.c
671 successively allocates and discards, on its way to the maximum. */
673 /* Add in some extra to cover
674 what we're likely to use for other reasons. */
675 newlim
= re_max_failures
* ratio
+ 200000;
677 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
678 stack allocation routine for new process that the allocation
679 fails if stack limit is not on page boundary. So, round up the
680 new limit to page boundary. */
681 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
683 if (newlim
> rlim
.rlim_max
)
685 newlim
= rlim
.rlim_max
;
686 /* Don't let regex.c overflow the stack we have. */
687 re_max_failures
= (newlim
- 200000) / ratio
;
689 if (rlim
.rlim_cur
< newlim
)
690 rlim
.rlim_cur
= newlim
;
692 setrlimit (RLIMIT_STACK
, &rlim
);
694 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
696 /* Record (approximately) where the stack begins. */
697 stack_bottom
= &stack_bottom_variable
;
699 #ifdef USG_SHARED_LIBRARIES
701 brk ((void *)bss_end
);
706 #ifndef SYSTEM_MALLOC
709 /* Arrange to get warning messages as memory fills up. */
710 memory_warnings (0, malloc_warning
);
712 /* Arrange to disable interrupt input while malloc and friends are
714 uninterrupt_malloc ();
716 #endif /* not SYSTEM_MALLOC */
719 /* We do all file input/output as binary files. When we need to translate
720 newlines, we do that manually. */
724 if (!isatty (fileno (stdin
)))
725 setmode (fileno (stdin
), O_BINARY
);
726 if (!isatty (fileno (stdout
)))
729 setmode (fileno (stdout
), O_BINARY
);
731 #else /* not __DJGPP__ >= 2 */
732 (stdin
)->_flag
&= ~_IOTEXT
;
733 (stdout
)->_flag
&= ~_IOTEXT
;
734 (stderr
)->_flag
&= ~_IOTEXT
;
735 #endif /* not __DJGPP__ >= 2 */
738 #ifdef SET_EMACS_PRIORITY
740 nice (emacs_priority
);
742 #endif /* SET_EMACS_PRIORITY */
744 #ifdef EXTRA_INITIALIZE
748 inhibit_window_system
= 0;
750 /* Handle the -t switch, which specifies filename to use as terminal */
753 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
758 result
= open (term
, O_RDWR
, 2 );
761 char *errstring
= strerror (errno
);
762 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
768 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
771 fprintf (stderr
, "Using %s\n", term
);
772 #ifdef HAVE_WINDOW_SYSTEM
773 inhibit_window_system
= 1; /* -t => -nw */
777 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
778 inhibit_window_system
= 1;
780 /* Handle the -batch switch, which means don't do interactive display. */
782 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
785 /* Handle the --help option, which gives a usage message.. */
786 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
789 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
790 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
791 [--unibyte] [--multibyte] [--version] [--no-site-file]\n\
792 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
793 [+linenum] file-to-visit [--kill]\n\
794 Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\
795 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
799 #ifdef HAVE_X_WINDOWS
800 /* Stupid kludge to catch command-line display spec. We can't
801 handle this argument entirely in window system dependent code
802 because we don't even know which window system dependent code
803 to run until we've recognized this argument. */
805 char *displayname
= 0;
807 int count_before
= skip_args
;
809 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
811 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
814 /* If we have the form --display=NAME,
815 convert it into -d name.
816 This requires inserting a new element into argv. */
817 if (displayname
!= 0 && skip_args
- count_before
== 1)
819 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
822 for (j
= 0; j
< count_before
+ 1; j
++)
824 new[count_before
+ 1] = "-d";
825 new[count_before
+ 2] = displayname
;
826 for (j
= count_before
+ 2; j
<argc
; j
++)
827 new[j
+ 1] = argv
[j
];
831 /* Change --display to -d, when its arg is separate. */
832 else if (displayname
!= 0 && skip_args
> count_before
833 && argv
[count_before
+ 1][1] == '-')
834 argv
[count_before
+ 1] = "-d";
836 /* Don't actually discard this arg. */
837 skip_args
= count_before
;
841 if (! noninteractive
)
846 inherited_pgroup
= EMACS_GETPGRP (0);
847 setpgrp (0, getpid ());
850 #if defined (USG5) && defined (INTERRUPT_INPUT)
860 /* Don't catch SIGHUP if dumping. */
867 sigblock (sigmask (SIGHUP
));
868 /* In --batch mode, don't catch SIGHUP if already ignored.
869 That makes nohup work. */
871 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
872 signal (SIGHUP
, fatal_error_signal
);
873 sigunblock (sigmask (SIGHUP
));
878 ! noninteractive
|| initialized
884 /* Don't catch these signals in batch mode if dumping.
885 On some machines, this sets static data that would make
886 signal fail to work right when the dumped Emacs is run. */
887 signal (SIGQUIT
, fatal_error_signal
);
888 signal (SIGILL
, fatal_error_signal
);
889 signal (SIGTRAP
, fatal_error_signal
);
891 signal (SIGUSR1
, handle_USR1_signal
);
893 signal (SIGUSR2
, handle_USR2_signal
);
897 signal (SIGABRT
, fatal_error_signal
);
900 signal (SIGHWE
, fatal_error_signal
);
903 signal (SIGPRE
, fatal_error_signal
);
906 signal (SIGORE
, fatal_error_signal
);
909 signal (SIGUME
, fatal_error_signal
);
912 signal (SIGDLK
, fatal_error_signal
);
915 signal (SIGCPULIM
, fatal_error_signal
);
918 /* This is missing on some systems - OS/2, for example. */
919 signal (SIGIOT
, fatal_error_signal
);
922 signal (SIGEMT
, fatal_error_signal
);
924 signal (SIGFPE
, fatal_error_signal
);
926 signal (SIGBUS
, fatal_error_signal
);
928 signal (SIGSEGV
, fatal_error_signal
);
930 signal (SIGSYS
, fatal_error_signal
);
932 signal (SIGTERM
, fatal_error_signal
);
934 signal (SIGXCPU
, fatal_error_signal
);
937 signal (SIGXFSZ
, fatal_error_signal
);
941 /* This just means available memory is getting low. */
942 signal (SIGDANGER
, memory_warning_signal
);
946 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
947 signal (SIGXCPU
, fatal_error_signal
);
949 signal (SIGIOINT
, fatal_error_signal
);
951 signal (SIGGRANT
, fatal_error_signal
);
952 signal (SIGRETRACT
, fatal_error_signal
);
953 signal (SIGSOUND
, fatal_error_signal
);
954 signal (SIGMSG
, fatal_error_signal
);
958 noninteractive1
= noninteractive
;
960 /* Perform basic initializations (not merely interning symbols) */
967 init_charset_once ();
969 init_syntax_once (); /* Create standard syntax table. */
970 init_category_once (); /* Create standard category table. */
971 /* Must be done before init_buffer */
972 init_casetab_once ();
973 init_buffer_once (); /* Create buffer table and some buffers */
974 init_minibuf_once (); /* Create list of minibuffers */
975 /* Must precede init_window_once */
976 init_window_once (); /* Init the window system */
982 running_asynch_code
= 0;
984 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
985 but not while dumping. */
988 ! noninteractive
|| initialized
994 int inhibit_unibyte
= 0;
996 /* --multibyte overrides EMACS_UNIBYTE. */
997 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
998 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1001 /* --unibyte requests that we set up to do everything with single-byte
1002 buffers and strings. We need to handle this before calling
1003 init_lread, init_editfns and other places that generate Lisp strings
1004 from text in the environment. */
1005 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1006 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1007 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1009 Lisp_Object old_log_max
;
1010 Lisp_Object symbol
, tail
;
1012 symbol
= intern ("default-enable-multibyte-characters");
1013 Fset (symbol
, Qnil
);
1017 /* Erase pre-dump messages in *Messages* now so no abort. */
1018 old_log_max
= Vmessage_log_max
;
1019 XSETFASTINT (Vmessage_log_max
, 0);
1020 message_dolog ("", 0, 1, 0);
1021 Vmessage_log_max
= old_log_max
;
1024 for (tail
= Vbuffer_alist
; CONSP (tail
);
1025 tail
= XCONS (tail
)->cdr
)
1029 buffer
= Fcdr (XCONS (tail
)->car
);
1030 /* Verify that all buffers are empty now, as they
1032 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1034 /* It is safe to do this crudely in an empty buffer. */
1035 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1041 /* Call early 'cause init_environment needs it. */
1043 /* Set defaults for several environment variables. */
1045 init_environment (argc
, argv
, skip_args
);
1051 /* Initialize environment from registry settings. */
1052 init_environment ();
1053 init_ntproc (); /* must precede init_editfns */
1056 /* egetenv is a pretty low-level facility, which may get called in
1057 many circumstances; it seems flimsy to put off initializing it
1058 until calling init_callproc. */
1059 set_process_environment ();
1060 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1061 if this is not done. Do it after set_process_environment so that we
1062 don't pollute Vprocess_environment. */
1067 init_buffer (); /* Init default directory of main buffer */
1069 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1070 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1074 /* Erase any pre-dump messages in the message log, to avoid confusion */
1075 Lisp_Object old_log_max
;
1076 old_log_max
= Vmessage_log_max
;
1077 XSETFASTINT (Vmessage_log_max
, 0);
1078 message_dolog ("", 0, 1, 0);
1079 Vmessage_log_max
= old_log_max
;
1082 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1085 /* Intern the names of all standard functions and variables;
1086 define standard keys. */
1090 /* The basic levels of Lisp must come first */
1091 /* And data must come first of all
1092 for the sake of symbols like error-message */
1099 syms_of_floatfns ();
1103 syms_of_bytecode ();
1105 syms_of_casefiddle ();
1107 syms_of_callproc ();
1108 syms_of_category ();
1112 #ifndef NO_DIR_LIBRARY
1114 #endif /* not NO_DIR_LIBRARY */
1120 syms_of_coding (); /* This should be after syms_of_fileio. */
1121 #ifdef CLASH_DETECTION
1122 syms_of_filelock ();
1123 #endif /* CLASH_DETECTION */
1126 syms_of_keyboard ();
1131 syms_of_mocklisp ();
1139 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1140 syms_of_textprop ();
1146 #endif /* WINDOWSNT */
1149 #ifdef HAVE_X_WINDOWS
1156 #endif /* HAVE_X_WINDOWS */
1166 syms_of_w32faces ();
1167 syms_of_w32select ();
1169 #endif /* HAVE_NTGUI */
1179 keys_of_casefiddle ();
1182 keys_of_keyboard ();
1190 if (!noninteractive
)
1193 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1195 init_display (); /* Determine terminal type. init_sys_modes uses results */
1197 init_keyboard (); /* This too must precede init_sys_modes */
1199 init_vmsproc (); /* And this too. */
1201 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1205 #ifdef LISP_FLOAT_TYPE
1216 /* Handle -l loadup, args passed by Makefile. */
1217 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1218 Vtop_level
= Fcons (intern ("load"),
1219 Fcons (build_string (file
), Qnil
));
1221 /* Unless next switch is -nl, load "loadup.el" first thing. */
1222 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
1223 Vtop_level
= Fcons (intern ("load"),
1224 Fcons (build_string ("loadup.el"), Qnil
));
1225 #endif /* CANNOT_DUMP */
1232 /* If the execution TZ happens to be the same as the dump TZ,
1233 change it to some other value and then change it back,
1234 to force the underlying implementation to reload the TZ info.
1235 This is needed on implementations that load TZ info from files,
1236 since the TZ file contents may differ between dump and execution. */
1237 char *tz
= getenv ("TZ");
1238 if (tz
&& !strcmp (tz
, dump_tz
))
1248 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1249 FreeBSD. It might work on some other systems too.
1250 Give it a try and tell me if it works on your system. */
1255 extern void _mcleanup ();
1257 extern Lisp_Object
Fredraw_frame ();
1259 /* This uses Fredraw_frame because that function
1260 comes first in the Emacs executable.
1261 It might be better to use something that gives
1262 the start of the text segment, but start_of_text
1263 is not defined on all systems now. */
1264 monstartup (Fredraw_frame
, &etext
);
1273 #ifdef LOCALTIME_CACHE
1274 /* Some versions of localtime have a bug. They cache the value of the time
1275 zone rather than looking it up every time. Since localtime() is
1276 called to bolt the undumping time into the undumped emacs, this
1277 results in localtime ignoring the TZ environment variable.
1278 This flushes the new TZ value into localtime. */
1280 #endif /* defined (LOCALTIME_CACHE) */
1282 /* Enter editor command loop. This never returns. */
1287 /* Sort the args so we can find the most important ones
1288 at the beginning of argv. */
1290 /* First, here's a table of all the standard options. */
1292 struct standard_args
1300 struct standard_args standard_args
[] =
1302 { "-version", "--version", 150, 0 },
1304 { "-nl", "--no-shared-memory", 140, 0 },
1307 { "-map", "--map-data", 130, 0 },
1309 { "-t", "--terminal", 120, 1 },
1310 { "-nw", "--no-windows", 110, 0 },
1311 { "-batch", "--batch", 100, 0 },
1312 { "-help", "--help", 90, 0 },
1313 { "-d", "--display", 80, 1 },
1314 { "-display", 0, 80, 1 },
1315 { "-no-unibyte", "--no-unibyte", 71, 0 },
1316 { "-multibyte", "--multibyte", 71, 0 },
1317 { "-unibyte", "--unibyte", 70, 0 },
1318 { "-no-multibyte", "--no-multibyte", 70, 0 },
1320 { "-nl", "--no-loadup", 60, 0 },
1322 /* Now for the options handled in startup.el. */
1323 { "-q", "--no-init-file", 50, 0 },
1324 { "-no-init-file", 0, 50, 0 },
1325 { "-no-site-file", "--no-site-file", 40, 0 },
1326 { "-u", "--user", 30, 1 },
1327 { "-user", 0, 30, 1 },
1328 { "-debug-init", "--debug-init", 20, 0 },
1329 { "-i", "--icon-type", 15, 0 },
1330 { "-itype", 0, 15, 0 },
1331 { "-iconic", "--iconic", 15, 0 },
1332 { "-bg", "--background-color", 10, 1 },
1333 { "-background", 0, 10, 1 },
1334 { "-fg", "--foreground-color", 10, 1 },
1335 { "-foreground", 0, 10, 1 },
1336 { "-bd", "--border-color", 10, 1 },
1337 { "-bw", "--border-width", 10, 1 },
1338 { "-ib", "--internal-border", 10, 1 },
1339 { "-ms", "--mouse-color", 10, 1 },
1340 { "-cr", "--cursor-color", 10, 1 },
1341 { "-fn", "--font", 10, 1 },
1342 { "-font", 0, 10, 1 },
1343 { "-g", "--geometry", 10, 1 },
1344 { "-geometry", 0, 10, 1 },
1345 { "-T", "--title", 10, 1 },
1346 { "-title", 0, 10, 1 },
1347 { "-name", "--name", 10, 1 },
1348 { "-xrm", "--xrm", 10, 1 },
1349 { "-r", "--reverse-video", 5, 0 },
1351 { "-reverse", 0, 5, 0 },
1352 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1353 { "-vb", "--vertical-scroll-bars", 5, 0 },
1354 /* These have the same priority as ordinary file name args,
1355 so they are not reordered with respect to those. */
1356 { "-L", "--directory", 0, 1 },
1357 { "-directory", 0, 0, 1 },
1358 { "-l", "--load", 0, 1 },
1359 { "-load", 0, 0, 1 },
1360 { "-f", "--funcall", 0, 1 },
1361 { "-funcall", 0, 0, 1 },
1362 { "-eval", "--eval", 0, 1 },
1363 { "-find-file", "--find-file", 0, 1 },
1364 { "-visit", "--visit", 0, 1 },
1365 { "-insert", "--insert", 0, 1 },
1366 /* This should be processed after ordinary file name args and the like. */
1367 { "-kill", "--kill", -10, 0 },
1370 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1371 so that the highest priority ones come first.
1372 Do not change the order of elements of equal priority.
1373 If an option takes an argument, keep it and its argument together. */
1376 sort_args (argc
, argv
)
1380 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1381 /* For each element of argv,
1382 the corresponding element of options is:
1383 0 for an option that takes no arguments,
1384 1 for an option that takes one argument, etc.
1385 -1 for an ordinary non-option argument. */
1386 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1387 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1391 int end_of_options
= argc
;
1393 /* Categorize all the options,
1394 and figure out which argv elts are option arguments. */
1395 for (from
= 1; from
< argc
; from
++)
1399 if (argv
[from
][0] == '-')
1404 /* If we have found "--", don't consider
1405 any more arguments as options. */
1406 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1408 /* Leave the "--", and everything following it, at the end. */
1409 for (; from
< argc
; from
++)
1411 priority
[from
] = -100;
1417 /* Look for a match with a known old-fashioned option. */
1418 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1419 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1421 options
[from
] = standard_args
[i
].nargs
;
1422 priority
[from
] = standard_args
[i
].priority
;
1423 if (from
+ standard_args
[i
].nargs
>= argc
)
1424 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1425 from
+= standard_args
[i
].nargs
;
1429 /* Look for a match with a known long option.
1430 MATCH is -1 if no match so far, -2 if two or more matches so far,
1431 >= 0 (the table index of the match) if just one match so far. */
1432 if (argv
[from
][1] == '-')
1435 thislen
= strlen (argv
[from
]);
1436 equals
= index (argv
[from
], '=');
1438 thislen
= equals
- argv
[from
];
1441 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1442 if (standard_args
[i
].longname
1443 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1452 /* If we found exactly one match, use that. */
1455 options
[from
] = standard_args
[match
].nargs
;
1456 priority
[from
] = standard_args
[match
].priority
;
1457 /* If --OPTION=VALUE syntax is used,
1458 this option uses just one argv element. */
1461 if (from
+ options
[from
] >= argc
)
1462 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1463 from
+= options
[from
];
1470 /* Copy the arguments, in order of decreasing priority, to NEW. */
1475 int best_priority
= -9999;
1477 /* Find the highest priority remaining option.
1478 If several have equal priority, take the first of them. */
1479 for (from
= 1; from
< argc
; from
++)
1481 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1483 best_priority
= priority
[from
];
1486 /* Skip option arguments--they are tied to the options. */
1487 if (options
[from
] > 0)
1488 from
+= options
[from
];
1494 /* Copy the highest priority remaining option, with its args, to NEW. */
1495 new[to
++] = argv
[best
];
1496 for (i
= 0; i
< options
[best
]; i
++)
1497 new[to
++] = argv
[best
+ i
+ 1];
1499 /* Clear out this option in ARGV. */
1501 for (i
= 0; i
< options
[best
]; i
++)
1502 argv
[best
+ i
+ 1] = 0;
1505 bcopy (new, argv
, sizeof (char *) * argc
);
1512 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1513 "Exit the Emacs job and kill it.\n\
1514 If ARG is an integer, return ARG as the exit program code.\n\
1515 If ARG is a string, stuff it as keyboard input.\n\n\
1516 The value of `kill-emacs-hook', if not void,\n\
1517 is a list of functions (of no args),\n\
1518 all of which are called before Emacs is actually killed.")
1522 Lisp_Object hook
, hook1
;
1524 struct gcpro gcpro1
;
1531 if (!NILP (Vrun_hooks
) && !noninteractive
)
1532 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1536 /* Is it really necessary to do this deassign
1537 when we are going to exit anyway? */
1542 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1544 /* If we have an auto-save list file,
1545 kill it because we are exiting Emacs deliberately (not crashing).
1546 Do it after shut_down_emacs, which does an auto-save. */
1547 if (STRINGP (Vauto_save_list_file_name
))
1548 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1550 exit (INTEGERP (arg
) ? XINT (arg
)
1561 /* Perform an orderly shutdown of Emacs. Autosave any modified
1562 buffers, kill any child processes, clean up the terminal modes (if
1563 we're in the foreground), and other stuff like that. Don't perform
1564 any redisplay; this may be called when Emacs is shutting down in
1565 the background, or after its X connection has died.
1567 If SIG is a signal number, print a message for it.
1569 This is called by fatal signal handlers, X protocol error handlers,
1573 shut_down_emacs (sig
, no_x
, stuff
)
1577 /* Prevent running of hooks from now on. */
1580 /* If we are controlling the terminal, reset terminal modes */
1581 #ifdef EMACS_HAVE_TTY_PGRP
1583 int pgrp
= EMACS_GETPGRP (0);
1586 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1591 if (sig
&& sig
!= SIGTERM
)
1592 fprintf (stderr
, "Fatal error (%d).", sig
);
1600 stuff_buffered_input (stuff
);
1602 kill_buffer_processes (Qnil
);
1603 Fdo_auto_save (Qt
, Qnil
);
1605 #ifdef CLASH_DETECTION
1606 unlock_all_files ();
1610 kill_vms_processes ();
1613 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1614 #ifdef HAVE_X_WINDOWS
1615 /* It's not safe to call intern here. Maybe we are crashing. */
1616 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1617 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1618 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1620 Fx_close_current_connection ();
1621 #endif /* HAVE_X_WINDOWS */
1625 /* There is a tendency for a SIGIO signal to arrive within exit,
1626 and cause a SIGHUP because the input descriptor is already closed. */
1628 signal (SIGIO
, SIG_IGN
);
1646 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1647 "Dump current state of Emacs into data file FILENAME.\n\
1648 This function exists on systems that use HAVE_SHM.")
1650 Lisp_Object filename
;
1652 extern char my_edata
[];
1655 CHECK_STRING (filename
, 0);
1656 filename
= Fexpand_file_name (filename
, Qnil
);
1659 Vpurify_flag
= Qnil
;
1662 /* Tell malloc where start of impure now is */
1663 /* Also arrange for warnings when nearly out of space. */
1664 #ifndef SYSTEM_MALLOC
1665 memory_warnings (my_edata
, malloc_warning
);
1667 map_out_data (XSTRING (filename
)->data
);
1674 #else /* not HAVE_SHM */
1676 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1677 "Dump current state of Emacs into executable file FILENAME.\n\
1678 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1679 This is used in the file `loadup.el' when building Emacs.\n\
1681 You must run Emacs in batch mode in order to dump it.")
1683 Lisp_Object filename
, symfile
;
1685 extern char my_edata
[];
1688 int count
= specpdl_ptr
- specpdl
;
1690 if (! noninteractive
)
1691 error ("Dumping Emacs works only in batch mode");
1693 /* Bind `command-line-processed' to nil before dumping,
1694 so that the dumped Emacs will process its command line
1695 and set up to work with X windows if appropriate. */
1696 symbol
= intern ("command-line-process");
1697 specbind (symbol
, Qnil
);
1699 CHECK_STRING (filename
, 0);
1700 filename
= Fexpand_file_name (filename
, Qnil
);
1701 if (!NILP (symfile
))
1703 CHECK_STRING (symfile
, 0);
1704 if (XSTRING (symfile
)->size
)
1705 symfile
= Fexpand_file_name (symfile
, Qnil
);
1709 Vpurify_flag
= Qnil
;
1712 set_time_zone_rule (dump_tz
);
1713 #ifndef LOCALTIME_CACHE
1714 /* Force a tz reload, since set_time_zone_rule doesn't. */
1721 mapout_data (XSTRING (filename
)->data
);
1723 /* Tell malloc where start of impure now is */
1724 /* Also arrange for warnings when nearly out of space. */
1725 #ifndef SYSTEM_MALLOC
1727 /* On Windows, this was done before dumping, and that once suffices.
1728 Meanwhile, my_edata is not valid on Windows. */
1729 memory_warnings (my_edata
, malloc_warning
);
1730 #endif /* not WINDOWSNT */
1732 #ifdef DOUG_LEA_MALLOC
1733 malloc_state_ptr
= malloc_get_state ();
1735 unexec (XSTRING (filename
)->data
,
1736 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1737 #ifdef DOUG_LEA_MALLOC
1738 free (malloc_state_ptr
);
1740 #endif /* not VMS */
1744 return unbind_to (count
, Qnil
);
1747 #endif /* not HAVE_SHM */
1749 #endif /* not CANNOT_DUMP */
1756 decode_env_path (evarname
, defalt
)
1757 char *evarname
, *defalt
;
1759 register char *path
, *p
;
1760 Lisp_Object lpath
, element
, tem
;
1762 /* It's okay to use getenv here, because this function is only used
1763 to initialize variables when Emacs starts up, and isn't called
1766 path
= (char *) getenv (evarname
);
1772 /* Ensure values from the environment use the proper directory separator. */
1775 p
= alloca (strlen (path
) + 1);
1779 if ('/' == DIRECTORY_SEP
)
1780 dostounix_filename (path
);
1782 unixtodos_filename (path
);
1788 p
= index (path
, SEPCHAR
);
1789 if (!p
) p
= path
+ strlen (path
);
1790 element
= (p
- path
? make_string (path
, p
- path
)
1791 : build_string ("."));
1793 /* Add /: to the front of the name
1794 if it would otherwise be treated as magic. */
1795 tem
= Ffind_file_name_handler (element
, Qt
);
1797 element
= concat2 (build_string ("/:"), element
);
1799 lpath
= Fcons (element
, lpath
);
1805 return Fnreverse (lpath
);
1811 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1812 staticpro (&Qfile_name_handler_alist
);
1816 defsubr (&Sdump_emacs_data
);
1818 defsubr (&Sdump_emacs
);
1822 defsubr (&Skill_emacs
);
1824 defsubr (&Sinvocation_name
);
1825 defsubr (&Sinvocation_directory
);
1827 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1828 "Args passed by shell to Emacs, as a list of strings.");
1830 DEFVAR_LISP ("system-type", &Vsystem_type
,
1831 "Value is symbol indicating type of operating system you are using.");
1832 Vsystem_type
= intern (SYSTEM_TYPE
);
1834 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1835 "Value is string indicating configuration Emacs was built for.");
1836 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1838 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1839 "String containing the configuration options Emacs was built with.");
1840 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1842 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1843 "Non-nil means Emacs is running without interactive terminal.");
1845 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1846 "Hook to be run whenever kill-emacs is called.\n\
1847 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1848 in other similar situations), functions placed on this hook should not\n\
1849 expect to be able to interact with the user. To ask for confirmation,\n\
1850 see `kill-emacs-query-functions' instead.");
1851 Vkill_emacs_hook
= Qnil
;
1854 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
1855 "Hook to be run whenever emacs receives a USR1 signal");
1856 Vsignal_USR1_hook
= Qnil
;
1858 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
1859 "Hook to be run whenever emacs receives a USR2 signal");
1860 Vsignal_USR2_hook
= Qnil
;
1865 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1866 "Priority for Emacs to run at.\n\
1867 This value is effective only if set before Emacs is dumped,\n\
1868 and only if the Emacs executable is installed with setuid to permit\n\
1869 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1870 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1871 before you compile Emacs, to enable the code for this feature.");
1874 DEFVAR_LISP ("path-separator", &Vpath_separator
,
1875 "The directory separator in search paths, as a string.");
1878 Vpath_separator
= make_string (&c
, 1);
1881 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1882 "The program name that was used to run Emacs.\n\
1883 Any directory names are omitted.");
1885 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1886 "The directory in which the Emacs executable was found, to run it.\n\
1887 The value is nil if that directory's name is not known.");
1889 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1890 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1891 This is non-nil when we can't find those directories in their standard\n\
1892 installed locations, but we can find them\n\
1893 near where the Emacs executable was found.");
1894 Vinstallation_directory
= Qnil
;