1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
40 #include <sys/ioctl.h>
45 #include "intervals.h"
49 #include "blockinput.h"
50 #include "syssignal.h"
52 #include "termhooks.h"
62 #include <sys/resource.h>
70 #if !defined (USG) || defined (BSD_PGRPS)
72 #define setpgrp setpgid
76 extern void malloc_warning
P_ ((char *));
77 extern void set_time_zone_rule
P_ ((char *));
79 extern char *index
P_ ((const char *, int));
82 /* Make these values available in GDB, which doesn't see macros. */
84 EMACS_INT gdb_valbits
= VALBITS
;
85 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
86 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
88 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
90 EMACS_INT gdb_data_seg_bits
= 0;
92 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
94 /* Command line args from shell, as list of strings. */
95 Lisp_Object Vcommand_line_args
;
97 /* The name under which Emacs was invoked, with any leading directory
99 Lisp_Object Vinvocation_name
;
101 /* The directory name from which Emacs was invoked. */
102 Lisp_Object Vinvocation_directory
;
104 /* The directory name in which to find subdirs such as lisp and etc.
105 nil means get them only from PATH_LOADSEARCH. */
106 Lisp_Object Vinstallation_directory
;
108 /* Hook run by `kill-emacs' before it does really anything. */
109 Lisp_Object Vkill_emacs_hook
;
111 /* An empty lisp string. To avoid having to build any other. */
112 Lisp_Object empty_string
;
115 /* Hooks for signal USR1 and USR2 handling. */
116 Lisp_Object Vsignal_USR1_hook
;
118 Lisp_Object Vsignal_USR2_hook
;
122 /* Search path separator. */
123 Lisp_Object Vpath_separator
;
125 /* Set nonzero after Emacs has started up the first time.
126 Prevents reinitialization of the Lisp world and keymaps
127 on subsequent starts. */
130 #ifdef DOUG_LEA_MALLOC
131 /* Preserves a pointer to the memory allocated that copies that
132 static data inside glibc's malloc. */
133 void *malloc_state_ptr
;
134 /* From glibc, a routine that returns a copy of the malloc internal state. */
135 extern void *malloc_get_state ();
136 /* From glibc, a routine that overwrites the malloc internal state. */
137 extern void malloc_set_state ();
138 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
139 dumping. Used to work around a bug in glibc's malloc. */
140 int malloc_using_checking
;
143 /* Variable whose value is symbol giving operating system type. */
144 Lisp_Object Vsystem_type
;
146 /* Variable whose value is string giving configuration built for. */
147 Lisp_Object Vsystem_configuration
;
149 /* Variable whose value is string giving configuration options,
150 for use when reporting bugs. */
151 Lisp_Object Vsystem_configuration_options
;
153 Lisp_Object Qfile_name_handler_alist
;
155 /* Current and previous system locales for messages and time. */
156 Lisp_Object Vsystem_messages_locale
;
157 Lisp_Object Vprevious_system_messages_locale
;
158 Lisp_Object Vsystem_time_locale
;
159 Lisp_Object Vprevious_system_time_locale
;
161 /* If non-zero, emacs should not attempt to use an window-specific code,
162 but instead should use the virtual terminal under which it was started. */
163 int inhibit_window_system
;
165 /* If nonzero, set Emacs to run at this priority. This is also used
166 in child_setup and sys_suspend to make sure subshells run at normal
167 priority; those functions have their own extern declaration. */
170 /* If non-zero, a filter or a sentinel is running. Tested to save the match
171 data on the first attempt to change it inside asynchronous code. */
172 int running_asynch_code
;
176 extern int inherited_pgroup
;
179 #ifdef HAVE_X_WINDOWS
180 /* If non-zero, -d was specified, meaning we're using some window system. */
184 /* An address near the bottom of the stack.
185 Tells GC how to save a copy of the stack. */
188 #ifdef HAVE_WINDOW_SYSTEM
189 extern Lisp_Object Vwindow_system
;
190 #endif /* HAVE_WINDOW_SYSTEM */
192 extern Lisp_Object Vauto_save_list_file_name
;
194 #ifdef USG_SHARED_LIBRARIES
195 /* If nonzero, this is the place to put the end of the writable segment
198 unsigned int bss_end
= 0;
201 /* Nonzero means running Emacs without interactive terminal. */
205 /* Value of Lisp variable `noninteractive'.
206 Normally same as C variable `noninteractive'
207 but nothing terrible happens if user sets this one. */
211 /* Save argv and argc. */
215 static void sort_args ();
216 void syms_of_emacs ();
219 Usage: %s [OPTION-OR-FILENAME]...\n\
221 Run Emacs, the extensible, customizable, self-documenting real-time\n\
222 display editor. The recommended way to start Emacs for normal editing\n\
223 is with no options at all.\n\
225 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
226 read the main documentation for these command-line arguments.\n\
228 Initialization options:\n\
230 --batch do not do interactive display; implies -q\n\
231 --debug-init enable Emacs Lisp debugger during init file\n\
232 --help display this help message and exit\n\
233 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
234 --no-init-file, -q load neither ~/.emacs nor default.el\n\
235 --no-shared-memory, -nl do not use shared memory\n\
236 --no-site-file do not load site-start.el\n\
237 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
238 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
239 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
240 --user, -u USER load ~USER/.emacs instead of your own\n\
241 --version display version information and exit\n\
245 FILE visit FILE using find-file\n\
246 +LINE FILE visit FILE using find-file, then go to line LINE\n\
247 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
249 --directory, -L DIR add DIR to variable load-path\n\
250 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
251 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
252 --find-file FILE visit FILE\n\
253 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
254 --insert FILE insert contents of FILE into current buffer\n\
255 --kill exit without asking for confirmation\n\
256 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
257 --visit FILE visit FILE\n\
263 --background-color, -bg COLOR window background color\n\
264 --border-color, -bd COLOR main border color\n\
265 --border-width, -bw WIDTH width of main border\n\
266 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
267 --display, -d DISPLAY use X server DISPLAY\n\
268 --font, -fn FONT default font; must be fixed-width\n\
269 --foreground-color, -fg COLOR window foreground color\n\
270 --geometry, -g GEOMETRY window geometry\n\
271 --iconic start Emacs in iconified state\n\
272 --icon-type, -i use picture of gnu for Emacs icon\n\
273 --internal-border, -ib WIDTH width between text and main border\n\
274 --line-spacing, -lsp PIXELS additional space to put between lines\n\
275 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
276 --name NAME title of main Emacs window\n\
277 --reverse-video, -r, -rv switch foreground and background\n\
278 --title, -T, -wn TITLE title for Emacs windows\n\
279 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
280 --xrm XRESOURCES set additional X resources\n\
282 You can generally also specify long option names with a single -; for\n\
283 example, -batch as well as --batch. You can use any unambiguous\n\
284 abbreviation for a --option.\n\
286 Various environment variables and window system resources also affect\n\
287 Emacs' operation. See the main documentation.\n\
291 Report bugs to %s. First, please see the Bugs\n\
292 section of the Emacs manual or the file BUGS.\n"
295 /* Signal code for the fatal signal that was received. */
296 int fatal_error_code
;
298 /* Nonzero if handling a fatal error already. */
299 int fatal_error_in_progress
;
301 /* If non-null, call this function from fatal_error_signal before
302 committing suicide. */
304 void (*fatal_error_signal_hook
) P_ ((void));
309 handle_USR1_signal (sig
)
312 struct input_event buf
;
314 bzero (&buf
, sizeof buf
);
315 buf
.kind
= USER_SIGNAL_EVENT
;
316 buf
.frame_or_window
= selected_frame
;
318 kbd_buffer_store_event (&buf
);
324 handle_USR2_signal (sig
)
327 struct input_event buf
;
329 bzero (&buf
, sizeof buf
);
330 buf
.kind
= USER_SIGNAL_EVENT
;
332 buf
.frame_or_window
= selected_frame
;
334 kbd_buffer_store_event (&buf
);
338 /* Handle bus errors, invalid instruction, etc. */
340 fatal_error_signal (sig
)
343 fatal_error_code
= sig
;
344 signal (sig
, SIG_DFL
);
346 TOTALLY_UNBLOCK_INPUT
;
348 /* If fatal error occurs in code below, avoid infinite recursion. */
349 if (! fatal_error_in_progress
)
351 fatal_error_in_progress
= 1;
353 shut_down_emacs (sig
, 0, Qnil
);
357 LIB$
STOP (SS$_ABORT
);
359 /* Signal the same code; this time it will really be fatal.
360 Remember that since we're in a signal handler, the signal we're
361 going to send is probably blocked, so we have to unblock it if we
362 want to really receive it. */
364 sigunblock (sigmask (fatal_error_code
));
367 if (fatal_error_signal_hook
)
368 fatal_error_signal_hook ();
370 kill (getpid (), fatal_error_code
);
376 /* Handler for SIGDANGER. */
378 memory_warning_signal (sig
)
381 signal (sig
, memory_warning_signal
);
383 malloc_warning ("Operating system warns that virtual memory is running low.\n");
385 /* It might be unsafe to call do_auto_save now. */
386 force_auto_save_soon ();
390 /* We define abort, rather than using it from the library,
391 so that GDB can return from a breakpoint here.
392 MSDOS has its own definition in msdos.c. */
394 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
396 #ifndef ABORT_RETURN_TYPE
397 #define ABORT_RETURN_TYPE void
403 kill (getpid (), SIGABRT
);
404 /* This shouldn't be executed, but it prevents a warning. */
410 /* Code for dealing with Lisp access to the Unix command line. */
413 init_cmdargs (argc
, argv
, skip_args
)
419 Lisp_Object name
, dir
, tem
;
420 int count
= specpdl_ptr
- specpdl
;
421 Lisp_Object raw_name
;
426 raw_name
= build_string (argv
[0]);
428 /* Add /: to the front of the name
429 if it would otherwise be treated as magic. */
430 tem
= Ffind_file_name_handler (raw_name
, Qt
);
432 raw_name
= concat2 (build_string ("/:"), raw_name
);
434 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
435 Vinvocation_directory
= Ffile_name_directory (raw_name
);
437 /* If we got no directory in argv[0], search PATH to find where
438 Emacs actually came from. */
439 if (NILP (Vinvocation_directory
))
442 int yes
= openp (Vexec_path
, Vinvocation_name
,
443 Vexec_suffixes
, &found
, 1);
446 /* Add /: to the front of the name
447 if it would otherwise be treated as magic. */
448 tem
= Ffind_file_name_handler (found
, Qt
);
450 found
= concat2 (build_string ("/:"), found
);
451 Vinvocation_directory
= Ffile_name_directory (found
);
455 if (!NILP (Vinvocation_directory
)
456 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
457 /* Emacs was started with relative path, like ./emacs.
459 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
461 Vinstallation_directory
= Qnil
;
463 if (!NILP (Vinvocation_directory
))
465 dir
= Vinvocation_directory
;
466 name
= Fexpand_file_name (Vinvocation_name
, dir
);
469 Lisp_Object tem
, lib_src_exists
;
470 Lisp_Object etc_exists
, info_exists
;
472 /* See if dir contains subdirs for use by Emacs.
473 Check for the ones that would exist in a build directory,
474 not including lisp and info. */
475 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
476 lib_src_exists
= Ffile_exists_p (tem
);
479 /* MSDOS installations frequently remove lib-src, but we still
480 must set installation-directory, or else info won't find
481 its files (it uses the value of installation-directory). */
482 tem
= Fexpand_file_name (build_string ("info"), dir
);
483 info_exists
= Ffile_exists_p (tem
);
488 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
490 tem
= Fexpand_file_name (build_string ("etc"), dir
);
491 etc_exists
= Ffile_exists_p (tem
);
492 if (!NILP (etc_exists
))
494 Vinstallation_directory
495 = Ffile_name_as_directory (dir
);
500 /* See if dir's parent contains those subdirs. */
501 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
502 lib_src_exists
= Ffile_exists_p (tem
);
506 /* See the MSDOS commentary above. */
507 tem
= Fexpand_file_name (build_string ("../info"), dir
);
508 info_exists
= Ffile_exists_p (tem
);
513 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
515 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
516 etc_exists
= Ffile_exists_p (tem
);
517 if (!NILP (etc_exists
))
519 tem
= Fexpand_file_name (build_string (".."), dir
);
520 Vinstallation_directory
521 = Ffile_name_as_directory (tem
);
526 /* If the Emacs executable is actually a link,
527 next try the dir that the link points into. */
528 tem
= Ffile_symlink_p (name
);
531 name
= Fexpand_file_name (tem
, dir
);
532 dir
= Ffile_name_directory (name
);
539 Vcommand_line_args
= Qnil
;
541 for (i
= argc
- 1; i
>= 0; i
--)
543 if (i
== 0 || i
> skip_args
)
545 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
548 unbind_to (count
, Qnil
);
551 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
552 doc
: /* Return the program name that was used to run Emacs.
553 Any directory names are omitted. */)
556 return Fcopy_sequence (Vinvocation_name
);
559 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
561 doc
: /* Return the directory name in which the Emacs executable was located. */)
564 return Fcopy_sequence (Vinvocation_directory
);
569 #ifdef LINK_CRTL_SHARE
570 #ifdef SHARABLE_LIB_BUG
571 extern noshare
char **environ
;
572 #endif /* SHARABLE_LIB_BUG */
573 #endif /* LINK_CRTL_SHARE */
577 /* A valid but unlikely value for the TZ environment value.
578 It is OK (though a bit slower) if the user actually chooses this value. */
579 static char dump_tz
[] = "UtC0";
582 #ifndef ORDINARY_LINK
583 /* We don't include crtbegin.o and crtend.o in the link,
584 so these functions and variables might be missed.
585 Provide dummy definitions to avoid error.
586 (We don't have any real constructors or destructors.) */
588 #ifndef GCC_CTORS_IN_LIBC
589 void __do_global_ctors ()
591 void __do_global_ctors_aux ()
593 void __do_global_dtors ()
595 /* Linux has a bug in its library; avoid an error. */
597 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
599 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
600 #endif /* GCC_CTORS_IN_LIBC */
603 #endif /* __GNUC__ */
604 #endif /* ORDINARY_LINK */
606 /* Test whether the next argument in ARGV matches SSTR or a prefix of
607 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
608 (the argument is supposed to have a value) store in *VALPTR either
609 the next argument or the portion of this one after the equal sign.
610 ARGV is read starting at position *SKIPPTR; this index is advanced
611 by the number of arguments used.
613 Too bad we can't just use getopt for all of this, but we don't have
614 enough information to do it right. */
617 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
630 /* Don't access argv[argc]; give up in advance. */
631 if (argc
<= *skipptr
+ 1)
634 arg
= argv
[*skipptr
+1];
637 if (strcmp (arg
, sstr
) == 0)
641 *valptr
= argv
[*skipptr
+2];
648 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
649 ? p
- arg
: strlen (arg
));
650 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
652 else if (valptr
== NULL
)
663 else if (argv
[*skipptr
+2] != NULL
)
665 *valptr
= argv
[*skipptr
+2];
675 #ifdef DOUG_LEA_MALLOC
677 /* malloc can be invoked even before main (e.g. by the dynamic
678 linker), so the dumped malloc state must be restored as early as
679 possible using this special hook. */
682 malloc_initialize_hook ()
685 extern char **environ
;
690 if (!malloc_using_checking
)
691 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
692 ignored if the heap to be restored was constructed without
693 malloc checking. Can't use unsetenv, since that calls malloc. */
697 for (p
= environ
; p
&& *p
; p
++)
698 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
707 malloc_set_state (malloc_state_ptr
);
708 free (malloc_state_ptr
);
711 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
714 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
716 #endif /* DOUG_LEA_MALLOC */
719 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
720 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
722 /* This function is used to determine an address to which bug report should
726 bug_reporting_address ()
732 temp
= Fsymbol_value (intern ("emacs-version"));
734 /* When `emacs-version' is invalid, use normal address. */
736 return REPORT_EMACS_BUG_ADDRESS
;
738 string
= XSTRING (temp
)->data
;
740 /* Count dots in `emacs-version'. */
748 /* When `emacs-version' has at least three dots, it is development or
749 pretest version of Emacs. */
750 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
756 main (argc
, argv
, envp
)
764 char stack_bottom_variable
;
765 int do_initial_setlocale
;
770 #ifdef HAVE_SETRLIMIT
776 extern Lisp_Object
*stack_base
;
780 #ifdef LINUX_SBRK_BUG
784 #ifdef RUN_TIME_REMAP
786 run_time_remap (argv
[0]);
789 sort_args (argc
, argv
);
791 while (argv
[argc
]) argc
++;
793 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
794 /* We don't know the version number unless this is a dumped Emacs.
795 So ignore --version otherwise. */
799 tem
= Fsymbol_value (intern ("emacs-version"));
802 fprintf (stderr
, "Invalid value of `emacs-version'\n");
807 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
808 printf ("Copyright (C) 2001 Free Software Foundation, Inc.\n");
809 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
810 printf ("You may redistribute copies of Emacs\n");
811 printf ("under the terms of the GNU General Public License.\n");
812 printf ("For more information about these matters, ");
813 printf ("see the file named COPYING.\n");
818 /* Map in shared memory, if we are using that. */
820 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
823 /* The shared memory was just restored, which clobbered this. */
829 /* The shared memory was just restored, which clobbered this. */
836 extern int malloc_cookie
;
837 /* This helps out unexnext.c. */
839 if (malloc_jumpstart (malloc_cookie
) != 0)
840 printf ("malloc jumpstart failed!\n");
845 /* If -map specified, map the data file in. */
848 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
852 #ifdef LINK_CRTL_SHARE
853 #ifdef SHARABLE_LIB_BUG
854 /* Bletcherous shared libraries! */
856 stdin
= fdopen (0, "r");
858 stdout
= fdopen (1, "w");
860 stderr
= fdopen (2, "w");
863 #endif /* SHARABLE_LIB_BUG */
864 #endif /* LINK_CRTL_SHARE */
867 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
868 /* Extend the stack space available.
869 Don't do that if dumping, since some systems (e.g. DJGPP)
870 might define a smaller stack limit at that time. */
873 && (!noninteractive
|| initialized
)
875 && !getrlimit (RLIMIT_STACK
, &rlim
))
878 extern int re_max_failures
;
879 /* Approximate the amount regex.c needs per unit of re_max_failures. */
880 int ratio
= 20 * sizeof (char *);
881 /* Then add 33% to cover the size of the smaller stacks that regex.c
882 successively allocates and discards, on its way to the maximum. */
884 /* Add in some extra to cover
885 what we're likely to use for other reasons. */
886 newlim
= re_max_failures
* ratio
+ 200000;
888 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
889 stack allocation routine for new process that the allocation
890 fails if stack limit is not on page boundary. So, round up the
891 new limit to page boundary. */
892 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
894 if (newlim
> rlim
.rlim_max
)
896 newlim
= rlim
.rlim_max
;
897 /* Don't let regex.c overflow the stack we have. */
898 re_max_failures
= (newlim
- 200000) / ratio
;
900 if (rlim
.rlim_cur
< newlim
)
901 rlim
.rlim_cur
= newlim
;
903 setrlimit (RLIMIT_STACK
, &rlim
);
905 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
907 /* Record (approximately) where the stack begins. */
908 stack_bottom
= &stack_bottom_variable
;
910 #ifdef USG_SHARED_LIBRARIES
912 brk ((void *)bss_end
);
917 #ifndef SYSTEM_MALLOC
918 /* Arrange to get warning messages as memory fills up. */
919 memory_warnings (0, malloc_warning
);
921 /* Call malloc at least once, to run the initial __malloc_hook.
922 Also call realloc and free for consistency. */
923 free (realloc (malloc (4), 4));
925 /* Arrange to disable interrupt input inside malloc etc. */
926 uninterrupt_malloc ();
927 #endif /* not SYSTEM_MALLOC */
930 /* We do all file input/output as binary files. When we need to translate
931 newlines, we do that manually. */
935 if (!isatty (fileno (stdin
)))
936 setmode (fileno (stdin
), O_BINARY
);
937 if (!isatty (fileno (stdout
)))
940 setmode (fileno (stdout
), O_BINARY
);
942 #else /* not __DJGPP__ >= 2 */
943 (stdin
)->_flag
&= ~_IOTEXT
;
944 (stdout
)->_flag
&= ~_IOTEXT
;
945 (stderr
)->_flag
&= ~_IOTEXT
;
946 #endif /* not __DJGPP__ >= 2 */
949 #ifdef SET_EMACS_PRIORITY
951 nice (emacs_priority
);
953 #endif /* SET_EMACS_PRIORITY */
955 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
956 The build procedure uses this while dumping, to ensure that the
957 dumped Emacs does not have its system locale tables initialized,
958 as that might cause screwups when the dumped Emacs starts up. */
960 char *lc_all
= getenv ("LC_ALL");
961 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
964 /* Set locale now, so that initial error messages are localized properly.
965 fixup_locale must wait until later, since it builds strings. */
966 if (do_initial_setlocale
)
967 setlocale (LC_ALL
, "");
969 #ifdef EXTRA_INITIALIZE
973 inhibit_window_system
= 0;
975 /* Handle the -t switch, which specifies filename to use as terminal. */
979 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
984 result
= emacs_open (term
, O_RDWR
, 0);
987 char *errstring
= strerror (errno
);
988 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
994 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
997 fprintf (stderr
, "Using %s\n", term
);
998 #ifdef HAVE_WINDOW_SYSTEM
999 inhibit_window_system
= 1; /* -t => -nw */
1006 /* Command line option --no-windows is deprecated and thus not mentioned
1007 in the manual and usage informations. */
1008 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1009 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1010 inhibit_window_system
= 1;
1012 /* Handle the -batch switch, which means don't do interactive display. */
1014 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1017 /* Handle the --help option, which gives a usage message. */
1018 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1020 printf (USAGE1
, argv
[0]);
1022 printf (USAGE3
, bug_reporting_address ());
1026 if (! noninteractive
)
1031 inherited_pgroup
= EMACS_GETPGRP (0);
1032 setpgrp (0, getpid ());
1035 #if defined (USG5) && defined (INTERRUPT_INPUT)
1043 /* Don't catch SIGHUP if dumping. */
1050 sigblock (sigmask (SIGHUP
));
1051 /* In --batch mode, don't catch SIGHUP if already ignored.
1052 That makes nohup work. */
1053 if (! noninteractive
1054 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1055 signal (SIGHUP
, fatal_error_signal
);
1056 sigunblock (sigmask (SIGHUP
));
1061 ! noninteractive
|| initialized
1067 /* Don't catch these signals in batch mode if dumping.
1068 On some machines, this sets static data that would make
1069 signal fail to work right when the dumped Emacs is run. */
1070 signal (SIGQUIT
, fatal_error_signal
);
1071 signal (SIGILL
, fatal_error_signal
);
1072 signal (SIGTRAP
, fatal_error_signal
);
1074 signal (SIGUSR1
, handle_USR1_signal
);
1076 signal (SIGUSR2
, handle_USR2_signal
);
1080 signal (SIGABRT
, fatal_error_signal
);
1083 signal (SIGHWE
, fatal_error_signal
);
1086 signal (SIGPRE
, fatal_error_signal
);
1089 signal (SIGORE
, fatal_error_signal
);
1092 signal (SIGUME
, fatal_error_signal
);
1095 signal (SIGDLK
, fatal_error_signal
);
1098 signal (SIGCPULIM
, fatal_error_signal
);
1101 /* This is missing on some systems - OS/2, for example. */
1102 signal (SIGIOT
, fatal_error_signal
);
1105 signal (SIGEMT
, fatal_error_signal
);
1107 signal (SIGFPE
, fatal_error_signal
);
1109 signal (SIGBUS
, fatal_error_signal
);
1111 signal (SIGSEGV
, fatal_error_signal
);
1113 signal (SIGSYS
, fatal_error_signal
);
1115 signal (SIGTERM
, fatal_error_signal
);
1117 signal (SIGXCPU
, fatal_error_signal
);
1120 signal (SIGXFSZ
, fatal_error_signal
);
1121 #endif /* SIGXFSZ */
1124 /* This just means available memory is getting low. */
1125 signal (SIGDANGER
, memory_warning_signal
);
1129 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1130 signal (SIGXCPU
, fatal_error_signal
);
1132 signal (SIGIOINT
, fatal_error_signal
);
1134 signal (SIGGRANT
, fatal_error_signal
);
1135 signal (SIGRETRACT
, fatal_error_signal
);
1136 signal (SIGSOUND
, fatal_error_signal
);
1137 signal (SIGMSG
, fatal_error_signal
);
1141 noninteractive1
= noninteractive
;
1143 /* Perform basic initializations (not merely interning symbols). */
1150 init_charset_once ();
1151 init_coding_once ();
1152 init_syntax_once (); /* Create standard syntax table. */
1153 init_category_once (); /* Create standard category table. */
1154 /* Must be done before init_buffer. */
1155 init_casetab_once ();
1156 init_buffer_once (); /* Create buffer table and some buffers. */
1157 init_minibuf_once (); /* Create list of minibuffers. */
1158 /* Must precede init_window_once. */
1160 /* Call syms_of_xfaces before init_window_once because that
1161 function creates Vterminal_frame. Termcap frames now use
1162 faces, and the face implementation uses some symbols as
1165 /* Call syms_of_keyboard before init_window_once because
1166 keyboard sets up symbols that include some face names that
1167 the X support will want to use. This can happen when
1168 CANNOT_DUMP is defined. */
1169 syms_of_keyboard ();
1172 /* init_window_once calls make_terminal_frame which on Mac OS
1173 creates a full-fledge output_mac type frame. This does not
1174 work correctly before syms_of_textprop, syms_of_macfns,
1175 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1176 syms_of_frame, x_term_init, and init_keyboard have already
1178 syms_of_textprop ();
1192 init_window_once (); /* Init the window system. */
1193 init_fileio_once (); /* Must precede any path manipulation. */
1198 if (do_initial_setlocale
)
1201 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1202 Vsystem_time_locale
= Vprevious_system_time_locale
;
1207 #ifdef CLASH_DETECTION
1211 running_asynch_code
= 0;
1213 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1214 but not while dumping. */
1217 ! noninteractive
|| initialized
1223 int inhibit_unibyte
= 0;
1225 /* --multibyte overrides EMACS_UNIBYTE. */
1226 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1227 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1228 inhibit_unibyte
= 1;
1230 /* --unibyte requests that we set up to do everything with single-byte
1231 buffers and strings. We need to handle this before calling
1232 init_lread, init_editfns and other places that generate Lisp strings
1233 from text in the environment. */
1234 /* Actually this shouldn't be needed as of 20.4 in a generally
1235 unibyte environment. As handa says, environment values
1236 aren't now decoded; also existing buffers are now made
1237 unibyte during startup if .emacs sets unibyte. Tested with
1238 8-bit data in environment variables and /etc/passwd, setting
1239 unibyte and Latin-1 in .emacs. -- Dave Love */
1240 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1241 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1242 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1244 Lisp_Object old_log_max
;
1245 Lisp_Object symbol
, tail
;
1247 symbol
= intern ("default-enable-multibyte-characters");
1248 Fset (symbol
, Qnil
);
1252 /* Erase pre-dump messages in *Messages* now so no abort. */
1253 old_log_max
= Vmessage_log_max
;
1254 XSETFASTINT (Vmessage_log_max
, 0);
1255 message_dolog ("", 0, 1, 0);
1256 Vmessage_log_max
= old_log_max
;
1259 for (tail
= Vbuffer_alist
; CONSP (tail
);
1264 buffer
= Fcdr (XCAR (tail
));
1265 /* Verify that all buffers are empty now, as they
1267 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1269 /* It is safe to do this crudely in an empty buffer. */
1270 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1276 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1279 #ifdef HAVE_X_WINDOWS
1280 /* Stupid kludge to catch command-line display spec. We can't
1281 handle this argument entirely in window system dependent code
1282 because we don't even know which window system dependent code
1283 to run until we've recognized this argument. */
1285 char *displayname
= 0;
1286 int count_before
= skip_args
;
1288 /* Skip any number of -d options, but only use the last one. */
1291 int count_before_this
= skip_args
;
1293 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1295 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1300 count_before
= count_before_this
;
1303 /* If we have the form --display=NAME,
1304 convert it into -d name.
1305 This requires inserting a new element into argv. */
1306 if (displayname
!= 0 && skip_args
- count_before
== 1)
1308 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1311 for (j
= 0; j
< count_before
+ 1; j
++)
1313 new[count_before
+ 1] = "-d";
1314 new[count_before
+ 2] = displayname
;
1315 for (j
= count_before
+ 2; j
<argc
; j
++)
1316 new[j
+ 1] = argv
[j
];
1320 /* Change --display to -d, when its arg is separate. */
1321 else if (displayname
!= 0 && skip_args
> count_before
1322 && argv
[count_before
+ 1][1] == '-')
1323 argv
[count_before
+ 1] = "-d";
1325 /* Don't actually discard this arg. */
1326 skip_args
= count_before
;
1330 /* argmatch must not be used after here,
1331 except when bulding temacs
1332 because the -d argument has not been skipped in skip_args. */
1335 /* Call early 'cause init_environment needs it. */
1337 /* Set defaults for several environment variables. */
1339 init_environment (argc
, argv
, skip_args
);
1345 /* Initialize environment from registry settings. */
1346 init_environment (argv
);
1347 init_ntproc (); /* must precede init_editfns. */
1350 /* egetenv is a pretty low-level facility, which may get called in
1351 many circumstances; it seems flimsy to put off initializing it
1352 until calling init_callproc. */
1353 set_process_environment ();
1354 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1355 if this is not done. Do it after set_process_environment so that we
1356 don't pollute Vprocess_environment. */
1357 /* Setting LANG here will defeat the startup locale processing... */
1362 init_buffer (); /* Init default directory of main buffer. */
1364 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1365 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1369 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1370 Lisp_Object old_log_max
;
1371 old_log_max
= Vmessage_log_max
;
1372 XSETFASTINT (Vmessage_log_max
, 0);
1373 message_dolog ("", 0, 1, 0);
1374 Vmessage_log_max
= old_log_max
;
1377 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1380 /* Intern the names of all standard functions and variables;
1381 define standard keys. */
1385 /* The basic levels of Lisp must come first. */
1386 /* And data must come first of all
1387 for the sake of symbols like error-message. */
1389 /* Called before init_window_once for Mac OS. */
1397 syms_of_floatfns ();
1401 syms_of_bytecode ();
1403 syms_of_casefiddle ();
1405 syms_of_callproc ();
1406 syms_of_category ();
1408 /* Called before init_window_once for Mac OS. */
1413 #ifndef NO_DIR_LIBRARY
1415 #endif /* not NO_DIR_LIBRARY */
1421 syms_of_coding (); /* This should be after syms_of_fileio. */
1422 #ifdef CLASH_DETECTION
1423 syms_of_filelock ();
1424 #endif /* CLASH_DETECTION */
1431 syms_of_mocklisp ();
1434 /* Called before init_window_once for Mac OS. */
1445 /* Called before init_window_once for Mac OS. */
1446 syms_of_textprop ();
1448 syms_of_composite ();
1454 #endif /* WINDOWSNT */
1457 #ifdef HAVE_X_WINDOWS
1464 #endif /* HAVE_X_WINDOWS */
1475 syms_of_w32select ();
1478 #endif /* HAVE_NTGUI */
1488 keys_of_casefiddle ();
1491 keys_of_keyboard ();
1498 if (!noninteractive
)
1501 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1503 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1506 /* Called before init_window_once for Mac OS. */
1507 init_keyboard (); /* This too must precede init_sys_modes. */
1510 init_vmsproc (); /* And this too. */
1512 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1513 #ifdef HAVE_X_WINDOWS
1515 #endif /* HAVE_X_WINDOWS */
1533 /* Handle -l loadup, args passed by Makefile. */
1534 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1535 Vtop_level
= Fcons (intern ("load"),
1536 Fcons (build_string (file
), Qnil
));
1538 /* Unless next switch is -nl, load "loadup.el" first thing. */
1540 Vtop_level
= Fcons (intern ("load"),
1541 Fcons (build_string ("loadup.el"), Qnil
));
1542 #endif /* CANNOT_DUMP */
1549 /* If the execution TZ happens to be the same as the dump TZ,
1550 change it to some other value and then change it back,
1551 to force the underlying implementation to reload the TZ info.
1552 This is needed on implementations that load TZ info from files,
1553 since the TZ file contents may differ between dump and execution. */
1554 char *tz
= getenv ("TZ");
1555 if (tz
&& !strcmp (tz
, dump_tz
))
1565 /* Set up for profiling. This is known to work on FreeBSD and
1566 GNU/Linux. It might work on some other systems too. Give it a
1567 try and tell us if it works on your system. To compile for
1568 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1569 #if defined (__FreeBSD__) || defined (__linux)
1573 extern void _mcleanup ();
1575 extern void safe_bcopy ();
1576 extern void dump_opcode_frequencies ();
1579 /* This uses safe_bcopy because that function comes first in the
1580 Emacs executable. It might be better to use something that
1581 gives the start of the text segment, but start_of_text is not
1582 defined on all systems now. */
1583 monstartup (safe_bcopy
, &etext
);
1592 #ifdef LOCALTIME_CACHE
1593 /* Some versions of localtime have a bug. They cache the value of the time
1594 zone rather than looking it up every time. Since localtime() is
1595 called to bolt the undumping time into the undumped emacs, this
1596 results in localtime ignoring the TZ environment variable.
1597 This flushes the new TZ value into localtime. */
1599 #endif /* defined (LOCALTIME_CACHE) */
1601 /* Enter editor command loop. This never returns. */
1607 /* Sort the args so we can find the most important ones
1608 at the beginning of argv. */
1610 /* First, here's a table of all the standard options. */
1612 struct standard_args
1620 struct standard_args standard_args
[] =
1622 { "-version", "--version", 150, 0 },
1624 { "-nl", "--no-shared-memory", 140, 0 },
1627 { "-map", "--map-data", 130, 0 },
1629 { "-t", "--terminal", 120, 1 },
1630 { "-nw", "--no-window-system", 110, 0 },
1631 { "-nw", "--no-windows", 110, 0 },
1632 { "-batch", "--batch", 100, 0 },
1633 { "-help", "--help", 90, 0 },
1634 { "-no-unibyte", "--no-unibyte", 83, 0 },
1635 { "-multibyte", "--multibyte", 82, 0 },
1636 { "-unibyte", "--unibyte", 81, 0 },
1637 { "-no-multibyte", "--no-multibyte", 80, 0 },
1639 { "-nl", "--no-loadup", 70, 0 },
1641 /* -d must come last before the options handled in startup.el. */
1642 { "-d", "--display", 60, 1 },
1643 { "-display", 0, 60, 1 },
1644 /* Now for the options handled in startup.el. */
1645 { "-q", "--no-init-file", 50, 0 },
1646 { "-no-init-file", 0, 50, 0 },
1647 { "-no-site-file", "--no-site-file", 40, 0 },
1648 { "-u", "--user", 30, 1 },
1649 { "-user", 0, 30, 1 },
1650 { "-debug-init", "--debug-init", 20, 0 },
1651 { "-i", "--icon-type", 15, 0 },
1652 { "-itype", 0, 15, 0 },
1653 { "-iconic", "--iconic", 15, 0 },
1654 { "-bg", "--background-color", 10, 1 },
1655 { "-background", 0, 10, 1 },
1656 { "-fg", "--foreground-color", 10, 1 },
1657 { "-foreground", 0, 10, 1 },
1658 { "-bd", "--border-color", 10, 1 },
1659 { "-bw", "--border-width", 10, 1 },
1660 { "-ib", "--internal-border", 10, 1 },
1661 { "-ms", "--mouse-color", 10, 1 },
1662 { "-cr", "--cursor-color", 10, 1 },
1663 { "-fn", "--font", 10, 1 },
1664 { "-font", 0, 10, 1 },
1665 { "-g", "--geometry", 10, 1 },
1666 { "-geometry", 0, 10, 1 },
1667 { "-T", "--title", 10, 1 },
1668 { "-title", 0, 10, 1 },
1669 { "-name", "--name", 10, 1 },
1670 { "-xrm", "--xrm", 10, 1 },
1671 { "-r", "--reverse-video", 5, 0 },
1673 { "-reverse", 0, 5, 0 },
1674 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1675 { "-vb", "--vertical-scroll-bars", 5, 0 },
1676 /* These have the same priority as ordinary file name args,
1677 so they are not reordered with respect to those. */
1678 { "-L", "--directory", 0, 1 },
1679 { "-directory", 0, 0, 1 },
1680 { "-l", "--load", 0, 1 },
1681 { "-load", 0, 0, 1 },
1682 { "-f", "--funcall", 0, 1 },
1683 { "-funcall", 0, 0, 1 },
1684 { "-eval", "--eval", 0, 1 },
1685 { "-execute", "--execute", 0, 1 },
1686 { "-find-file", "--find-file", 0, 1 },
1687 { "-visit", "--visit", 0, 1 },
1688 { "-file", "--file", 0, 1 },
1689 { "-insert", "--insert", 0, 1 },
1690 /* This should be processed after ordinary file name args and the like. */
1691 { "-kill", "--kill", -10, 0 },
1694 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1695 so that the highest priority ones come first.
1696 Do not change the order of elements of equal priority.
1697 If an option takes an argument, keep it and its argument together.
1699 If an option that takes no argument appears more
1700 than once, eliminate all but one copy of it. */
1703 sort_args (argc
, argv
)
1707 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1708 /* For each element of argv,
1709 the corresponding element of options is:
1710 0 for an option that takes no arguments,
1711 1 for an option that takes one argument, etc.
1712 -1 for an ordinary non-option argument. */
1713 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1714 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1716 int incoming_used
= 1;
1720 /* Categorize all the options,
1721 and figure out which argv elts are option arguments. */
1722 for (from
= 1; from
< argc
; from
++)
1726 if (argv
[from
][0] == '-')
1731 /* If we have found "--", don't consider
1732 any more arguments as options. */
1733 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1735 /* Leave the "--", and everything following it, at the end. */
1736 for (; from
< argc
; from
++)
1738 priority
[from
] = -100;
1744 /* Look for a match with a known old-fashioned option. */
1745 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1746 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1748 options
[from
] = standard_args
[i
].nargs
;
1749 priority
[from
] = standard_args
[i
].priority
;
1750 if (from
+ standard_args
[i
].nargs
>= argc
)
1751 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1752 from
+= standard_args
[i
].nargs
;
1756 /* Look for a match with a known long option.
1757 MATCH is -1 if no match so far, -2 if two or more matches so far,
1758 >= 0 (the table index of the match) if just one match so far. */
1759 if (argv
[from
][1] == '-')
1762 thislen
= strlen (argv
[from
]);
1763 equals
= index (argv
[from
], '=');
1765 thislen
= equals
- argv
[from
];
1768 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1769 if (standard_args
[i
].longname
1770 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1779 /* If we found exactly one match, use that. */
1782 options
[from
] = standard_args
[match
].nargs
;
1783 priority
[from
] = standard_args
[match
].priority
;
1784 /* If --OPTION=VALUE syntax is used,
1785 this option uses just one argv element. */
1788 if (from
+ options
[from
] >= argc
)
1789 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1790 from
+= options
[from
];
1797 /* Copy the arguments, in order of decreasing priority, to NEW. */
1799 while (incoming_used
< argc
)
1802 int best_priority
= -9999;
1804 /* Find the highest priority remaining option.
1805 If several have equal priority, take the first of them. */
1806 for (from
= 1; from
< argc
; from
++)
1808 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1810 best_priority
= priority
[from
];
1813 /* Skip option arguments--they are tied to the options. */
1814 if (options
[from
] > 0)
1815 from
+= options
[from
];
1821 /* Copy the highest priority remaining option, with its args, to NEW.
1822 Unless it is a duplicate of the previous one. */
1823 if (! (options
[best
] == 0
1824 && ! strcmp (new[to
- 1], argv
[best
])))
1826 new[to
++] = argv
[best
];
1827 for (i
= 0; i
< options
[best
]; i
++)
1828 new[to
++] = argv
[best
+ i
+ 1];
1831 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1833 /* Clear out this option in ARGV. */
1835 for (i
= 0; i
< options
[best
]; i
++)
1836 argv
[best
+ i
+ 1] = 0;
1839 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1843 bcopy (new, argv
, sizeof (char *) * argc
);
1850 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1851 doc
: /* Exit the Emacs job and kill it.
1852 If ARG is an integer, return ARG as the exit program code.
1853 If ARG is a string, stuff it as keyboard input.
1855 The value of `kill-emacs-hook', if not void,
1856 is a list of functions (of no args),
1857 all of which are called before Emacs is actually killed. */)
1861 struct gcpro gcpro1
;
1868 if (!NILP (Vrun_hooks
) && !noninteractive
)
1869 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1873 /* Is it really necessary to do this deassign
1874 when we are going to exit anyway? */
1879 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1881 /* If we have an auto-save list file,
1882 kill it because we are exiting Emacs deliberately (not crashing).
1883 Do it after shut_down_emacs, which does an auto-save. */
1884 if (STRINGP (Vauto_save_list_file_name
))
1885 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1887 exit (INTEGERP (arg
) ? XINT (arg
)
1898 /* Perform an orderly shutdown of Emacs. Autosave any modified
1899 buffers, kill any child processes, clean up the terminal modes (if
1900 we're in the foreground), and other stuff like that. Don't perform
1901 any redisplay; this may be called when Emacs is shutting down in
1902 the background, or after its X connection has died.
1904 If SIG is a signal number, print a message for it.
1906 This is called by fatal signal handlers, X protocol error handlers,
1910 shut_down_emacs (sig
, no_x
, stuff
)
1914 /* Prevent running of hooks from now on. */
1917 /* If we are controlling the terminal, reset terminal modes. */
1918 #ifdef EMACS_HAVE_TTY_PGRP
1920 int pgrp
= EMACS_GETPGRP (0);
1923 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1928 if (sig
&& sig
!= SIGTERM
)
1929 fprintf (stderr
, "Fatal error (%d).", sig
);
1937 stuff_buffered_input (stuff
);
1939 kill_buffer_processes (Qnil
);
1940 Fdo_auto_save (Qt
, Qnil
);
1942 #ifdef CLASH_DETECTION
1943 unlock_all_files ();
1947 kill_vms_processes ();
1950 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1951 #ifdef HAVE_X_WINDOWS
1952 /* It's not safe to call intern here. Maybe we are crashing. */
1953 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1954 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1955 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1957 Fx_close_current_connection ();
1958 #endif /* HAVE_X_WINDOWS */
1962 /* There is a tendency for a SIGIO signal to arrive within exit,
1963 and cause a SIGHUP because the input descriptor is already closed. */
1965 signal (SIGIO
, SIG_IGN
);
1972 /* Do this only if terminating normally, we want glyph matrices
1973 etc. in a core dump. */
1974 if (sig
== 0 || sig
== SIGTERM
)
1976 check_glyph_memory ();
1977 check_message_stack ();
1991 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1992 doc
: /* Dump current state of Emacs into data file FILENAME.
1993 This function exists on systems that use HAVE_SHM. */)
1995 Lisp_Object filename
;
1997 extern char my_edata
[];
2001 CHECK_STRING (filename
);
2002 filename
= Fexpand_file_name (filename
, Qnil
);
2005 Vpurify_flag
= Qnil
;
2008 /* Tell malloc where start of impure now is. */
2009 /* Also arrange for warnings when nearly out of space. */
2010 #ifndef SYSTEM_MALLOC
2011 memory_warnings (my_edata
, malloc_warning
);
2013 map_out_data (XSTRING (filename
)->data
);
2020 #else /* not HAVE_SHM */
2022 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2023 doc
: /* Dump current state of Emacs into executable file FILENAME.
2024 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2025 This is used in the file `loadup.el' when building Emacs.
2027 You must run Emacs in batch mode in order to dump it. */)
2029 Lisp_Object filename
, symfile
;
2031 extern char my_edata
[];
2034 int count
= BINDING_STACK_SIZE ();
2038 if (! noninteractive
)
2039 error ("Dumping Emacs works only in batch mode");
2041 /* Bind `command-line-processed' to nil before dumping,
2042 so that the dumped Emacs will process its command line
2043 and set up to work with X windows if appropriate. */
2044 symbol
= intern ("command-line-process");
2045 specbind (symbol
, Qnil
);
2047 CHECK_STRING (filename
);
2048 filename
= Fexpand_file_name (filename
, Qnil
);
2049 if (!NILP (symfile
))
2051 CHECK_STRING (symfile
);
2052 if (XSTRING (symfile
)->size
)
2053 symfile
= Fexpand_file_name (symfile
, Qnil
);
2057 Vpurify_flag
= Qnil
;
2060 set_time_zone_rule (dump_tz
);
2061 #ifndef LOCALTIME_CACHE
2062 /* Force a tz reload, since set_time_zone_rule doesn't. */
2069 mapout_data (XSTRING (filename
)->data
);
2071 /* Tell malloc where start of impure now is. */
2072 /* Also arrange for warnings when nearly out of space. */
2073 #ifndef SYSTEM_MALLOC
2075 /* On Windows, this was done before dumping, and that once suffices.
2076 Meanwhile, my_edata is not valid on Windows. */
2077 memory_warnings (my_edata
, malloc_warning
);
2078 #endif /* not WINDOWSNT */
2080 #ifdef DOUG_LEA_MALLOC
2081 malloc_state_ptr
= malloc_get_state ();
2084 #ifdef USE_MMAP_FOR_BUFFERS
2087 unexec (XSTRING (filename
)->data
,
2088 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
2089 #ifdef USE_MMAP_FOR_BUFFERS
2092 #ifdef DOUG_LEA_MALLOC
2093 free (malloc_state_ptr
);
2095 #endif /* not VMS */
2099 return unbind_to (count
, Qnil
);
2102 #endif /* not HAVE_SHM */
2104 #endif /* not CANNOT_DUMP */
2107 /* Recover from setlocale (LC_ALL, ""). */
2111 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2112 so that numbers are read and printed properly for Emacs Lisp. */
2113 setlocale (LC_NUMERIC
, "C");
2116 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2119 synchronize_locale (category
, plocale
, desired_locale
)
2121 Lisp_Object
*plocale
;
2122 Lisp_Object desired_locale
;
2124 if (! EQ (*plocale
, desired_locale
))
2126 *plocale
= desired_locale
;
2127 setlocale (category
, (STRINGP (desired_locale
)
2128 ? (char *)(XSTRING (desired_locale
)->data
)
2133 /* Set system time locale to match Vsystem_time_locale, if possible. */
2135 synchronize_system_time_locale ()
2137 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2138 Vsystem_time_locale
);
2141 /* Set system messages locale to match Vsystem_messages_locale, if
2144 synchronize_system_messages_locale ()
2147 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2148 Vsystem_messages_locale
);
2151 #endif /* HAVE_SETLOCALE */
2158 decode_env_path (evarname
, defalt
)
2159 char *evarname
, *defalt
;
2161 register char *path
, *p
;
2162 Lisp_Object lpath
, element
, tem
;
2164 /* It's okay to use getenv here, because this function is only used
2165 to initialize variables when Emacs starts up, and isn't called
2168 path
= (char *) getenv (evarname
);
2174 /* Ensure values from the environment use the proper directory separator. */
2177 p
= alloca (strlen (path
) + 1);
2181 if ('/' == DIRECTORY_SEP
)
2182 dostounix_filename (path
);
2184 unixtodos_filename (path
);
2190 p
= index (path
, SEPCHAR
);
2191 if (!p
) p
= path
+ strlen (path
);
2192 element
= (p
- path
? make_string (path
, p
- path
)
2193 : build_string ("."));
2195 /* Add /: to the front of the name
2196 if it would otherwise be treated as magic. */
2197 tem
= Ffind_file_name_handler (element
, Qt
);
2199 element
= concat2 (build_string ("/:"), element
);
2201 lpath
= Fcons (element
, lpath
);
2207 return Fnreverse (lpath
);
2213 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2214 staticpro (&Qfile_name_handler_alist
);
2218 defsubr (&Sdump_emacs_data
);
2220 defsubr (&Sdump_emacs
);
2224 defsubr (&Skill_emacs
);
2226 defsubr (&Sinvocation_name
);
2227 defsubr (&Sinvocation_directory
);
2229 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2230 doc
: /* Args passed by shell to Emacs, as a list of strings. */);
2232 DEFVAR_LISP ("system-type", &Vsystem_type
,
2233 doc
: /* Value is symbol indicating type of operating system you are using. */);
2234 Vsystem_type
= intern (SYSTEM_TYPE
);
2236 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2237 doc
: /* Value is string indicating configuration Emacs was built for.
2238 On MS-Windows, the value reflects the OS flavor and version on which
2239 Emacs is running. */);
2240 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2242 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2243 doc
: /* String containing the configuration options Emacs was built with. */);
2244 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2246 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2247 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2249 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2250 doc
: /* Hook to be run whenever kill-emacs is called.
2251 Since kill-emacs may be invoked when the terminal is disconnected (or
2252 in other similar situations), functions placed on this hook should not
2253 expect to be able to interact with the user. To ask for confirmation,
2254 see `kill-emacs-query-functions' instead. */);
2255 Vkill_emacs_hook
= Qnil
;
2257 empty_string
= build_string ("");
2258 staticpro (&empty_string
);
2261 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2262 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2263 Vsignal_USR1_hook
= Qnil
;
2265 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2266 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2267 Vsignal_USR2_hook
= Qnil
;
2272 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2273 doc
: /* Priority for Emacs to run at.
2274 This value is effective only if set before Emacs is dumped,
2275 and only if the Emacs executable is installed with setuid to permit
2276 it to change priority. (Emacs sets its uid back to the real uid.)
2277 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2278 before you compile Emacs, to enable the code for this feature. */);
2281 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2282 doc
: /* The directory separator in search paths, as a string. */);
2285 Vpath_separator
= make_string (&c
, 1);
2288 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2289 doc
: /* The program name that was used to run Emacs.
2290 Any directory names are omitted. */);
2292 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2293 doc
: /* The directory in which the Emacs executable was found, to run it.
2294 The value is nil if that directory's name is not known. */);
2296 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2297 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2298 This is non-nil when we can't find those directories in their standard
2299 installed locations, but we can find them
2300 near where the Emacs executable was found. */);
2301 Vinstallation_directory
= Qnil
;
2303 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2304 doc
: /* System locale for messages. */);
2305 Vsystem_messages_locale
= Qnil
;
2307 DEFVAR_LISP ("previous-system-messages-locale",
2308 &Vprevious_system_messages_locale
,
2309 doc
: /* Most recently used system locale for messages. */);
2310 Vprevious_system_messages_locale
= Qnil
;
2312 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2313 doc
: /* System locale for time. */);
2314 Vsystem_time_locale
= Qnil
;
2316 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2317 doc
: /* Most recently used system locale for time. */);
2318 Vprevious_system_time_locale
= Qnil
;