1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
4 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 This file is part of GNU Emacs.
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
28 #include <sys/types.h>
38 #include <windows.h> /* just for w32.h */
40 #include "w32heap.h" /* for prototype of sbrk */
43 #ifdef NS_IMPL_GNUSTEP
44 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
45 #include <GNUstepBase/GSConfig.h>
50 #include "intervals.h"
55 #include "blockinput.h"
56 #include "syssignal.h"
59 #include "termhooks.h"
77 #include <sys/resource.h>
80 #ifdef HAVE_PERSONALITY_LINUX32
81 #include <sys/personality.h>
91 #define setpgrp setpgid
95 /* If you change the following line, remember to update
96 msdos/mainmake.v2 which gleans the Emacs version from it! */
97 static const char emacs_copyright
[] = "Copyright (C) 2010 Free Software Foundation, Inc.";
98 static const char emacs_version
[] = "24.0.50";
100 /* Make these values available in GDB, which doesn't see macros. */
107 #ifndef USE_LISP_UNION_TYPE
108 int gdb_use_union
= 0;
110 int gdb_use_union
= 1;
112 EMACS_INT gdb_valbits
= VALBITS
;
113 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
114 #if defined (DATA_SEG_BITS) && ! defined (USE_LSB_TAG)
115 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
117 EMACS_INT gdb_data_seg_bits
= 0;
119 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
120 EMACS_INT gdb_array_mark_flag
= ARRAY_MARK_FLAG
;
121 /* GDB might say "No enum type named pvec_type" if we don't have at
122 least one symbol with that type, and then xbacktrace could fail. */
123 enum pvec_type gdb_pvec_type
= PVEC_TYPE_MASK
;
125 /* Command line args from shell, as list of strings. */
126 Lisp_Object Vcommand_line_args
;
128 /* The name under which Emacs was invoked, with any leading directory
130 Lisp_Object Vinvocation_name
;
132 /* The directory name from which Emacs was invoked. */
133 Lisp_Object Vinvocation_directory
;
135 /* The directory name in which to find subdirs such as lisp and etc.
136 nil means get them only from PATH_LOADSEARCH. */
137 Lisp_Object Vinstallation_directory
;
139 /* The values of `current-time' before and after Emacs initialization. */
140 Lisp_Object Vbefore_init_time
, Vafter_init_time
;
142 /* Hook run by `kill-emacs' before it does really anything. */
143 Lisp_Object Vkill_emacs_hook
;
145 /* Empty lisp strings. To avoid having to build any others. */
146 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
148 /* Search path separator. */
149 Lisp_Object Vpath_separator
;
151 /* Set nonzero after Emacs has started up the first time.
152 Prevents reinitialization of the Lisp world and keymaps
153 on subsequent starts. */
156 #ifdef DOUG_LEA_MALLOC
157 /* Preserves a pointer to the memory allocated that copies that
158 static data inside glibc's malloc. */
159 void *malloc_state_ptr
;
160 /* From glibc, a routine that returns a copy of the malloc internal state. */
161 extern void *malloc_get_state (void);
162 /* From glibc, a routine that overwrites the malloc internal state. */
163 extern int malloc_set_state (void*);
164 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
165 dumping. Used to work around a bug in glibc's malloc. */
166 int malloc_using_checking
;
169 /* Variable whose value is symbol giving operating system type. */
170 Lisp_Object Vsystem_type
;
172 /* Variable whose value is string giving configuration built for. */
173 Lisp_Object Vsystem_configuration
;
175 /* Variable whose value is string giving configuration options,
176 for use when reporting bugs. */
177 Lisp_Object Vsystem_configuration_options
;
179 Lisp_Object Qfile_name_handler_alist
;
181 /* Current and previous system locales for messages and time. */
182 Lisp_Object Vsystem_messages_locale
;
183 Lisp_Object Vprevious_system_messages_locale
;
184 Lisp_Object Vsystem_time_locale
;
185 Lisp_Object Vprevious_system_time_locale
;
187 /* Copyright and version info. The version number may be updated by
189 Lisp_Object Vemacs_copyright
, Vemacs_version
;
191 /* Alist of external libraries and files implementing them. */
192 Lisp_Object Vdynamic_library_alist
;
194 /* If non-zero, emacs should not attempt to use a window-specific code,
195 but instead should use the virtual terminal under which it was started. */
196 int inhibit_window_system
;
198 /* If nonzero, set Emacs to run at this priority. This is also used
199 in child_setup and sys_suspend to make sure subshells run at normal
200 priority; those functions have their own extern declaration. */
201 EMACS_INT emacs_priority
;
203 /* If non-zero, a filter or a sentinel is running. Tested to save the match
204 data on the first attempt to change it inside asynchronous code. */
205 int running_asynch_code
;
207 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
208 /* If non-zero, -d was specified, meaning we're using some window system. */
212 /* An address near the bottom of the stack.
213 Tells GC how to save a copy of the stack. */
216 /* The address where the heap starts (from the first sbrk (0) call). */
217 static void *my_heap_start
;
219 /* The gap between BSS end and heap start as far as we can tell. */
220 static unsigned long heap_bss_diff
;
222 /* If the gap between BSS end and heap start is larger than this
223 output a warning in dump-emacs. */
224 #define MAX_HEAP_BSS_DIFF (1024*1024)
226 /* Nonzero means running Emacs without interactive terminal. */
230 /* Value of Lisp variable `noninteractive'.
231 Normally same as C variable `noninteractive'
232 but nothing terrible happens if user sets this one. */
236 /* Nonzero means Emacs was run in --quick mode. */
237 int inhibit_x_resources
;
239 /* Name for the server started by the daemon.*/
240 static char *daemon_name
;
242 /* Pipe used to send exit notification to the daemon parent at
246 /* Save argv and argc. */
250 static void sort_args (int argc
, char **argv
);
251 void syms_of_emacs (void);
253 /* MSVC needs each string be shorter than 2048 bytes, so the usage
254 strings below are split to not overflow this limit. */
256 Usage: %s [OPTION-OR-FILENAME]...\n\
258 Run Emacs, the extensible, customizable, self-documenting real-time\n\
259 display editor. The recommended way to start Emacs for normal editing\n\
260 is with no options at all.\n\
262 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
263 read the main documentation for these command-line arguments.\n\
265 Initialization options:\n\
267 --batch do not do interactive display; implies -q\n\
268 --chdir DIR change to directory DIR\n\
269 --daemon start a server in the background\n\
270 --debug-init enable Emacs Lisp debugger for init file\n\
271 --display, -d DISPLAY use X server DISPLAY\n\
272 --no-desktop do not load a saved desktop\n\
273 --no-init-file, -q load neither ~/.emacs nor default.el\n\
274 --no-shared-memory, -nl do not use shared memory\n\
275 --no-site-file do not load site-start.el\n\
276 --no-splash do not display a splash screen on startup\n\
277 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
278 --quick, -Q equivalent to -q --no-site-file --no-splash\n\
279 --script FILE run FILE as an Emacs Lisp script\n\
280 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
281 --user, -u USER load ~USER/.emacs instead of your own\n\
287 FILE visit FILE using find-file\n\
288 +LINE go to line LINE in next FILE\n\
289 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
290 --directory, -L DIR add DIR to variable load-path\n\
291 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
292 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
293 --file FILE visit FILE using find-file\n\
294 --find-file FILE visit FILE using find-file\n\
295 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
296 --insert FILE insert contents of FILE into current buffer\n\
297 --kill exit without asking for confirmation\n\
298 --load, -l FILE load Emacs Lisp FILE using the load function\n\
299 --visit FILE visit FILE using find-file\n\
305 --background-color, -bg COLOR window background color\n\
306 --basic-display, -D disable many display features;\n\
307 used for debugging Emacs\n\
308 --border-color, -bd COLOR main border color\n\
309 --border-width, -bw WIDTH width of main border\n\
310 --color, --color=MODE override color mode for character terminals;\n\
311 MODE defaults to `auto', and can also\n\
312 be `never', `auto', `always',\n\
313 or a mode name like `ansi8'\n\
314 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
315 --font, -fn FONT default font; must be fixed-width\n\
316 --foreground-color, -fg COLOR window foreground color\n\
317 --fullheight, -fh make the first frame high as the screen\n\
318 --fullscreen, -fs make first frame fullscreen\n\
319 --fullwidth, -fw make the first frame wide as the screen\n\
320 --maximized, -mm make the first frame maximized\n\
321 --geometry, -g GEOMETRY window geometry\n\
322 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
323 --iconic start Emacs in iconified state\n\
324 --internal-border, -ib WIDTH width between text and main border\n\
325 --line-spacing, -lsp PIXELS additional space to put between lines\n\
326 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
327 --name NAME title for initial Emacs frame\n\
328 --no-blinking-cursor, -nbc disable blinking cursor\n\
329 --reverse-video, -r, -rv switch foreground and background\n\
330 --title, -T TITLE title for initial Emacs frame\n\
331 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
332 --xrm XRESOURCES set additional X resources\n\
333 --parent-id XID set parent window\n\
334 --help display this help and exit\n\
335 --version output version information and exit\n\
339 You can generally also specify long option names with a single -; for\n\
340 example, -batch as well as --batch. You can use any unambiguous\n\
341 abbreviation for a --option.\n\
343 Various environment variables and window system resources also affect\n\
344 Emacs' operation. See the main documentation.\n\
346 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
347 section of the Emacs manual or the file BUGS.\n"
350 /* Signal code for the fatal signal that was received. */
351 int fatal_error_code
;
353 /* Nonzero if handling a fatal error already. */
354 int fatal_error_in_progress
;
356 /* If non-null, call this function from fatal_error_signal before
357 committing suicide. */
359 void (*fatal_error_signal_hook
) (void);
361 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
362 /* When compiled with GTK and running under Gnome,
363 multiple threads may be created. Keep track of our main
364 thread to make sure signals are delivered to it (see syssignal.h). */
366 pthread_t main_thread
;
370 /* Handle bus errors, invalid instruction, etc. */
372 fatal_error_signal (int sig
)
374 SIGNAL_THREAD_CHECK (sig
);
375 fatal_error_code
= sig
;
376 signal (sig
, SIG_DFL
);
378 TOTALLY_UNBLOCK_INPUT
;
380 /* If fatal error occurs in code below, avoid infinite recursion. */
381 if (! fatal_error_in_progress
)
383 fatal_error_in_progress
= 1;
385 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
386 Fkill_emacs (make_number (sig
));
388 shut_down_emacs (sig
, 0, Qnil
);
391 /* Signal the same code; this time it will really be fatal.
392 Remember that since we're in a signal handler, the signal we're
393 going to send is probably blocked, so we have to unblock it if we
394 want to really receive it. */
396 sigunblock (sigmask (fatal_error_code
));
399 if (fatal_error_signal_hook
)
400 fatal_error_signal_hook ();
402 kill (getpid (), fatal_error_code
);
407 /* Handler for SIGDANGER. */
409 memory_warning_signal (sig
)
412 signal (sig
, memory_warning_signal
);
413 SIGNAL_THREAD_CHECK (sig
);
415 malloc_warning ("Operating system warns that virtual memory is running low.\n");
417 /* It might be unsafe to call do_auto_save now. */
418 force_auto_save_soon ();
422 /* We define abort, rather than using it from the library,
423 so that GDB can return from a breakpoint here.
424 MSDOS has its own definition in msdos.c. */
426 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
431 kill (getpid (), SIGABRT
);
432 /* This shouldn't be executed, but it prevents a warning. */
438 /* Code for dealing with Lisp access to the Unix command line. */
441 init_cmdargs (int argc
, char **argv
, int skip_args
)
444 Lisp_Object name
, dir
, tem
;
445 int count
= SPECPDL_INDEX ();
446 Lisp_Object raw_name
;
451 raw_name
= build_string (argv
[0]);
453 /* Add /: to the front of the name
454 if it would otherwise be treated as magic. */
455 tem
= Ffind_file_name_handler (raw_name
, Qt
);
457 raw_name
= concat2 (build_string ("/:"), raw_name
);
459 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
460 Vinvocation_directory
= Ffile_name_directory (raw_name
);
462 /* If we got no directory in argv[0], search PATH to find where
463 Emacs actually came from. */
464 if (NILP (Vinvocation_directory
))
467 int yes
= openp (Vexec_path
, Vinvocation_name
,
468 Vexec_suffixes
, &found
, make_number (X_OK
));
471 /* Add /: to the front of the name
472 if it would otherwise be treated as magic. */
473 tem
= Ffind_file_name_handler (found
, Qt
);
475 found
= concat2 (build_string ("/:"), found
);
476 Vinvocation_directory
= Ffile_name_directory (found
);
480 if (!NILP (Vinvocation_directory
)
481 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
482 /* Emacs was started with relative path, like ./emacs.
484 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
486 Vinstallation_directory
= Qnil
;
488 if (!NILP (Vinvocation_directory
))
490 dir
= Vinvocation_directory
;
491 name
= Fexpand_file_name (Vinvocation_name
, dir
);
494 Lisp_Object tem
, lib_src_exists
;
495 Lisp_Object etc_exists
, info_exists
;
497 /* See if dir contains subdirs for use by Emacs.
498 Check for the ones that would exist in a build directory,
499 not including lisp and info. */
500 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
501 lib_src_exists
= Ffile_exists_p (tem
);
504 /* MSDOS installations frequently remove lib-src, but we still
505 must set installation-directory, or else info won't find
506 its files (it uses the value of installation-directory). */
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 Vinstallation_directory
520 = Ffile_name_as_directory (dir
);
525 /* See if dir's parent contains those subdirs. */
526 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
527 lib_src_exists
= Ffile_exists_p (tem
);
531 /* See the MSDOS commentary above. */
532 tem
= Fexpand_file_name (build_string ("../info"), dir
);
533 info_exists
= Ffile_exists_p (tem
);
538 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
540 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
541 etc_exists
= Ffile_exists_p (tem
);
542 if (!NILP (etc_exists
))
544 tem
= Fexpand_file_name (build_string (".."), dir
);
545 Vinstallation_directory
546 = Ffile_name_as_directory (tem
);
551 /* If the Emacs executable is actually a link,
552 next try the dir that the link points into. */
553 tem
= Ffile_symlink_p (name
);
556 name
= Fexpand_file_name (tem
, dir
);
557 dir
= Ffile_name_directory (name
);
564 Vcommand_line_args
= Qnil
;
566 for (i
= argc
- 1; i
>= 0; i
--)
568 if (i
== 0 || i
> skip_args
)
569 /* For the moment, we keep arguments as is in unibyte strings.
570 They are decoded in the function command-line after we know
571 locale-coding-system. */
573 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
577 unbind_to (count
, Qnil
);
580 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
581 doc
: /* Return the program name that was used to run Emacs.
582 Any directory names are omitted. */)
585 return Fcopy_sequence (Vinvocation_name
);
588 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
590 doc
: /* Return the directory name in which the Emacs executable was located. */)
593 return Fcopy_sequence (Vinvocation_directory
);
598 /* A valid but unlikely value for the TZ environment value.
599 It is OK (though a bit slower) if the user actually chooses this value. */
600 static char dump_tz
[] = "UtC0";
603 #ifndef ORDINARY_LINK
604 /* We don't include crtbegin.o and crtend.o in the link,
605 so these functions and variables might be missed.
606 Provide dummy definitions to avoid error.
607 (We don't have any real constructors or destructors.) */
609 #ifndef GCC_CTORS_IN_LIBC
610 void __do_global_ctors (void)
612 void __do_global_ctors_aux (void)
614 void __do_global_dtors (void)
616 /* GNU/Linux has a bug in its library; avoid an error. */
618 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
620 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
621 #endif /* GCC_CTORS_IN_LIBC */
624 #endif /* __GNUC__ */
625 #endif /* ORDINARY_LINK */
627 /* Test whether the next argument in ARGV matches SSTR or a prefix of
628 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
629 (the argument is supposed to have a value) store in *VALPTR either
630 the next argument or the portion of this one after the equal sign.
631 ARGV is read starting at position *SKIPPTR; this index is advanced
632 by the number of arguments used.
634 Too bad we can't just use getopt for all of this, but we don't have
635 enough information to do it right. */
638 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
, int minlen
, char **valptr
, int *skipptr
)
644 /* Don't access argv[argc]; give up in advance. */
645 if (argc
<= *skipptr
+ 1)
648 arg
= argv
[*skipptr
+1];
651 if (strcmp (arg
, sstr
) == 0)
655 *valptr
= argv
[*skipptr
+2];
662 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
663 ? p
- arg
: strlen (arg
));
664 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
666 else if (valptr
== NULL
)
677 else if (argv
[*skipptr
+2] != NULL
)
679 *valptr
= argv
[*skipptr
+2];
689 #ifdef DOUG_LEA_MALLOC
691 /* malloc can be invoked even before main (e.g. by the dynamic
692 linker), so the dumped malloc state must be restored as early as
693 possible using this special hook. */
696 malloc_initialize_hook (void)
699 extern char **environ
;
704 if (!malloc_using_checking
)
705 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
706 ignored if the heap to be restored was constructed without
707 malloc checking. Can't use unsetenv, since that calls malloc. */
711 for (p
= environ
; p
&& *p
; p
++)
712 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
721 malloc_set_state (malloc_state_ptr
);
722 #ifndef XMALLOC_OVERRUN_CHECK
723 free (malloc_state_ptr
);
728 if (my_heap_start
== 0)
729 my_heap_start
= sbrk (0);
730 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
734 void (*__malloc_initialize_hook
) (void) = malloc_initialize_hook
;
736 #endif /* DOUG_LEA_MALLOC */
741 main (int argc
, char **argv
)
746 char stack_bottom_variable
;
747 int do_initial_setlocale
;
749 #ifdef HAVE_SETRLIMIT
764 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
765 /* This is used by the Cygwin build. */
766 setenv ("G_SLICE", "always-malloc", 1);
771 extern char my_endbss
[];
772 extern char *my_endbss_static
;
774 if (my_heap_start
== 0)
775 my_heap_start
= sbrk (0);
777 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
780 #ifdef RUN_TIME_REMAP
782 run_time_remap (argv
[0]);
785 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
788 unexec_init_emacs_zone ();
791 sort_args (argc
, argv
);
793 while (argv
[argc
]) argc
++;
795 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
797 const char *version
, *copyright
;
800 Lisp_Object tem
, tem2
;
801 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
802 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
805 fprintf (stderr
, "Invalid value of `emacs-version'\n");
810 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
815 version
= SDATA (tem
);
816 copyright
= SDATA (tem2
);
821 version
= emacs_version
;
822 copyright
= emacs_copyright
;
824 printf ("GNU Emacs %s\n", version
);
825 printf ("%s\n", copyright
);
826 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
827 printf ("You may redistribute copies of Emacs\n");
828 printf ("under the terms of the GNU General Public License.\n");
829 printf ("For more information about these matters, ");
830 printf ("see the file named COPYING.\n");
834 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
835 if (chdir (ch_to_dir
) == -1)
837 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
838 argv
[0], ch_to_dir
, strerror (errno
));
843 #ifdef HAVE_PERSONALITY_LINUX32
845 && (strcmp (argv
[argc
-1], "dump") == 0
846 || strcmp (argv
[argc
-1], "bootstrap") == 0)
847 && ! getenv ("EMACS_HEAP_EXEC"))
849 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
850 /* Set this so we only do this once. */
853 /* A flag to turn off address randomization which is introduced
854 in linux kernel shipped with fedora core 4 */
855 #define ADD_NO_RANDOMIZE 0x0040000
856 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
857 #undef ADD_NO_RANDOMIZE
859 execvp (argv
[0], argv
);
861 /* If the exec fails, try to dump anyway. */
864 #endif /* HAVE_PERSONALITY_LINUX32 */
866 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
867 /* Extend the stack space available.
868 Don't do that if dumping, since some systems (e.g. DJGPP)
869 might define a smaller stack limit at that time. */
872 && (!noninteractive
|| initialized
)
874 && !getrlimit (RLIMIT_STACK
, &rlim
))
877 extern size_t re_max_failures
;
878 /* Approximate the amount regex.c needs per unit of re_max_failures. */
879 int ratio
= 20 * sizeof (char *);
880 /* Then add 33% to cover the size of the smaller stacks that regex.c
881 successively allocates and discards, on its way to the maximum. */
883 /* Add in some extra to cover
884 what we're likely to use for other reasons. */
885 newlim
= re_max_failures
* ratio
+ 200000;
887 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
888 stack allocation routine for new process that the allocation
889 fails if stack limit is not on page boundary. So, round up the
890 new limit to page boundary. */
891 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
893 if (newlim
> rlim
.rlim_max
)
895 newlim
= rlim
.rlim_max
;
896 /* Don't let regex.c overflow the stack we have. */
897 re_max_failures
= (newlim
- 200000) / ratio
;
899 if (rlim
.rlim_cur
< newlim
)
900 rlim
.rlim_cur
= newlim
;
902 setrlimit (RLIMIT_STACK
, &rlim
);
904 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
906 /* Record (approximately) where the stack begins. */
907 stack_bottom
= &stack_bottom_variable
;
911 #ifndef SYSTEM_MALLOC
912 /* Arrange to get warning messages as memory fills up. */
913 memory_warnings (0, malloc_warning
);
915 /* Call malloc at least once, to run the initial __malloc_hook.
916 Also call realloc and free for consistency. */
917 free (realloc (malloc (4), 4));
920 /* Arrange to disable interrupt input inside malloc etc. */
921 uninterrupt_malloc ();
922 # endif /* not SYNC_INPUT */
923 #endif /* not SYSTEM_MALLOC */
925 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
926 main_thread
= pthread_self ();
927 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
929 #if defined (MSDOS) || defined (WINDOWSNT)
930 /* We do all file input/output as binary files. When we need to translate
931 newlines, we do that manually. */
933 #endif /* MSDOS || WINDOWSNT */
936 if (!isatty (fileno (stdin
)))
937 setmode (fileno (stdin
), O_BINARY
);
938 if (!isatty (fileno (stdout
)))
941 setmode (fileno (stdout
), O_BINARY
);
945 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
946 The build procedure uses this while dumping, to ensure that the
947 dumped Emacs does not have its system locale tables initialized,
948 as that might cause screwups when the dumped Emacs starts up. */
950 char *lc_all
= getenv ("LC_ALL");
951 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
954 /* Set locale now, so that initial error messages are localized properly.
955 fixup_locale must wait until later, since it builds strings. */
956 if (do_initial_setlocale
)
957 setlocale (LC_ALL
, "");
959 inhibit_window_system
= 0;
961 /* Handle the -t switch, which specifies filename to use as terminal. */
965 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
970 result
= emacs_open (term
, O_RDWR
, 0);
973 char *errstring
= strerror (errno
);
974 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
980 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
983 fprintf (stderr
, "Using %s\n", term
);
984 #ifdef HAVE_WINDOW_SYSTEM
985 inhibit_window_system
= 1; /* -t => -nw */
992 /* Command line option --no-windows is deprecated and thus not mentioned
993 in the manual and usage informations. */
994 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
995 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
996 inhibit_window_system
= 1;
998 /* Handle the -batch switch, which means don't do interactive display. */
1000 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1003 Vundo_outer_limit
= Qnil
;
1005 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1007 noninteractive
= 1; /* Set batch mode. */
1008 /* Convert --script to -scriptload, un-skip it, and sort again
1009 so that it will be handled in proper sequence. */
1010 /* FIXME broken for --script=FILE - is that supposed to work? */
1011 argv
[skip_args
- 1] = "-scriptload";
1013 sort_args (argc
, argv
);
1016 /* Handle the --help option, which gives a usage message. */
1017 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1019 printf (USAGE1
, argv
[0], USAGE2
);
1025 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
1026 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
1031 /* Start as a daemon: fork a new child process which will run the
1032 rest of the initialization code, then exit.
1034 Detaching a daemon requires the following steps:
1038 - close the tty file-descriptors
1040 We only want to do the last 2 steps once the daemon is ready to
1041 serve requests, i.e. after loading .emacs (initialization).
1042 OTOH initialization may start subprocesses (e.g. ispell) and these
1043 should be run from the proper process (the one that will end up
1044 running as daemon) and with the proper "session id" in order for
1045 them to keep working after detaching, so fork and setsid need to be
1046 performed before initialization.
1048 We want to avoid exiting before the server socket is ready, so
1049 use a pipe for synchronization. The parent waits for the child
1050 to close its end of the pipe (using `daemon-initialized')
1052 if (pipe (daemon_pipe
) == -1)
1054 fprintf (stderr
, "Cannot pipe!\n");
1058 #ifndef NS_IMPL_COCOA
1060 #else /* NS_IMPL_COCOA */
1061 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1062 forked process: http://developer.apple.com/ReleaseNotes/
1063 CoreFoundation/CoreFoundation.html)
1064 We mark being in the exec'd process by a daemon name argument of
1065 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1066 NAME is the original daemon name, if any. */
1067 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1068 f
= fork (); /* in orig */
1070 f
= 0; /* in exec'd */
1071 #endif /* NS_IMPL_COCOA */
1077 /* Close unused writing end of the pipe. */
1078 close (daemon_pipe
[1]);
1080 /* Just wait for the child to close its end of the pipe. */
1083 retval
= read (daemon_pipe
[0], &buf
, 1);
1085 while (retval
== -1 && errno
== EINTR
);
1089 fprintf (stderr
, "Error reading status from child\n");
1092 else if (retval
== 0)
1094 fprintf (stderr
, "Error: server did not start correctly\n");
1098 close (daemon_pipe
[0]);
1103 fprintf (stderr
, "Cannot fork!\n");
1107 #ifdef NS_IMPL_COCOA
1109 /* In orig process, forked as child, OR in exec'd. */
1110 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1111 { /* In orig, child: now exec w/special daemon name. */
1114 if (dname_arg
&& strlen (dname_arg
) > 70)
1116 fprintf (stderr
, "daemon: child name too long\n");
1120 sprintf (fdStr
, "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1121 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1122 argv
[skip_args
] = fdStr
;
1124 execv (argv
[0], argv
);
1125 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1129 /* In exec'd: parse special dname into pipe and name info. */
1130 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1131 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1133 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1136 dname_arg2
[0] = '\0';
1137 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1139 dname_arg
= strlen (dname_arg2
) ? dname_arg2
: NULL
;
1141 #endif /* NS_IMPL_COCOA */
1144 daemon_name
= xstrdup (dname_arg
);
1145 /* Close unused reading end of the pipe. */
1146 close (daemon_pipe
[0]);
1147 /* Make sure that the used end of the pipe is closed on exec, so
1148 that it is not accessible to programs started from .emacs. */
1149 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1155 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1160 if (! noninteractive
)
1162 #if defined (USG5) && defined (INTERRUPT_INPUT)
1165 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1167 extern void malloc_enable_thread (void);
1169 malloc_enable_thread ();
1176 /* Don't catch SIGHUP if dumping. */
1183 sigblock (sigmask (SIGHUP
));
1184 /* In --batch mode, don't catch SIGHUP if already ignored.
1185 That makes nohup work. */
1186 if (! noninteractive
1187 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1188 signal (SIGHUP
, fatal_error_signal
);
1189 sigunblock (sigmask (SIGHUP
));
1194 ! noninteractive
|| initialized
1200 /* Don't catch these signals in batch mode if dumping.
1201 On some machines, this sets static data that would make
1202 signal fail to work right when the dumped Emacs is run. */
1203 signal (SIGQUIT
, fatal_error_signal
);
1204 signal (SIGILL
, fatal_error_signal
);
1205 signal (SIGTRAP
, fatal_error_signal
);
1207 add_user_signal (SIGUSR1
, "sigusr1");
1210 add_user_signal (SIGUSR2
, "sigusr2");
1213 signal (SIGABRT
, fatal_error_signal
);
1216 signal (SIGHWE
, fatal_error_signal
);
1219 signal (SIGPRE
, fatal_error_signal
);
1222 signal (SIGORE
, fatal_error_signal
);
1225 signal (SIGUME
, fatal_error_signal
);
1228 signal (SIGDLK
, fatal_error_signal
);
1231 signal (SIGCPULIM
, fatal_error_signal
);
1234 /* This is missing on some systems - OS/2, for example. */
1235 signal (SIGIOT
, fatal_error_signal
);
1238 signal (SIGEMT
, fatal_error_signal
);
1240 signal (SIGFPE
, fatal_error_signal
);
1242 signal (SIGBUS
, fatal_error_signal
);
1244 signal (SIGSEGV
, fatal_error_signal
);
1246 signal (SIGSYS
, fatal_error_signal
);
1248 /* May need special treatment on MS-Windows. See
1249 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1250 Please update the doc of kill-emacs, kill-emacs-hook, and
1251 NEWS if you change this.
1253 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1254 signal (SIGTERM
, fatal_error_signal
);
1256 signal (SIGXCPU
, fatal_error_signal
);
1259 signal (SIGXFSZ
, fatal_error_signal
);
1260 #endif /* SIGXFSZ */
1263 /* This just means available memory is getting low. */
1264 signal (SIGDANGER
, memory_warning_signal
);
1268 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1269 signal (SIGXCPU
, fatal_error_signal
);
1270 signal (SIGIOINT
, fatal_error_signal
);
1271 signal (SIGGRANT
, fatal_error_signal
);
1272 signal (SIGRETRACT
, fatal_error_signal
);
1273 signal (SIGSOUND
, fatal_error_signal
);
1274 signal (SIGMSG
, fatal_error_signal
);
1278 noninteractive1
= noninteractive
;
1280 /* Perform basic initializations (not merely interning symbols). */
1287 init_character_once ();
1288 init_charset_once ();
1289 init_coding_once ();
1290 init_syntax_once (); /* Create standard syntax table. */
1291 init_category_once (); /* Create standard category table. */
1292 /* Must be done before init_buffer. */
1293 init_casetab_once ();
1294 init_buffer_once (); /* Create buffer table and some buffers. */
1295 init_minibuf_once (); /* Create list of minibuffers. */
1296 /* Must precede init_window_once. */
1298 /* Call syms_of_xfaces before init_window_once because that
1299 function creates Vterminal_frame. Termcap frames now use
1300 faces, and the face implementation uses some symbols as
1303 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1304 be better to arrange things not to have this dependency. */
1306 /* Call syms_of_keyboard before init_window_once because
1307 keyboard sets up symbols that include some face names that
1308 the X support will want to use. This can happen when
1309 CANNOT_DUMP is defined. */
1310 syms_of_keyboard ();
1312 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1315 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1317 /* Before syms_of_coding because it initializes Qcharsetp. */
1319 /* Before init_window_once, because it sets up the
1320 Vcoding_system_hash_table. */
1321 syms_of_coding (); /* This should be after syms_of_fileio. */
1323 init_window_once (); /* Init the window system. */
1324 #ifdef HAVE_WINDOW_SYSTEM
1325 init_fringe_once (); /* Swap bitmaps if necessary. */
1326 #endif /* HAVE_WINDOW_SYSTEM */
1331 if (do_initial_setlocale
)
1334 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1335 Vsystem_time_locale
= Vprevious_system_time_locale
;
1340 #ifdef CLASH_DETECTION
1344 running_asynch_code
= 0;
1347 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1350 ns_alloc_autorelease_pool();
1351 if (!noninteractive
)
1353 #ifdef NS_IMPL_COCOA
1354 if (skip_args
< argc
)
1356 if (!strncmp(argv
[skip_args
], "-psn", 4))
1359 chdir (getenv ("HOME"));
1361 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1364 chdir (getenv ("HOME"));
1369 #endif /* HAVE_NS */
1371 #ifdef HAVE_X_WINDOWS
1372 /* Stupid kludge to catch command-line display spec. We can't
1373 handle this argument entirely in window system dependent code
1374 because we don't even know which window system dependent code
1375 to run until we've recognized this argument. */
1377 char *displayname
= 0;
1378 int count_before
= skip_args
;
1380 /* Skip any number of -d options, but only use the last one. */
1383 int count_before_this
= skip_args
;
1385 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1387 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1392 count_before
= count_before_this
;
1395 /* If we have the form --display=NAME,
1396 convert it into -d name.
1397 This requires inserting a new element into argv. */
1398 if (displayname
!= 0 && skip_args
- count_before
== 1)
1400 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1403 for (j
= 0; j
< count_before
+ 1; j
++)
1405 new[count_before
+ 1] = "-d";
1406 new[count_before
+ 2] = displayname
;
1407 for (j
= count_before
+ 2; j
<argc
; j
++)
1408 new[j
+ 1] = argv
[j
];
1412 /* Change --display to -d, when its arg is separate. */
1413 else if (displayname
!= 0 && skip_args
> count_before
1414 && argv
[count_before
+ 1][1] == '-')
1415 argv
[count_before
+ 1] = "-d";
1417 /* Don't actually discard this arg. */
1418 skip_args
= count_before
;
1422 /* argmatch must not be used after here,
1423 except when bulding temacs
1424 because the -d argument has not been skipped in skip_args. */
1427 /* Call early 'cause init_environment needs it. */
1429 /* Set defaults for several environment variables. */
1431 init_environment (argc
, argv
, skip_args
);
1438 /* Initialize environment from registry settings. */
1439 init_environment (argv
);
1440 init_ntproc (); /* must precede init_editfns. */
1450 /* Initialize and GC-protect Vinitial_environment and
1451 Vprocess_environment before set_initial_environment fills them
1454 syms_of_callproc ();
1455 /* egetenv is a pretty low-level facility, which may get called in
1456 many circumstances; it seems flimsy to put off initializing it
1457 until calling init_callproc. */
1458 set_initial_environment ();
1459 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1460 if this is not done. Do it after set_global_environment so that we
1461 don't pollute Vglobal_environment. */
1462 /* Setting LANG here will defeat the startup locale processing... */
1467 init_buffer (); /* Init default directory of main buffer. */
1469 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1470 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1474 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1475 Lisp_Object old_log_max
;
1476 old_log_max
= Vmessage_log_max
;
1477 XSETFASTINT (Vmessage_log_max
, 0);
1478 message_dolog ("", 0, 1, 0);
1479 Vmessage_log_max
= old_log_max
;
1482 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1485 /* Intern the names of all standard functions and variables;
1486 define standard keys. */
1490 /* The basic levels of Lisp must come first. Note that
1491 syms_of_data and some others have already been called. */
1497 syms_of_floatfns ();
1500 syms_of_bytecode ();
1502 syms_of_casefiddle ();
1504 syms_of_category ();
1506 syms_of_character ();
1513 syms_of_filelock ();
1516 /* syms_of_keymap (); */
1524 syms_of_terminal ();
1530 syms_of_textprop ();
1531 syms_of_composite ();
1534 #endif /* WINDOWSNT */
1538 #ifdef HAVE_WINDOW_SYSTEM
1541 #endif /* HAVE_WINDOW_SYSTEM */
1542 #ifdef HAVE_X_WINDOWS
1547 syms_of_xsettings ();
1554 #endif /* HAVE_X_WINDOWS */
1565 syms_of_w32select ();
1568 #endif /* HAVE_NTGUI */
1574 syms_of_win16select();
1581 syms_of_nsselect ();
1583 #endif /* HAVE_NS */
1590 syms_of_dbusbind ();
1591 #endif /* HAVE_DBUS */
1595 #endif /* WINDOWSNT */
1597 keys_of_casefiddle ();
1600 keys_of_keyboard ();
1606 /* Initialization that must be done even if the global variable
1607 initialized is non zero. */
1609 globals_of_w32fns ();
1610 globals_of_w32menu ();
1611 globals_of_w32select ();
1612 #endif /* HAVE_NTGUI */
1617 init_editfns (); /* init_process uses Voperating_system_release. */
1618 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1619 init_keyboard (); /* This too must precede init_sys_modes. */
1620 if (!noninteractive
)
1621 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1624 #ifdef HAVE_WINDOW_SYSTEM
1627 #endif /* HAVE_WINDOW_SYSTEM */
1639 /* Handle -l loadup, args passed by Makefile. */
1640 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1641 Vtop_level
= Fcons (intern_c_string ("load"),
1642 Fcons (build_string (file
), Qnil
));
1643 /* Unless next switch is -nl, load "loadup.el" first thing. */
1645 Vtop_level
= Fcons (intern_c_string ("load"),
1646 Fcons (build_string ("loadup.el"), Qnil
));
1653 /* If the execution TZ happens to be the same as the dump TZ,
1654 change it to some other value and then change it back,
1655 to force the underlying implementation to reload the TZ info.
1656 This is needed on implementations that load TZ info from files,
1657 since the TZ file contents may differ between dump and execution. */
1658 char *tz
= getenv ("TZ");
1659 if (tz
&& !strcmp (tz
, dump_tz
))
1669 /* Set up for profiling. This is known to work on FreeBSD,
1670 GNU/Linux and MinGW. It might work on some other systems too.
1671 Give it a try and tell us if it works on your system. To compile
1672 for profiling, use the configure option --enable-profiling. */
1673 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1677 extern void _mcleanup ();
1679 extern unsigned char etext
asm ("etext");
1683 #ifdef HAVE___EXECUTABLE_START
1684 /* This symbol is defined by GNU ld to the start of the text
1686 extern char __executable_start
[];
1688 extern void safe_bcopy ();
1692 #ifdef HAVE___EXECUTABLE_START
1693 monstartup (__executable_start
, &etext
);
1695 /* This uses safe_bcopy because that function comes first in the
1696 Emacs executable. It might be better to use something that
1697 gives the start of the text segment, but start_of_text is not
1698 defined on all systems now. */
1699 /* FIXME: Does not work on architectures with function
1701 monstartup (safe_bcopy
, &etext
);
1711 #ifdef LOCALTIME_CACHE
1712 /* Some versions of localtime have a bug. They cache the value of the time
1713 zone rather than looking it up every time. Since localtime() is
1714 called to bolt the undumping time into the undumped emacs, this
1715 results in localtime ignoring the TZ environment variable.
1716 This flushes the new TZ value into localtime. */
1718 #endif /* defined (LOCALTIME_CACHE) */
1720 /* Enter editor command loop. This never returns. */
1726 /* Sort the args so we can find the most important ones
1727 at the beginning of argv. */
1729 /* First, here's a table of all the standard options. */
1731 struct standard_args
1734 const char *longname
;
1739 const struct standard_args standard_args
[] =
1741 { "-version", "--version", 150, 0 },
1742 { "-chdir", "--chdir", 130, 1 },
1743 { "-t", "--terminal", 120, 1 },
1744 { "-nw", "--no-window-system", 110, 0 },
1745 { "-nw", "--no-windows", 110, 0 },
1746 { "-batch", "--batch", 100, 0 },
1747 { "-script", "--script", 100, 1 },
1748 { "-daemon", "--daemon", 99, 0 },
1749 { "-help", "--help", 90, 0 },
1750 { "-nl", "--no-loadup", 70, 0 },
1751 /* -d must come last before the options handled in startup.el. */
1752 { "-d", "--display", 60, 1 },
1753 { "-display", 0, 60, 1 },
1754 /* Now for the options handled in `command-line' (startup.el). */
1755 { "-Q", "--quick", 55, 0 },
1756 { "-quick", 0, 55, 0 },
1757 { "-q", "--no-init-file", 50, 0 },
1758 { "-no-init-file", 0, 50, 0 },
1759 { "-no-site-file", "--no-site-file", 40, 0 },
1760 { "-u", "--user", 30, 1 },
1761 { "-user", 0, 30, 1 },
1762 { "-debug-init", "--debug-init", 20, 0 },
1763 { "-iconic", "--iconic", 15, 0 },
1764 { "-D", "--basic-display", 12, 0},
1765 { "-basic-display", 0, 12, 0},
1766 { "-nbc", "--no-blinking-cursor", 12, 0 },
1767 /* Now for the options handled in `command-line-1' (startup.el). */
1768 { "-nbi", "--no-bitmap-icon", 10, 0 },
1769 { "-bg", "--background-color", 10, 1 },
1770 { "-background", 0, 10, 1 },
1771 { "-fg", "--foreground-color", 10, 1 },
1772 { "-foreground", 0, 10, 1 },
1773 { "-bd", "--border-color", 10, 1 },
1774 { "-bw", "--border-width", 10, 1 },
1775 { "-ib", "--internal-border", 10, 1 },
1776 { "-ms", "--mouse-color", 10, 1 },
1777 { "-cr", "--cursor-color", 10, 1 },
1778 { "-fn", "--font", 10, 1 },
1779 { "-font", 0, 10, 1 },
1780 { "-fs", "--fullscreen", 10, 0 },
1781 { "-fw", "--fullwidth", 10, 0 },
1782 { "-fh", "--fullheight", 10, 0 },
1783 { "-mm", "--maximized", 10, 0 },
1784 { "-g", "--geometry", 10, 1 },
1785 { "-geometry", 0, 10, 1 },
1786 { "-T", "--title", 10, 1 },
1787 { "-title", 0, 10, 1 },
1788 { "-name", "--name", 10, 1 },
1789 { "-xrm", "--xrm", 10, 1 },
1790 { "-parent-id", "--parent-id", 10, 1 },
1791 { "-r", "--reverse-video", 5, 0 },
1793 { "-reverse", 0, 5, 0 },
1794 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1795 { "-vb", "--vertical-scroll-bars", 5, 0 },
1796 { "-color", "--color", 5, 0},
1797 { "-no-splash", "--no-splash", 3, 0 },
1798 { "-no-desktop", "--no-desktop", 3, 0 },
1800 { "-NSAutoLaunch", 0, 5, 1 },
1801 { "-NXAutoLaunch", 0, 5, 1 },
1802 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1803 { "-_NSMachLaunch", 0, 85, 1 },
1804 { "-MachLaunch", 0, 85, 1 },
1805 { "-macosx", 0, 85, 0 },
1806 { "-NSHost", 0, 85, 1 },
1808 /* These have the same priority as ordinary file name args,
1809 so they are not reordered with respect to those. */
1810 { "-L", "--directory", 0, 1 },
1811 { "-directory", 0, 0, 1 },
1812 { "-l", "--load", 0, 1 },
1813 { "-load", 0, 0, 1 },
1814 /* This has no longname, because using --scriptload confuses sort_args,
1815 because then the --script long option seems to match twice; ie
1816 you can't have a long option which is a prefix of another long
1817 option. In any case, this is entirely an internal option. */
1818 { "-scriptload", NULL
, 0, 1 },
1819 { "-f", "--funcall", 0, 1 },
1820 { "-funcall", 0, 0, 1 },
1821 { "-eval", "--eval", 0, 1 },
1822 { "-execute", "--execute", 0, 1 },
1823 { "-find-file", "--find-file", 0, 1 },
1824 { "-visit", "--visit", 0, 1 },
1825 { "-file", "--file", 0, 1 },
1826 { "-insert", "--insert", 0, 1 },
1828 { "-NXOpen", 0, 0, 1 },
1829 { "-NXOpenTemp", 0, 0, 1 },
1830 { "-NSOpen", 0, 0, 1 },
1831 { "-NSOpenTemp", 0, 0, 1 },
1832 { "-GSFilePath", 0, 0, 1 },
1834 /* This should be processed after ordinary file name args and the like. */
1835 { "-kill", "--kill", -10, 0 },
1838 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1839 so that the highest priority ones come first.
1840 Do not change the order of elements of equal priority.
1841 If an option takes an argument, keep it and its argument together.
1843 If an option that takes no argument appears more
1844 than once, eliminate all but one copy of it. */
1847 sort_args (int argc
, char **argv
)
1849 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1850 /* For each element of argv,
1851 the corresponding element of options is:
1852 0 for an option that takes no arguments,
1853 1 for an option that takes one argument, etc.
1854 -1 for an ordinary non-option argument. */
1855 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1856 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1858 int incoming_used
= 1;
1862 /* Categorize all the options,
1863 and figure out which argv elts are option arguments. */
1864 for (from
= 1; from
< argc
; from
++)
1868 if (argv
[from
][0] == '-')
1873 /* If we have found "--", don't consider
1874 any more arguments as options. */
1875 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1877 /* Leave the "--", and everything following it, at the end. */
1878 for (; from
< argc
; from
++)
1880 priority
[from
] = -100;
1886 /* Look for a match with a known old-fashioned option. */
1887 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1888 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1890 options
[from
] = standard_args
[i
].nargs
;
1891 priority
[from
] = standard_args
[i
].priority
;
1892 if (from
+ standard_args
[i
].nargs
>= argc
)
1893 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1894 from
+= standard_args
[i
].nargs
;
1898 /* Look for a match with a known long option.
1899 MATCH is -1 if no match so far, -2 if two or more matches so far,
1900 >= 0 (the table index of the match) if just one match so far. */
1901 if (argv
[from
][1] == '-')
1904 thislen
= strlen (argv
[from
]);
1905 equals
= strchr (argv
[from
], '=');
1907 thislen
= equals
- argv
[from
];
1910 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1911 if (standard_args
[i
].longname
1912 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1921 /* If we found exactly one match, use that. */
1924 options
[from
] = standard_args
[match
].nargs
;
1925 priority
[from
] = standard_args
[match
].priority
;
1926 /* If --OPTION=VALUE syntax is used,
1927 this option uses just one argv element. */
1930 if (from
+ options
[from
] >= argc
)
1931 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1932 from
+= options
[from
];
1934 /* FIXME When match < 0, shouldn't there be some error,
1935 or at least indication to the user that there was a
1942 /* Copy the arguments, in order of decreasing priority, to NEW. */
1944 while (incoming_used
< argc
)
1947 int best_priority
= -9999;
1949 /* Find the highest priority remaining option.
1950 If several have equal priority, take the first of them. */
1951 for (from
= 1; from
< argc
; from
++)
1953 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1955 best_priority
= priority
[from
];
1958 /* Skip option arguments--they are tied to the options. */
1959 if (options
[from
] > 0)
1960 from
+= options
[from
];
1966 /* Copy the highest priority remaining option, with its args, to NEW.
1967 Unless it is a duplicate of the previous one. */
1968 if (! (options
[best
] == 0
1969 && ! strcmp (new[to
- 1], argv
[best
])))
1971 new[to
++] = argv
[best
];
1972 for (i
= 0; i
< options
[best
]; i
++)
1973 new[to
++] = argv
[best
+ i
+ 1];
1976 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1978 /* Clear out this option in ARGV. */
1980 for (i
= 0; i
< options
[best
]; i
++)
1981 argv
[best
+ i
+ 1] = 0;
1984 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1988 memcpy (argv
, new, sizeof (char *) * argc
);
1995 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1996 doc
: /* Exit the Emacs job and kill it.
1997 If ARG is an integer, return ARG as the exit program code.
1998 If ARG is a string, stuff it as keyboard input.
2000 This function is called upon receipt of the signals SIGTERM
2001 or SIGHUP, and upon SIGINT in batch mode.
2003 The value of `kill-emacs-hook', if not void,
2004 is a list of functions (of no args),
2005 all of which are called before Emacs is actually killed. */)
2008 struct gcpro gcpro1
;
2015 if (!NILP (Vrun_hooks
))
2016 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
2020 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2022 /* If we have an auto-save list file,
2023 kill it because we are exiting Emacs deliberately (not crashing).
2024 Do it after shut_down_emacs, which does an auto-save. */
2025 if (STRINGP (Vauto_save_list_file_name
))
2026 unlink (SDATA (Vauto_save_list_file_name
));
2028 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
2032 /* Perform an orderly shutdown of Emacs. Autosave any modified
2033 buffers, kill any child processes, clean up the terminal modes (if
2034 we're in the foreground), and other stuff like that. Don't perform
2035 any redisplay; this may be called when Emacs is shutting down in
2036 the background, or after its X connection has died.
2038 If SIG is a signal number, print a message for it.
2040 This is called by fatal signal handlers, X protocol error handlers,
2044 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2046 /* Prevent running of hooks from now on. */
2049 /* Don't update display from now on. */
2050 Vinhibit_redisplay
= Qt
;
2052 /* If we are controlling the terminal, reset terminal modes. */
2055 int pgrp
= EMACS_GETPGRP (0);
2058 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2061 reset_all_sys_modes ();
2062 if (sig
&& sig
!= SIGTERM
)
2063 fprintf (stderr
, "Fatal error (%d)", sig
);
2068 reset_all_sys_modes ();
2071 stuff_buffered_input (stuff
);
2073 inhibit_sentinels
= 1;
2074 kill_buffer_processes (Qnil
);
2075 Fdo_auto_save (Qt
, Qnil
);
2077 #ifdef CLASH_DETECTION
2078 unlock_all_files ();
2081 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2082 #ifdef HAVE_X_WINDOWS
2083 /* It's not safe to call intern here. Maybe we are crashing. */
2084 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2085 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2086 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2088 Fx_close_current_connection ();
2089 #endif /* HAVE_X_WINDOWS */
2093 /* There is a tendency for a SIGIO signal to arrive within exit,
2094 and cause a SIGHUP because the input descriptor is already closed. */
2096 signal (SIGIO
, SIG_IGN
);
2103 /* Do this only if terminating normally, we want glyph matrices
2104 etc. in a core dump. */
2105 if (sig
== 0 || sig
== SIGTERM
)
2107 check_glyph_memory ();
2108 check_message_stack ();
2116 ns_term_shutdown (sig
);
2124 /* FIXME: maybe this should go into header file, config.h seems the
2125 only one appropriate. */
2126 extern int unexec (const char *, const char *);
2128 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2129 doc
: /* Dump current state of Emacs into executable file FILENAME.
2130 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2131 This is used in the file `loadup.el' when building Emacs.
2133 You must run Emacs in batch mode in order to dump it. */)
2134 (Lisp_Object filename
, Lisp_Object symfile
)
2136 extern char my_edata
[];
2139 int count
= SPECPDL_INDEX ();
2143 if (! noninteractive
)
2144 error ("Dumping Emacs works only in batch mode");
2147 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2149 fprintf (stderr
, "**************************************************\n");
2150 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2151 fprintf (stderr
, "heap (%lu bytes). This usually means that exec-shield\n",
2153 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2154 fprintf (stderr
, "fail because of this. See the section about\n");
2155 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2156 fprintf (stderr
, "**************************************************\n");
2158 #endif /* GNU_LINUX */
2160 /* Bind `command-line-processed' to nil before dumping,
2161 so that the dumped Emacs will process its command line
2162 and set up to work with X windows if appropriate. */
2163 symbol
= intern ("command-line-processed");
2164 specbind (symbol
, Qnil
);
2166 CHECK_STRING (filename
);
2167 filename
= Fexpand_file_name (filename
, Qnil
);
2168 if (!NILP (symfile
))
2170 CHECK_STRING (symfile
);
2171 if (SCHARS (symfile
))
2172 symfile
= Fexpand_file_name (symfile
, Qnil
);
2176 Vpurify_flag
= Qnil
;
2179 set_time_zone_rule (dump_tz
);
2180 #ifndef LOCALTIME_CACHE
2181 /* Force a tz reload, since set_time_zone_rule doesn't. */
2187 /* Tell malloc where start of impure now is. */
2188 /* Also arrange for warnings when nearly out of space. */
2189 #ifndef SYSTEM_MALLOC
2191 /* On Windows, this was done before dumping, and that once suffices.
2192 Meanwhile, my_edata is not valid on Windows. */
2193 memory_warnings (my_edata
, malloc_warning
);
2194 #endif /* not WINDOWSNT */
2195 #if defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2196 /* Pthread may call malloc before main, and then we will get an endless
2197 loop, because pthread_self (see alloc.c) calls malloc the first time
2198 it is called on some systems. */
2199 reset_malloc_hooks ();
2201 #endif /* not SYSTEM_MALLOC */
2202 #ifdef DOUG_LEA_MALLOC
2203 malloc_state_ptr
= malloc_get_state ();
2206 #ifdef USE_MMAP_FOR_BUFFERS
2209 unexec (SDATA (filename
), !NILP (symfile
) ? SDATA (symfile
) : 0);
2210 #ifdef USE_MMAP_FOR_BUFFERS
2213 #ifdef DOUG_LEA_MALLOC
2214 free (malloc_state_ptr
);
2219 return unbind_to (count
, Qnil
);
2222 #endif /* not CANNOT_DUMP */
2225 /* Recover from setlocale (LC_ALL, ""). */
2229 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2230 so that numbers are read and printed properly for Emacs Lisp. */
2231 setlocale (LC_NUMERIC
, "C");
2234 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2237 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2239 if (! EQ (*plocale
, desired_locale
))
2241 *plocale
= desired_locale
;
2242 setlocale (category
, (STRINGP (desired_locale
)
2243 ? (char *) SDATA (desired_locale
)
2248 /* Set system time locale to match Vsystem_time_locale, if possible. */
2250 synchronize_system_time_locale (void)
2252 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2253 Vsystem_time_locale
);
2256 /* Set system messages locale to match Vsystem_messages_locale, if
2259 synchronize_system_messages_locale (void)
2262 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2263 Vsystem_messages_locale
);
2266 #endif /* HAVE_SETLOCALE */
2273 decode_env_path (const char *evarname
, const char *defalt
)
2275 const char *path
, *p
;
2276 Lisp_Object lpath
, element
, tem
;
2278 /* It's okay to use getenv here, because this function is only used
2279 to initialize variables when Emacs starts up, and isn't called
2282 path
= getenv (evarname
);
2288 /* Ensure values from the environment use the proper directory separator. */
2291 char *path_copy
= alloca (strlen (path
) + 1);
2292 strcpy (path_copy
, path
);
2293 dostounix_filename (path_copy
);
2300 p
= strchr (path
, SEPCHAR
);
2302 p
= path
+ strlen (path
);
2303 element
= (p
- path
? make_string (path
, p
- path
)
2304 : build_string ("."));
2306 /* Add /: to the front of the name
2307 if it would otherwise be treated as magic. */
2308 tem
= Ffind_file_name_handler (element
, Qt
);
2310 /* However, if the handler says "I'm safe",
2311 don't bother adding /:. */
2315 prop
= Fget (tem
, intern ("safe-magic"));
2321 element
= concat2 (build_string ("/:"), element
);
2323 lpath
= Fcons (element
, lpath
);
2329 return Fnreverse (lpath
);
2332 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2333 doc
: /* Return non-nil if the current emacs process is a daemon.
2334 If the daemon was given a name argument, return that name. */)
2339 return build_string (daemon_name
);
2346 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2347 doc
: /* Mark the Emacs daemon as being initialized.
2348 This finishes the daemonization process by doing the other half of detaching
2349 from the parent process and its tty file descriptors. */)
2355 error ("This function can only be called if emacs is run as a daemon");
2357 if (daemon_pipe
[1] < 0)
2358 error ("The daemon has already been initialized");
2360 if (NILP (Vafter_init_time
))
2361 error ("This function can only be called after loading the init files");
2363 /* Get rid of stdin, stdout and stderr. */
2364 nfd
= open ("/dev/null", O_RDWR
);
2370 /* Closing the pipe will notify the parent that it can exit.
2371 FIXME: In case some other process inherited the pipe, closing it here
2372 won't notify the parent because it's still open elsewhere, so we
2373 additionally send a byte, just to make sure the parent really exits.
2374 Instead, we should probably close the pipe in start-process and
2375 call-process to make sure the pipe is never inherited by
2377 write (daemon_pipe
[1], "\n", 1);
2378 close (daemon_pipe
[1]);
2379 /* Set it to an invalid value so we know we've already run this function. */
2380 daemon_pipe
[1] = -1;
2385 syms_of_emacs (void)
2387 Qfile_name_handler_alist
= intern_c_string ("file-name-handler-alist");
2388 staticpro (&Qfile_name_handler_alist
);
2391 defsubr (&Sdump_emacs
);
2394 defsubr (&Skill_emacs
);
2396 defsubr (&Sinvocation_name
);
2397 defsubr (&Sinvocation_directory
);
2398 defsubr (&Sdaemonp
);
2399 defsubr (&Sdaemon_initialized
);
2401 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2402 doc
: /* Args passed by shell to Emacs, as a list of strings.
2403 Many arguments are deleted from the list as they are processed. */);
2405 DEFVAR_LISP ("system-type", &Vsystem_type
,
2406 doc
: /* The value is a symbol indicating the type of operating system you are using.
2408 `gnu' compiled for a GNU Hurd system.
2409 `gnu/linux' compiled for a GNU/Linux system.
2410 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2411 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2412 `ms-dos' compiled as an MS-DOS application.
2413 `windows-nt' compiled as a native W32 application.
2414 `cygwin' compiled using the Cygwin library.
2415 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2416 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2417 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2418 /* Above values are from SYSTEM_TYPE in src/s/*.h. */
2420 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2421 doc
: /* Value is string indicating configuration Emacs was built for.
2422 On MS-Windows, the value reflects the OS flavor and version on which
2423 Emacs is running. */);
2424 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2426 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2427 doc
: /* String containing the configuration options Emacs was built with. */);
2428 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2430 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2431 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2433 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2434 doc
: /* Hook to be run when `kill-emacs' is called.
2435 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2436 in other similar situations), functions placed on this hook should not
2437 expect to be able to interact with the user. To ask for confirmation,
2438 see `kill-emacs-query-functions' instead.
2440 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2441 `noninteractive' was non-nil. */);
2442 Vkill_emacs_hook
= Qnil
;
2444 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2445 doc
: /* Priority for Emacs to run at.
2446 This value is effective only if set before Emacs is dumped,
2447 and only if the Emacs executable is installed with setuid to permit
2448 it to change priority. (Emacs sets its uid back to the real uid.)
2449 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2450 before you compile Emacs, to enable the code for this feature. */);
2453 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2454 doc
: /* String containing the character that separates directories in
2455 search paths, such as PATH and other similar environment variables. */);
2458 Vpath_separator
= make_string (&c
, 1);
2461 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2462 doc
: /* The program name that was used to run Emacs.
2463 Any directory names are omitted. */);
2465 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2466 doc
: /* The directory in which the Emacs executable was found, to run it.
2467 The value is nil if that directory's name is not known. */);
2469 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2470 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2471 This is non-nil when we can't find those directories in their standard
2472 installed locations, but we can find them near where the Emacs executable
2474 Vinstallation_directory
= Qnil
;
2476 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2477 doc
: /* System locale for messages. */);
2478 Vsystem_messages_locale
= Qnil
;
2480 DEFVAR_LISP ("previous-system-messages-locale",
2481 &Vprevious_system_messages_locale
,
2482 doc
: /* Most recently used system locale for messages. */);
2483 Vprevious_system_messages_locale
= Qnil
;
2485 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2486 doc
: /* System locale for time. */);
2487 Vsystem_time_locale
= Qnil
;
2489 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2490 doc
: /* Most recently used system locale for time. */);
2491 Vprevious_system_time_locale
= Qnil
;
2493 DEFVAR_LISP ("before-init-time", &Vbefore_init_time
,
2494 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2495 Vbefore_init_time
= Qnil
;
2497 DEFVAR_LISP ("after-init-time", &Vafter_init_time
,
2498 doc
: /* Value of `current-time' after loading the init files.
2499 This is nil during initialization. */);
2500 Vafter_init_time
= Qnil
;
2502 DEFVAR_BOOL ("inhibit-x-resources", &inhibit_x_resources
,
2503 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2504 inhibit_x_resources
= 0;
2506 DEFVAR_LISP ("emacs-copyright", &Vemacs_copyright
,
2507 doc
: /* Short copyright string for this version of Emacs. */);
2508 Vemacs_copyright
= build_string (emacs_copyright
);
2510 DEFVAR_LISP ("emacs-version", &Vemacs_version
,
2511 doc
: /* Version numbers of this version of Emacs. */);
2512 Vemacs_version
= build_string (emacs_version
);
2514 DEFVAR_LISP ("dynamic-library-alist", &Vdynamic_library_alist
,
2515 doc
: /* Alist of dynamic libraries vs external files implementing them.
2516 Each element is a list (LIBRARY FILE...), where the car is a symbol
2517 representing a supported external library, and the rest are strings giving
2518 alternate filenames for that library.
2520 Emacs tries to load the library from the files in the order they appear on
2521 the list; if none is loaded, the running session of Emacs won't have access
2524 Note that image types `pbm' and `xbm' do not need entries in this variable
2525 because they do not depend on external libraries and are always available.
2527 Also note that this is not a generic facility for accessing external
2528 libraries; only those already known by Emacs will be loaded. */);
2529 Vdynamic_library_alist
= Qnil
;
2530 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2532 /* Make sure IS_DAEMON starts up as false. */