1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2011
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/types.h>
36 #include <windows.h> /* just for w32.h */
38 #include "w32heap.h" /* for prototype of sbrk */
41 #ifdef NS_IMPL_GNUSTEP
42 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
43 #include <GNUstepBase/GSConfig.h>
47 #include "intervals.h"
52 #include "blockinput.h"
53 #include "syssignal.h"
56 #include "termhooks.h"
78 #include <sys/resource.h>
81 #ifdef HAVE_PERSONALITY_LINUX32
82 #include <sys/personality.h>
92 #define setpgrp setpgid
96 static const char emacs_version
[] = VERSION
;
97 static const char emacs_copyright
[] = "Copyright (C) 2011 Free Software Foundation, Inc.";
99 /* Make these values available in GDB, which doesn't see macros. */
102 int gdb_use_lsb EXTERNALLY_VISIBLE
= 1;
104 int gdb_use_lsb EXTERNALLY_VISIBLE
= 0;
106 #ifndef USE_LISP_UNION_TYPE
107 int gdb_use_union EXTERNALLY_VISIBLE
= 0;
109 int gdb_use_union EXTERNALLY_VISIBLE
= 1;
111 EMACS_INT gdb_valbits EXTERNALLY_VISIBLE
= VALBITS
;
112 EMACS_INT gdb_gctypebits EXTERNALLY_VISIBLE
= GCTYPEBITS
;
113 #if defined (DATA_SEG_BITS) && ! defined (USE_LSB_TAG)
114 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= DATA_SEG_BITS
;
116 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= 0;
118 EMACS_INT PVEC_FLAG EXTERNALLY_VISIBLE
= PSEUDOVECTOR_FLAG
;
119 EMACS_INT gdb_array_mark_flag EXTERNALLY_VISIBLE
= ARRAY_MARK_FLAG
;
120 /* GDB might say "No enum type named pvec_type" if we don't have at
121 least one symbol with that type, and then xbacktrace could fail. */
122 enum pvec_type gdb_pvec_type EXTERNALLY_VISIBLE
= PVEC_TYPE_MASK
;
124 /* Empty lisp strings. To avoid having to build any others. */
125 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
127 /* Set nonzero after Emacs has started up the first time.
128 Prevents reinitialization of the Lisp world and keymaps
129 on subsequent starts. */
133 extern void unexec_init_emacs_zone (void);
136 #ifdef DOUG_LEA_MALLOC
137 /* Preserves a pointer to the memory allocated that copies that
138 static data inside glibc's malloc. */
139 static void *malloc_state_ptr
;
140 /* From glibc, a routine that returns a copy of the malloc internal state. */
141 extern void *malloc_get_state (void);
142 /* From glibc, a routine that overwrites the malloc internal state. */
143 extern int malloc_set_state (void*);
144 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
145 dumping. Used to work around a bug in glibc's malloc. */
146 static int malloc_using_checking
;
149 Lisp_Object Qfile_name_handler_alist
;
151 Lisp_Object Qrisky_local_variable
;
153 /* If non-zero, Emacs should not attempt to use a window-specific code,
154 but instead should use the virtual terminal under which it was started. */
155 int inhibit_window_system
;
157 /* If non-zero, a filter or a sentinel is running. Tested to save the match
158 data on the first attempt to change it inside asynchronous code. */
159 int running_asynch_code
;
161 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
162 /* If non-zero, -d was specified, meaning we're using some window system. */
166 /* An address near the bottom of the stack.
167 Tells GC how to save a copy of the stack. */
170 /* The address where the heap starts (from the first sbrk (0) call). */
171 static void *my_heap_start
;
174 /* The gap between BSS end and heap start as far as we can tell. */
175 static uprintmax_t heap_bss_diff
;
178 /* Nonzero means running Emacs without interactive terminal. */
181 /* Nonzero means remove site-lisp directories from load-path. */
184 /* Name for the server started by the daemon.*/
185 static char *daemon_name
;
187 /* Pipe used to send exit notification to the daemon parent at
191 /* Save argv and argc. */
195 static void sort_args (int argc
, char **argv
);
196 static void syms_of_emacs (void);
198 /* MSVC needs each string be shorter than 2048 bytes, so the usage
199 strings below are split to not overflow this limit. */
201 Usage: %s [OPTION-OR-FILENAME]...\n\
203 Run Emacs, the extensible, customizable, self-documenting real-time\n\
204 display editor. The recommended way to start Emacs for normal editing\n\
205 is with no options at all.\n\
207 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
208 read the main documentation for these command-line arguments.\n\
210 Initialization options:\n\
212 --batch do not do interactive display; implies -q\n\
213 --chdir DIR change to directory DIR\n\
214 --daemon start a server in the background\n\
215 --debug-init enable Emacs Lisp debugger for init file\n\
216 --display, -d DISPLAY use X server DISPLAY\n\
217 --no-desktop do not load a saved desktop\n\
218 --no-init-file, -q load neither ~/.emacs nor default.el\n\
219 --no-shared-memory, -nl do not use shared memory\n\
220 --no-site-file do not load site-start.el\n\
221 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
222 --no-splash do not display a splash screen on startup\n\
223 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
224 --quick, -Q equivalent to:\n\
225 -q --no-site-file --no-site-lisp --no-splash\n\
226 --script FILE run FILE as an Emacs Lisp script\n\
227 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
228 --user, -u USER load ~USER/.emacs instead of your own\n\
234 FILE visit FILE using find-file\n\
235 +LINE go to line LINE in next FILE\n\
236 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
237 --directory, -L DIR add DIR to variable load-path\n\
238 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
239 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
240 --file FILE visit FILE using find-file\n\
241 --find-file FILE visit FILE using find-file\n\
242 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
243 --insert FILE insert contents of FILE into current buffer\n\
244 --kill exit without asking for confirmation\n\
245 --load, -l FILE load Emacs Lisp FILE using the load function\n\
246 --visit FILE visit FILE using find-file\n\
252 --background-color, -bg COLOR window background color\n\
253 --basic-display, -D disable many display features;\n\
254 used for debugging Emacs\n\
255 --border-color, -bd COLOR main border color\n\
256 --border-width, -bw WIDTH width of main border\n\
257 --color, --color=MODE override color mode for character terminals;\n\
258 MODE defaults to `auto', and\n\
259 can also be `never', `always',\n\
260 or a mode name like `ansi8'\n\
261 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
262 --font, -fn FONT default font; must be fixed-width\n\
263 --foreground-color, -fg COLOR window foreground color\n\
264 --fullheight, -fh make the first frame high as the screen\n\
265 --fullscreen, -fs make the first frame fullscreen\n\
266 --fullwidth, -fw make the first frame wide as the screen\n\
267 --maximized, -mm make the first frame maximized\n\
268 --geometry, -g GEOMETRY window geometry\n\
269 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
270 --iconic start Emacs in iconified state\n\
271 --internal-border, -ib WIDTH width between text and main border\n\
272 --line-spacing, -lsp PIXELS additional space to put between lines\n\
273 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
274 --name NAME title for initial Emacs frame\n\
275 --no-blinking-cursor, -nbc disable blinking cursor\n\
276 --reverse-video, -r, -rv switch foreground and background\n\
277 --title, -T TITLE title for initial Emacs frame\n\
278 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
279 --xrm XRESOURCES set additional X resources\n\
280 --parent-id XID set parent window\n\
281 --help display this help and exit\n\
282 --version output version information and exit\n\
286 You can generally also specify long option names with a single -; for\n\
287 example, -batch as well as --batch. You can use any unambiguous\n\
288 abbreviation for a --option.\n\
290 Various environment variables and window system resources also affect\n\
291 Emacs' operation. See the main documentation.\n\
293 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
294 section of the Emacs manual or the file BUGS.\n"
297 /* Signal code for the fatal signal that was received. */
298 static int fatal_error_code
;
300 /* Nonzero if handling a fatal error already. */
301 int fatal_error_in_progress
;
303 /* If non-null, call this function from fatal_error_signal before
304 committing suicide. */
306 static void (*fatal_error_signal_hook
) (void);
308 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
309 /* When compiled with GTK and running under Gnome,
310 multiple threads may be created. Keep track of our main
311 thread to make sure signals are delivered to it (see syssignal.h). */
313 pthread_t main_thread
;
317 /* Handle bus errors, invalid instruction, etc. */
318 #ifndef FLOAT_CATCH_SIGILL
322 fatal_error_signal (int sig
)
324 SIGNAL_THREAD_CHECK (sig
);
325 fatal_error_code
= sig
;
326 signal (sig
, SIG_DFL
);
328 TOTALLY_UNBLOCK_INPUT
;
330 /* If fatal error occurs in code below, avoid infinite recursion. */
331 if (! fatal_error_in_progress
)
333 fatal_error_in_progress
= 1;
335 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
336 Fkill_emacs (make_number (sig
));
338 shut_down_emacs (sig
, 0, Qnil
);
341 /* Signal the same code; this time it will really be fatal.
342 Remember that since we're in a signal handler, the signal we're
343 going to send is probably blocked, so we have to unblock it if we
344 want to really receive it. */
346 sigunblock (sigmask (fatal_error_code
));
349 if (fatal_error_signal_hook
)
350 fatal_error_signal_hook ();
352 kill (getpid (), fatal_error_code
);
357 /* Handler for SIGDANGER. */
359 memory_warning_signal (int sig
)
361 signal (sig
, memory_warning_signal
);
362 SIGNAL_THREAD_CHECK (sig
);
364 malloc_warning ("Operating system warns that virtual memory is running low.\n");
366 /* It might be unsafe to call do_auto_save now. */
367 force_auto_save_soon ();
371 /* We define abort, rather than using it from the library,
372 so that GDB can return from a breakpoint here.
373 MSDOS has its own definition in msdos.c. */
375 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
380 kill (getpid (), SIGABRT
);
381 /* This shouldn't be executed, but it prevents a warning. */
387 /* Code for dealing with Lisp access to the Unix command line. */
390 init_cmdargs (int argc
, char **argv
, int skip_args
)
393 Lisp_Object name
, dir
, handler
;
394 int count
= SPECPDL_INDEX ();
395 Lisp_Object raw_name
;
400 raw_name
= build_string (argv
[0]);
402 /* Add /: to the front of the name
403 if it would otherwise be treated as magic. */
404 handler
= Ffind_file_name_handler (raw_name
, Qt
);
405 if (! NILP (handler
))
406 raw_name
= concat2 (build_string ("/:"), raw_name
);
408 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
409 Vinvocation_directory
= Ffile_name_directory (raw_name
);
411 /* If we got no directory in argv[0], search PATH to find where
412 Emacs actually came from. */
413 if (NILP (Vinvocation_directory
))
416 int yes
= openp (Vexec_path
, Vinvocation_name
,
417 Vexec_suffixes
, &found
, make_number (X_OK
));
420 /* Add /: to the front of the name
421 if it would otherwise be treated as magic. */
422 handler
= Ffind_file_name_handler (found
, Qt
);
423 if (! NILP (handler
))
424 found
= concat2 (build_string ("/:"), found
);
425 Vinvocation_directory
= Ffile_name_directory (found
);
429 if (!NILP (Vinvocation_directory
)
430 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
431 /* Emacs was started with relative path, like ./emacs.
433 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
435 Vinstallation_directory
= Qnil
;
437 if (!NILP (Vinvocation_directory
))
439 dir
= Vinvocation_directory
;
440 name
= Fexpand_file_name (Vinvocation_name
, dir
);
443 Lisp_Object tem
, lib_src_exists
;
444 Lisp_Object etc_exists
, info_exists
;
446 /* See if dir contains subdirs for use by Emacs.
447 Check for the ones that would exist in a build directory,
448 not including lisp and info. */
449 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
450 lib_src_exists
= Ffile_exists_p (tem
);
453 /* MSDOS installations frequently remove lib-src, but we still
454 must set installation-directory, or else info won't find
455 its files (it uses the value of installation-directory). */
456 tem
= Fexpand_file_name (build_string ("info"), dir
);
457 info_exists
= Ffile_exists_p (tem
);
462 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
464 tem
= Fexpand_file_name (build_string ("etc"), dir
);
465 etc_exists
= Ffile_exists_p (tem
);
466 if (!NILP (etc_exists
))
468 Vinstallation_directory
469 = Ffile_name_as_directory (dir
);
474 /* See if dir's parent contains those subdirs. */
475 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
476 lib_src_exists
= Ffile_exists_p (tem
);
480 /* See the MSDOS commentary above. */
481 tem
= Fexpand_file_name (build_string ("../info"), dir
);
482 info_exists
= Ffile_exists_p (tem
);
487 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
489 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
490 etc_exists
= Ffile_exists_p (tem
);
491 if (!NILP (etc_exists
))
493 tem
= Fexpand_file_name (build_string (".."), dir
);
494 Vinstallation_directory
495 = Ffile_name_as_directory (tem
);
500 /* If the Emacs executable is actually a link,
501 next try the dir that the link points into. */
502 tem
= Ffile_symlink_p (name
);
505 name
= Fexpand_file_name (tem
, dir
);
506 dir
= Ffile_name_directory (name
);
513 Vcommand_line_args
= Qnil
;
515 for (i
= argc
- 1; i
>= 0; i
--)
517 if (i
== 0 || i
> skip_args
)
518 /* For the moment, we keep arguments as is in unibyte strings.
519 They are decoded in the function command-line after we know
520 locale-coding-system. */
522 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
526 unbind_to (count
, Qnil
);
529 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
530 doc
: /* Return the program name that was used to run Emacs.
531 Any directory names are omitted. */)
534 return Fcopy_sequence (Vinvocation_name
);
537 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
539 doc
: /* Return the directory name in which the Emacs executable was located. */)
542 return Fcopy_sequence (Vinvocation_directory
);
547 /* A valid but unlikely value for the TZ environment value.
548 It is OK (though a bit slower) if the user actually chooses this value. */
549 static char dump_tz
[] = "UtC0";
552 #ifndef ORDINARY_LINK
553 /* We don't include crtbegin.o and crtend.o in the link,
554 so these functions and variables might be missed.
555 Provide dummy definitions to avoid error.
556 (We don't have any real constructors or destructors.) */
559 /* Define a dummy function F. Declare F too, to pacify gcc
560 -Wmissing-prototypes. */
561 #define DEFINE_DUMMY_FUNCTION(f) \
562 void f (void) EXTERNALLY_VISIBLE; void f (void) {}
564 #ifndef GCC_CTORS_IN_LIBC
565 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
566 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
567 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
568 /* GNU/Linux has a bug in its library; avoid an error. */
570 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
572 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
573 #endif /* GCC_CTORS_IN_LIBC */
574 DEFINE_DUMMY_FUNCTION (__main
)
575 #endif /* __GNUC__ */
576 #endif /* ORDINARY_LINK */
578 /* Test whether the next argument in ARGV matches SSTR or a prefix of
579 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
580 (the argument is supposed to have a value) store in *VALPTR either
581 the next argument or the portion of this one after the equal sign.
582 ARGV is read starting at position *SKIPPTR; this index is advanced
583 by the number of arguments used.
585 Too bad we can't just use getopt for all of this, but we don't have
586 enough information to do it right. */
589 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
590 int minlen
, char **valptr
, int *skipptr
)
596 /* Don't access argv[argc]; give up in advance. */
597 if (argc
<= *skipptr
+ 1)
600 arg
= argv
[*skipptr
+1];
603 if (strcmp (arg
, sstr
) == 0)
607 *valptr
= argv
[*skipptr
+2];
614 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
615 ? p
- arg
: strlen (arg
));
616 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
618 else if (valptr
== NULL
)
629 else if (argv
[*skipptr
+2] != NULL
)
631 *valptr
= argv
[*skipptr
+2];
641 #ifdef DOUG_LEA_MALLOC
643 /* malloc can be invoked even before main (e.g. by the dynamic
644 linker), so the dumped malloc state must be restored as early as
645 possible using this special hook. */
648 malloc_initialize_hook (void)
651 extern char **environ
;
656 if (!malloc_using_checking
)
657 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
658 ignored if the heap to be restored was constructed without
659 malloc checking. Can't use unsetenv, since that calls malloc. */
663 for (p
= environ
; p
&& *p
; p
++)
664 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
673 malloc_set_state (malloc_state_ptr
);
674 #ifndef XMALLOC_OVERRUN_CHECK
675 free (malloc_state_ptr
);
680 if (my_heap_start
== 0)
681 my_heap_start
= sbrk (0);
682 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
686 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
688 #endif /* DOUG_LEA_MALLOC */
693 main (int argc
, char **argv
)
698 char stack_bottom_variable
;
699 int do_initial_setlocale
;
701 #ifdef HAVE_SETRLIMIT
716 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
717 /* This is used by the Cygwin build. */
718 setenv ("G_SLICE", "always-malloc", 1);
724 extern char my_endbss
[];
725 extern char *my_endbss_static
;
727 if (my_heap_start
== 0)
728 my_heap_start
= sbrk (0);
730 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
734 #ifdef RUN_TIME_REMAP
736 run_time_remap (argv
[0]);
739 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
742 unexec_init_emacs_zone ();
745 sort_args (argc
, argv
);
747 while (argv
[argc
]) argc
++;
749 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
751 const char *version
, *copyright
;
754 Lisp_Object tem
, tem2
;
755 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
756 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
759 fprintf (stderr
, "Invalid value of `emacs-version'\n");
764 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
769 version
= SSDATA (tem
);
770 copyright
= SSDATA (tem2
);
775 version
= emacs_version
;
776 copyright
= emacs_copyright
;
778 printf ("GNU Emacs %s\n", version
);
779 printf ("%s\n", copyright
);
780 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
781 printf ("You may redistribute copies of Emacs\n");
782 printf ("under the terms of the GNU General Public License.\n");
783 printf ("For more information about these matters, ");
784 printf ("see the file named COPYING.\n");
788 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
789 if (chdir (ch_to_dir
) == -1)
791 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
792 argv
[0], ch_to_dir
, strerror (errno
));
797 #ifdef HAVE_PERSONALITY_LINUX32
799 && (strcmp (argv
[argc
-1], "dump") == 0
800 || strcmp (argv
[argc
-1], "bootstrap") == 0)
801 && ! getenv ("EMACS_HEAP_EXEC"))
803 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
804 /* Set this so we only do this once. */
807 /* A flag to turn off address randomization which is introduced
808 in linux kernel shipped with fedora core 4 */
809 #define ADD_NO_RANDOMIZE 0x0040000
810 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
811 #undef ADD_NO_RANDOMIZE
813 execvp (argv
[0], argv
);
815 /* If the exec fails, try to dump anyway. */
818 #endif /* HAVE_PERSONALITY_LINUX32 */
820 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
821 /* Extend the stack space available.
822 Don't do that if dumping, since some systems (e.g. DJGPP)
823 might define a smaller stack limit at that time. */
826 && (!noninteractive
|| initialized
)
828 && !getrlimit (RLIMIT_STACK
, &rlim
))
831 extern size_t re_max_failures
;
832 /* Approximate the amount regex.c needs per unit of re_max_failures. */
833 int ratio
= 20 * sizeof (char *);
834 /* Then add 33% to cover the size of the smaller stacks that regex.c
835 successively allocates and discards, on its way to the maximum. */
837 /* Add in some extra to cover
838 what we're likely to use for other reasons. */
839 newlim
= re_max_failures
* ratio
+ 200000;
841 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
842 stack allocation routine for new process that the allocation
843 fails if stack limit is not on page boundary. So, round up the
844 new limit to page boundary. */
845 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
847 if (newlim
> rlim
.rlim_max
)
849 newlim
= rlim
.rlim_max
;
850 /* Don't let regex.c overflow the stack we have. */
851 re_max_failures
= (newlim
- 200000) / ratio
;
853 if (rlim
.rlim_cur
< newlim
)
854 rlim
.rlim_cur
= newlim
;
856 setrlimit (RLIMIT_STACK
, &rlim
);
858 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
860 /* Record (approximately) where the stack begins. */
861 stack_bottom
= &stack_bottom_variable
;
865 #ifndef SYSTEM_MALLOC
866 /* Arrange to get warning messages as memory fills up. */
867 memory_warnings (0, malloc_warning
);
869 /* Call malloc at least once, to run the initial __malloc_hook.
870 Also call realloc and free for consistency. */
871 free (realloc (malloc (4), 4));
874 /* Arrange to disable interrupt input inside malloc etc. */
875 uninterrupt_malloc ();
876 # endif /* not SYNC_INPUT */
877 #endif /* not SYSTEM_MALLOC */
879 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
880 main_thread
= pthread_self ();
881 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
883 #if defined (MSDOS) || defined (WINDOWSNT)
884 /* We do all file input/output as binary files. When we need to translate
885 newlines, we do that manually. */
887 #endif /* MSDOS || WINDOWSNT */
890 if (!isatty (fileno (stdin
)))
891 setmode (fileno (stdin
), O_BINARY
);
892 if (!isatty (fileno (stdout
)))
895 setmode (fileno (stdout
), O_BINARY
);
899 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
900 The build procedure uses this while dumping, to ensure that the
901 dumped Emacs does not have its system locale tables initialized,
902 as that might cause screwups when the dumped Emacs starts up. */
904 char *lc_all
= getenv ("LC_ALL");
905 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
908 /* Set locale now, so that initial error messages are localized properly.
909 fixup_locale must wait until later, since it builds strings. */
910 if (do_initial_setlocale
)
911 setlocale (LC_ALL
, "");
913 inhibit_window_system
= 0;
915 /* Handle the -t switch, which specifies filename to use as terminal. */
919 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
924 result
= emacs_open (term
, O_RDWR
, 0);
925 if (result
< 0 || dup (0) < 0)
927 char *errstring
= strerror (errno
);
928 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
933 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
936 fprintf (stderr
, "Using %s\n", term
);
937 #ifdef HAVE_WINDOW_SYSTEM
938 inhibit_window_system
= 1; /* -t => -nw */
945 /* Command line option --no-windows is deprecated and thus not mentioned
946 in the manual and usage informations. */
947 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
948 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
949 inhibit_window_system
= 1;
951 /* Handle the -batch switch, which means don't do interactive display. */
953 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
956 Vundo_outer_limit
= Qnil
;
958 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
960 noninteractive
= 1; /* Set batch mode. */
961 /* Convert --script to -scriptload, un-skip it, and sort again
962 so that it will be handled in proper sequence. */
963 /* FIXME broken for --script=FILE - is that supposed to work? */
964 argv
[skip_args
- 1] = (char *) "-scriptload";
966 sort_args (argc
, argv
);
969 /* Handle the --help option, which gives a usage message. */
970 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
972 printf (USAGE1
, argv
[0], USAGE2
);
978 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
979 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
984 /* Start as a daemon: fork a new child process which will run the
985 rest of the initialization code, then exit.
987 Detaching a daemon requires the following steps:
991 - close the tty file-descriptors
993 We only want to do the last 2 steps once the daemon is ready to
994 serve requests, i.e. after loading .emacs (initialization).
995 OTOH initialization may start subprocesses (e.g. ispell) and these
996 should be run from the proper process (the one that will end up
997 running as daemon) and with the proper "session id" in order for
998 them to keep working after detaching, so fork and setsid need to be
999 performed before initialization.
1001 We want to avoid exiting before the server socket is ready, so
1002 use a pipe for synchronization. The parent waits for the child
1003 to close its end of the pipe (using `daemon-initialized')
1005 if (pipe (daemon_pipe
) == -1)
1007 fprintf (stderr
, "Cannot pipe!\n");
1011 #ifndef NS_IMPL_COCOA
1013 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1014 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1015 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1018 #else /* NS_IMPL_COCOA */
1019 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1020 forked process: http://developer.apple.com/ReleaseNotes/
1021 CoreFoundation/CoreFoundation.html)
1022 We mark being in the exec'd process by a daemon name argument of
1023 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1024 NAME is the original daemon name, if any. */
1025 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1026 f
= fork (); /* in orig */
1028 f
= 0; /* in exec'd */
1029 #endif /* NS_IMPL_COCOA */
1035 /* Close unused writing end of the pipe. */
1036 close (daemon_pipe
[1]);
1038 /* Just wait for the child to close its end of the pipe. */
1041 retval
= read (daemon_pipe
[0], &buf
, 1);
1043 while (retval
== -1 && errno
== EINTR
);
1047 fprintf (stderr
, "Error reading status from child\n");
1050 else if (retval
== 0)
1052 fprintf (stderr
, "Error: server did not start correctly\n");
1056 close (daemon_pipe
[0]);
1061 fprintf (stderr
, "Cannot fork!\n");
1065 #ifdef NS_IMPL_COCOA
1067 /* In orig process, forked as child, OR in exec'd. */
1068 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1069 { /* In orig, child: now exec w/special daemon name. */
1072 snprintf (fdStr
, sizeof fdStr
,
1073 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1074 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1076 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1078 fprintf (stderr
, "daemon: child name too long\n");
1082 argv
[skip_args
] = fdStr
;
1084 execv (argv
[0], argv
);
1085 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1089 /* In exec'd: parse special dname into pipe and name info. */
1090 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1091 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1093 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1096 dname_arg2
[0] = '\0';
1097 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1099 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1101 #endif /* NS_IMPL_COCOA */
1104 daemon_name
= xstrdup (dname_arg
);
1105 /* Close unused reading end of the pipe. */
1106 close (daemon_pipe
[0]);
1107 /* Make sure that the used end of the pipe is closed on exec, so
1108 that it is not accessible to programs started from .emacs. */
1109 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1115 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1120 if (! noninteractive
)
1122 #if defined (USG5) && defined (INTERRUPT_INPUT)
1125 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1127 extern void malloc_enable_thread (void);
1129 malloc_enable_thread ();
1136 /* Don't catch SIGHUP if dumping. */
1143 sigblock (sigmask (SIGHUP
));
1144 /* In --batch mode, don't catch SIGHUP if already ignored.
1145 That makes nohup work. */
1146 if (! noninteractive
1147 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1148 signal (SIGHUP
, fatal_error_signal
);
1149 sigunblock (sigmask (SIGHUP
));
1154 ! noninteractive
|| initialized
1160 /* Don't catch these signals in batch mode if dumping.
1161 On some machines, this sets static data that would make
1162 signal fail to work right when the dumped Emacs is run. */
1163 signal (SIGQUIT
, fatal_error_signal
);
1164 signal (SIGILL
, fatal_error_signal
);
1165 signal (SIGTRAP
, fatal_error_signal
);
1167 add_user_signal (SIGUSR1
, "sigusr1");
1170 add_user_signal (SIGUSR2
, "sigusr2");
1173 signal (SIGABRT
, fatal_error_signal
);
1176 signal (SIGHWE
, fatal_error_signal
);
1179 signal (SIGPRE
, fatal_error_signal
);
1182 signal (SIGORE
, fatal_error_signal
);
1185 signal (SIGUME
, fatal_error_signal
);
1188 signal (SIGDLK
, fatal_error_signal
);
1191 signal (SIGCPULIM
, fatal_error_signal
);
1194 /* This is missing on some systems - OS/2, for example. */
1195 signal (SIGIOT
, fatal_error_signal
);
1198 signal (SIGEMT
, fatal_error_signal
);
1200 signal (SIGFPE
, fatal_error_signal
);
1202 signal (SIGBUS
, fatal_error_signal
);
1204 signal (SIGSEGV
, fatal_error_signal
);
1206 signal (SIGSYS
, fatal_error_signal
);
1208 /* May need special treatment on MS-Windows. See
1209 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1210 Please update the doc of kill-emacs, kill-emacs-hook, and
1211 NEWS if you change this.
1213 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1214 signal (SIGTERM
, fatal_error_signal
);
1216 signal (SIGXCPU
, fatal_error_signal
);
1219 signal (SIGXFSZ
, fatal_error_signal
);
1220 #endif /* SIGXFSZ */
1223 /* This just means available memory is getting low. */
1224 signal (SIGDANGER
, memory_warning_signal
);
1228 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1229 signal (SIGXCPU
, fatal_error_signal
);
1230 signal (SIGIOINT
, fatal_error_signal
);
1231 signal (SIGGRANT
, fatal_error_signal
);
1232 signal (SIGRETRACT
, fatal_error_signal
);
1233 signal (SIGSOUND
, fatal_error_signal
);
1234 signal (SIGMSG
, fatal_error_signal
);
1238 noninteractive1
= noninteractive
;
1240 /* Perform basic initializations (not merely interning symbols). */
1247 init_character_once ();
1248 init_charset_once ();
1249 init_coding_once ();
1250 init_syntax_once (); /* Create standard syntax table. */
1251 init_category_once (); /* Create standard category table. */
1252 /* Must be done before init_buffer. */
1253 init_casetab_once ();
1254 init_buffer_once (); /* Create buffer table and some buffers. */
1255 init_minibuf_once (); /* Create list of minibuffers. */
1256 /* Must precede init_window_once. */
1258 /* Call syms_of_xfaces before init_window_once because that
1259 function creates Vterminal_frame. Termcap frames now use
1260 faces, and the face implementation uses some symbols as
1263 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1264 be better to arrange things not to have this dependency. */
1266 /* Call syms_of_keyboard before init_window_once because
1267 keyboard sets up symbols that include some face names that
1268 the X support will want to use. This can happen when
1269 CANNOT_DUMP is defined. */
1270 syms_of_keyboard ();
1272 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1275 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1277 /* Before syms_of_coding because it initializes Qcharsetp. */
1279 /* Before init_window_once, because it sets up the
1280 Vcoding_system_hash_table. */
1281 syms_of_coding (); /* This should be after syms_of_fileio. */
1283 init_window_once (); /* Init the window system. */
1284 #ifdef HAVE_WINDOW_SYSTEM
1285 init_fringe_once (); /* Swap bitmaps if necessary. */
1286 #endif /* HAVE_WINDOW_SYSTEM */
1291 if (do_initial_setlocale
)
1294 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1295 Vsystem_time_locale
= Vprevious_system_time_locale
;
1300 #ifdef CLASH_DETECTION
1304 running_asynch_code
= 0;
1307 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1310 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1313 ns_alloc_autorelease_pool();
1314 if (!noninteractive
)
1316 #ifdef NS_IMPL_COCOA
1317 if (skip_args
< argc
)
1319 /* FIXME: Do the right thing if getenv returns NULL, or if
1321 if (!strncmp(argv
[skip_args
], "-psn", 4))
1324 chdir (getenv ("HOME"));
1326 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1329 chdir (getenv ("HOME"));
1334 #endif /* HAVE_NS */
1336 #ifdef HAVE_X_WINDOWS
1337 /* Stupid kludge to catch command-line display spec. We can't
1338 handle this argument entirely in window system dependent code
1339 because we don't even know which window system dependent code
1340 to run until we've recognized this argument. */
1342 char *displayname
= 0;
1343 int count_before
= skip_args
;
1345 /* Skip any number of -d options, but only use the last one. */
1348 int count_before_this
= skip_args
;
1350 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1352 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1357 count_before
= count_before_this
;
1360 /* If we have the form --display=NAME,
1361 convert it into -d name.
1362 This requires inserting a new element into argv. */
1363 if (displayname
&& count_before
< skip_args
)
1365 if (skip_args
== count_before
+ 1)
1367 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1368 (argc
- (count_before
+ 2)) * sizeof *argv
);
1369 argv
[count_before
+ 2] = displayname
;
1372 argv
[count_before
+ 1] = (char *) "-d";
1377 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1378 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1382 /* Don't actually discard this arg. */
1383 skip_args
= count_before
;
1385 #else /* !HAVE_X_WINDOWS */
1388 int count_before
= skip_args
;
1390 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1391 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1394 skip_args
= count_before
;
1398 /* argmatch must not be used after here,
1399 except when bulding temacs
1400 because the -d argument has not been skipped in skip_args. */
1403 /* Call early 'cause init_environment needs it. */
1405 /* Set defaults for several environment variables. */
1407 init_environment (argc
, argv
, skip_args
);
1414 /* Initialize environment from registry settings. */
1415 init_environment (argv
);
1416 init_ntproc (); /* must precede init_editfns. */
1426 /* Initialize and GC-protect Vinitial_environment and
1427 Vprocess_environment before set_initial_environment fills them
1430 syms_of_callproc ();
1431 /* egetenv is a pretty low-level facility, which may get called in
1432 many circumstances; it seems flimsy to put off initializing it
1433 until calling init_callproc. Do not do it when dumping. */
1434 if (initialized
|| ((strcmp (argv
[argc
-1], "dump") != 0
1435 && strcmp (argv
[argc
-1], "bootstrap") != 0)))
1436 set_initial_environment ();
1438 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1439 if this is not done. Do it after set_global_environment so that we
1440 don't pollute Vglobal_environment. */
1441 /* Setting LANG here will defeat the startup locale processing... */
1446 init_buffer (); /* Init default directory of main buffer. */
1448 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1449 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1453 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1454 Lisp_Object old_log_max
;
1455 old_log_max
= Vmessage_log_max
;
1456 XSETFASTINT (Vmessage_log_max
, 0);
1457 message_dolog ("", 0, 1, 0);
1458 Vmessage_log_max
= old_log_max
;
1461 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1464 /* Intern the names of all standard functions and variables;
1465 define standard keys. */
1469 /* The basic levels of Lisp must come first. Note that
1470 syms_of_data and some others have already been called. */
1476 syms_of_floatfns ();
1479 syms_of_bytecode ();
1481 syms_of_casefiddle ();
1483 syms_of_category ();
1485 syms_of_character ();
1492 syms_of_filelock ();
1495 /* syms_of_keymap (); */
1503 syms_of_terminal ();
1509 syms_of_textprop ();
1510 syms_of_composite ();
1513 #endif /* WINDOWSNT */
1517 #ifdef HAVE_WINDOW_SYSTEM
1520 #endif /* HAVE_WINDOW_SYSTEM */
1521 #ifdef HAVE_X_WINDOWS
1526 syms_of_xsettings ();
1533 #endif /* HAVE_X_WINDOWS */
1544 syms_of_w32select ();
1547 #endif /* HAVE_NTGUI */
1553 syms_of_win16select();
1560 syms_of_nsselect ();
1562 #endif /* HAVE_NS */
1569 syms_of_dbusbind ();
1570 #endif /* HAVE_DBUS */
1574 #endif /* WINDOWSNT */
1576 keys_of_casefiddle ();
1579 keys_of_keyboard ();
1585 /* Initialization that must be done even if the global variable
1586 initialized is non zero. */
1588 globals_of_w32fns ();
1589 globals_of_w32menu ();
1590 globals_of_w32select ();
1591 #endif /* HAVE_NTGUI */
1596 init_editfns (); /* init_process uses Voperating_system_release. */
1597 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1598 init_keyboard (); /* This too must precede init_sys_modes. */
1599 if (!noninteractive
)
1600 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1603 #ifdef HAVE_WINDOW_SYSTEM
1606 #endif /* HAVE_WINDOW_SYSTEM */
1618 /* Handle -l loadup, args passed by Makefile. */
1619 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1620 Vtop_level
= Fcons (intern_c_string ("load"),
1621 Fcons (build_string (file
), Qnil
));
1622 /* Unless next switch is -nl, load "loadup.el" first thing. */
1624 Vtop_level
= Fcons (intern_c_string ("load"),
1625 Fcons (build_string ("loadup.el"), Qnil
));
1632 /* If the execution TZ happens to be the same as the dump TZ,
1633 change it to some other value and then change it back,
1634 to force the underlying implementation to reload the TZ info.
1635 This is needed on implementations that load TZ info from files,
1636 since the TZ file contents may differ between dump and execution. */
1637 char *tz
= getenv ("TZ");
1638 if (tz
&& !strcmp (tz
, dump_tz
))
1648 /* Set up for profiling. This is known to work on FreeBSD,
1649 GNU/Linux and MinGW. It might work on some other systems too.
1650 Give it a try and tell us if it works on your system. To compile
1651 for profiling, use the configure option --enable-profiling. */
1652 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1656 extern void _mcleanup ();
1658 extern unsigned char etext
asm ("etext");
1662 #ifdef HAVE___EXECUTABLE_START
1663 /* This symbol is defined by GNU ld to the start of the text
1665 extern char __executable_start
[];
1667 extern void safe_bcopy ();
1671 #ifdef HAVE___EXECUTABLE_START
1672 monstartup (__executable_start
, &etext
);
1674 /* This uses safe_bcopy because that function comes first in the
1675 Emacs executable. It might be better to use something that
1676 gives the start of the text segment, but start_of_text is not
1677 defined on all systems now. */
1678 /* FIXME: Does not work on architectures with function
1680 monstartup (safe_bcopy
, &etext
);
1690 #ifdef LOCALTIME_CACHE
1691 /* Some versions of localtime have a bug. They cache the value of the time
1692 zone rather than looking it up every time. Since localtime() is
1693 called to bolt the undumping time into the undumped emacs, this
1694 results in localtime ignoring the TZ environment variable.
1695 This flushes the new TZ value into localtime. */
1697 #endif /* defined (LOCALTIME_CACHE) */
1699 /* Enter editor command loop. This never returns. */
1705 /* Sort the args so we can find the most important ones
1706 at the beginning of argv. */
1708 /* First, here's a table of all the standard options. */
1710 struct standard_args
1713 const char *longname
;
1718 static const struct standard_args standard_args
[] =
1720 { "-version", "--version", 150, 0 },
1721 { "-chdir", "--chdir", 130, 1 },
1722 { "-t", "--terminal", 120, 1 },
1723 { "-nw", "--no-window-system", 110, 0 },
1724 { "-nw", "--no-windows", 110, 0 },
1725 { "-batch", "--batch", 100, 0 },
1726 { "-script", "--script", 100, 1 },
1727 { "-daemon", "--daemon", 99, 0 },
1728 { "-help", "--help", 90, 0 },
1729 { "-nl", "--no-loadup", 70, 0 },
1730 { "-nsl", "--no-site-lisp", 65, 0 },
1731 /* -d must come last before the options handled in startup.el. */
1732 { "-d", "--display", 60, 1 },
1733 { "-display", 0, 60, 1 },
1734 /* Now for the options handled in `command-line' (startup.el). */
1735 /* (Note that to imply -nsl, -Q is partially handled here.) */
1736 { "-Q", "--quick", 55, 0 },
1737 { "-quick", 0, 55, 0 },
1738 { "-q", "--no-init-file", 50, 0 },
1739 { "-no-init-file", 0, 50, 0 },
1740 { "-no-site-file", "--no-site-file", 40, 0 },
1741 { "-u", "--user", 30, 1 },
1742 { "-user", 0, 30, 1 },
1743 { "-debug-init", "--debug-init", 20, 0 },
1744 { "-iconic", "--iconic", 15, 0 },
1745 { "-D", "--basic-display", 12, 0},
1746 { "-basic-display", 0, 12, 0},
1747 { "-nbc", "--no-blinking-cursor", 12, 0 },
1748 /* Now for the options handled in `command-line-1' (startup.el). */
1749 { "-nbi", "--no-bitmap-icon", 10, 0 },
1750 { "-bg", "--background-color", 10, 1 },
1751 { "-background", 0, 10, 1 },
1752 { "-fg", "--foreground-color", 10, 1 },
1753 { "-foreground", 0, 10, 1 },
1754 { "-bd", "--border-color", 10, 1 },
1755 { "-bw", "--border-width", 10, 1 },
1756 { "-ib", "--internal-border", 10, 1 },
1757 { "-ms", "--mouse-color", 10, 1 },
1758 { "-cr", "--cursor-color", 10, 1 },
1759 { "-fn", "--font", 10, 1 },
1760 { "-font", 0, 10, 1 },
1761 { "-fs", "--fullscreen", 10, 0 },
1762 { "-fw", "--fullwidth", 10, 0 },
1763 { "-fh", "--fullheight", 10, 0 },
1764 { "-mm", "--maximized", 10, 0 },
1765 { "-g", "--geometry", 10, 1 },
1766 { "-geometry", 0, 10, 1 },
1767 { "-T", "--title", 10, 1 },
1768 { "-title", 0, 10, 1 },
1769 { "-name", "--name", 10, 1 },
1770 { "-xrm", "--xrm", 10, 1 },
1771 { "-parent-id", "--parent-id", 10, 1 },
1772 { "-r", "--reverse-video", 5, 0 },
1774 { "-reverse", 0, 5, 0 },
1775 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1776 { "-vb", "--vertical-scroll-bars", 5, 0 },
1777 { "-color", "--color", 5, 0},
1778 { "-no-splash", "--no-splash", 3, 0 },
1779 { "-no-desktop", "--no-desktop", 3, 0 },
1781 { "-NSAutoLaunch", 0, 5, 1 },
1782 { "-NXAutoLaunch", 0, 5, 1 },
1783 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1784 { "-_NSMachLaunch", 0, 85, 1 },
1785 { "-MachLaunch", 0, 85, 1 },
1786 { "-macosx", 0, 85, 0 },
1787 { "-NSHost", 0, 85, 1 },
1789 /* These have the same priority as ordinary file name args,
1790 so they are not reordered with respect to those. */
1791 { "-L", "--directory", 0, 1 },
1792 { "-directory", 0, 0, 1 },
1793 { "-l", "--load", 0, 1 },
1794 { "-load", 0, 0, 1 },
1795 /* This has no longname, because using --scriptload confuses sort_args,
1796 because then the --script long option seems to match twice; ie
1797 you can't have a long option which is a prefix of another long
1798 option. In any case, this is entirely an internal option. */
1799 { "-scriptload", NULL
, 0, 1 },
1800 { "-f", "--funcall", 0, 1 },
1801 { "-funcall", 0, 0, 1 },
1802 { "-eval", "--eval", 0, 1 },
1803 { "-execute", "--execute", 0, 1 },
1804 { "-find-file", "--find-file", 0, 1 },
1805 { "-visit", "--visit", 0, 1 },
1806 { "-file", "--file", 0, 1 },
1807 { "-insert", "--insert", 0, 1 },
1809 { "-NXOpen", 0, 0, 1 },
1810 { "-NXOpenTemp", 0, 0, 1 },
1811 { "-NSOpen", 0, 0, 1 },
1812 { "-NSOpenTemp", 0, 0, 1 },
1813 { "-GSFilePath", 0, 0, 1 },
1815 /* This should be processed after ordinary file name args and the like. */
1816 { "-kill", "--kill", -10, 0 },
1819 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1820 so that the highest priority ones come first.
1821 Do not change the order of elements of equal priority.
1822 If an option takes an argument, keep it and its argument together.
1824 If an option that takes no argument appears more
1825 than once, eliminate all but one copy of it. */
1828 sort_args (int argc
, char **argv
)
1830 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1831 /* For each element of argv,
1832 the corresponding element of options is:
1833 0 for an option that takes no arguments,
1834 1 for an option that takes one argument, etc.
1835 -1 for an ordinary non-option argument. */
1836 int *options
= xnmalloc (argc
, sizeof *options
);
1837 int *priority
= xnmalloc (argc
, sizeof *priority
);
1839 int incoming_used
= 1;
1843 /* Categorize all the options,
1844 and figure out which argv elts are option arguments. */
1845 for (from
= 1; from
< argc
; from
++)
1849 if (argv
[from
][0] == '-')
1853 /* If we have found "--", don't consider
1854 any more arguments as options. */
1855 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1857 /* Leave the "--", and everything following it, at the end. */
1858 for (; from
< argc
; from
++)
1860 priority
[from
] = -100;
1866 /* Look for a match with a known old-fashioned option. */
1867 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1868 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1870 options
[from
] = standard_args
[i
].nargs
;
1871 priority
[from
] = standard_args
[i
].priority
;
1872 if (from
+ standard_args
[i
].nargs
>= argc
)
1873 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1874 from
+= standard_args
[i
].nargs
;
1878 /* Look for a match with a known long option.
1879 MATCH is -1 if no match so far, -2 if two or more matches so far,
1880 >= 0 (the table index of the match) if just one match so far. */
1881 if (argv
[from
][1] == '-')
1883 char const *equals
= strchr (argv
[from
], '=');
1885 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1890 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1891 if (standard_args
[i
].longname
1892 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1901 /* If we found exactly one match, use that. */
1904 options
[from
] = standard_args
[match
].nargs
;
1905 priority
[from
] = standard_args
[match
].priority
;
1906 /* If --OPTION=VALUE syntax is used,
1907 this option uses just one argv element. */
1910 if (from
+ options
[from
] >= argc
)
1911 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1912 from
+= options
[from
];
1914 /* FIXME When match < 0, shouldn't there be some error,
1915 or at least indication to the user that there was a
1922 /* Copy the arguments, in order of decreasing priority, to NEW. */
1924 while (incoming_used
< argc
)
1927 int best_priority
= -9999;
1929 /* Find the highest priority remaining option.
1930 If several have equal priority, take the first of them. */
1931 for (from
= 1; from
< argc
; from
++)
1933 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1935 best_priority
= priority
[from
];
1938 /* Skip option arguments--they are tied to the options. */
1939 if (options
[from
] > 0)
1940 from
+= options
[from
];
1946 /* Copy the highest priority remaining option, with its args, to NEW.
1947 Unless it is a duplicate of the previous one. */
1948 if (! (options
[best
] == 0
1949 && ! strcmp (new[to
- 1], argv
[best
])))
1951 new[to
++] = argv
[best
];
1952 for (i
= 0; i
< options
[best
]; i
++)
1953 new[to
++] = argv
[best
+ i
+ 1];
1956 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1958 /* Clear out this option in ARGV. */
1960 for (i
= 0; i
< options
[best
]; i
++)
1961 argv
[best
+ i
+ 1] = 0;
1964 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1968 memcpy (argv
, new, sizeof (char *) * argc
);
1975 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1976 doc
: /* Exit the Emacs job and kill it.
1977 If ARG is an integer, return ARG as the exit program code.
1978 If ARG is a string, stuff it as keyboard input.
1980 This function is called upon receipt of the signals SIGTERM
1981 or SIGHUP, and upon SIGINT in batch mode.
1983 The value of `kill-emacs-hook', if not void,
1984 is a list of functions (of no args),
1985 all of which are called before Emacs is actually killed. */)
1988 struct gcpro gcpro1
;
1996 hook
= intern ("kill-emacs-hook");
1997 Frun_hooks (1, &hook
);
2001 #ifdef HAVE_X_WINDOWS
2002 /* Transfer any clipboards we own to the clipboard manager. */
2003 x_clipboard_manager_save_all ();
2006 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2008 /* If we have an auto-save list file,
2009 kill it because we are exiting Emacs deliberately (not crashing).
2010 Do it after shut_down_emacs, which does an auto-save. */
2011 if (STRINGP (Vauto_save_list_file_name
))
2012 unlink (SSDATA (Vauto_save_list_file_name
));
2014 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
2018 /* Perform an orderly shutdown of Emacs. Autosave any modified
2019 buffers, kill any child processes, clean up the terminal modes (if
2020 we're in the foreground), and other stuff like that. Don't perform
2021 any redisplay; this may be called when Emacs is shutting down in
2022 the background, or after its X connection has died.
2024 If SIG is a signal number, print a message for it.
2026 This is called by fatal signal handlers, X protocol error handlers,
2030 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2032 /* Prevent running of hooks from now on. */
2035 /* Don't update display from now on. */
2036 Vinhibit_redisplay
= Qt
;
2038 /* If we are controlling the terminal, reset terminal modes. */
2041 int pgrp
= EMACS_GETPGRP (0);
2042 int tpgrp
= tcgetpgrp (0);
2043 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2045 reset_all_sys_modes ();
2046 if (sig
&& sig
!= SIGTERM
)
2047 fprintf (stderr
, "Fatal error (%d)", sig
);
2052 reset_all_sys_modes ();
2055 stuff_buffered_input (stuff
);
2057 inhibit_sentinels
= 1;
2058 kill_buffer_processes (Qnil
);
2059 Fdo_auto_save (Qt
, Qnil
);
2061 #ifdef CLASH_DETECTION
2062 unlock_all_files ();
2065 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2066 #ifdef HAVE_X_WINDOWS
2067 /* It's not safe to call intern here. Maybe we are crashing. */
2068 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2069 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2070 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2072 Fx_close_current_connection ();
2073 #endif /* HAVE_X_WINDOWS */
2077 /* There is a tendency for a SIGIO signal to arrive within exit,
2078 and cause a SIGHUP because the input descriptor is already closed. */
2080 signal (SIGIO
, SIG_IGN
);
2087 /* Do this only if terminating normally, we want glyph matrices
2088 etc. in a core dump. */
2089 if (sig
== 0 || sig
== SIGTERM
)
2091 check_glyph_memory ();
2092 check_message_stack ();
2100 ns_term_shutdown (sig
);
2110 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2111 doc
: /* Dump current state of Emacs into executable file FILENAME.
2112 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2113 This is used in the file `loadup.el' when building Emacs.
2115 You must run Emacs in batch mode in order to dump it. */)
2116 (Lisp_Object filename
, Lisp_Object symfile
)
2120 int count
= SPECPDL_INDEX ();
2124 if (! noninteractive
)
2125 error ("Dumping Emacs works only in batch mode");
2129 /* Warn if the gap between BSS end and heap start is larger than this. */
2130 # define MAX_HEAP_BSS_DIFF (1024*1024)
2132 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2134 fprintf (stderr
, "**************************************************\n");
2135 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2136 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2138 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2139 fprintf (stderr
, "fail because of this. See the section about\n");
2140 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2141 fprintf (stderr
, "**************************************************\n");
2143 #endif /* GNU_LINUX */
2145 /* Bind `command-line-processed' to nil before dumping,
2146 so that the dumped Emacs will process its command line
2147 and set up to work with X windows if appropriate. */
2148 symbol
= intern ("command-line-processed");
2149 specbind (symbol
, Qnil
);
2151 CHECK_STRING (filename
);
2152 filename
= Fexpand_file_name (filename
, Qnil
);
2153 if (!NILP (symfile
))
2155 CHECK_STRING (symfile
);
2156 if (SCHARS (symfile
))
2157 symfile
= Fexpand_file_name (symfile
, Qnil
);
2161 Vpurify_flag
= Qnil
;
2164 set_time_zone_rule (dump_tz
);
2165 #ifndef LOCALTIME_CACHE
2166 /* Force a tz reload, since set_time_zone_rule doesn't. */
2172 /* Tell malloc where start of impure now is. */
2173 /* Also arrange for warnings when nearly out of space. */
2174 #ifndef SYSTEM_MALLOC
2176 /* On Windows, this was done before dumping, and that once suffices.
2177 Meanwhile, my_edata is not valid on Windows. */
2179 extern char my_edata
[];
2180 memory_warnings (my_edata
, malloc_warning
);
2182 #endif /* not WINDOWSNT */
2183 #if defined (HAVE_PTHREAD) && !defined SYNC_INPUT
2184 /* Pthread may call malloc before main, and then we will get an endless
2185 loop, because pthread_self (see alloc.c) calls malloc the first time
2186 it is called on some systems. */
2187 reset_malloc_hooks ();
2189 #endif /* not SYSTEM_MALLOC */
2190 #ifdef DOUG_LEA_MALLOC
2191 malloc_state_ptr
= malloc_get_state ();
2194 #ifdef USE_MMAP_FOR_BUFFERS
2197 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2198 #ifdef USE_MMAP_FOR_BUFFERS
2201 #ifdef DOUG_LEA_MALLOC
2202 free (malloc_state_ptr
);
2207 return unbind_to (count
, Qnil
);
2210 #endif /* not CANNOT_DUMP */
2213 /* Recover from setlocale (LC_ALL, ""). */
2217 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2218 so that numbers are read and printed properly for Emacs Lisp. */
2219 setlocale (LC_NUMERIC
, "C");
2222 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2225 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2227 if (! EQ (*plocale
, desired_locale
))
2229 *plocale
= desired_locale
;
2230 setlocale (category
, (STRINGP (desired_locale
)
2231 ? SSDATA (desired_locale
)
2236 /* Set system time locale to match Vsystem_time_locale, if possible. */
2238 synchronize_system_time_locale (void)
2240 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2241 Vsystem_time_locale
);
2244 /* Set system messages locale to match Vsystem_messages_locale, if
2247 synchronize_system_messages_locale (void)
2250 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2251 Vsystem_messages_locale
);
2254 #endif /* HAVE_SETLOCALE */
2261 decode_env_path (const char *evarname
, const char *defalt
)
2263 const char *path
, *p
;
2264 Lisp_Object lpath
, element
, tem
;
2266 /* It's okay to use getenv here, because this function is only used
2267 to initialize variables when Emacs starts up, and isn't called
2270 path
= getenv (evarname
);
2276 /* Ensure values from the environment use the proper directory separator. */
2279 char *path_copy
= alloca (strlen (path
) + 1);
2280 strcpy (path_copy
, path
);
2281 dostounix_filename (path_copy
);
2288 p
= strchr (path
, SEPCHAR
);
2290 p
= path
+ strlen (path
);
2291 element
= (p
- path
? make_string (path
, p
- path
)
2292 : build_string ("."));
2294 /* Add /: to the front of the name
2295 if it would otherwise be treated as magic. */
2296 tem
= Ffind_file_name_handler (element
, Qt
);
2298 /* However, if the handler says "I'm safe",
2299 don't bother adding /:. */
2303 prop
= Fget (tem
, intern ("safe-magic"));
2309 element
= concat2 (build_string ("/:"), element
);
2311 lpath
= Fcons (element
, lpath
);
2317 return Fnreverse (lpath
);
2320 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2321 doc
: /* Return non-nil if the current emacs process is a daemon.
2322 If the daemon was given a name argument, return that name. */)
2327 return build_string (daemon_name
);
2334 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2335 doc
: /* Mark the Emacs daemon as being initialized.
2336 This finishes the daemonization process by doing the other half of detaching
2337 from the parent process and its tty file descriptors. */)
2344 error ("This function can only be called if emacs is run as a daemon");
2346 if (daemon_pipe
[1] < 0)
2347 error ("The daemon has already been initialized");
2349 if (NILP (Vafter_init_time
))
2350 error ("This function can only be called after loading the init files");
2352 /* Get rid of stdin, stdout and stderr. */
2353 nfd
= open ("/dev/null", O_RDWR
);
2355 err
|= dup2 (nfd
, 0) < 0;
2356 err
|= dup2 (nfd
, 1) < 0;
2357 err
|= dup2 (nfd
, 2) < 0;
2358 err
|= close (nfd
) != 0;
2360 /* Closing the pipe will notify the parent that it can exit.
2361 FIXME: In case some other process inherited the pipe, closing it here
2362 won't notify the parent because it's still open elsewhere, so we
2363 additionally send a byte, just to make sure the parent really exits.
2364 Instead, we should probably close the pipe in start-process and
2365 call-process to make sure the pipe is never inherited by
2367 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2368 err
|= close (daemon_pipe
[1]) != 0;
2369 /* Set it to an invalid value so we know we've already run this function. */
2370 daemon_pipe
[1] = -1;
2373 error ("I/O error during daemon initialization");
2378 syms_of_emacs (void)
2380 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2381 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2384 defsubr (&Sdump_emacs
);
2387 defsubr (&Skill_emacs
);
2389 defsubr (&Sinvocation_name
);
2390 defsubr (&Sinvocation_directory
);
2391 defsubr (&Sdaemonp
);
2392 defsubr (&Sdaemon_initialized
);
2394 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2395 doc
: /* Args passed by shell to Emacs, as a list of strings.
2396 Many arguments are deleted from the list as they are processed. */);
2398 DEFVAR_LISP ("system-type", Vsystem_type
,
2399 doc
: /* The value is a symbol indicating the type of operating system you are using.
2401 `gnu' compiled for a GNU Hurd system.
2402 `gnu/linux' compiled for a GNU/Linux system.
2403 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2404 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2405 `ms-dos' compiled as an MS-DOS application.
2406 `windows-nt' compiled as a native W32 application.
2407 `cygwin' compiled using the Cygwin library.
2408 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2409 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2410 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2411 /* The above values are from SYSTEM_TYPE in include files under src/s. */
2413 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2414 doc
: /* Value is string indicating configuration Emacs was built for.
2415 On MS-Windows, the value reflects the OS flavor and version on which
2416 Emacs is running. */);
2417 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2419 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2420 doc
: /* String containing the configuration options Emacs was built with. */);
2421 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2423 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2424 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2426 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2427 doc
: /* Hook to be run when `kill-emacs' is called.
2428 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2429 in other similar situations), functions placed on this hook should not
2430 expect to be able to interact with the user. To ask for confirmation,
2431 see `kill-emacs-query-functions' instead.
2433 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2434 `noninteractive' was non-nil. */);
2435 Vkill_emacs_hook
= Qnil
;
2437 DEFVAR_LISP ("path-separator", Vpath_separator
,
2438 doc
: /* String containing the character that separates directories in
2439 search paths, such as PATH and other similar environment variables. */);
2442 Vpath_separator
= make_string (&c
, 1);
2445 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2446 doc
: /* The program name that was used to run Emacs.
2447 Any directory names are omitted. */);
2449 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2450 doc
: /* The directory in which the Emacs executable was found, to run it.
2451 The value is nil if that directory's name is not known. */);
2453 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2454 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2455 This is non-nil when we can't find those directories in their standard
2456 installed locations, but we can find them near where the Emacs executable
2458 Vinstallation_directory
= Qnil
;
2460 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2461 doc
: /* System locale for messages. */);
2462 Vsystem_messages_locale
= Qnil
;
2464 DEFVAR_LISP ("previous-system-messages-locale",
2465 Vprevious_system_messages_locale
,
2466 doc
: /* Most recently used system locale for messages. */);
2467 Vprevious_system_messages_locale
= Qnil
;
2469 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2470 doc
: /* System locale for time. */);
2471 Vsystem_time_locale
= Qnil
;
2473 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2474 doc
: /* Most recently used system locale for time. */);
2475 Vprevious_system_time_locale
= Qnil
;
2477 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2478 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2479 Vbefore_init_time
= Qnil
;
2481 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2482 doc
: /* Value of `current-time' after loading the init files.
2483 This is nil during initialization. */);
2484 Vafter_init_time
= Qnil
;
2486 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2487 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2488 inhibit_x_resources
= 0;
2490 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2491 doc
: /* Short copyright string for this version of Emacs. */);
2492 Vemacs_copyright
= build_string (emacs_copyright
);
2494 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2495 doc
: /* Version numbers of this version of Emacs. */);
2496 Vemacs_version
= build_string (emacs_version
);
2498 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2499 doc
: /* Alist of dynamic libraries vs external files implementing them.
2500 Each element is a list (LIBRARY FILE...), where the car is a symbol
2501 representing a supported external library, and the rest are strings giving
2502 alternate filenames for that library.
2504 Emacs tries to load the library from the files in the order they appear on
2505 the list; if none is loaded, the running session of Emacs won't have access
2508 Note that image types `pbm' and `xbm' do not need entries in this variable
2509 because they do not depend on external libraries and are always available.
2511 Also note that this is not a generic facility for accessing external
2512 libraries; only those already known by Emacs will be loaded. */);
2513 Vdynamic_library_alist
= Qnil
;
2514 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2516 /* Make sure IS_DAEMON starts up as false. */