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. */
132 #ifdef DOUG_LEA_MALLOC
133 /* Preserves a pointer to the memory allocated that copies that
134 static data inside glibc's malloc. */
135 static void *malloc_state_ptr
;
136 /* From glibc, a routine that returns a copy of the malloc internal state. */
137 extern void *malloc_get_state (void);
138 /* From glibc, a routine that overwrites the malloc internal state. */
139 extern int malloc_set_state (void*);
140 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
141 dumping. Used to work around a bug in glibc's malloc. */
142 static int malloc_using_checking
;
145 Lisp_Object Qfile_name_handler_alist
;
147 Lisp_Object Qrisky_local_variable
;
149 /* If non-zero, Emacs should not attempt to use a window-specific code,
150 but instead should use the virtual terminal under which it was started. */
151 int inhibit_window_system
;
153 /* If non-zero, a filter or a sentinel is running. Tested to save the match
154 data on the first attempt to change it inside asynchronous code. */
155 int running_asynch_code
;
157 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
158 /* If non-zero, -d was specified, meaning we're using some window system. */
162 /* An address near the bottom of the stack.
163 Tells GC how to save a copy of the stack. */
166 /* The address where the heap starts (from the first sbrk (0) call). */
167 static void *my_heap_start
;
169 /* The gap between BSS end and heap start as far as we can tell. */
170 static unsigned long heap_bss_diff
;
172 /* Nonzero means running Emacs without interactive terminal. */
175 /* Nonzero means remove site-lisp directories from load-path. */
178 /* Name for the server started by the daemon.*/
179 static char *daemon_name
;
181 /* Pipe used to send exit notification to the daemon parent at
185 /* Save argv and argc. */
189 static void sort_args (int argc
, char **argv
);
190 static void syms_of_emacs (void);
192 /* MSVC needs each string be shorter than 2048 bytes, so the usage
193 strings below are split to not overflow this limit. */
195 Usage: %s [OPTION-OR-FILENAME]...\n\
197 Run Emacs, the extensible, customizable, self-documenting real-time\n\
198 display editor. The recommended way to start Emacs for normal editing\n\
199 is with no options at all.\n\
201 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
202 read the main documentation for these command-line arguments.\n\
204 Initialization options:\n\
206 --batch do not do interactive display; implies -q\n\
207 --chdir DIR change to directory DIR\n\
208 --daemon start a server in the background\n\
209 --debug-init enable Emacs Lisp debugger for init file\n\
210 --display, -d DISPLAY use X server DISPLAY\n\
211 --no-desktop do not load a saved desktop\n\
212 --no-init-file, -q load neither ~/.emacs nor default.el\n\
213 --no-shared-memory, -nl do not use shared memory\n\
214 --no-site-file do not load site-start.el\n\
215 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
216 --no-splash do not display a splash screen on startup\n\
217 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
218 --quick, -Q equivalent to:\n\
219 -q --no-site-file --no-site-lisp --no-splash\n\
220 --script FILE run FILE as an Emacs Lisp script\n\
221 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
222 --user, -u USER load ~USER/.emacs instead of your own\n\
228 FILE visit FILE using find-file\n\
229 +LINE go to line LINE in next FILE\n\
230 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
231 --directory, -L DIR add DIR to variable load-path\n\
232 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
233 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
234 --file FILE visit FILE using find-file\n\
235 --find-file FILE visit FILE using find-file\n\
236 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
237 --insert FILE insert contents of FILE into current buffer\n\
238 --kill exit without asking for confirmation\n\
239 --load, -l FILE load Emacs Lisp FILE using the load function\n\
240 --visit FILE visit FILE using find-file\n\
246 --background-color, -bg COLOR window background color\n\
247 --basic-display, -D disable many display features;\n\
248 used for debugging Emacs\n\
249 --border-color, -bd COLOR main border color\n\
250 --border-width, -bw WIDTH width of main border\n\
251 --color, --color=MODE override color mode for character terminals;\n\
252 MODE defaults to `auto', and\n\
253 can also be `never', `always',\n\
254 or a mode name like `ansi8'\n\
255 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
256 --font, -fn FONT default font; must be fixed-width\n\
257 --foreground-color, -fg COLOR window foreground color\n\
258 --fullheight, -fh make the first frame high as the screen\n\
259 --fullscreen, -fs make the first frame fullscreen\n\
260 --fullwidth, -fw make the first frame wide as the screen\n\
261 --maximized, -mm make the first frame maximized\n\
262 --geometry, -g GEOMETRY window geometry\n\
263 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
264 --iconic start Emacs in iconified state\n\
265 --internal-border, -ib WIDTH width between text and main border\n\
266 --line-spacing, -lsp PIXELS additional space to put between lines\n\
267 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
268 --name NAME title for initial Emacs frame\n\
269 --no-blinking-cursor, -nbc disable blinking cursor\n\
270 --reverse-video, -r, -rv switch foreground and background\n\
271 --title, -T TITLE title for initial Emacs frame\n\
272 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
273 --xrm XRESOURCES set additional X resources\n\
274 --parent-id XID set parent window\n\
275 --help display this help and exit\n\
276 --version output version information and exit\n\
280 You can generally also specify long option names with a single -; for\n\
281 example, -batch as well as --batch. You can use any unambiguous\n\
282 abbreviation for a --option.\n\
284 Various environment variables and window system resources also affect\n\
285 Emacs' operation. See the main documentation.\n\
287 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
288 section of the Emacs manual or the file BUGS.\n"
291 /* Signal code for the fatal signal that was received. */
292 static int fatal_error_code
;
294 /* Nonzero if handling a fatal error already. */
295 int fatal_error_in_progress
;
297 /* If non-null, call this function from fatal_error_signal before
298 committing suicide. */
300 static void (*fatal_error_signal_hook
) (void);
302 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
303 /* When compiled with GTK and running under Gnome,
304 multiple threads may be created. Keep track of our main
305 thread to make sure signals are delivered to it (see syssignal.h). */
307 pthread_t main_thread
;
311 /* Handle bus errors, invalid instruction, etc. */
312 #ifndef FLOAT_CATCH_SIGILL
316 fatal_error_signal (int sig
)
318 SIGNAL_THREAD_CHECK (sig
);
319 fatal_error_code
= sig
;
320 signal (sig
, SIG_DFL
);
322 TOTALLY_UNBLOCK_INPUT
;
324 /* If fatal error occurs in code below, avoid infinite recursion. */
325 if (! fatal_error_in_progress
)
327 fatal_error_in_progress
= 1;
329 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
330 Fkill_emacs (make_number (sig
));
332 shut_down_emacs (sig
, 0, Qnil
);
335 /* Signal the same code; this time it will really be fatal.
336 Remember that since we're in a signal handler, the signal we're
337 going to send is probably blocked, so we have to unblock it if we
338 want to really receive it. */
340 sigunblock (sigmask (fatal_error_code
));
343 if (fatal_error_signal_hook
)
344 fatal_error_signal_hook ();
346 kill (getpid (), fatal_error_code
);
351 /* Handler for SIGDANGER. */
353 memory_warning_signal (sig
)
356 signal (sig
, memory_warning_signal
);
357 SIGNAL_THREAD_CHECK (sig
);
359 malloc_warning ("Operating system warns that virtual memory is running low.\n");
361 /* It might be unsafe to call do_auto_save now. */
362 force_auto_save_soon ();
366 /* We define abort, rather than using it from the library,
367 so that GDB can return from a breakpoint here.
368 MSDOS has its own definition in msdos.c. */
370 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
375 kill (getpid (), SIGABRT
);
376 /* This shouldn't be executed, but it prevents a warning. */
382 /* Code for dealing with Lisp access to the Unix command line. */
385 init_cmdargs (int argc
, char **argv
, int skip_args
)
388 Lisp_Object name
, dir
, handler
;
389 int count
= SPECPDL_INDEX ();
390 Lisp_Object raw_name
;
395 raw_name
= build_string (argv
[0]);
397 /* Add /: to the front of the name
398 if it would otherwise be treated as magic. */
399 handler
= Ffind_file_name_handler (raw_name
, Qt
);
400 if (! NILP (handler
))
401 raw_name
= concat2 (build_string ("/:"), raw_name
);
403 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
404 Vinvocation_directory
= Ffile_name_directory (raw_name
);
406 /* If we got no directory in argv[0], search PATH to find where
407 Emacs actually came from. */
408 if (NILP (Vinvocation_directory
))
411 int yes
= openp (Vexec_path
, Vinvocation_name
,
412 Vexec_suffixes
, &found
, make_number (X_OK
));
415 /* Add /: to the front of the name
416 if it would otherwise be treated as magic. */
417 handler
= Ffind_file_name_handler (found
, Qt
);
418 if (! NILP (handler
))
419 found
= concat2 (build_string ("/:"), found
);
420 Vinvocation_directory
= Ffile_name_directory (found
);
424 if (!NILP (Vinvocation_directory
)
425 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
426 /* Emacs was started with relative path, like ./emacs.
428 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
430 Vinstallation_directory
= Qnil
;
432 if (!NILP (Vinvocation_directory
))
434 dir
= Vinvocation_directory
;
435 name
= Fexpand_file_name (Vinvocation_name
, dir
);
438 Lisp_Object tem
, lib_src_exists
;
439 Lisp_Object etc_exists
, info_exists
;
441 /* See if dir contains subdirs for use by Emacs.
442 Check for the ones that would exist in a build directory,
443 not including lisp and info. */
444 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
445 lib_src_exists
= Ffile_exists_p (tem
);
448 /* MSDOS installations frequently remove lib-src, but we still
449 must set installation-directory, or else info won't find
450 its files (it uses the value of installation-directory). */
451 tem
= Fexpand_file_name (build_string ("info"), dir
);
452 info_exists
= Ffile_exists_p (tem
);
457 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
459 tem
= Fexpand_file_name (build_string ("etc"), dir
);
460 etc_exists
= Ffile_exists_p (tem
);
461 if (!NILP (etc_exists
))
463 Vinstallation_directory
464 = Ffile_name_as_directory (dir
);
469 /* See if dir's parent contains those subdirs. */
470 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
471 lib_src_exists
= Ffile_exists_p (tem
);
475 /* See the MSDOS commentary above. */
476 tem
= Fexpand_file_name (build_string ("../info"), dir
);
477 info_exists
= Ffile_exists_p (tem
);
482 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
484 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
485 etc_exists
= Ffile_exists_p (tem
);
486 if (!NILP (etc_exists
))
488 tem
= Fexpand_file_name (build_string (".."), dir
);
489 Vinstallation_directory
490 = Ffile_name_as_directory (tem
);
495 /* If the Emacs executable is actually a link,
496 next try the dir that the link points into. */
497 tem
= Ffile_symlink_p (name
);
500 name
= Fexpand_file_name (tem
, dir
);
501 dir
= Ffile_name_directory (name
);
508 Vcommand_line_args
= Qnil
;
510 for (i
= argc
- 1; i
>= 0; i
--)
512 if (i
== 0 || i
> skip_args
)
513 /* For the moment, we keep arguments as is in unibyte strings.
514 They are decoded in the function command-line after we know
515 locale-coding-system. */
517 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
521 unbind_to (count
, Qnil
);
524 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
525 doc
: /* Return the program name that was used to run Emacs.
526 Any directory names are omitted. */)
529 return Fcopy_sequence (Vinvocation_name
);
532 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
534 doc
: /* Return the directory name in which the Emacs executable was located. */)
537 return Fcopy_sequence (Vinvocation_directory
);
542 /* A valid but unlikely value for the TZ environment value.
543 It is OK (though a bit slower) if the user actually chooses this value. */
544 static char dump_tz
[] = "UtC0";
547 #ifndef ORDINARY_LINK
548 /* We don't include crtbegin.o and crtend.o in the link,
549 so these functions and variables might be missed.
550 Provide dummy definitions to avoid error.
551 (We don't have any real constructors or destructors.) */
554 /* Define a dummy function F. Declare F too, to pacify gcc
555 -Wmissing-prototypes. */
556 #define DEFINE_DUMMY_FUNCTION(f) \
557 void f (void) EXTERNALLY_VISIBLE; void f (void) {}
559 #ifndef GCC_CTORS_IN_LIBC
560 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
561 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
562 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
563 /* GNU/Linux has a bug in its library; avoid an error. */
565 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
567 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
568 #endif /* GCC_CTORS_IN_LIBC */
569 DEFINE_DUMMY_FUNCTION (__main
)
570 #endif /* __GNUC__ */
571 #endif /* ORDINARY_LINK */
573 /* Test whether the next argument in ARGV matches SSTR or a prefix of
574 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
575 (the argument is supposed to have a value) store in *VALPTR either
576 the next argument or the portion of this one after the equal sign.
577 ARGV is read starting at position *SKIPPTR; this index is advanced
578 by the number of arguments used.
580 Too bad we can't just use getopt for all of this, but we don't have
581 enough information to do it right. */
584 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
585 int minlen
, char **valptr
, int *skipptr
)
591 /* Don't access argv[argc]; give up in advance. */
592 if (argc
<= *skipptr
+ 1)
595 arg
= argv
[*skipptr
+1];
598 if (strcmp (arg
, sstr
) == 0)
602 *valptr
= argv
[*skipptr
+2];
609 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
610 ? p
- arg
: strlen (arg
));
611 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
613 else if (valptr
== NULL
)
624 else if (argv
[*skipptr
+2] != NULL
)
626 *valptr
= argv
[*skipptr
+2];
636 #ifdef DOUG_LEA_MALLOC
638 /* malloc can be invoked even before main (e.g. by the dynamic
639 linker), so the dumped malloc state must be restored as early as
640 possible using this special hook. */
643 malloc_initialize_hook (void)
646 extern char **environ
;
651 if (!malloc_using_checking
)
652 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
653 ignored if the heap to be restored was constructed without
654 malloc checking. Can't use unsetenv, since that calls malloc. */
658 for (p
= environ
; p
&& *p
; p
++)
659 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
668 malloc_set_state (malloc_state_ptr
);
669 #ifndef XMALLOC_OVERRUN_CHECK
670 free (malloc_state_ptr
);
675 if (my_heap_start
== 0)
676 my_heap_start
= sbrk (0);
677 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
681 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
683 #endif /* DOUG_LEA_MALLOC */
688 main (int argc
, char **argv
)
693 char stack_bottom_variable
;
694 int do_initial_setlocale
;
696 #ifdef HAVE_SETRLIMIT
711 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
712 /* This is used by the Cygwin build. */
713 setenv ("G_SLICE", "always-malloc", 1);
718 extern char my_endbss
[];
719 extern char *my_endbss_static
;
721 if (my_heap_start
== 0)
722 my_heap_start
= sbrk (0);
724 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
727 #ifdef RUN_TIME_REMAP
729 run_time_remap (argv
[0]);
732 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
735 unexec_init_emacs_zone ();
738 sort_args (argc
, argv
);
740 while (argv
[argc
]) argc
++;
742 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
744 const char *version
, *copyright
;
747 Lisp_Object tem
, tem2
;
748 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
749 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
752 fprintf (stderr
, "Invalid value of `emacs-version'\n");
757 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
762 version
= SSDATA (tem
);
763 copyright
= SSDATA (tem2
);
768 version
= emacs_version
;
769 copyright
= emacs_copyright
;
771 printf ("GNU Emacs %s\n", version
);
772 printf ("%s\n", copyright
);
773 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
774 printf ("You may redistribute copies of Emacs\n");
775 printf ("under the terms of the GNU General Public License.\n");
776 printf ("For more information about these matters, ");
777 printf ("see the file named COPYING.\n");
781 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
782 if (chdir (ch_to_dir
) == -1)
784 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
785 argv
[0], ch_to_dir
, strerror (errno
));
790 #ifdef HAVE_PERSONALITY_LINUX32
792 && (strcmp (argv
[argc
-1], "dump") == 0
793 || strcmp (argv
[argc
-1], "bootstrap") == 0)
794 && ! getenv ("EMACS_HEAP_EXEC"))
796 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
797 /* Set this so we only do this once. */
800 /* A flag to turn off address randomization which is introduced
801 in linux kernel shipped with fedora core 4 */
802 #define ADD_NO_RANDOMIZE 0x0040000
803 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
804 #undef ADD_NO_RANDOMIZE
806 execvp (argv
[0], argv
);
808 /* If the exec fails, try to dump anyway. */
811 #endif /* HAVE_PERSONALITY_LINUX32 */
813 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
814 /* Extend the stack space available.
815 Don't do that if dumping, since some systems (e.g. DJGPP)
816 might define a smaller stack limit at that time. */
819 && (!noninteractive
|| initialized
)
821 && !getrlimit (RLIMIT_STACK
, &rlim
))
824 extern size_t re_max_failures
;
825 /* Approximate the amount regex.c needs per unit of re_max_failures. */
826 int ratio
= 20 * sizeof (char *);
827 /* Then add 33% to cover the size of the smaller stacks that regex.c
828 successively allocates and discards, on its way to the maximum. */
830 /* Add in some extra to cover
831 what we're likely to use for other reasons. */
832 newlim
= re_max_failures
* ratio
+ 200000;
834 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
835 stack allocation routine for new process that the allocation
836 fails if stack limit is not on page boundary. So, round up the
837 new limit to page boundary. */
838 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
840 if (newlim
> rlim
.rlim_max
)
842 newlim
= rlim
.rlim_max
;
843 /* Don't let regex.c overflow the stack we have. */
844 re_max_failures
= (newlim
- 200000) / ratio
;
846 if (rlim
.rlim_cur
< newlim
)
847 rlim
.rlim_cur
= newlim
;
849 setrlimit (RLIMIT_STACK
, &rlim
);
851 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
853 /* Record (approximately) where the stack begins. */
854 stack_bottom
= &stack_bottom_variable
;
858 #ifndef SYSTEM_MALLOC
859 /* Arrange to get warning messages as memory fills up. */
860 memory_warnings (0, malloc_warning
);
862 /* Call malloc at least once, to run the initial __malloc_hook.
863 Also call realloc and free for consistency. */
864 free (realloc (malloc (4), 4));
867 /* Arrange to disable interrupt input inside malloc etc. */
868 uninterrupt_malloc ();
869 # endif /* not SYNC_INPUT */
870 #endif /* not SYSTEM_MALLOC */
872 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
873 main_thread
= pthread_self ();
874 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
876 #if defined (MSDOS) || defined (WINDOWSNT)
877 /* We do all file input/output as binary files. When we need to translate
878 newlines, we do that manually. */
880 #endif /* MSDOS || WINDOWSNT */
883 if (!isatty (fileno (stdin
)))
884 setmode (fileno (stdin
), O_BINARY
);
885 if (!isatty (fileno (stdout
)))
888 setmode (fileno (stdout
), O_BINARY
);
892 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
893 The build procedure uses this while dumping, to ensure that the
894 dumped Emacs does not have its system locale tables initialized,
895 as that might cause screwups when the dumped Emacs starts up. */
897 char *lc_all
= getenv ("LC_ALL");
898 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
901 /* Set locale now, so that initial error messages are localized properly.
902 fixup_locale must wait until later, since it builds strings. */
903 if (do_initial_setlocale
)
904 setlocale (LC_ALL
, "");
906 inhibit_window_system
= 0;
908 /* Handle the -t switch, which specifies filename to use as terminal. */
912 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
917 result
= emacs_open (term
, O_RDWR
, 0);
918 if (result
< 0 || dup (0) < 0)
920 char *errstring
= strerror (errno
);
921 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
926 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
929 fprintf (stderr
, "Using %s\n", term
);
930 #ifdef HAVE_WINDOW_SYSTEM
931 inhibit_window_system
= 1; /* -t => -nw */
938 /* Command line option --no-windows is deprecated and thus not mentioned
939 in the manual and usage informations. */
940 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
941 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
942 inhibit_window_system
= 1;
944 /* Handle the -batch switch, which means don't do interactive display. */
946 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
949 Vundo_outer_limit
= Qnil
;
951 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
953 noninteractive
= 1; /* Set batch mode. */
954 /* Convert --script to -scriptload, un-skip it, and sort again
955 so that it will be handled in proper sequence. */
956 /* FIXME broken for --script=FILE - is that supposed to work? */
957 argv
[skip_args
- 1] = (char *) "-scriptload";
959 sort_args (argc
, argv
);
962 /* Handle the --help option, which gives a usage message. */
963 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
965 printf (USAGE1
, argv
[0], USAGE2
);
971 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
972 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
977 /* Start as a daemon: fork a new child process which will run the
978 rest of the initialization code, then exit.
980 Detaching a daemon requires the following steps:
984 - close the tty file-descriptors
986 We only want to do the last 2 steps once the daemon is ready to
987 serve requests, i.e. after loading .emacs (initialization).
988 OTOH initialization may start subprocesses (e.g. ispell) and these
989 should be run from the proper process (the one that will end up
990 running as daemon) and with the proper "session id" in order for
991 them to keep working after detaching, so fork and setsid need to be
992 performed before initialization.
994 We want to avoid exiting before the server socket is ready, so
995 use a pipe for synchronization. The parent waits for the child
996 to close its end of the pipe (using `daemon-initialized')
998 if (pipe (daemon_pipe
) == -1)
1000 fprintf (stderr
, "Cannot pipe!\n");
1004 #ifndef NS_IMPL_COCOA
1006 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1007 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1008 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1011 #else /* NS_IMPL_COCOA */
1012 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1013 forked process: http://developer.apple.com/ReleaseNotes/
1014 CoreFoundation/CoreFoundation.html)
1015 We mark being in the exec'd process by a daemon name argument of
1016 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1017 NAME is the original daemon name, if any. */
1018 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1019 f
= fork (); /* in orig */
1021 f
= 0; /* in exec'd */
1022 #endif /* NS_IMPL_COCOA */
1028 /* Close unused writing end of the pipe. */
1029 close (daemon_pipe
[1]);
1031 /* Just wait for the child to close its end of the pipe. */
1034 retval
= read (daemon_pipe
[0], &buf
, 1);
1036 while (retval
== -1 && errno
== EINTR
);
1040 fprintf (stderr
, "Error reading status from child\n");
1043 else if (retval
== 0)
1045 fprintf (stderr
, "Error: server did not start correctly\n");
1049 close (daemon_pipe
[0]);
1054 fprintf (stderr
, "Cannot fork!\n");
1058 #ifdef NS_IMPL_COCOA
1060 /* In orig process, forked as child, OR in exec'd. */
1061 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1062 { /* In orig, child: now exec w/special daemon name. */
1065 if (dname_arg
&& strlen (dname_arg
) > 70)
1067 fprintf (stderr
, "daemon: child name too long\n");
1071 sprintf (fdStr
, "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1072 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1073 argv
[skip_args
] = fdStr
;
1075 execv (argv
[0], argv
);
1076 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1080 /* In exec'd: parse special dname into pipe and name info. */
1081 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1082 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1084 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1087 dname_arg2
[0] = '\0';
1088 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1090 dname_arg
= strlen (dname_arg2
) ? dname_arg2
: NULL
;
1092 #endif /* NS_IMPL_COCOA */
1095 daemon_name
= xstrdup (dname_arg
);
1096 /* Close unused reading end of the pipe. */
1097 close (daemon_pipe
[0]);
1098 /* Make sure that the used end of the pipe is closed on exec, so
1099 that it is not accessible to programs started from .emacs. */
1100 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1106 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1111 if (! noninteractive
)
1113 #if defined (USG5) && defined (INTERRUPT_INPUT)
1116 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1118 extern void malloc_enable_thread (void);
1120 malloc_enable_thread ();
1127 /* Don't catch SIGHUP if dumping. */
1134 sigblock (sigmask (SIGHUP
));
1135 /* In --batch mode, don't catch SIGHUP if already ignored.
1136 That makes nohup work. */
1137 if (! noninteractive
1138 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1139 signal (SIGHUP
, fatal_error_signal
);
1140 sigunblock (sigmask (SIGHUP
));
1145 ! noninteractive
|| initialized
1151 /* Don't catch these signals in batch mode if dumping.
1152 On some machines, this sets static data that would make
1153 signal fail to work right when the dumped Emacs is run. */
1154 signal (SIGQUIT
, fatal_error_signal
);
1155 signal (SIGILL
, fatal_error_signal
);
1156 signal (SIGTRAP
, fatal_error_signal
);
1158 add_user_signal (SIGUSR1
, "sigusr1");
1161 add_user_signal (SIGUSR2
, "sigusr2");
1164 signal (SIGABRT
, fatal_error_signal
);
1167 signal (SIGHWE
, fatal_error_signal
);
1170 signal (SIGPRE
, fatal_error_signal
);
1173 signal (SIGORE
, fatal_error_signal
);
1176 signal (SIGUME
, fatal_error_signal
);
1179 signal (SIGDLK
, fatal_error_signal
);
1182 signal (SIGCPULIM
, fatal_error_signal
);
1185 /* This is missing on some systems - OS/2, for example. */
1186 signal (SIGIOT
, fatal_error_signal
);
1189 signal (SIGEMT
, fatal_error_signal
);
1191 signal (SIGFPE
, fatal_error_signal
);
1193 signal (SIGBUS
, fatal_error_signal
);
1195 signal (SIGSEGV
, fatal_error_signal
);
1197 signal (SIGSYS
, fatal_error_signal
);
1199 /* May need special treatment on MS-Windows. See
1200 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1201 Please update the doc of kill-emacs, kill-emacs-hook, and
1202 NEWS if you change this.
1204 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1205 signal (SIGTERM
, fatal_error_signal
);
1207 signal (SIGXCPU
, fatal_error_signal
);
1210 signal (SIGXFSZ
, fatal_error_signal
);
1211 #endif /* SIGXFSZ */
1214 /* This just means available memory is getting low. */
1215 signal (SIGDANGER
, memory_warning_signal
);
1219 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1220 signal (SIGXCPU
, fatal_error_signal
);
1221 signal (SIGIOINT
, fatal_error_signal
);
1222 signal (SIGGRANT
, fatal_error_signal
);
1223 signal (SIGRETRACT
, fatal_error_signal
);
1224 signal (SIGSOUND
, fatal_error_signal
);
1225 signal (SIGMSG
, fatal_error_signal
);
1229 noninteractive1
= noninteractive
;
1231 /* Perform basic initializations (not merely interning symbols). */
1238 init_character_once ();
1239 init_charset_once ();
1240 init_coding_once ();
1241 init_syntax_once (); /* Create standard syntax table. */
1242 init_category_once (); /* Create standard category table. */
1243 /* Must be done before init_buffer. */
1244 init_casetab_once ();
1245 init_buffer_once (); /* Create buffer table and some buffers. */
1246 init_minibuf_once (); /* Create list of minibuffers. */
1247 /* Must precede init_window_once. */
1249 /* Call syms_of_xfaces before init_window_once because that
1250 function creates Vterminal_frame. Termcap frames now use
1251 faces, and the face implementation uses some symbols as
1254 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1255 be better to arrange things not to have this dependency. */
1257 /* Call syms_of_keyboard before init_window_once because
1258 keyboard sets up symbols that include some face names that
1259 the X support will want to use. This can happen when
1260 CANNOT_DUMP is defined. */
1261 syms_of_keyboard ();
1263 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1266 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1268 /* Before syms_of_coding because it initializes Qcharsetp. */
1270 /* Before init_window_once, because it sets up the
1271 Vcoding_system_hash_table. */
1272 syms_of_coding (); /* This should be after syms_of_fileio. */
1274 init_window_once (); /* Init the window system. */
1275 #ifdef HAVE_WINDOW_SYSTEM
1276 init_fringe_once (); /* Swap bitmaps if necessary. */
1277 #endif /* HAVE_WINDOW_SYSTEM */
1282 if (do_initial_setlocale
)
1285 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1286 Vsystem_time_locale
= Vprevious_system_time_locale
;
1291 #ifdef CLASH_DETECTION
1295 running_asynch_code
= 0;
1298 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1301 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1304 ns_alloc_autorelease_pool();
1305 if (!noninteractive
)
1307 #ifdef NS_IMPL_COCOA
1308 if (skip_args
< argc
)
1310 /* FIXME: Do the right thing if getenv returns NULL, or if
1312 if (!strncmp(argv
[skip_args
], "-psn", 4))
1315 chdir (getenv ("HOME"));
1317 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1320 chdir (getenv ("HOME"));
1325 #endif /* HAVE_NS */
1327 #ifdef HAVE_X_WINDOWS
1328 /* Stupid kludge to catch command-line display spec. We can't
1329 handle this argument entirely in window system dependent code
1330 because we don't even know which window system dependent code
1331 to run until we've recognized this argument. */
1333 char *displayname
= 0;
1334 int count_before
= skip_args
;
1336 /* Skip any number of -d options, but only use the last one. */
1339 int count_before_this
= skip_args
;
1341 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1343 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1348 count_before
= count_before_this
;
1351 /* If we have the form --display=NAME,
1352 convert it into -d name.
1353 This requires inserting a new element into argv. */
1354 if (displayname
!= 0 && skip_args
- count_before
== 1)
1356 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1359 for (j
= 0; j
< count_before
+ 1; j
++)
1361 new[count_before
+ 1] = (char *) "-d";
1362 new[count_before
+ 2] = displayname
;
1363 for (j
= count_before
+ 2; j
<argc
; j
++)
1364 new[j
+ 1] = argv
[j
];
1368 /* Change --display to -d, when its arg is separate. */
1369 else if (displayname
!= 0 && skip_args
> count_before
1370 && argv
[count_before
+ 1][1] == '-')
1371 argv
[count_before
+ 1] = (char *) "-d";
1375 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1376 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1380 /* Don't actually discard this arg. */
1381 skip_args
= count_before
;
1383 #else /* !HAVE_X_WINDOWS */
1386 int count_before
= skip_args
;
1388 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1389 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1392 skip_args
= count_before
;
1396 /* argmatch must not be used after here,
1397 except when bulding temacs
1398 because the -d argument has not been skipped in skip_args. */
1401 /* Call early 'cause init_environment needs it. */
1403 /* Set defaults for several environment variables. */
1405 init_environment (argc
, argv
, skip_args
);
1412 /* Initialize environment from registry settings. */
1413 init_environment (argv
);
1414 init_ntproc (); /* must precede init_editfns. */
1424 /* Initialize and GC-protect Vinitial_environment and
1425 Vprocess_environment before set_initial_environment fills them
1428 syms_of_callproc ();
1429 /* egetenv is a pretty low-level facility, which may get called in
1430 many circumstances; it seems flimsy to put off initializing it
1431 until calling init_callproc. Do not do it when dumping. */
1432 if (initialized
|| ((strcmp (argv
[argc
-1], "dump") != 0
1433 && strcmp (argv
[argc
-1], "bootstrap") != 0)))
1434 set_initial_environment ();
1436 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1437 if this is not done. Do it after set_global_environment so that we
1438 don't pollute Vglobal_environment. */
1439 /* Setting LANG here will defeat the startup locale processing... */
1444 init_buffer (); /* Init default directory of main buffer. */
1446 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1447 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1451 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1452 Lisp_Object old_log_max
;
1453 old_log_max
= Vmessage_log_max
;
1454 XSETFASTINT (Vmessage_log_max
, 0);
1455 message_dolog ("", 0, 1, 0);
1456 Vmessage_log_max
= old_log_max
;
1459 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1462 /* Intern the names of all standard functions and variables;
1463 define standard keys. */
1467 /* The basic levels of Lisp must come first. Note that
1468 syms_of_data and some others have already been called. */
1474 syms_of_floatfns ();
1477 syms_of_bytecode ();
1479 syms_of_casefiddle ();
1481 syms_of_category ();
1483 syms_of_character ();
1490 syms_of_filelock ();
1493 /* syms_of_keymap (); */
1501 syms_of_terminal ();
1507 syms_of_textprop ();
1508 syms_of_composite ();
1511 #endif /* WINDOWSNT */
1515 #ifdef HAVE_WINDOW_SYSTEM
1518 #endif /* HAVE_WINDOW_SYSTEM */
1519 #ifdef HAVE_X_WINDOWS
1524 syms_of_xsettings ();
1531 #endif /* HAVE_X_WINDOWS */
1542 syms_of_w32select ();
1545 #endif /* HAVE_NTGUI */
1551 syms_of_win16select();
1558 syms_of_nsselect ();
1560 #endif /* HAVE_NS */
1567 syms_of_dbusbind ();
1568 #endif /* HAVE_DBUS */
1572 #endif /* WINDOWSNT */
1574 keys_of_casefiddle ();
1577 keys_of_keyboard ();
1583 /* Initialization that must be done even if the global variable
1584 initialized is non zero. */
1586 globals_of_w32fns ();
1587 globals_of_w32menu ();
1588 globals_of_w32select ();
1589 #endif /* HAVE_NTGUI */
1594 init_editfns (); /* init_process uses Voperating_system_release. */
1595 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1596 init_keyboard (); /* This too must precede init_sys_modes. */
1597 if (!noninteractive
)
1598 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1601 #ifdef HAVE_WINDOW_SYSTEM
1604 #endif /* HAVE_WINDOW_SYSTEM */
1616 /* Handle -l loadup, args passed by Makefile. */
1617 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1618 Vtop_level
= Fcons (intern_c_string ("load"),
1619 Fcons (build_string (file
), Qnil
));
1620 /* Unless next switch is -nl, load "loadup.el" first thing. */
1622 Vtop_level
= Fcons (intern_c_string ("load"),
1623 Fcons (build_string ("loadup.el"), Qnil
));
1630 /* If the execution TZ happens to be the same as the dump TZ,
1631 change it to some other value and then change it back,
1632 to force the underlying implementation to reload the TZ info.
1633 This is needed on implementations that load TZ info from files,
1634 since the TZ file contents may differ between dump and execution. */
1635 char *tz
= getenv ("TZ");
1636 if (tz
&& !strcmp (tz
, dump_tz
))
1646 /* Set up for profiling. This is known to work on FreeBSD,
1647 GNU/Linux and MinGW. It might work on some other systems too.
1648 Give it a try and tell us if it works on your system. To compile
1649 for profiling, use the configure option --enable-profiling. */
1650 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1654 extern void _mcleanup ();
1656 extern unsigned char etext
asm ("etext");
1660 #ifdef HAVE___EXECUTABLE_START
1661 /* This symbol is defined by GNU ld to the start of the text
1663 extern char __executable_start
[];
1665 extern void safe_bcopy ();
1669 #ifdef HAVE___EXECUTABLE_START
1670 monstartup (__executable_start
, &etext
);
1672 /* This uses safe_bcopy because that function comes first in the
1673 Emacs executable. It might be better to use something that
1674 gives the start of the text segment, but start_of_text is not
1675 defined on all systems now. */
1676 /* FIXME: Does not work on architectures with function
1678 monstartup (safe_bcopy
, &etext
);
1688 #ifdef LOCALTIME_CACHE
1689 /* Some versions of localtime have a bug. They cache the value of the time
1690 zone rather than looking it up every time. Since localtime() is
1691 called to bolt the undumping time into the undumped emacs, this
1692 results in localtime ignoring the TZ environment variable.
1693 This flushes the new TZ value into localtime. */
1695 #endif /* defined (LOCALTIME_CACHE) */
1697 /* Enter editor command loop. This never returns. */
1703 /* Sort the args so we can find the most important ones
1704 at the beginning of argv. */
1706 /* First, here's a table of all the standard options. */
1708 struct standard_args
1711 const char *longname
;
1716 static const struct standard_args standard_args
[] =
1718 { "-version", "--version", 150, 0 },
1719 { "-chdir", "--chdir", 130, 1 },
1720 { "-t", "--terminal", 120, 1 },
1721 { "-nw", "--no-window-system", 110, 0 },
1722 { "-nw", "--no-windows", 110, 0 },
1723 { "-batch", "--batch", 100, 0 },
1724 { "-script", "--script", 100, 1 },
1725 { "-daemon", "--daemon", 99, 0 },
1726 { "-help", "--help", 90, 0 },
1727 { "-nl", "--no-loadup", 70, 0 },
1728 { "-nsl", "--no-site-lisp", 65, 0 },
1729 /* -d must come last before the options handled in startup.el. */
1730 { "-d", "--display", 60, 1 },
1731 { "-display", 0, 60, 1 },
1732 /* Now for the options handled in `command-line' (startup.el). */
1733 /* (Note that to imply -nsl, -Q is partially handled here.) */
1734 { "-Q", "--quick", 55, 0 },
1735 { "-quick", 0, 55, 0 },
1736 { "-q", "--no-init-file", 50, 0 },
1737 { "-no-init-file", 0, 50, 0 },
1738 { "-no-site-file", "--no-site-file", 40, 0 },
1739 { "-u", "--user", 30, 1 },
1740 { "-user", 0, 30, 1 },
1741 { "-debug-init", "--debug-init", 20, 0 },
1742 { "-iconic", "--iconic", 15, 0 },
1743 { "-D", "--basic-display", 12, 0},
1744 { "-basic-display", 0, 12, 0},
1745 { "-nbc", "--no-blinking-cursor", 12, 0 },
1746 /* Now for the options handled in `command-line-1' (startup.el). */
1747 { "-nbi", "--no-bitmap-icon", 10, 0 },
1748 { "-bg", "--background-color", 10, 1 },
1749 { "-background", 0, 10, 1 },
1750 { "-fg", "--foreground-color", 10, 1 },
1751 { "-foreground", 0, 10, 1 },
1752 { "-bd", "--border-color", 10, 1 },
1753 { "-bw", "--border-width", 10, 1 },
1754 { "-ib", "--internal-border", 10, 1 },
1755 { "-ms", "--mouse-color", 10, 1 },
1756 { "-cr", "--cursor-color", 10, 1 },
1757 { "-fn", "--font", 10, 1 },
1758 { "-font", 0, 10, 1 },
1759 { "-fs", "--fullscreen", 10, 0 },
1760 { "-fw", "--fullwidth", 10, 0 },
1761 { "-fh", "--fullheight", 10, 0 },
1762 { "-mm", "--maximized", 10, 0 },
1763 { "-g", "--geometry", 10, 1 },
1764 { "-geometry", 0, 10, 1 },
1765 { "-T", "--title", 10, 1 },
1766 { "-title", 0, 10, 1 },
1767 { "-name", "--name", 10, 1 },
1768 { "-xrm", "--xrm", 10, 1 },
1769 { "-parent-id", "--parent-id", 10, 1 },
1770 { "-r", "--reverse-video", 5, 0 },
1772 { "-reverse", 0, 5, 0 },
1773 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1774 { "-vb", "--vertical-scroll-bars", 5, 0 },
1775 { "-color", "--color", 5, 0},
1776 { "-no-splash", "--no-splash", 3, 0 },
1777 { "-no-desktop", "--no-desktop", 3, 0 },
1779 { "-NSAutoLaunch", 0, 5, 1 },
1780 { "-NXAutoLaunch", 0, 5, 1 },
1781 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1782 { "-_NSMachLaunch", 0, 85, 1 },
1783 { "-MachLaunch", 0, 85, 1 },
1784 { "-macosx", 0, 85, 0 },
1785 { "-NSHost", 0, 85, 1 },
1787 /* These have the same priority as ordinary file name args,
1788 so they are not reordered with respect to those. */
1789 { "-L", "--directory", 0, 1 },
1790 { "-directory", 0, 0, 1 },
1791 { "-l", "--load", 0, 1 },
1792 { "-load", 0, 0, 1 },
1793 /* This has no longname, because using --scriptload confuses sort_args,
1794 because then the --script long option seems to match twice; ie
1795 you can't have a long option which is a prefix of another long
1796 option. In any case, this is entirely an internal option. */
1797 { "-scriptload", NULL
, 0, 1 },
1798 { "-f", "--funcall", 0, 1 },
1799 { "-funcall", 0, 0, 1 },
1800 { "-eval", "--eval", 0, 1 },
1801 { "-execute", "--execute", 0, 1 },
1802 { "-find-file", "--find-file", 0, 1 },
1803 { "-visit", "--visit", 0, 1 },
1804 { "-file", "--file", 0, 1 },
1805 { "-insert", "--insert", 0, 1 },
1807 { "-NXOpen", 0, 0, 1 },
1808 { "-NXOpenTemp", 0, 0, 1 },
1809 { "-NSOpen", 0, 0, 1 },
1810 { "-NSOpenTemp", 0, 0, 1 },
1811 { "-GSFilePath", 0, 0, 1 },
1813 /* This should be processed after ordinary file name args and the like. */
1814 { "-kill", "--kill", -10, 0 },
1817 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1818 so that the highest priority ones come first.
1819 Do not change the order of elements of equal priority.
1820 If an option takes an argument, keep it and its argument together.
1822 If an option that takes no argument appears more
1823 than once, eliminate all but one copy of it. */
1826 sort_args (int argc
, char **argv
)
1828 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1829 /* For each element of argv,
1830 the corresponding element of options is:
1831 0 for an option that takes no arguments,
1832 1 for an option that takes one argument, etc.
1833 -1 for an ordinary non-option argument. */
1834 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1835 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1837 int incoming_used
= 1;
1841 /* Categorize all the options,
1842 and figure out which argv elts are option arguments. */
1843 for (from
= 1; from
< argc
; from
++)
1847 if (argv
[from
][0] == '-')
1852 /* If we have found "--", don't consider
1853 any more arguments as options. */
1854 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1856 /* Leave the "--", and everything following it, at the end. */
1857 for (; from
< argc
; from
++)
1859 priority
[from
] = -100;
1865 /* Look for a match with a known old-fashioned option. */
1866 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1867 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1869 options
[from
] = standard_args
[i
].nargs
;
1870 priority
[from
] = standard_args
[i
].priority
;
1871 if (from
+ standard_args
[i
].nargs
>= argc
)
1872 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1873 from
+= standard_args
[i
].nargs
;
1877 /* Look for a match with a known long option.
1878 MATCH is -1 if no match so far, -2 if two or more matches so far,
1879 >= 0 (the table index of the match) if just one match so far. */
1880 if (argv
[from
][1] == '-')
1883 thislen
= strlen (argv
[from
]);
1884 equals
= strchr (argv
[from
], '=');
1886 thislen
= equals
- argv
[from
];
1889 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1890 if (standard_args
[i
].longname
1891 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1900 /* If we found exactly one match, use that. */
1903 options
[from
] = standard_args
[match
].nargs
;
1904 priority
[from
] = standard_args
[match
].priority
;
1905 /* If --OPTION=VALUE syntax is used,
1906 this option uses just one argv element. */
1909 if (from
+ options
[from
] >= argc
)
1910 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1911 from
+= options
[from
];
1913 /* FIXME When match < 0, shouldn't there be some error,
1914 or at least indication to the user that there was a
1921 /* Copy the arguments, in order of decreasing priority, to NEW. */
1923 while (incoming_used
< argc
)
1926 int best_priority
= -9999;
1928 /* Find the highest priority remaining option.
1929 If several have equal priority, take the first of them. */
1930 for (from
= 1; from
< argc
; from
++)
1932 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1934 best_priority
= priority
[from
];
1937 /* Skip option arguments--they are tied to the options. */
1938 if (options
[from
] > 0)
1939 from
+= options
[from
];
1945 /* Copy the highest priority remaining option, with its args, to NEW.
1946 Unless it is a duplicate of the previous one. */
1947 if (! (options
[best
] == 0
1948 && ! strcmp (new[to
- 1], argv
[best
])))
1950 new[to
++] = argv
[best
];
1951 for (i
= 0; i
< options
[best
]; i
++)
1952 new[to
++] = argv
[best
+ i
+ 1];
1955 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1957 /* Clear out this option in ARGV. */
1959 for (i
= 0; i
< options
[best
]; i
++)
1960 argv
[best
+ i
+ 1] = 0;
1963 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1967 memcpy (argv
, new, sizeof (char *) * argc
);
1974 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1975 doc
: /* Exit the Emacs job and kill it.
1976 If ARG is an integer, return ARG as the exit program code.
1977 If ARG is a string, stuff it as keyboard input.
1979 This function is called upon receipt of the signals SIGTERM
1980 or SIGHUP, and upon SIGINT in batch mode.
1982 The value of `kill-emacs-hook', if not void,
1983 is a list of functions (of no args),
1984 all of which are called before Emacs is actually killed. */)
1987 struct gcpro gcpro1
;
1995 hook
= intern ("kill-emacs-hook");
1996 Frun_hooks (1, &hook
);
2000 #ifdef HAVE_X_WINDOWS
2001 /* Transfer any clipboards we own to the clipboard manager. */
2002 x_clipboard_manager_save_all ();
2005 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2007 /* If we have an auto-save list file,
2008 kill it because we are exiting Emacs deliberately (not crashing).
2009 Do it after shut_down_emacs, which does an auto-save. */
2010 if (STRINGP (Vauto_save_list_file_name
))
2011 unlink (SSDATA (Vauto_save_list_file_name
));
2013 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
2017 /* Perform an orderly shutdown of Emacs. Autosave any modified
2018 buffers, kill any child processes, clean up the terminal modes (if
2019 we're in the foreground), and other stuff like that. Don't perform
2020 any redisplay; this may be called when Emacs is shutting down in
2021 the background, or after its X connection has died.
2023 If SIG is a signal number, print a message for it.
2025 This is called by fatal signal handlers, X protocol error handlers,
2029 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2031 /* Prevent running of hooks from now on. */
2034 /* Don't update display from now on. */
2035 Vinhibit_redisplay
= Qt
;
2037 /* If we are controlling the terminal, reset terminal modes. */
2040 int pgrp
= EMACS_GETPGRP (0);
2041 int tpgrp
= tcgetpgrp (0);
2042 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2044 reset_all_sys_modes ();
2045 if (sig
&& sig
!= SIGTERM
)
2046 fprintf (stderr
, "Fatal error (%d)", sig
);
2051 reset_all_sys_modes ();
2054 stuff_buffered_input (stuff
);
2056 inhibit_sentinels
= 1;
2057 kill_buffer_processes (Qnil
);
2058 Fdo_auto_save (Qt
, Qnil
);
2060 #ifdef CLASH_DETECTION
2061 unlock_all_files ();
2064 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2065 #ifdef HAVE_X_WINDOWS
2066 /* It's not safe to call intern here. Maybe we are crashing. */
2067 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2068 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2069 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2071 Fx_close_current_connection ();
2072 #endif /* HAVE_X_WINDOWS */
2076 /* There is a tendency for a SIGIO signal to arrive within exit,
2077 and cause a SIGHUP because the input descriptor is already closed. */
2079 signal (SIGIO
, SIG_IGN
);
2086 /* Do this only if terminating normally, we want glyph matrices
2087 etc. in a core dump. */
2088 if (sig
== 0 || sig
== SIGTERM
)
2090 check_glyph_memory ();
2091 check_message_stack ();
2099 ns_term_shutdown (sig
);
2109 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2110 doc
: /* Dump current state of Emacs into executable file FILENAME.
2111 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2112 This is used in the file `loadup.el' when building Emacs.
2114 You must run Emacs in batch mode in order to dump it. */)
2115 (Lisp_Object filename
, Lisp_Object symfile
)
2119 int count
= SPECPDL_INDEX ();
2123 if (! noninteractive
)
2124 error ("Dumping Emacs works only in batch mode");
2128 /* Warn if the gap between BSS end and heap start is larger than this. */
2129 # define MAX_HEAP_BSS_DIFF (1024*1024)
2131 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2133 fprintf (stderr
, "**************************************************\n");
2134 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2135 fprintf (stderr
, "heap (%lu bytes). This usually means that exec-shield\n",
2137 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2138 fprintf (stderr
, "fail because of this. See the section about\n");
2139 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2140 fprintf (stderr
, "**************************************************\n");
2142 #endif /* GNU_LINUX */
2144 /* Bind `command-line-processed' to nil before dumping,
2145 so that the dumped Emacs will process its command line
2146 and set up to work with X windows if appropriate. */
2147 symbol
= intern ("command-line-processed");
2148 specbind (symbol
, Qnil
);
2150 CHECK_STRING (filename
);
2151 filename
= Fexpand_file_name (filename
, Qnil
);
2152 if (!NILP (symfile
))
2154 CHECK_STRING (symfile
);
2155 if (SCHARS (symfile
))
2156 symfile
= Fexpand_file_name (symfile
, Qnil
);
2160 Vpurify_flag
= Qnil
;
2163 set_time_zone_rule (dump_tz
);
2164 #ifndef LOCALTIME_CACHE
2165 /* Force a tz reload, since set_time_zone_rule doesn't. */
2171 /* Tell malloc where start of impure now is. */
2172 /* Also arrange for warnings when nearly out of space. */
2173 #ifndef SYSTEM_MALLOC
2175 /* On Windows, this was done before dumping, and that once suffices.
2176 Meanwhile, my_edata is not valid on Windows. */
2178 extern char my_edata
[];
2179 memory_warnings (my_edata
, malloc_warning
);
2181 #endif /* not WINDOWSNT */
2182 #if defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2183 /* Pthread may call malloc before main, and then we will get an endless
2184 loop, because pthread_self (see alloc.c) calls malloc the first time
2185 it is called on some systems. */
2186 reset_malloc_hooks ();
2188 #endif /* not SYSTEM_MALLOC */
2189 #ifdef DOUG_LEA_MALLOC
2190 malloc_state_ptr
= malloc_get_state ();
2193 #ifdef USE_MMAP_FOR_BUFFERS
2196 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2197 #ifdef USE_MMAP_FOR_BUFFERS
2200 #ifdef DOUG_LEA_MALLOC
2201 free (malloc_state_ptr
);
2206 return unbind_to (count
, Qnil
);
2209 #endif /* not CANNOT_DUMP */
2212 /* Recover from setlocale (LC_ALL, ""). */
2216 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2217 so that numbers are read and printed properly for Emacs Lisp. */
2218 setlocale (LC_NUMERIC
, "C");
2221 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2224 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2226 if (! EQ (*plocale
, desired_locale
))
2228 *plocale
= desired_locale
;
2229 setlocale (category
, (STRINGP (desired_locale
)
2230 ? SSDATA (desired_locale
)
2235 /* Set system time locale to match Vsystem_time_locale, if possible. */
2237 synchronize_system_time_locale (void)
2239 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2240 Vsystem_time_locale
);
2243 /* Set system messages locale to match Vsystem_messages_locale, if
2246 synchronize_system_messages_locale (void)
2249 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2250 Vsystem_messages_locale
);
2253 #endif /* HAVE_SETLOCALE */
2260 decode_env_path (const char *evarname
, const char *defalt
)
2262 const char *path
, *p
;
2263 Lisp_Object lpath
, element
, tem
;
2265 /* It's okay to use getenv here, because this function is only used
2266 to initialize variables when Emacs starts up, and isn't called
2269 path
= getenv (evarname
);
2275 /* Ensure values from the environment use the proper directory separator. */
2278 char *path_copy
= alloca (strlen (path
) + 1);
2279 strcpy (path_copy
, path
);
2280 dostounix_filename (path_copy
);
2287 p
= strchr (path
, SEPCHAR
);
2289 p
= path
+ strlen (path
);
2290 element
= (p
- path
? make_string (path
, p
- path
)
2291 : build_string ("."));
2293 /* Add /: to the front of the name
2294 if it would otherwise be treated as magic. */
2295 tem
= Ffind_file_name_handler (element
, Qt
);
2297 /* However, if the handler says "I'm safe",
2298 don't bother adding /:. */
2302 prop
= Fget (tem
, intern ("safe-magic"));
2308 element
= concat2 (build_string ("/:"), element
);
2310 lpath
= Fcons (element
, lpath
);
2316 return Fnreverse (lpath
);
2319 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2320 doc
: /* Return non-nil if the current emacs process is a daemon.
2321 If the daemon was given a name argument, return that name. */)
2326 return build_string (daemon_name
);
2333 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2334 doc
: /* Mark the Emacs daemon as being initialized.
2335 This finishes the daemonization process by doing the other half of detaching
2336 from the parent process and its tty file descriptors. */)
2343 error ("This function can only be called if emacs is run as a daemon");
2345 if (daemon_pipe
[1] < 0)
2346 error ("The daemon has already been initialized");
2348 if (NILP (Vafter_init_time
))
2349 error ("This function can only be called after loading the init files");
2351 /* Get rid of stdin, stdout and stderr. */
2352 nfd
= open ("/dev/null", O_RDWR
);
2354 err
|= dup2 (nfd
, 0) < 0;
2355 err
|= dup2 (nfd
, 1) < 0;
2356 err
|= dup2 (nfd
, 2) < 0;
2357 err
|= close (nfd
) != 0;
2359 /* Closing the pipe will notify the parent that it can exit.
2360 FIXME: In case some other process inherited the pipe, closing it here
2361 won't notify the parent because it's still open elsewhere, so we
2362 additionally send a byte, just to make sure the parent really exits.
2363 Instead, we should probably close the pipe in start-process and
2364 call-process to make sure the pipe is never inherited by
2366 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2367 err
|= close (daemon_pipe
[1]) != 0;
2368 /* Set it to an invalid value so we know we've already run this function. */
2369 daemon_pipe
[1] = -1;
2372 error ("I/O error during daemon initialization");
2377 syms_of_emacs (void)
2379 Qfile_name_handler_alist
= intern_c_string ("file-name-handler-alist");
2380 staticpro (&Qfile_name_handler_alist
);
2381 Qrisky_local_variable
= intern_c_string ("risky-local-variable");
2382 staticpro (&Qrisky_local_variable
);
2385 defsubr (&Sdump_emacs
);
2388 defsubr (&Skill_emacs
);
2390 defsubr (&Sinvocation_name
);
2391 defsubr (&Sinvocation_directory
);
2392 defsubr (&Sdaemonp
);
2393 defsubr (&Sdaemon_initialized
);
2395 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2396 doc
: /* Args passed by shell to Emacs, as a list of strings.
2397 Many arguments are deleted from the list as they are processed. */);
2399 DEFVAR_LISP ("system-type", Vsystem_type
,
2400 doc
: /* The value is a symbol indicating the type of operating system you are using.
2402 `gnu' compiled for a GNU Hurd system.
2403 `gnu/linux' compiled for a GNU/Linux system.
2404 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2405 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2406 `ms-dos' compiled as an MS-DOS application.
2407 `windows-nt' compiled as a native W32 application.
2408 `cygwin' compiled using the Cygwin library.
2409 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2410 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2411 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2412 /* The above values are from SYSTEM_TYPE in include files under src/s. */
2414 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2415 doc
: /* Value is string indicating configuration Emacs was built for.
2416 On MS-Windows, the value reflects the OS flavor and version on which
2417 Emacs is running. */);
2418 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2420 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2421 doc
: /* String containing the configuration options Emacs was built with. */);
2422 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2424 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2425 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2427 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2428 doc
: /* Hook to be run when `kill-emacs' is called.
2429 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2430 in other similar situations), functions placed on this hook should not
2431 expect to be able to interact with the user. To ask for confirmation,
2432 see `kill-emacs-query-functions' instead.
2434 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2435 `noninteractive' was non-nil. */);
2436 Vkill_emacs_hook
= Qnil
;
2438 DEFVAR_LISP ("path-separator", Vpath_separator
,
2439 doc
: /* String containing the character that separates directories in
2440 search paths, such as PATH and other similar environment variables. */);
2443 Vpath_separator
= make_string (&c
, 1);
2446 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2447 doc
: /* The program name that was used to run Emacs.
2448 Any directory names are omitted. */);
2450 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2451 doc
: /* The directory in which the Emacs executable was found, to run it.
2452 The value is nil if that directory's name is not known. */);
2454 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2455 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2456 This is non-nil when we can't find those directories in their standard
2457 installed locations, but we can find them near where the Emacs executable
2459 Vinstallation_directory
= Qnil
;
2461 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2462 doc
: /* System locale for messages. */);
2463 Vsystem_messages_locale
= Qnil
;
2465 DEFVAR_LISP ("previous-system-messages-locale",
2466 Vprevious_system_messages_locale
,
2467 doc
: /* Most recently used system locale for messages. */);
2468 Vprevious_system_messages_locale
= Qnil
;
2470 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2471 doc
: /* System locale for time. */);
2472 Vsystem_time_locale
= Qnil
;
2474 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2475 doc
: /* Most recently used system locale for time. */);
2476 Vprevious_system_time_locale
= Qnil
;
2478 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2479 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2480 Vbefore_init_time
= Qnil
;
2482 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2483 doc
: /* Value of `current-time' after loading the init files.
2484 This is nil during initialization. */);
2485 Vafter_init_time
= Qnil
;
2487 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2488 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2489 inhibit_x_resources
= 0;
2491 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2492 doc
: /* Short copyright string for this version of Emacs. */);
2493 Vemacs_copyright
= build_string (emacs_copyright
);
2495 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2496 doc
: /* Version numbers of this version of Emacs. */);
2497 Vemacs_version
= build_string (emacs_version
);
2499 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2500 doc
: /* Alist of dynamic libraries vs external files implementing them.
2501 Each element is a list (LIBRARY FILE...), where the car is a symbol
2502 representing a supported external library, and the rest are strings giving
2503 alternate filenames for that library.
2505 Emacs tries to load the library from the files in the order they appear on
2506 the list; if none is loaded, the running session of Emacs won't have access
2509 Note that image types `pbm' and `xbm' do not need entries in this variable
2510 because they do not depend on external libraries and are always available.
2512 Also note that this is not a generic facility for accessing external
2513 libraries; only those already known by Emacs will be loaded. */);
2514 Vdynamic_library_alist
= Qnil
;
2515 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2517 /* Make sure IS_DAEMON starts up as false. */