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"
55 #include "blockinput.h"
56 #include "syssignal.h"
59 #include "termhooks.h"
81 #include <sys/resource.h>
84 #ifdef HAVE_PERSONALITY_LINUX32
85 #include <sys/personality.h>
89 #include <libxml/parser.h>
99 #define setpgrp setpgid
103 static const char emacs_version
[] = VERSION
;
104 static const char emacs_copyright
[] = "Copyright (C) 2011 Free Software Foundation, Inc.";
106 /* Make these values available in GDB, which doesn't see macros. */
109 int gdb_use_lsb EXTERNALLY_VISIBLE
= 1;
111 int gdb_use_lsb EXTERNALLY_VISIBLE
= 0;
113 #ifndef USE_LISP_UNION_TYPE
114 int gdb_use_union EXTERNALLY_VISIBLE
= 0;
116 int gdb_use_union EXTERNALLY_VISIBLE
= 1;
118 EMACS_INT gdb_valbits EXTERNALLY_VISIBLE
= VALBITS
;
119 EMACS_INT gdb_gctypebits EXTERNALLY_VISIBLE
= GCTYPEBITS
;
120 #if defined (DATA_SEG_BITS) && ! defined (USE_LSB_TAG)
121 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= DATA_SEG_BITS
;
123 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= 0;
125 EMACS_INT PVEC_FLAG EXTERNALLY_VISIBLE
= PSEUDOVECTOR_FLAG
;
126 EMACS_INT gdb_array_mark_flag EXTERNALLY_VISIBLE
= ARRAY_MARK_FLAG
;
127 /* GDB might say "No enum type named pvec_type" if we don't have at
128 least one symbol with that type, and then xbacktrace could fail. */
129 enum pvec_type gdb_pvec_type EXTERNALLY_VISIBLE
= PVEC_TYPE_MASK
;
131 /* Empty lisp strings. To avoid having to build any others. */
132 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
134 /* Set nonzero after Emacs has started up the first time.
135 Prevents reinitialization of the Lisp world and keymaps
136 on subsequent starts. */
140 extern void unexec_init_emacs_zone (void);
143 #ifdef DOUG_LEA_MALLOC
144 /* Preserves a pointer to the memory allocated that copies that
145 static data inside glibc's malloc. */
146 static void *malloc_state_ptr
;
147 /* From glibc, a routine that returns a copy of the malloc internal state. */
148 extern void *malloc_get_state (void);
149 /* From glibc, a routine that overwrites the malloc internal state. */
150 extern int malloc_set_state (void*);
151 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
152 dumping. Used to work around a bug in glibc's malloc. */
153 static int malloc_using_checking
;
156 Lisp_Object Qfile_name_handler_alist
;
158 Lisp_Object Qrisky_local_variable
;
160 /* If non-zero, Emacs should not attempt to use a window-specific code,
161 but instead should use the virtual terminal under which it was started. */
162 int inhibit_window_system
;
164 /* If non-zero, a filter or a sentinel is running. Tested to save the match
165 data on the first attempt to change it inside asynchronous code. */
166 int running_asynch_code
;
168 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
169 /* If non-zero, -d was specified, meaning we're using some window system. */
173 /* An address near the bottom of the stack.
174 Tells GC how to save a copy of the stack. */
177 /* The address where the heap starts (from the first sbrk (0) call). */
178 static void *my_heap_start
;
181 /* The gap between BSS end and heap start as far as we can tell. */
182 static uprintmax_t heap_bss_diff
;
185 /* Nonzero means running Emacs without interactive terminal. */
188 /* Nonzero means remove site-lisp directories from load-path. */
191 /* Name for the server started by the daemon.*/
192 static char *daemon_name
;
194 /* Pipe used to send exit notification to the daemon parent at
198 /* Save argv and argc. */
202 static void sort_args (int argc
, char **argv
);
203 static void syms_of_emacs (void);
205 /* MSVC needs each string be shorter than 2048 bytes, so the usage
206 strings below are split to not overflow this limit. */
208 Usage: %s [OPTION-OR-FILENAME]...\n\
210 Run Emacs, the extensible, customizable, self-documenting real-time\n\
211 display editor. The recommended way to start Emacs for normal editing\n\
212 is with no options at all.\n\
214 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
215 read the main documentation for these command-line arguments.\n\
217 Initialization options:\n\
219 --batch do not do interactive display; implies -q\n\
220 --chdir DIR change to directory DIR\n\
221 --daemon start a server in the background\n\
222 --debug-init enable Emacs Lisp debugger for init file\n\
223 --display, -d DISPLAY use X server DISPLAY\n\
224 --no-desktop do not load a saved desktop\n\
225 --no-init-file, -q load neither ~/.emacs nor default.el\n\
226 --no-shared-memory, -nl do not use shared memory\n\
227 --no-site-file do not load site-start.el\n\
228 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
229 --no-splash do not display a splash screen on startup\n\
230 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
231 --quick, -Q equivalent to:\n\
232 -q --no-site-file --no-site-lisp --no-splash\n\
233 --script FILE run FILE as an Emacs Lisp script\n\
234 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
235 --user, -u USER load ~USER/.emacs instead of your own\n\
241 FILE visit FILE using find-file\n\
242 +LINE go to line LINE in next FILE\n\
243 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
244 --directory, -L DIR add DIR to variable load-path\n\
245 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
246 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
247 --file FILE visit FILE using find-file\n\
248 --find-file FILE visit FILE using find-file\n\
249 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
250 --insert FILE insert contents of FILE into current buffer\n\
251 --kill exit without asking for confirmation\n\
252 --load, -l FILE load Emacs Lisp FILE using the load function\n\
253 --visit FILE visit FILE using find-file\n\
259 --background-color, -bg COLOR window background color\n\
260 --basic-display, -D disable many display features;\n\
261 used for debugging Emacs\n\
262 --border-color, -bd COLOR main border color\n\
263 --border-width, -bw WIDTH width of main border\n\
264 --color, --color=MODE override color mode for character terminals;\n\
265 MODE defaults to `auto', and\n\
266 can also be `never', `always',\n\
267 or a mode name like `ansi8'\n\
268 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
269 --font, -fn FONT default font; must be fixed-width\n\
270 --foreground-color, -fg COLOR window foreground color\n\
271 --fullheight, -fh make the first frame high as the screen\n\
272 --fullscreen, -fs make the first frame fullscreen\n\
273 --fullwidth, -fw make the first frame wide as the screen\n\
274 --maximized, -mm make the first frame maximized\n\
275 --geometry, -g GEOMETRY window geometry\n\
276 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
277 --iconic start Emacs in iconified state\n\
278 --internal-border, -ib WIDTH width between text and main border\n\
279 --line-spacing, -lsp PIXELS additional space to put between lines\n\
280 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
281 --name NAME title for initial Emacs frame\n\
282 --no-blinking-cursor, -nbc disable blinking cursor\n\
283 --reverse-video, -r, -rv switch foreground and background\n\
284 --title, -T TITLE title for initial Emacs frame\n\
285 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
286 --xrm XRESOURCES set additional X resources\n\
287 --parent-id XID set parent window\n\
288 --help display this help and exit\n\
289 --version output version information and exit\n\
293 You can generally also specify long option names with a single -; for\n\
294 example, -batch as well as --batch. You can use any unambiguous\n\
295 abbreviation for a --option.\n\
297 Various environment variables and window system resources also affect\n\
298 Emacs' operation. See the main documentation.\n\
300 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
301 section of the Emacs manual or the file BUGS.\n"
304 /* Signal code for the fatal signal that was received. */
305 static int fatal_error_code
;
307 /* Nonzero if handling a fatal error already. */
308 int fatal_error_in_progress
;
310 /* If non-null, call this function from fatal_error_signal before
311 committing suicide. */
313 static void (*fatal_error_signal_hook
) (void);
315 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
316 /* When compiled with GTK and running under Gnome,
317 multiple threads may be created. Keep track of our main
318 thread to make sure signals are delivered to it (see syssignal.h). */
320 pthread_t main_thread
;
324 /* Handle bus errors, invalid instruction, etc. */
325 #ifndef FLOAT_CATCH_SIGILL
329 fatal_error_signal (int sig
)
331 SIGNAL_THREAD_CHECK (sig
);
332 fatal_error_code
= sig
;
333 signal (sig
, SIG_DFL
);
335 TOTALLY_UNBLOCK_INPUT
;
337 /* If fatal error occurs in code below, avoid infinite recursion. */
338 if (! fatal_error_in_progress
)
340 fatal_error_in_progress
= 1;
342 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
343 Fkill_emacs (make_number (sig
));
345 shut_down_emacs (sig
, 0, Qnil
);
348 /* Signal the same code; this time it will really be fatal.
349 Remember that since we're in a signal handler, the signal we're
350 going to send is probably blocked, so we have to unblock it if we
351 want to really receive it. */
353 sigunblock (sigmask (fatal_error_code
));
356 if (fatal_error_signal_hook
)
357 fatal_error_signal_hook ();
359 kill (getpid (), fatal_error_code
);
364 /* Handler for SIGDANGER. */
366 memory_warning_signal (int sig
)
368 signal (sig
, memory_warning_signal
);
369 SIGNAL_THREAD_CHECK (sig
);
371 malloc_warning ("Operating system warns that virtual memory is running low.\n");
373 /* It might be unsafe to call do_auto_save now. */
374 force_auto_save_soon ();
378 /* We define abort, rather than using it from the library,
379 so that GDB can return from a breakpoint here.
380 MSDOS has its own definition in msdos.c. */
382 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
387 kill (getpid (), SIGABRT
);
388 /* This shouldn't be executed, but it prevents a warning. */
394 /* Code for dealing with Lisp access to the Unix command line. */
397 init_cmdargs (int argc
, char **argv
, int skip_args
)
400 Lisp_Object name
, dir
, handler
;
401 int count
= SPECPDL_INDEX ();
402 Lisp_Object raw_name
;
407 raw_name
= build_string (argv
[0]);
409 /* Add /: to the front of the name
410 if it would otherwise be treated as magic. */
411 handler
= Ffind_file_name_handler (raw_name
, Qt
);
412 if (! NILP (handler
))
413 raw_name
= concat2 (build_string ("/:"), raw_name
);
415 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
416 Vinvocation_directory
= Ffile_name_directory (raw_name
);
418 /* If we got no directory in argv[0], search PATH to find where
419 Emacs actually came from. */
420 if (NILP (Vinvocation_directory
))
423 int yes
= openp (Vexec_path
, Vinvocation_name
,
424 Vexec_suffixes
, &found
, make_number (X_OK
));
427 /* Add /: to the front of the name
428 if it would otherwise be treated as magic. */
429 handler
= Ffind_file_name_handler (found
, Qt
);
430 if (! NILP (handler
))
431 found
= concat2 (build_string ("/:"), found
);
432 Vinvocation_directory
= Ffile_name_directory (found
);
436 if (!NILP (Vinvocation_directory
)
437 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
438 /* Emacs was started with relative path, like ./emacs.
440 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
442 Vinstallation_directory
= Qnil
;
444 if (!NILP (Vinvocation_directory
))
446 dir
= Vinvocation_directory
;
447 name
= Fexpand_file_name (Vinvocation_name
, dir
);
450 Lisp_Object tem
, lib_src_exists
;
451 Lisp_Object etc_exists
, info_exists
;
453 /* See if dir contains subdirs for use by Emacs.
454 Check for the ones that would exist in a build directory,
455 not including lisp and info. */
456 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
457 lib_src_exists
= Ffile_exists_p (tem
);
460 /* MSDOS installations frequently remove lib-src, but we still
461 must set installation-directory, or else info won't find
462 its files (it uses the value of installation-directory). */
463 tem
= Fexpand_file_name (build_string ("info"), dir
);
464 info_exists
= Ffile_exists_p (tem
);
469 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
471 tem
= Fexpand_file_name (build_string ("etc"), dir
);
472 etc_exists
= Ffile_exists_p (tem
);
473 if (!NILP (etc_exists
))
475 Vinstallation_directory
476 = Ffile_name_as_directory (dir
);
481 /* See if dir's parent contains those subdirs. */
482 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
483 lib_src_exists
= Ffile_exists_p (tem
);
487 /* See the MSDOS commentary above. */
488 tem
= Fexpand_file_name (build_string ("../info"), dir
);
489 info_exists
= Ffile_exists_p (tem
);
494 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
496 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
497 etc_exists
= Ffile_exists_p (tem
);
498 if (!NILP (etc_exists
))
500 tem
= Fexpand_file_name (build_string (".."), dir
);
501 Vinstallation_directory
502 = Ffile_name_as_directory (tem
);
507 /* If the Emacs executable is actually a link,
508 next try the dir that the link points into. */
509 tem
= Ffile_symlink_p (name
);
512 name
= Fexpand_file_name (tem
, dir
);
513 dir
= Ffile_name_directory (name
);
520 Vcommand_line_args
= Qnil
;
522 for (i
= argc
- 1; i
>= 0; i
--)
524 if (i
== 0 || i
> skip_args
)
525 /* For the moment, we keep arguments as is in unibyte strings.
526 They are decoded in the function command-line after we know
527 locale-coding-system. */
529 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
533 unbind_to (count
, Qnil
);
536 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
537 doc
: /* Return the program name that was used to run Emacs.
538 Any directory names are omitted. */)
541 return Fcopy_sequence (Vinvocation_name
);
544 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
546 doc
: /* Return the directory name in which the Emacs executable was located. */)
549 return Fcopy_sequence (Vinvocation_directory
);
554 /* A valid but unlikely value for the TZ environment value.
555 It is OK (though a bit slower) if the user actually chooses this value. */
556 static char dump_tz
[] = "UtC0";
559 #ifndef ORDINARY_LINK
560 /* We don't include crtbegin.o and crtend.o in the link,
561 so these functions and variables might be missed.
562 Provide dummy definitions to avoid error.
563 (We don't have any real constructors or destructors.) */
566 /* Define a dummy function F. Declare F too, to pacify gcc
567 -Wmissing-prototypes. */
568 #define DEFINE_DUMMY_FUNCTION(f) \
569 void f (void) EXTERNALLY_VISIBLE; void f (void) {}
571 #ifndef GCC_CTORS_IN_LIBC
572 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
573 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
574 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
575 /* GNU/Linux has a bug in its library; avoid an error. */
577 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
579 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
580 #endif /* GCC_CTORS_IN_LIBC */
581 DEFINE_DUMMY_FUNCTION (__main
)
582 #endif /* __GNUC__ */
583 #endif /* ORDINARY_LINK */
585 /* Test whether the next argument in ARGV matches SSTR or a prefix of
586 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
587 (the argument is supposed to have a value) store in *VALPTR either
588 the next argument or the portion of this one after the equal sign.
589 ARGV is read starting at position *SKIPPTR; this index is advanced
590 by the number of arguments used.
592 Too bad we can't just use getopt for all of this, but we don't have
593 enough information to do it right. */
596 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
597 int minlen
, char **valptr
, int *skipptr
)
603 /* Don't access argv[argc]; give up in advance. */
604 if (argc
<= *skipptr
+ 1)
607 arg
= argv
[*skipptr
+1];
610 if (strcmp (arg
, sstr
) == 0)
614 *valptr
= argv
[*skipptr
+2];
621 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
622 ? p
- arg
: strlen (arg
));
623 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
625 else if (valptr
== NULL
)
636 else if (argv
[*skipptr
+2] != NULL
)
638 *valptr
= argv
[*skipptr
+2];
648 #ifdef DOUG_LEA_MALLOC
650 /* malloc can be invoked even before main (e.g. by the dynamic
651 linker), so the dumped malloc state must be restored as early as
652 possible using this special hook. */
655 malloc_initialize_hook (void)
658 extern char **environ
;
663 if (!malloc_using_checking
)
664 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
665 ignored if the heap to be restored was constructed without
666 malloc checking. Can't use unsetenv, since that calls malloc. */
670 for (p
= environ
; p
&& *p
; p
++)
671 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
680 malloc_set_state (malloc_state_ptr
);
681 #ifndef XMALLOC_OVERRUN_CHECK
682 free (malloc_state_ptr
);
687 if (my_heap_start
== 0)
688 my_heap_start
= sbrk (0);
689 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
693 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
695 #endif /* DOUG_LEA_MALLOC */
700 main (int argc
, char **argv
)
705 char stack_bottom_variable
;
706 int do_initial_setlocale
;
708 #ifdef HAVE_SETRLIMIT
723 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
724 /* This is used by the Cygwin build. */
725 setenv ("G_SLICE", "always-malloc", 1);
731 extern char my_endbss
[];
732 extern char *my_endbss_static
;
734 if (my_heap_start
== 0)
735 my_heap_start
= sbrk (0);
737 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
741 #ifdef RUN_TIME_REMAP
743 run_time_remap (argv
[0]);
746 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
749 unexec_init_emacs_zone ();
752 sort_args (argc
, argv
);
754 while (argv
[argc
]) argc
++;
756 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
758 const char *version
, *copyright
;
761 Lisp_Object tem
, tem2
;
762 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
763 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
766 fprintf (stderr
, "Invalid value of `emacs-version'\n");
771 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
776 version
= SSDATA (tem
);
777 copyright
= SSDATA (tem2
);
782 version
= emacs_version
;
783 copyright
= emacs_copyright
;
785 printf ("GNU Emacs %s\n", version
);
786 printf ("%s\n", copyright
);
787 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
788 printf ("You may redistribute copies of Emacs\n");
789 printf ("under the terms of the GNU General Public License.\n");
790 printf ("For more information about these matters, ");
791 printf ("see the file named COPYING.\n");
795 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
796 if (chdir (ch_to_dir
) == -1)
798 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
799 argv
[0], ch_to_dir
, strerror (errno
));
804 #ifdef HAVE_PERSONALITY_LINUX32
806 && (strcmp (argv
[argc
-1], "dump") == 0
807 || strcmp (argv
[argc
-1], "bootstrap") == 0)
808 && ! getenv ("EMACS_HEAP_EXEC"))
810 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
811 /* Set this so we only do this once. */
814 /* A flag to turn off address randomization which is introduced
815 in linux kernel shipped with fedora core 4 */
816 #define ADD_NO_RANDOMIZE 0x0040000
817 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
818 #undef ADD_NO_RANDOMIZE
820 execvp (argv
[0], argv
);
822 /* If the exec fails, try to dump anyway. */
825 #endif /* HAVE_PERSONALITY_LINUX32 */
827 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
828 /* Extend the stack space available.
829 Don't do that if dumping, since some systems (e.g. DJGPP)
830 might define a smaller stack limit at that time. */
833 && (!noninteractive
|| initialized
)
835 && !getrlimit (RLIMIT_STACK
, &rlim
))
838 extern size_t re_max_failures
;
839 /* Approximate the amount regex.c needs per unit of re_max_failures. */
840 int ratio
= 20 * sizeof (char *);
841 /* Then add 33% to cover the size of the smaller stacks that regex.c
842 successively allocates and discards, on its way to the maximum. */
844 /* Add in some extra to cover
845 what we're likely to use for other reasons. */
846 newlim
= re_max_failures
* ratio
+ 200000;
848 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
849 stack allocation routine for new process that the allocation
850 fails if stack limit is not on page boundary. So, round up the
851 new limit to page boundary. */
852 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
854 if (newlim
> rlim
.rlim_max
)
856 newlim
= rlim
.rlim_max
;
857 /* Don't let regex.c overflow the stack we have. */
858 re_max_failures
= (newlim
- 200000) / ratio
;
860 if (rlim
.rlim_cur
< newlim
)
861 rlim
.rlim_cur
= newlim
;
863 setrlimit (RLIMIT_STACK
, &rlim
);
865 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
867 /* Record (approximately) where the stack begins. */
868 stack_bottom
= &stack_bottom_variable
;
872 #ifndef SYSTEM_MALLOC
873 /* Arrange to get warning messages as memory fills up. */
874 memory_warnings (0, malloc_warning
);
876 /* Call malloc at least once, to run the initial __malloc_hook.
877 Also call realloc and free for consistency. */
878 free (realloc (malloc (4), 4));
881 /* Arrange to disable interrupt input inside malloc etc. */
882 uninterrupt_malloc ();
883 # endif /* not SYNC_INPUT */
884 #endif /* not SYSTEM_MALLOC */
886 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
887 main_thread
= pthread_self ();
888 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
890 #if defined (MSDOS) || defined (WINDOWSNT)
891 /* We do all file input/output as binary files. When we need to translate
892 newlines, we do that manually. */
894 #endif /* MSDOS || WINDOWSNT */
897 if (!isatty (fileno (stdin
)))
898 setmode (fileno (stdin
), O_BINARY
);
899 if (!isatty (fileno (stdout
)))
902 setmode (fileno (stdout
), O_BINARY
);
906 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
907 The build procedure uses this while dumping, to ensure that the
908 dumped Emacs does not have its system locale tables initialized,
909 as that might cause screwups when the dumped Emacs starts up. */
911 char *lc_all
= getenv ("LC_ALL");
912 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
915 /* Set locale now, so that initial error messages are localized properly.
916 fixup_locale must wait until later, since it builds strings. */
917 if (do_initial_setlocale
)
918 setlocale (LC_ALL
, "");
920 inhibit_window_system
= 0;
922 /* Handle the -t switch, which specifies filename to use as terminal. */
926 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
931 result
= emacs_open (term
, O_RDWR
, 0);
932 if (result
< 0 || dup (0) < 0)
934 char *errstring
= strerror (errno
);
935 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
940 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
943 fprintf (stderr
, "Using %s\n", term
);
944 #ifdef HAVE_WINDOW_SYSTEM
945 inhibit_window_system
= 1; /* -t => -nw */
952 /* Command line option --no-windows is deprecated and thus not mentioned
953 in the manual and usage informations. */
954 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
955 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
956 inhibit_window_system
= 1;
958 /* Handle the -batch switch, which means don't do interactive display. */
960 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
963 Vundo_outer_limit
= Qnil
;
965 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
967 noninteractive
= 1; /* Set batch mode. */
968 /* Convert --script to -scriptload, un-skip it, and sort again
969 so that it will be handled in proper sequence. */
970 /* FIXME broken for --script=FILE - is that supposed to work? */
971 argv
[skip_args
- 1] = (char *) "-scriptload";
973 sort_args (argc
, argv
);
976 /* Handle the --help option, which gives a usage message. */
977 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
979 printf (USAGE1
, argv
[0], USAGE2
);
985 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
986 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
991 /* Start as a daemon: fork a new child process which will run the
992 rest of the initialization code, then exit.
994 Detaching a daemon requires the following steps:
998 - close the tty file-descriptors
1000 We only want to do the last 2 steps once the daemon is ready to
1001 serve requests, i.e. after loading .emacs (initialization).
1002 OTOH initialization may start subprocesses (e.g. ispell) and these
1003 should be run from the proper process (the one that will end up
1004 running as daemon) and with the proper "session id" in order for
1005 them to keep working after detaching, so fork and setsid need to be
1006 performed before initialization.
1008 We want to avoid exiting before the server socket is ready, so
1009 use a pipe for synchronization. The parent waits for the child
1010 to close its end of the pipe (using `daemon-initialized')
1012 if (pipe (daemon_pipe
) == -1)
1014 fprintf (stderr
, "Cannot pipe!\n");
1018 #ifndef NS_IMPL_COCOA
1020 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1021 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1022 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1025 #else /* NS_IMPL_COCOA */
1026 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1027 forked process: http://developer.apple.com/ReleaseNotes/
1028 CoreFoundation/CoreFoundation.html)
1029 We mark being in the exec'd process by a daemon name argument of
1030 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1031 NAME is the original daemon name, if any. */
1032 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1033 f
= fork (); /* in orig */
1035 f
= 0; /* in exec'd */
1036 #endif /* NS_IMPL_COCOA */
1042 /* Close unused writing end of the pipe. */
1043 close (daemon_pipe
[1]);
1045 /* Just wait for the child to close its end of the pipe. */
1048 retval
= read (daemon_pipe
[0], &buf
, 1);
1050 while (retval
== -1 && errno
== EINTR
);
1054 fprintf (stderr
, "Error reading status from child\n");
1057 else if (retval
== 0)
1059 fprintf (stderr
, "Error: server did not start correctly\n");
1063 close (daemon_pipe
[0]);
1068 fprintf (stderr
, "Cannot fork!\n");
1072 #ifdef NS_IMPL_COCOA
1074 /* In orig process, forked as child, OR in exec'd. */
1075 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1076 { /* In orig, child: now exec w/special daemon name. */
1079 snprintf (fdStr
, sizeof fdStr
,
1080 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1081 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1083 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1085 fprintf (stderr
, "daemon: child name too long\n");
1089 argv
[skip_args
] = fdStr
;
1091 execv (argv
[0], argv
);
1092 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1096 /* In exec'd: parse special dname into pipe and name info. */
1097 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1098 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1100 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1103 dname_arg2
[0] = '\0';
1104 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1106 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1108 #endif /* NS_IMPL_COCOA */
1111 daemon_name
= xstrdup (dname_arg
);
1112 /* Close unused reading end of the pipe. */
1113 close (daemon_pipe
[0]);
1114 /* Make sure that the used end of the pipe is closed on exec, so
1115 that it is not accessible to programs started from .emacs. */
1116 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1122 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1127 if (! noninteractive
)
1129 #if defined (USG5) && defined (INTERRUPT_INPUT)
1132 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1134 extern void malloc_enable_thread (void);
1136 malloc_enable_thread ();
1143 /* Don't catch SIGHUP if dumping. */
1150 sigblock (sigmask (SIGHUP
));
1151 /* In --batch mode, don't catch SIGHUP if already ignored.
1152 That makes nohup work. */
1153 if (! noninteractive
1154 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1155 signal (SIGHUP
, fatal_error_signal
);
1156 sigunblock (sigmask (SIGHUP
));
1161 ! noninteractive
|| initialized
1167 /* Don't catch these signals in batch mode if dumping.
1168 On some machines, this sets static data that would make
1169 signal fail to work right when the dumped Emacs is run. */
1170 signal (SIGQUIT
, fatal_error_signal
);
1171 signal (SIGILL
, fatal_error_signal
);
1172 signal (SIGTRAP
, fatal_error_signal
);
1174 add_user_signal (SIGUSR1
, "sigusr1");
1177 add_user_signal (SIGUSR2
, "sigusr2");
1180 signal (SIGABRT
, fatal_error_signal
);
1183 signal (SIGHWE
, fatal_error_signal
);
1186 signal (SIGPRE
, fatal_error_signal
);
1189 signal (SIGORE
, fatal_error_signal
);
1192 signal (SIGUME
, fatal_error_signal
);
1195 signal (SIGDLK
, fatal_error_signal
);
1198 signal (SIGCPULIM
, fatal_error_signal
);
1201 /* This is missing on some systems - OS/2, for example. */
1202 signal (SIGIOT
, fatal_error_signal
);
1205 signal (SIGEMT
, fatal_error_signal
);
1207 signal (SIGFPE
, fatal_error_signal
);
1209 signal (SIGBUS
, fatal_error_signal
);
1211 signal (SIGSEGV
, fatal_error_signal
);
1213 signal (SIGSYS
, fatal_error_signal
);
1215 /* May need special treatment on MS-Windows. See
1216 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1217 Please update the doc of kill-emacs, kill-emacs-hook, and
1218 NEWS if you change this.
1220 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1221 signal (SIGTERM
, fatal_error_signal
);
1223 signal (SIGXCPU
, fatal_error_signal
);
1226 signal (SIGXFSZ
, fatal_error_signal
);
1227 #endif /* SIGXFSZ */
1230 /* This just means available memory is getting low. */
1231 signal (SIGDANGER
, memory_warning_signal
);
1235 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1236 signal (SIGXCPU
, fatal_error_signal
);
1237 signal (SIGIOINT
, fatal_error_signal
);
1238 signal (SIGGRANT
, fatal_error_signal
);
1239 signal (SIGRETRACT
, fatal_error_signal
);
1240 signal (SIGSOUND
, fatal_error_signal
);
1241 signal (SIGMSG
, fatal_error_signal
);
1245 noninteractive1
= noninteractive
;
1247 /* Perform basic initializations (not merely interning symbols). */
1254 init_character_once ();
1255 init_charset_once ();
1256 init_coding_once ();
1257 init_syntax_once (); /* Create standard syntax table. */
1258 init_category_once (); /* Create standard category table. */
1259 /* Must be done before init_buffer. */
1260 init_casetab_once ();
1261 init_buffer_once (); /* Create buffer table and some buffers. */
1262 init_minibuf_once (); /* Create list of minibuffers. */
1263 /* Must precede init_window_once. */
1265 /* Call syms_of_xfaces before init_window_once because that
1266 function creates Vterminal_frame. Termcap frames now use
1267 faces, and the face implementation uses some symbols as
1270 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1271 be better to arrange things not to have this dependency. */
1273 /* Call syms_of_keyboard before init_window_once because
1274 keyboard sets up symbols that include some face names that
1275 the X support will want to use. This can happen when
1276 CANNOT_DUMP is defined. */
1277 syms_of_keyboard ();
1279 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1282 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1284 /* Before syms_of_coding because it initializes Qcharsetp. */
1286 /* Before init_window_once, because it sets up the
1287 Vcoding_system_hash_table. */
1288 syms_of_coding (); /* This should be after syms_of_fileio. */
1290 init_window_once (); /* Init the window system. */
1291 #ifdef HAVE_WINDOW_SYSTEM
1292 init_fringe_once (); /* Swap bitmaps if necessary. */
1293 #endif /* HAVE_WINDOW_SYSTEM */
1298 if (do_initial_setlocale
)
1301 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1302 Vsystem_time_locale
= Vprevious_system_time_locale
;
1307 #ifdef CLASH_DETECTION
1311 running_asynch_code
= 0;
1314 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1317 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1320 ns_alloc_autorelease_pool();
1321 if (!noninteractive
)
1323 #ifdef NS_IMPL_COCOA
1324 if (skip_args
< argc
)
1326 /* FIXME: Do the right thing if getenv returns NULL, or if
1328 if (!strncmp(argv
[skip_args
], "-psn", 4))
1331 chdir (getenv ("HOME"));
1333 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1336 chdir (getenv ("HOME"));
1341 #endif /* HAVE_NS */
1343 #ifdef HAVE_X_WINDOWS
1344 /* Stupid kludge to catch command-line display spec. We can't
1345 handle this argument entirely in window system dependent code
1346 because we don't even know which window system dependent code
1347 to run until we've recognized this argument. */
1349 char *displayname
= 0;
1350 int count_before
= skip_args
;
1352 /* Skip any number of -d options, but only use the last one. */
1355 int count_before_this
= skip_args
;
1357 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1359 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1364 count_before
= count_before_this
;
1367 /* If we have the form --display=NAME,
1368 convert it into -d name.
1369 This requires inserting a new element into argv. */
1370 if (displayname
&& count_before
< skip_args
)
1372 if (skip_args
== count_before
+ 1)
1374 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1375 (argc
- (count_before
+ 2)) * sizeof *argv
);
1376 argv
[count_before
+ 2] = displayname
;
1379 argv
[count_before
+ 1] = (char *) "-d";
1384 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1385 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1389 /* Don't actually discard this arg. */
1390 skip_args
= count_before
;
1392 #else /* !HAVE_X_WINDOWS */
1395 int count_before
= skip_args
;
1397 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1398 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1401 skip_args
= count_before
;
1405 /* argmatch must not be used after here,
1406 except when bulding temacs
1407 because the -d argument has not been skipped in skip_args. */
1410 /* Call early 'cause init_environment needs it. */
1412 /* Set defaults for several environment variables. */
1414 init_environment (argc
, argv
, skip_args
);
1421 /* Initialize environment from registry settings. */
1422 init_environment (argv
);
1423 init_ntproc (); /* must precede init_editfns. */
1433 /* Initialize and GC-protect Vinitial_environment and
1434 Vprocess_environment before set_initial_environment fills them
1437 syms_of_callproc ();
1438 /* egetenv is a pretty low-level facility, which may get called in
1439 many circumstances; it seems flimsy to put off initializing it
1440 until calling init_callproc. Do not do it when dumping. */
1441 if (initialized
|| ((strcmp (argv
[argc
-1], "dump") != 0
1442 && strcmp (argv
[argc
-1], "bootstrap") != 0)))
1443 set_initial_environment ();
1445 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1446 if this is not done. Do it after set_global_environment so that we
1447 don't pollute Vglobal_environment. */
1448 /* Setting LANG here will defeat the startup locale processing... */
1453 init_buffer (); /* Init default directory of main buffer. */
1455 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1456 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1460 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1461 Lisp_Object old_log_max
;
1462 old_log_max
= Vmessage_log_max
;
1463 XSETFASTINT (Vmessage_log_max
, 0);
1464 message_dolog ("", 0, 1, 0);
1465 Vmessage_log_max
= old_log_max
;
1468 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1471 /* Intern the names of all standard functions and variables;
1472 define standard keys. */
1476 /* The basic levels of Lisp must come first. Note that
1477 syms_of_data and some others have already been called. */
1483 syms_of_floatfns ();
1486 syms_of_bytecode ();
1488 syms_of_casefiddle ();
1490 syms_of_category ();
1492 syms_of_character ();
1499 syms_of_filelock ();
1502 /* syms_of_keymap (); */
1510 syms_of_terminal ();
1516 syms_of_textprop ();
1517 syms_of_composite ();
1520 #endif /* WINDOWSNT */
1524 #ifdef HAVE_WINDOW_SYSTEM
1527 #endif /* HAVE_WINDOW_SYSTEM */
1528 #ifdef HAVE_X_WINDOWS
1533 #ifdef HAVE_XWIDGETS
1536 syms_of_xsettings ();
1543 #endif /* HAVE_X_WINDOWS */
1554 syms_of_w32select ();
1557 #endif /* HAVE_NTGUI */
1563 syms_of_win16select();
1570 syms_of_nsselect ();
1572 #endif /* HAVE_NS */
1579 syms_of_dbusbind ();
1580 #endif /* HAVE_DBUS */
1584 #endif /* WINDOWSNT */
1586 keys_of_casefiddle ();
1589 keys_of_keyboard ();
1595 /* Initialization that must be done even if the global variable
1596 initialized is non zero. */
1598 globals_of_w32fns ();
1599 globals_of_w32menu ();
1600 globals_of_w32select ();
1601 #endif /* HAVE_NTGUI */
1606 init_editfns (); /* init_process uses Voperating_system_release. */
1607 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1608 init_keyboard (); /* This too must precede init_sys_modes. */
1609 if (!noninteractive
)
1610 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1613 #ifdef HAVE_WINDOW_SYSTEM
1616 #endif /* HAVE_WINDOW_SYSTEM */
1628 /* Handle -l loadup, args passed by Makefile. */
1629 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1630 Vtop_level
= Fcons (intern_c_string ("load"),
1631 Fcons (build_string (file
), Qnil
));
1632 /* Unless next switch is -nl, load "loadup.el" first thing. */
1634 Vtop_level
= Fcons (intern_c_string ("load"),
1635 Fcons (build_string ("loadup.el"), Qnil
));
1642 /* If the execution TZ happens to be the same as the dump TZ,
1643 change it to some other value and then change it back,
1644 to force the underlying implementation to reload the TZ info.
1645 This is needed on implementations that load TZ info from files,
1646 since the TZ file contents may differ between dump and execution. */
1647 char *tz
= getenv ("TZ");
1648 if (tz
&& !strcmp (tz
, dump_tz
))
1658 /* Set up for profiling. This is known to work on FreeBSD,
1659 GNU/Linux and MinGW. It might work on some other systems too.
1660 Give it a try and tell us if it works on your system. To compile
1661 for profiling, use the configure option --enable-profiling. */
1662 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1666 extern void _mcleanup ();
1668 extern unsigned char etext
asm ("etext");
1672 #ifdef HAVE___EXECUTABLE_START
1673 /* This symbol is defined by GNU ld to the start of the text
1675 extern char __executable_start
[];
1677 extern void safe_bcopy ();
1681 #ifdef HAVE___EXECUTABLE_START
1682 monstartup (__executable_start
, &etext
);
1684 /* This uses safe_bcopy because that function comes first in the
1685 Emacs executable. It might be better to use something that
1686 gives the start of the text segment, but start_of_text is not
1687 defined on all systems now. */
1688 /* FIXME: Does not work on architectures with function
1690 monstartup (safe_bcopy
, &etext
);
1700 #ifdef LOCALTIME_CACHE
1701 /* Some versions of localtime have a bug. They cache the value of the time
1702 zone rather than looking it up every time. Since localtime() is
1703 called to bolt the undumping time into the undumped emacs, this
1704 results in localtime ignoring the TZ environment variable.
1705 This flushes the new TZ value into localtime. */
1707 #endif /* defined (LOCALTIME_CACHE) */
1709 /* Enter editor command loop. This never returns. */
1715 /* Sort the args so we can find the most important ones
1716 at the beginning of argv. */
1718 /* First, here's a table of all the standard options. */
1720 struct standard_args
1723 const char *longname
;
1728 static const struct standard_args standard_args
[] =
1730 { "-version", "--version", 150, 0 },
1731 { "-chdir", "--chdir", 130, 1 },
1732 { "-t", "--terminal", 120, 1 },
1733 { "-nw", "--no-window-system", 110, 0 },
1734 { "-nw", "--no-windows", 110, 0 },
1735 { "-batch", "--batch", 100, 0 },
1736 { "-script", "--script", 100, 1 },
1737 { "-daemon", "--daemon", 99, 0 },
1738 { "-help", "--help", 90, 0 },
1739 { "-nl", "--no-loadup", 70, 0 },
1740 { "-nsl", "--no-site-lisp", 65, 0 },
1741 /* -d must come last before the options handled in startup.el. */
1742 { "-d", "--display", 60, 1 },
1743 { "-display", 0, 60, 1 },
1744 /* Now for the options handled in `command-line' (startup.el). */
1745 /* (Note that to imply -nsl, -Q is partially handled here.) */
1746 { "-Q", "--quick", 55, 0 },
1747 { "-quick", 0, 55, 0 },
1748 { "-q", "--no-init-file", 50, 0 },
1749 { "-no-init-file", 0, 50, 0 },
1750 { "-no-site-file", "--no-site-file", 40, 0 },
1751 { "-u", "--user", 30, 1 },
1752 { "-user", 0, 30, 1 },
1753 { "-debug-init", "--debug-init", 20, 0 },
1754 { "-iconic", "--iconic", 15, 0 },
1755 { "-D", "--basic-display", 12, 0},
1756 { "-basic-display", 0, 12, 0},
1757 { "-nbc", "--no-blinking-cursor", 12, 0 },
1758 /* Now for the options handled in `command-line-1' (startup.el). */
1759 { "-nbi", "--no-bitmap-icon", 10, 0 },
1760 { "-bg", "--background-color", 10, 1 },
1761 { "-background", 0, 10, 1 },
1762 { "-fg", "--foreground-color", 10, 1 },
1763 { "-foreground", 0, 10, 1 },
1764 { "-bd", "--border-color", 10, 1 },
1765 { "-bw", "--border-width", 10, 1 },
1766 { "-ib", "--internal-border", 10, 1 },
1767 { "-ms", "--mouse-color", 10, 1 },
1768 { "-cr", "--cursor-color", 10, 1 },
1769 { "-fn", "--font", 10, 1 },
1770 { "-font", 0, 10, 1 },
1771 { "-fs", "--fullscreen", 10, 0 },
1772 { "-fw", "--fullwidth", 10, 0 },
1773 { "-fh", "--fullheight", 10, 0 },
1774 { "-mm", "--maximized", 10, 0 },
1775 { "-g", "--geometry", 10, 1 },
1776 { "-geometry", 0, 10, 1 },
1777 { "-T", "--title", 10, 1 },
1778 { "-title", 0, 10, 1 },
1779 { "-name", "--name", 10, 1 },
1780 { "-xrm", "--xrm", 10, 1 },
1781 { "-parent-id", "--parent-id", 10, 1 },
1782 { "-r", "--reverse-video", 5, 0 },
1784 { "-reverse", 0, 5, 0 },
1785 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1786 { "-vb", "--vertical-scroll-bars", 5, 0 },
1787 { "-color", "--color", 5, 0},
1788 { "-no-splash", "--no-splash", 3, 0 },
1789 { "-no-desktop", "--no-desktop", 3, 0 },
1791 { "-NSAutoLaunch", 0, 5, 1 },
1792 { "-NXAutoLaunch", 0, 5, 1 },
1793 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1794 { "-_NSMachLaunch", 0, 85, 1 },
1795 { "-MachLaunch", 0, 85, 1 },
1796 { "-macosx", 0, 85, 0 },
1797 { "-NSHost", 0, 85, 1 },
1799 /* These have the same priority as ordinary file name args,
1800 so they are not reordered with respect to those. */
1801 { "-L", "--directory", 0, 1 },
1802 { "-directory", 0, 0, 1 },
1803 { "-l", "--load", 0, 1 },
1804 { "-load", 0, 0, 1 },
1805 /* This has no longname, because using --scriptload confuses sort_args,
1806 because then the --script long option seems to match twice; ie
1807 you can't have a long option which is a prefix of another long
1808 option. In any case, this is entirely an internal option. */
1809 { "-scriptload", NULL
, 0, 1 },
1810 { "-f", "--funcall", 0, 1 },
1811 { "-funcall", 0, 0, 1 },
1812 { "-eval", "--eval", 0, 1 },
1813 { "-execute", "--execute", 0, 1 },
1814 { "-find-file", "--find-file", 0, 1 },
1815 { "-visit", "--visit", 0, 1 },
1816 { "-file", "--file", 0, 1 },
1817 { "-insert", "--insert", 0, 1 },
1819 { "-NXOpen", 0, 0, 1 },
1820 { "-NXOpenTemp", 0, 0, 1 },
1821 { "-NSOpen", 0, 0, 1 },
1822 { "-NSOpenTemp", 0, 0, 1 },
1823 { "-GSFilePath", 0, 0, 1 },
1825 /* This should be processed after ordinary file name args and the like. */
1826 { "-kill", "--kill", -10, 0 },
1829 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1830 so that the highest priority ones come first.
1831 Do not change the order of elements of equal priority.
1832 If an option takes an argument, keep it and its argument together.
1834 If an option that takes no argument appears more
1835 than once, eliminate all but one copy of it. */
1838 sort_args (int argc
, char **argv
)
1840 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1841 /* For each element of argv,
1842 the corresponding element of options is:
1843 0 for an option that takes no arguments,
1844 1 for an option that takes one argument, etc.
1845 -1 for an ordinary non-option argument. */
1846 int *options
= xnmalloc (argc
, sizeof *options
);
1847 int *priority
= xnmalloc (argc
, sizeof *priority
);
1849 int incoming_used
= 1;
1853 /* Categorize all the options,
1854 and figure out which argv elts are option arguments. */
1855 for (from
= 1; from
< argc
; from
++)
1859 if (argv
[from
][0] == '-')
1863 /* If we have found "--", don't consider
1864 any more arguments as options. */
1865 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1867 /* Leave the "--", and everything following it, at the end. */
1868 for (; from
< argc
; from
++)
1870 priority
[from
] = -100;
1876 /* Look for a match with a known old-fashioned option. */
1877 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1878 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1880 options
[from
] = standard_args
[i
].nargs
;
1881 priority
[from
] = standard_args
[i
].priority
;
1882 if (from
+ standard_args
[i
].nargs
>= argc
)
1883 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1884 from
+= standard_args
[i
].nargs
;
1888 /* Look for a match with a known long option.
1889 MATCH is -1 if no match so far, -2 if two or more matches so far,
1890 >= 0 (the table index of the match) if just one match so far. */
1891 if (argv
[from
][1] == '-')
1893 char const *equals
= strchr (argv
[from
], '=');
1895 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1900 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1901 if (standard_args
[i
].longname
1902 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1911 /* If we found exactly one match, use that. */
1914 options
[from
] = standard_args
[match
].nargs
;
1915 priority
[from
] = standard_args
[match
].priority
;
1916 /* If --OPTION=VALUE syntax is used,
1917 this option uses just one argv element. */
1920 if (from
+ options
[from
] >= argc
)
1921 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1922 from
+= options
[from
];
1924 /* FIXME When match < 0, shouldn't there be some error,
1925 or at least indication to the user that there was a
1932 /* Copy the arguments, in order of decreasing priority, to NEW. */
1934 while (incoming_used
< argc
)
1937 int best_priority
= -9999;
1939 /* Find the highest priority remaining option.
1940 If several have equal priority, take the first of them. */
1941 for (from
= 1; from
< argc
; from
++)
1943 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1945 best_priority
= priority
[from
];
1948 /* Skip option arguments--they are tied to the options. */
1949 if (options
[from
] > 0)
1950 from
+= options
[from
];
1956 /* Copy the highest priority remaining option, with its args, to NEW.
1957 Unless it is a duplicate of the previous one. */
1958 if (! (options
[best
] == 0
1959 && ! strcmp (new[to
- 1], argv
[best
])))
1961 new[to
++] = argv
[best
];
1962 for (i
= 0; i
< options
[best
]; i
++)
1963 new[to
++] = argv
[best
+ i
+ 1];
1966 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1968 /* Clear out this option in ARGV. */
1970 for (i
= 0; i
< options
[best
]; i
++)
1971 argv
[best
+ i
+ 1] = 0;
1974 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1978 memcpy (argv
, new, sizeof (char *) * argc
);
1985 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1986 doc
: /* Exit the Emacs job and kill it.
1987 If ARG is an integer, return ARG as the exit program code.
1988 If ARG is a string, stuff it as keyboard input.
1990 This function is called upon receipt of the signals SIGTERM
1991 or SIGHUP, and upon SIGINT in batch mode.
1993 The value of `kill-emacs-hook', if not void,
1994 is a list of functions (of no args),
1995 all of which are called before Emacs is actually killed. */)
1998 struct gcpro gcpro1
;
2006 hook
= intern ("kill-emacs-hook");
2007 Frun_hooks (1, &hook
);
2011 #ifdef HAVE_X_WINDOWS
2012 /* Transfer any clipboards we own to the clipboard manager. */
2013 x_clipboard_manager_save_all ();
2016 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2018 /* If we have an auto-save list file,
2019 kill it because we are exiting Emacs deliberately (not crashing).
2020 Do it after shut_down_emacs, which does an auto-save. */
2021 if (STRINGP (Vauto_save_list_file_name
))
2022 unlink (SSDATA (Vauto_save_list_file_name
));
2024 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
2028 /* Perform an orderly shutdown of Emacs. Autosave any modified
2029 buffers, kill any child processes, clean up the terminal modes (if
2030 we're in the foreground), and other stuff like that. Don't perform
2031 any redisplay; this may be called when Emacs is shutting down in
2032 the background, or after its X connection has died.
2034 If SIG is a signal number, print a message for it.
2036 This is called by fatal signal handlers, X protocol error handlers,
2040 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2042 /* Prevent running of hooks from now on. */
2045 /* Don't update display from now on. */
2046 Vinhibit_redisplay
= Qt
;
2048 /* If we are controlling the terminal, reset terminal modes. */
2051 int pgrp
= EMACS_GETPGRP (0);
2052 int tpgrp
= tcgetpgrp (0);
2053 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2055 reset_all_sys_modes ();
2056 if (sig
&& sig
!= SIGTERM
)
2057 fprintf (stderr
, "Fatal error (%d)", sig
);
2062 reset_all_sys_modes ();
2065 stuff_buffered_input (stuff
);
2067 inhibit_sentinels
= 1;
2068 kill_buffer_processes (Qnil
);
2069 Fdo_auto_save (Qt
, Qnil
);
2071 #ifdef CLASH_DETECTION
2072 unlock_all_files ();
2075 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2076 #ifdef HAVE_X_WINDOWS
2077 /* It's not safe to call intern here. Maybe we are crashing. */
2078 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2079 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2080 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2082 Fx_close_current_connection ();
2083 #endif /* HAVE_X_WINDOWS */
2087 /* There is a tendency for a SIGIO signal to arrive within exit,
2088 and cause a SIGHUP because the input descriptor is already closed. */
2090 signal (SIGIO
, SIG_IGN
);
2097 /* Do this only if terminating normally, we want glyph matrices
2098 etc. in a core dump. */
2099 if (sig
== 0 || sig
== SIGTERM
)
2101 check_glyph_memory ();
2102 check_message_stack ();
2110 ns_term_shutdown (sig
);
2114 xmlCleanupParser ();
2124 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2125 doc
: /* Dump current state of Emacs into executable file FILENAME.
2126 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2127 This is used in the file `loadup.el' when building Emacs.
2129 You must run Emacs in batch mode in order to dump it. */)
2130 (Lisp_Object filename
, Lisp_Object symfile
)
2134 int count
= SPECPDL_INDEX ();
2138 if (! noninteractive
)
2139 error ("Dumping Emacs works only in batch mode");
2143 /* Warn if the gap between BSS end and heap start is larger than this. */
2144 # define MAX_HEAP_BSS_DIFF (1024*1024)
2146 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2148 fprintf (stderr
, "**************************************************\n");
2149 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2150 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2152 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2153 fprintf (stderr
, "fail because of this. See the section about\n");
2154 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2155 fprintf (stderr
, "**************************************************\n");
2157 #endif /* GNU_LINUX */
2159 /* Bind `command-line-processed' to nil before dumping,
2160 so that the dumped Emacs will process its command line
2161 and set up to work with X windows if appropriate. */
2162 symbol
= intern ("command-line-processed");
2163 specbind (symbol
, Qnil
);
2165 CHECK_STRING (filename
);
2166 filename
= Fexpand_file_name (filename
, Qnil
);
2167 if (!NILP (symfile
))
2169 CHECK_STRING (symfile
);
2170 if (SCHARS (symfile
))
2171 symfile
= Fexpand_file_name (symfile
, Qnil
);
2175 Vpurify_flag
= Qnil
;
2178 set_time_zone_rule (dump_tz
);
2179 #ifndef LOCALTIME_CACHE
2180 /* Force a tz reload, since set_time_zone_rule doesn't. */
2186 /* Tell malloc where start of impure now is. */
2187 /* Also arrange for warnings when nearly out of space. */
2188 #ifndef SYSTEM_MALLOC
2190 /* On Windows, this was done before dumping, and that once suffices.
2191 Meanwhile, my_edata is not valid on Windows. */
2193 extern char my_edata
[];
2194 memory_warnings (my_edata
, malloc_warning
);
2196 #endif /* not WINDOWSNT */
2197 #if defined (HAVE_PTHREAD) && !defined SYNC_INPUT
2198 /* Pthread may call malloc before main, and then we will get an endless
2199 loop, because pthread_self (see alloc.c) calls malloc the first time
2200 it is called on some systems. */
2201 reset_malloc_hooks ();
2203 #endif /* not SYSTEM_MALLOC */
2204 #ifdef DOUG_LEA_MALLOC
2205 malloc_state_ptr
= malloc_get_state ();
2208 #ifdef USE_MMAP_FOR_BUFFERS
2211 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2212 #ifdef USE_MMAP_FOR_BUFFERS
2215 #ifdef DOUG_LEA_MALLOC
2216 free (malloc_state_ptr
);
2221 return unbind_to (count
, Qnil
);
2224 #endif /* not CANNOT_DUMP */
2227 /* Recover from setlocale (LC_ALL, ""). */
2231 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2232 so that numbers are read and printed properly for Emacs Lisp. */
2233 setlocale (LC_NUMERIC
, "C");
2236 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2239 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2241 if (! EQ (*plocale
, desired_locale
))
2243 *plocale
= desired_locale
;
2244 setlocale (category
, (STRINGP (desired_locale
)
2245 ? SSDATA (desired_locale
)
2250 /* Set system time locale to match Vsystem_time_locale, if possible. */
2252 synchronize_system_time_locale (void)
2254 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2255 Vsystem_time_locale
);
2258 /* Set system messages locale to match Vsystem_messages_locale, if
2261 synchronize_system_messages_locale (void)
2264 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2265 Vsystem_messages_locale
);
2268 #endif /* HAVE_SETLOCALE */
2275 decode_env_path (const char *evarname
, const char *defalt
)
2277 const char *path
, *p
;
2278 Lisp_Object lpath
, element
, tem
;
2280 /* It's okay to use getenv here, because this function is only used
2281 to initialize variables when Emacs starts up, and isn't called
2284 path
= getenv (evarname
);
2290 /* Ensure values from the environment use the proper directory separator. */
2293 char *path_copy
= alloca (strlen (path
) + 1);
2294 strcpy (path_copy
, path
);
2295 dostounix_filename (path_copy
);
2302 p
= strchr (path
, SEPCHAR
);
2304 p
= path
+ strlen (path
);
2305 element
= (p
- path
? make_string (path
, p
- path
)
2306 : build_string ("."));
2308 /* Add /: to the front of the name
2309 if it would otherwise be treated as magic. */
2310 tem
= Ffind_file_name_handler (element
, Qt
);
2312 /* However, if the handler says "I'm safe",
2313 don't bother adding /:. */
2317 prop
= Fget (tem
, intern ("safe-magic"));
2323 element
= concat2 (build_string ("/:"), element
);
2325 lpath
= Fcons (element
, lpath
);
2331 return Fnreverse (lpath
);
2334 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2335 doc
: /* Return non-nil if the current emacs process is a daemon.
2336 If the daemon was given a name argument, return that name. */)
2341 return build_string (daemon_name
);
2348 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2349 doc
: /* Mark the Emacs daemon as being initialized.
2350 This finishes the daemonization process by doing the other half of detaching
2351 from the parent process and its tty file descriptors. */)
2358 error ("This function can only be called if emacs is run as a daemon");
2360 if (daemon_pipe
[1] < 0)
2361 error ("The daemon has already been initialized");
2363 if (NILP (Vafter_init_time
))
2364 error ("This function can only be called after loading the init files");
2366 /* Get rid of stdin, stdout and stderr. */
2367 nfd
= open ("/dev/null", O_RDWR
);
2369 err
|= dup2 (nfd
, 0) < 0;
2370 err
|= dup2 (nfd
, 1) < 0;
2371 err
|= dup2 (nfd
, 2) < 0;
2372 err
|= close (nfd
) != 0;
2374 /* Closing the pipe will notify the parent that it can exit.
2375 FIXME: In case some other process inherited the pipe, closing it here
2376 won't notify the parent because it's still open elsewhere, so we
2377 additionally send a byte, just to make sure the parent really exits.
2378 Instead, we should probably close the pipe in start-process and
2379 call-process to make sure the pipe is never inherited by
2381 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2382 err
|= close (daemon_pipe
[1]) != 0;
2383 /* Set it to an invalid value so we know we've already run this function. */
2384 daemon_pipe
[1] = -1;
2387 error ("I/O error during daemon initialization");
2392 syms_of_emacs (void)
2394 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2395 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2398 defsubr (&Sdump_emacs
);
2401 defsubr (&Skill_emacs
);
2403 defsubr (&Sinvocation_name
);
2404 defsubr (&Sinvocation_directory
);
2405 defsubr (&Sdaemonp
);
2406 defsubr (&Sdaemon_initialized
);
2408 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2409 doc
: /* Args passed by shell to Emacs, as a list of strings.
2410 Many arguments are deleted from the list as they are processed. */);
2412 DEFVAR_LISP ("system-type", Vsystem_type
,
2413 doc
: /* The value is a symbol indicating the type of operating system you are using.
2415 `gnu' compiled for a GNU Hurd system.
2416 `gnu/linux' compiled for a GNU/Linux system.
2417 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2418 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2419 `ms-dos' compiled as an MS-DOS application.
2420 `windows-nt' compiled as a native W32 application.
2421 `cygwin' compiled using the Cygwin library.
2422 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2423 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2424 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2425 /* The above values are from SYSTEM_TYPE in include files under src/s. */
2427 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2428 doc
: /* Value is string indicating configuration Emacs was built for.
2429 On MS-Windows, the value reflects the OS flavor and version on which
2430 Emacs is running. */);
2431 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2433 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2434 doc
: /* String containing the configuration options Emacs was built with. */);
2435 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2437 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2438 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2440 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2441 doc
: /* Hook to be run when `kill-emacs' is called.
2442 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2443 in other similar situations), functions placed on this hook should not
2444 expect to be able to interact with the user. To ask for confirmation,
2445 see `kill-emacs-query-functions' instead.
2447 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2448 `noninteractive' was non-nil. */);
2449 Vkill_emacs_hook
= Qnil
;
2451 DEFVAR_LISP ("path-separator", Vpath_separator
,
2452 doc
: /* String containing the character that separates directories in
2453 search paths, such as PATH and other similar environment variables. */);
2456 Vpath_separator
= make_string (&c
, 1);
2459 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2460 doc
: /* The program name that was used to run Emacs.
2461 Any directory names are omitted. */);
2463 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2464 doc
: /* The directory in which the Emacs executable was found, to run it.
2465 The value is nil if that directory's name is not known. */);
2467 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2468 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2469 This is non-nil when we can't find those directories in their standard
2470 installed locations, but we can find them near where the Emacs executable
2472 Vinstallation_directory
= Qnil
;
2474 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2475 doc
: /* System locale for messages. */);
2476 Vsystem_messages_locale
= Qnil
;
2478 DEFVAR_LISP ("previous-system-messages-locale",
2479 Vprevious_system_messages_locale
,
2480 doc
: /* Most recently used system locale for messages. */);
2481 Vprevious_system_messages_locale
= Qnil
;
2483 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2484 doc
: /* System locale for time. */);
2485 Vsystem_time_locale
= Qnil
;
2487 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2488 doc
: /* Most recently used system locale for time. */);
2489 Vprevious_system_time_locale
= Qnil
;
2491 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2492 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2493 Vbefore_init_time
= Qnil
;
2495 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2496 doc
: /* Value of `current-time' after loading the init files.
2497 This is nil during initialization. */);
2498 Vafter_init_time
= Qnil
;
2500 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2501 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2502 inhibit_x_resources
= 0;
2504 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2505 doc
: /* Short copyright string for this version of Emacs. */);
2506 Vemacs_copyright
= build_string (emacs_copyright
);
2508 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2509 doc
: /* Version numbers of this version of Emacs. */);
2510 Vemacs_version
= build_string (emacs_version
);
2512 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2513 doc
: /* Alist of dynamic libraries vs external files implementing them.
2514 Each element is a list (LIBRARY FILE...), where the car is a symbol
2515 representing a supported external library, and the rest are strings giving
2516 alternate filenames for that library.
2518 Emacs tries to load the library from the files in the order they appear on
2519 the list; if none is loaded, the running session of Emacs won't have access
2522 Note that image types `pbm' and `xbm' do not need entries in this variable
2523 because they do not depend on external libraries and are always available.
2525 Also note that this is not a generic facility for accessing external
2526 libraries; only those already known by Emacs will be loaded. */);
2527 Vdynamic_library_alist
= Qnil
;
2528 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2530 /* Make sure IS_DAEMON starts up as false. */