1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2012
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"
48 #include "character.h"
56 #include "blockinput.h"
57 #include "syssignal.h"
60 #include "termhooks.h"
72 #if (defined PROFILING \
73 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
74 # include <sys/gmon.h>
75 extern void moncontrol (int mode
);
88 #include <sys/resource.h>
91 #ifdef HAVE_PERSONALITY_LINUX32
92 #include <sys/personality.h>
99 static const char emacs_version
[] = VERSION
;
100 static const char emacs_copyright
[] = "Copyright (C) 2012 Free Software Foundation, Inc.";
102 /* Empty lisp strings. To avoid having to build any others. */
103 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
105 /* Set nonzero after Emacs has started up the first time.
106 Prevents reinitialization of the Lisp world and keymaps
107 on subsequent starts. */
111 extern void unexec_init_emacs_zone (void);
114 #ifdef DOUG_LEA_MALLOC
115 /* Preserves a pointer to the memory allocated that copies that
116 static data inside glibc's malloc. */
117 static void *malloc_state_ptr
;
118 /* From glibc, a routine that returns a copy of the malloc internal state. */
119 extern void *malloc_get_state (void);
120 /* From glibc, a routine that overwrites the malloc internal state. */
121 extern int malloc_set_state (void*);
122 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
123 dumping. Used to work around a bug in glibc's malloc. */
124 static int malloc_using_checking
;
127 Lisp_Object Qfile_name_handler_alist
;
129 Lisp_Object Qrisky_local_variable
;
131 Lisp_Object Qkill_emacs
;
133 /* If non-zero, Emacs should not attempt to use a window-specific code,
134 but instead should use the virtual terminal under which it was started. */
135 int inhibit_window_system
;
137 /* If non-zero, a filter or a sentinel is running. Tested to save the match
138 data on the first attempt to change it inside asynchronous code. */
139 int running_asynch_code
;
141 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
142 /* If non-zero, -d was specified, meaning we're using some window system. */
146 /* An address near the bottom of the stack.
147 Tells GC how to save a copy of the stack. */
150 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
151 /* The address where the heap starts (from the first sbrk (0) call). */
152 static void *my_heap_start
;
156 /* The gap between BSS end and heap start as far as we can tell. */
157 static uprintmax_t heap_bss_diff
;
160 /* Nonzero means running Emacs without interactive terminal. */
163 /* Nonzero means remove site-lisp directories from load-path. */
166 /* Name for the server started by the daemon.*/
167 static char *daemon_name
;
169 /* Pipe used to send exit notification to the daemon parent at
173 /* Save argv and argc. */
177 static void sort_args (int argc
, char **argv
);
178 static void syms_of_emacs (void);
180 /* MSVC needs each string be shorter than 2048 bytes, so the usage
181 strings below are split to not overflow this limit. */
183 Usage: %s [OPTION-OR-FILENAME]...\n\
185 Run Emacs, the extensible, customizable, self-documenting real-time\n\
186 display editor. The recommended way to start Emacs for normal editing\n\
187 is with no options at all.\n\
189 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
190 read the main documentation for these command-line arguments.\n\
192 Initialization options:\n\
194 --batch do not do interactive display; implies -q\n\
195 --chdir DIR change to directory DIR\n\
196 --daemon start a server in the background\n\
197 --debug-init enable Emacs Lisp debugger for init file\n\
198 --display, -d DISPLAY use X server DISPLAY\n\
199 --no-desktop do not load a saved desktop\n\
200 --no-init-file, -q load neither ~/.emacs nor default.el\n\
201 --no-shared-memory, -nl do not use shared memory\n\
202 --no-site-file do not load site-start.el\n\
203 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
204 --no-splash do not display a splash screen on startup\n\
205 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
206 --quick, -Q equivalent to:\n\
207 -q --no-site-file --no-site-lisp --no-splash\n\
208 --script FILE run FILE as an Emacs Lisp script\n\
209 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
210 --user, -u USER load ~USER/.emacs instead of your own\n\
216 FILE visit FILE using find-file\n\
217 +LINE go to line LINE in next FILE\n\
218 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
219 --directory, -L DIR add DIR to variable load-path\n\
220 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
221 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
222 --file FILE visit FILE using find-file\n\
223 --find-file FILE visit FILE using find-file\n\
224 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
225 --insert FILE insert contents of FILE into current buffer\n\
226 --kill exit without asking for confirmation\n\
227 --load, -l FILE load Emacs Lisp FILE using the load function\n\
228 --visit FILE visit FILE using find-file\n\
234 --background-color, -bg COLOR window background color\n\
235 --basic-display, -D disable many display features;\n\
236 used for debugging Emacs\n\
237 --border-color, -bd COLOR main border color\n\
238 --border-width, -bw WIDTH width of main border\n\
239 --color, --color=MODE override color mode for character terminals;\n\
240 MODE defaults to `auto', and\n\
241 can also be `never', `always',\n\
242 or a mode name like `ansi8'\n\
243 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
244 --font, -fn FONT default font; must be fixed-width\n\
245 --foreground-color, -fg COLOR window foreground color\n\
246 --fullheight, -fh make the first frame high as the screen\n\
247 --fullscreen, -fs make the first frame fullscreen\n\
248 --fullwidth, -fw make the first frame wide as the screen\n\
249 --maximized, -mm make the first frame maximized\n\
250 --geometry, -g GEOMETRY window geometry\n\
251 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
252 --iconic start Emacs in iconified state\n\
253 --internal-border, -ib WIDTH width between text and main border\n\
254 --line-spacing, -lsp PIXELS additional space to put between lines\n\
255 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
256 --name NAME title for initial Emacs frame\n\
257 --no-blinking-cursor, -nbc disable blinking cursor\n\
258 --reverse-video, -r, -rv switch foreground and background\n\
259 --title, -T TITLE title for initial Emacs frame\n\
260 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
261 --xrm XRESOURCES set additional X resources\n\
262 --parent-id XID set parent window\n\
263 --help display this help and exit\n\
264 --version output version information and exit\n\
268 You can generally also specify long option names with a single -; for\n\
269 example, -batch as well as --batch. You can use any unambiguous\n\
270 abbreviation for a --option.\n\
272 Various environment variables and window system resources also affect\n\
273 Emacs' operation. See the main documentation.\n\
275 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
276 section of the Emacs manual or the file BUGS.\n"
279 /* Signal code for the fatal signal that was received. */
280 static int fatal_error_code
;
282 /* Nonzero if handling a fatal error already. */
283 int fatal_error_in_progress
;
285 /* If non-null, call this function from fatal_error_signal before
286 committing suicide. */
288 static void (*fatal_error_signal_hook
) (void);
290 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
291 /* When compiled with GTK and running under Gnome,
292 multiple threads may be created. Keep track of our main
293 thread to make sure signals are delivered to it (see syssignal.h). */
295 pthread_t main_thread
;
299 /* NS autrelease pool, for memory management. */
300 static void *ns_pool
;
305 /* Handle bus errors, invalid instruction, etc. */
306 #ifndef FLOAT_CATCH_SIGILL
310 fatal_error_signal (int sig
)
312 SIGNAL_THREAD_CHECK (sig
);
313 fatal_error_code
= sig
;
314 signal (sig
, SIG_DFL
);
316 TOTALLY_UNBLOCK_INPUT
;
318 /* If fatal error occurs in code below, avoid infinite recursion. */
319 if (! fatal_error_in_progress
)
321 fatal_error_in_progress
= 1;
323 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
324 Fkill_emacs (make_number (sig
));
326 shut_down_emacs (sig
, 0, Qnil
);
329 /* Signal the same code; this time it will really be fatal.
330 Remember that since we're in a signal handler, the signal we're
331 going to send is probably blocked, so we have to unblock it if we
332 want to really receive it. */
334 sigunblock (sigmask (fatal_error_code
));
337 if (fatal_error_signal_hook
)
338 fatal_error_signal_hook ();
340 kill (getpid (), fatal_error_code
);
345 /* Handler for SIGDANGER. */
347 memory_warning_signal (int sig
)
349 signal (sig
, memory_warning_signal
);
350 SIGNAL_THREAD_CHECK (sig
);
352 malloc_warning ("Operating system warns that virtual memory is running low.\n");
354 /* It might be unsafe to call do_auto_save now. */
355 force_auto_save_soon ();
359 /* We define abort, rather than using it from the library,
360 so that GDB can return from a breakpoint here.
361 MSDOS has its own definition in msdos.c. */
363 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
368 kill (getpid (), SIGABRT
);
369 /* This shouldn't be executed, but it prevents a warning. */
375 /* Code for dealing with Lisp access to the Unix command line. */
378 init_cmdargs (int argc
, char **argv
, int skip_args
)
381 Lisp_Object name
, dir
, handler
;
382 ptrdiff_t count
= SPECPDL_INDEX ();
383 Lisp_Object raw_name
;
388 raw_name
= build_string (argv
[0]);
390 /* Add /: to the front of the name
391 if it would otherwise be treated as magic. */
392 handler
= Ffind_file_name_handler (raw_name
, Qt
);
393 if (! NILP (handler
))
394 raw_name
= concat2 (build_string ("/:"), raw_name
);
396 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
397 Vinvocation_directory
= Ffile_name_directory (raw_name
);
399 /* If we got no directory in argv[0], search PATH to find where
400 Emacs actually came from. */
401 if (NILP (Vinvocation_directory
))
404 int yes
= openp (Vexec_path
, Vinvocation_name
,
405 Vexec_suffixes
, &found
, make_number (X_OK
));
408 /* Add /: to the front of the name
409 if it would otherwise be treated as magic. */
410 handler
= Ffind_file_name_handler (found
, Qt
);
411 if (! NILP (handler
))
412 found
= concat2 (build_string ("/:"), found
);
413 Vinvocation_directory
= Ffile_name_directory (found
);
417 if (!NILP (Vinvocation_directory
)
418 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
419 /* Emacs was started with relative path, like ./emacs.
421 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
423 Vinstallation_directory
= Qnil
;
425 if (!NILP (Vinvocation_directory
))
427 dir
= Vinvocation_directory
;
429 /* If we are running from the build directory, set DIR to the
430 src subdirectory of the Emacs tree, like on Posix
432 if (SBYTES (dir
) > sizeof ("/i386/") - 1
433 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
435 dir
= Fexpand_file_name (build_string ("../.."), dir
);
436 #else /* !WINDOWSNT */
438 name
= Fexpand_file_name (Vinvocation_name
, dir
);
441 Lisp_Object tem
, lib_src_exists
;
442 Lisp_Object etc_exists
, info_exists
;
444 /* See if dir contains subdirs for use by Emacs.
445 Check for the ones that would exist in a build directory,
446 not including lisp and info. */
447 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
448 lib_src_exists
= Ffile_exists_p (tem
);
451 /* MSDOS installations frequently remove lib-src, but we still
452 must set installation-directory, or else info won't find
453 its files (it uses the value of installation-directory). */
454 tem
= Fexpand_file_name (build_string ("info"), dir
);
455 info_exists
= Ffile_exists_p (tem
);
460 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
462 tem
= Fexpand_file_name (build_string ("etc"), dir
);
463 etc_exists
= Ffile_exists_p (tem
);
464 if (!NILP (etc_exists
))
466 Vinstallation_directory
467 = Ffile_name_as_directory (dir
);
472 /* See if dir's parent contains those subdirs. */
473 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
474 lib_src_exists
= Ffile_exists_p (tem
);
478 /* See the MSDOS commentary above. */
479 tem
= Fexpand_file_name (build_string ("../info"), dir
);
480 info_exists
= Ffile_exists_p (tem
);
485 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
487 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
488 etc_exists
= Ffile_exists_p (tem
);
489 if (!NILP (etc_exists
))
491 tem
= Fexpand_file_name (build_string (".."), dir
);
492 Vinstallation_directory
493 = Ffile_name_as_directory (tem
);
498 /* If the Emacs executable is actually a link,
499 next try the dir that the link points into. */
500 tem
= Ffile_symlink_p (name
);
503 name
= Fexpand_file_name (tem
, dir
);
504 dir
= Ffile_name_directory (name
);
511 Vcommand_line_args
= Qnil
;
513 for (i
= argc
- 1; i
>= 0; i
--)
515 if (i
== 0 || i
> skip_args
)
516 /* For the moment, we keep arguments as is in unibyte strings.
517 They are decoded in the function command-line after we know
518 locale-coding-system. */
520 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
524 unbind_to (count
, Qnil
);
527 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
528 doc
: /* Return the program name that was used to run Emacs.
529 Any directory names are omitted. */)
532 return Fcopy_sequence (Vinvocation_name
);
535 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
537 doc
: /* Return the directory name in which the Emacs executable was located. */)
540 return Fcopy_sequence (Vinvocation_directory
);
545 /* A valid but unlikely value for the TZ environment value.
546 It is OK (though a bit slower) if the user actually chooses this value. */
547 static char dump_tz
[] = "UtC0";
550 #ifndef ORDINARY_LINK
551 /* We don't include crtbegin.o and crtend.o in the link,
552 so these functions and variables might be missed.
553 Provide dummy definitions to avoid error.
554 (We don't have any real constructors or destructors.) */
557 /* Define a dummy function F. Declare F too, to pacify gcc
558 -Wmissing-prototypes. */
559 #define DEFINE_DUMMY_FUNCTION(f) \
560 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
562 #ifndef GCC_CTORS_IN_LIBC
563 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
564 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
565 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
566 /* GNU/Linux has a bug in its library; avoid an error. */
568 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
570 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
571 #endif /* GCC_CTORS_IN_LIBC */
572 DEFINE_DUMMY_FUNCTION (__main
)
573 #endif /* __GNUC__ */
574 #endif /* ORDINARY_LINK */
576 /* Test whether the next argument in ARGV matches SSTR or a prefix of
577 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
578 (the argument is supposed to have a value) store in *VALPTR either
579 the next argument or the portion of this one after the equal sign.
580 ARGV is read starting at position *SKIPPTR; this index is advanced
581 by the number of arguments used.
583 Too bad we can't just use getopt for all of this, but we don't have
584 enough information to do it right. */
587 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
588 int minlen
, char **valptr
, int *skipptr
)
594 /* Don't access argv[argc]; give up in advance. */
595 if (argc
<= *skipptr
+ 1)
598 arg
= argv
[*skipptr
+1];
601 if (strcmp (arg
, sstr
) == 0)
605 *valptr
= argv
[*skipptr
+2];
612 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
613 ? p
- arg
: strlen (arg
));
614 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
616 else if (valptr
== NULL
)
627 else if (argv
[*skipptr
+2] != NULL
)
629 *valptr
= argv
[*skipptr
+2];
639 #ifdef DOUG_LEA_MALLOC
641 /* malloc can be invoked even before main (e.g. by the dynamic
642 linker), so the dumped malloc state must be restored as early as
643 possible using this special hook. */
646 malloc_initialize_hook (void)
649 extern char **environ
;
654 if (!malloc_using_checking
)
655 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
656 ignored if the heap to be restored was constructed without
657 malloc checking. Can't use unsetenv, since that calls malloc. */
661 for (p
= environ
; p
&& *p
; p
++)
662 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
671 malloc_set_state (malloc_state_ptr
);
672 #ifndef XMALLOC_OVERRUN_CHECK
673 free (malloc_state_ptr
);
678 if (my_heap_start
== 0)
679 my_heap_start
= sbrk (0);
680 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
684 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
686 #endif /* DOUG_LEA_MALLOC */
691 main (int argc
, char **argv
)
696 char stack_bottom_variable
;
697 int do_initial_setlocale
;
699 #ifdef HAVE_SETRLIMIT
714 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
715 /* This is used by the Cygwin build. */
716 setenv ("G_SLICE", "always-malloc", 1);
722 extern char my_endbss
[];
723 extern char *my_endbss_static
;
725 if (my_heap_start
== 0)
726 my_heap_start
= sbrk (0);
728 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
732 #ifdef RUN_TIME_REMAP
734 run_time_remap (argv
[0]);
737 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
740 unexec_init_emacs_zone ();
743 sort_args (argc
, argv
);
745 while (argv
[argc
]) argc
++;
747 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
749 const char *version
, *copyright
;
752 Lisp_Object tem
, tem2
;
753 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
754 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
757 fprintf (stderr
, "Invalid value of `emacs-version'\n");
762 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
767 version
= SSDATA (tem
);
768 copyright
= SSDATA (tem2
);
773 version
= emacs_version
;
774 copyright
= emacs_copyright
;
776 printf ("GNU Emacs %s\n", version
);
777 printf ("%s\n", copyright
);
778 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
779 printf ("You may redistribute copies of Emacs\n");
780 printf ("under the terms of the GNU General Public License.\n");
781 printf ("For more information about these matters, ");
782 printf ("see the file named COPYING.\n");
786 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
787 if (chdir (ch_to_dir
) == -1)
789 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
790 argv
[0], ch_to_dir
, strerror (errno
));
795 #ifdef HAVE_PERSONALITY_LINUX32
797 && (strcmp (argv
[argc
-1], "dump") == 0
798 || strcmp (argv
[argc
-1], "bootstrap") == 0)
799 && ! getenv ("EMACS_HEAP_EXEC"))
801 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
802 /* Set this so we only do this once. */
805 /* A flag to turn off address randomization which is introduced
806 in linux kernel shipped with fedora core 4 */
807 #define ADD_NO_RANDOMIZE 0x0040000
808 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
809 #undef ADD_NO_RANDOMIZE
811 execvp (argv
[0], argv
);
813 /* If the exec fails, try to dump anyway. */
816 #endif /* HAVE_PERSONALITY_LINUX32 */
818 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
819 /* Extend the stack space available.
820 Don't do that if dumping, since some systems (e.g. DJGPP)
821 might define a smaller stack limit at that time. */
824 && (!noninteractive
|| initialized
)
826 && !getrlimit (RLIMIT_STACK
, &rlim
))
829 extern size_t re_max_failures
;
830 /* Approximate the amount regex.c needs per unit of re_max_failures. */
831 int ratio
= 20 * sizeof (char *);
832 /* Then add 33% to cover the size of the smaller stacks that regex.c
833 successively allocates and discards, on its way to the maximum. */
835 /* Add in some extra to cover
836 what we're likely to use for other reasons. */
837 newlim
= re_max_failures
* ratio
+ 200000;
839 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
840 stack allocation routine for new process that the allocation
841 fails if stack limit is not on page boundary. So, round up the
842 new limit to page boundary. */
843 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
845 if (newlim
> rlim
.rlim_max
)
847 newlim
= rlim
.rlim_max
;
848 /* Don't let regex.c overflow the stack we have. */
849 re_max_failures
= (newlim
- 200000) / ratio
;
851 if (rlim
.rlim_cur
< newlim
)
852 rlim
.rlim_cur
= newlim
;
854 setrlimit (RLIMIT_STACK
, &rlim
);
856 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
858 /* Record (approximately) where the stack begins. */
859 stack_bottom
= &stack_bottom_variable
;
863 #ifndef SYSTEM_MALLOC
864 /* Arrange to get warning messages as memory fills up. */
865 memory_warnings (0, malloc_warning
);
867 /* Call malloc at least once, to run the initial __malloc_hook.
868 Also call realloc and free for consistency. */
869 free (realloc (malloc (4), 4));
872 /* Arrange to disable interrupt input inside malloc etc. */
873 uninterrupt_malloc ();
874 # endif /* not SYNC_INPUT */
875 #endif /* not SYSTEM_MALLOC */
877 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
878 main_thread
= pthread_self ();
879 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
881 #if defined (MSDOS) || defined (WINDOWSNT)
882 /* We do all file input/output as binary files. When we need to translate
883 newlines, we do that manually. */
885 #endif /* MSDOS || WINDOWSNT */
888 if (!isatty (fileno (stdin
)))
889 setmode (fileno (stdin
), O_BINARY
);
890 if (!isatty (fileno (stdout
)))
893 setmode (fileno (stdout
), O_BINARY
);
897 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
898 The build procedure uses this while dumping, to ensure that the
899 dumped Emacs does not have its system locale tables initialized,
900 as that might cause screwups when the dumped Emacs starts up. */
902 char *lc_all
= getenv ("LC_ALL");
903 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
906 /* Set locale now, so that initial error messages are localized properly.
907 fixup_locale must wait until later, since it builds strings. */
908 if (do_initial_setlocale
)
909 setlocale (LC_ALL
, "");
911 inhibit_window_system
= 0;
913 /* Handle the -t switch, which specifies filename to use as terminal. */
917 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
922 result
= emacs_open (term
, O_RDWR
, 0);
923 if (result
< 0 || dup (0) < 0)
925 char *errstring
= strerror (errno
);
926 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
931 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
934 fprintf (stderr
, "Using %s\n", term
);
935 #ifdef HAVE_WINDOW_SYSTEM
936 inhibit_window_system
= 1; /* -t => -nw */
943 /* Command line option --no-windows is deprecated and thus not mentioned
944 in the manual and usage information. */
945 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
946 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
947 inhibit_window_system
= 1;
949 /* Handle the -batch switch, which means don't do interactive display. */
951 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
954 Vundo_outer_limit
= Qnil
;
956 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
958 noninteractive
= 1; /* Set batch mode. */
959 /* Convert --script to -scriptload, un-skip it, and sort again
960 so that it will be handled in proper sequence. */
961 /* FIXME broken for --script=FILE - is that supposed to work? */
962 argv
[skip_args
- 1] = (char *) "-scriptload";
964 sort_args (argc
, argv
);
967 /* Handle the --help option, which gives a usage message. */
968 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
970 printf (USAGE1
, argv
[0], USAGE2
);
976 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
977 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
982 /* Start as a daemon: fork a new child process which will run the
983 rest of the initialization code, then exit.
985 Detaching a daemon requires the following steps:
989 - close the tty file-descriptors
991 We only want to do the last 2 steps once the daemon is ready to
992 serve requests, i.e. after loading .emacs (initialization).
993 OTOH initialization may start subprocesses (e.g. ispell) and these
994 should be run from the proper process (the one that will end up
995 running as daemon) and with the proper "session id" in order for
996 them to keep working after detaching, so fork and setsid need to be
997 performed before initialization.
999 We want to avoid exiting before the server socket is ready, so
1000 use a pipe for synchronization. The parent waits for the child
1001 to close its end of the pipe (using `daemon-initialized')
1003 if (pipe (daemon_pipe
) == -1)
1005 fprintf (stderr
, "Cannot pipe!\n");
1009 #ifndef NS_IMPL_COCOA
1011 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1012 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1013 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1016 #else /* NS_IMPL_COCOA */
1017 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1018 forked process: http://developer.apple.com/ReleaseNotes/
1019 CoreFoundation/CoreFoundation.html)
1020 We mark being in the exec'd process by a daemon name argument of
1021 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1022 NAME is the original daemon name, if any. */
1023 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1024 f
= fork (); /* in orig */
1026 f
= 0; /* in exec'd */
1027 #endif /* NS_IMPL_COCOA */
1033 /* Close unused writing end of the pipe. */
1034 close (daemon_pipe
[1]);
1036 /* Just wait for the child to close its end of the pipe. */
1039 retval
= read (daemon_pipe
[0], &buf
, 1);
1041 while (retval
== -1 && errno
== EINTR
);
1045 fprintf (stderr
, "Error reading status from child\n");
1048 else if (retval
== 0)
1050 fprintf (stderr
, "Error: server did not start correctly\n");
1054 close (daemon_pipe
[0]);
1059 fprintf (stderr
, "Cannot fork!\n");
1063 #ifdef NS_IMPL_COCOA
1065 /* In orig process, forked as child, OR in exec'd. */
1066 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1067 { /* In orig, child: now exec w/special daemon name. */
1070 snprintf (fdStr
, sizeof fdStr
,
1071 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1072 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1074 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1076 fprintf (stderr
, "daemon: child name too long\n");
1080 argv
[skip_args
] = fdStr
;
1082 execv (argv
[0], argv
);
1083 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1087 /* In exec'd: parse special dname into pipe and name info. */
1088 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1089 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1091 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1094 dname_arg2
[0] = '\0';
1095 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1097 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1099 #endif /* NS_IMPL_COCOA */
1102 daemon_name
= xstrdup (dname_arg
);
1103 /* Close unused reading end of the pipe. */
1104 close (daemon_pipe
[0]);
1105 /* Make sure that the used end of the pipe is closed on exec, so
1106 that it is not accessible to programs started from .emacs. */
1107 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1113 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1118 if (! noninteractive
)
1120 #if defined (USG5) && defined (INTERRUPT_INPUT)
1123 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1125 extern void malloc_enable_thread (void);
1127 malloc_enable_thread ();
1134 /* Don't catch SIGHUP if dumping. */
1141 sigblock (sigmask (SIGHUP
));
1142 /* In --batch mode, don't catch SIGHUP if already ignored.
1143 That makes nohup work. */
1144 if (! noninteractive
1145 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1146 signal (SIGHUP
, fatal_error_signal
);
1147 sigunblock (sigmask (SIGHUP
));
1152 ! noninteractive
|| initialized
1158 /* Don't catch these signals in batch mode if dumping.
1159 On some machines, this sets static data that would make
1160 signal fail to work right when the dumped Emacs is run. */
1161 signal (SIGQUIT
, fatal_error_signal
);
1162 signal (SIGILL
, fatal_error_signal
);
1163 signal (SIGTRAP
, fatal_error_signal
);
1165 add_user_signal (SIGUSR1
, "sigusr1");
1168 add_user_signal (SIGUSR2
, "sigusr2");
1171 signal (SIGABRT
, fatal_error_signal
);
1174 signal (SIGHWE
, fatal_error_signal
);
1177 signal (SIGPRE
, fatal_error_signal
);
1180 signal (SIGORE
, fatal_error_signal
);
1183 signal (SIGUME
, fatal_error_signal
);
1186 signal (SIGDLK
, fatal_error_signal
);
1189 signal (SIGCPULIM
, fatal_error_signal
);
1192 /* This is missing on some systems - OS/2, for example. */
1193 signal (SIGIOT
, fatal_error_signal
);
1196 signal (SIGEMT
, fatal_error_signal
);
1198 signal (SIGFPE
, fatal_error_signal
);
1200 signal (SIGBUS
, fatal_error_signal
);
1202 signal (SIGSEGV
, fatal_error_signal
);
1204 signal (SIGSYS
, fatal_error_signal
);
1206 /* May need special treatment on MS-Windows. See
1207 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1208 Please update the doc of kill-emacs, kill-emacs-hook, and
1209 NEWS if you change this.
1211 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1212 signal (SIGTERM
, fatal_error_signal
);
1214 signal (SIGXCPU
, fatal_error_signal
);
1217 signal (SIGXFSZ
, fatal_error_signal
);
1218 #endif /* SIGXFSZ */
1221 /* This just means available memory is getting low. */
1222 signal (SIGDANGER
, memory_warning_signal
);
1226 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1227 signal (SIGXCPU
, fatal_error_signal
);
1228 signal (SIGIOINT
, fatal_error_signal
);
1229 signal (SIGGRANT
, fatal_error_signal
);
1230 signal (SIGRETRACT
, fatal_error_signal
);
1231 signal (SIGSOUND
, fatal_error_signal
);
1232 signal (SIGMSG
, fatal_error_signal
);
1236 noninteractive1
= noninteractive
;
1238 /* Perform basic initializations (not merely interning symbols). */
1245 init_charset_once ();
1246 init_coding_once ();
1247 init_syntax_once (); /* Create standard syntax table. */
1248 init_category_once (); /* Create standard category table. */
1249 /* Must be done before init_buffer. */
1250 init_casetab_once ();
1251 init_buffer_once (); /* Create buffer table and some buffers. */
1252 init_minibuf_once (); /* Create list of minibuffers. */
1253 /* Must precede init_window_once. */
1255 /* Call syms_of_xfaces before init_window_once because that
1256 function creates Vterminal_frame. Termcap frames now use
1257 faces, and the face implementation uses some symbols as
1260 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1261 be better to arrange things not to have this dependency. */
1263 /* Call syms_of_keyboard before init_window_once because
1264 keyboard sets up symbols that include some face names that
1265 the X support will want to use. This can happen when
1266 CANNOT_DUMP is defined. */
1267 syms_of_keyboard ();
1269 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1272 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1274 /* Before syms_of_coding because it initializes Qcharsetp. */
1276 /* Before init_window_once, because it sets up the
1277 Vcoding_system_hash_table. */
1278 syms_of_coding (); /* This should be after syms_of_fileio. */
1280 init_window_once (); /* Init the window system. */
1281 #ifdef HAVE_WINDOW_SYSTEM
1282 init_fringe_once (); /* Swap bitmaps if necessary. */
1283 #endif /* HAVE_WINDOW_SYSTEM */
1288 if (do_initial_setlocale
)
1291 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1292 Vsystem_time_locale
= Vprevious_system_time_locale
;
1298 running_asynch_code
= 0;
1301 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1304 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1307 ns_pool
= ns_alloc_autorelease_pool ();
1308 if (!noninteractive
)
1310 #ifdef NS_IMPL_COCOA
1311 if (skip_args
< argc
)
1313 /* FIXME: Do the right thing if getenv returns NULL, or if
1315 if (!strncmp (argv
[skip_args
], "-psn", 4))
1318 chdir (getenv ("HOME"));
1320 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1323 chdir (getenv ("HOME"));
1328 #endif /* HAVE_NS */
1330 #ifdef HAVE_X_WINDOWS
1331 /* Stupid kludge to catch command-line display spec. We can't
1332 handle this argument entirely in window system dependent code
1333 because we don't even know which window system dependent code
1334 to run until we've recognized this argument. */
1336 char *displayname
= 0;
1337 int count_before
= skip_args
;
1339 /* Skip any number of -d options, but only use the last one. */
1342 int count_before_this
= skip_args
;
1344 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1346 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1351 count_before
= count_before_this
;
1354 /* If we have the form --display=NAME,
1355 convert it into -d name.
1356 This requires inserting a new element into argv. */
1357 if (displayname
&& count_before
< skip_args
)
1359 if (skip_args
== count_before
+ 1)
1361 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1362 (argc
- (count_before
+ 2)) * sizeof *argv
);
1363 argv
[count_before
+ 2] = displayname
;
1366 argv
[count_before
+ 1] = (char *) "-d";
1371 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1372 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1376 /* Don't actually discard this arg. */
1377 skip_args
= count_before
;
1379 #else /* !HAVE_X_WINDOWS */
1382 int count_before
= skip_args
;
1384 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1385 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1388 skip_args
= count_before
;
1392 /* argmatch must not be used after here,
1393 except when building temacs
1394 because the -d argument has not been skipped in skip_args. */
1397 /* Call early 'cause init_environment needs it. */
1399 /* Set defaults for several environment variables. */
1401 init_environment (argc
, argv
, skip_args
);
1408 /* Initialize environment from registry settings. */
1409 init_environment (argv
);
1410 init_ntproc (); /* must precede init_editfns. */
1413 /* Initialize and GC-protect Vinitial_environment and
1414 Vprocess_environment before set_initial_environment fills them
1417 syms_of_callproc ();
1418 /* egetenv is a pretty low-level facility, which may get called in
1419 many circumstances; it seems flimsy to put off initializing it
1420 until calling init_callproc. Do not do it when dumping. */
1421 if (initialized
|| ((strcmp (argv
[argc
-1], "dump") != 0
1422 && strcmp (argv
[argc
-1], "bootstrap") != 0)))
1423 set_initial_environment ();
1425 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1426 if this is not done. Do it after set_global_environment so that we
1427 don't pollute Vglobal_environment. */
1428 /* Setting LANG here will defeat the startup locale processing... */
1433 init_buffer (); /* Init default directory of main buffer. */
1435 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1436 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1440 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1441 Lisp_Object old_log_max
;
1442 old_log_max
= Vmessage_log_max
;
1443 XSETFASTINT (Vmessage_log_max
, 0);
1444 message_dolog ("", 0, 1, 0);
1445 Vmessage_log_max
= old_log_max
;
1448 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1451 /* Check to see if Emacs has been installed correctly. */
1452 check_windows_init_file ();
1455 /* Intern the names of all standard functions and variables;
1456 define standard keys. */
1460 /* The basic levels of Lisp must come first. Note that
1461 syms_of_data and some others have already been called. */
1467 syms_of_floatfns ();
1470 syms_of_bytecode ();
1472 syms_of_casefiddle ();
1474 syms_of_category ();
1476 syms_of_character ();
1483 syms_of_filelock ();
1486 /* syms_of_keymap (); */
1494 syms_of_terminal ();
1500 syms_of_textprop ();
1501 syms_of_composite ();
1504 #endif /* WINDOWSNT */
1508 #ifdef HAVE_WINDOW_SYSTEM
1511 #endif /* HAVE_WINDOW_SYSTEM */
1512 #ifdef HAVE_X_WINDOWS
1517 #ifdef HAVE_XWIDGETS
1520 syms_of_xsettings ();
1527 #endif /* HAVE_X_WINDOWS */
1538 syms_of_w32select ();
1541 #endif /* HAVE_NTGUI */
1547 syms_of_win16select ();
1554 syms_of_nsselect ();
1556 #endif /* HAVE_NS */
1563 syms_of_dbusbind ();
1564 #endif /* HAVE_DBUS */
1568 #endif /* WINDOWSNT */
1570 keys_of_casefiddle ();
1573 keys_of_keyboard ();
1579 /* Initialization that must be done even if the global variable
1580 initialized is non zero. */
1582 globals_of_w32font ();
1583 globals_of_w32fns ();
1584 globals_of_w32menu ();
1585 globals_of_w32select ();
1586 #endif /* HAVE_NTGUI */
1591 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1592 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1593 init_keyboard (); /* This too must precede init_sys_modes. */
1594 if (!noninteractive
)
1595 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1597 #ifdef HAVE_WINDOW_SYSTEM
1599 #endif /* HAVE_WINDOW_SYSTEM */
1608 /* Handle -l loadup, args passed by Makefile. */
1609 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1610 Vtop_level
= Fcons (intern_c_string ("load"),
1611 Fcons (build_string (file
), Qnil
));
1612 /* Unless next switch is -nl, load "loadup.el" first thing. */
1614 Vtop_level
= Fcons (intern_c_string ("load"),
1615 Fcons (build_string ("loadup.el"), Qnil
));
1622 /* If the execution TZ happens to be the same as the dump TZ,
1623 change it to some other value and then change it back,
1624 to force the underlying implementation to reload the TZ info.
1625 This is needed on implementations that load TZ info from files,
1626 since the TZ file contents may differ between dump and execution. */
1627 char *tz
= getenv ("TZ");
1628 if (tz
&& !strcmp (tz
, dump_tz
))
1638 /* Set up for profiling. This is known to work on FreeBSD,
1639 GNU/Linux and MinGW. It might work on some other systems too.
1640 Give it a try and tell us if it works on your system. To compile
1641 for profiling, use the configure option --enable-profiling. */
1642 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1647 extern unsigned char etext
asm ("etext");
1653 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1662 #ifdef LOCALTIME_CACHE
1663 /* Some versions of localtime have a bug. They cache the value of the time
1664 zone rather than looking it up every time. Since localtime() is
1665 called to bolt the undumping time into the undumped emacs, this
1666 results in localtime ignoring the TZ environment variable.
1667 This flushes the new TZ value into localtime. */
1669 #endif /* defined (LOCALTIME_CACHE) */
1671 /* Enter editor command loop. This never returns. */
1677 /* Sort the args so we can find the most important ones
1678 at the beginning of argv. */
1680 /* First, here's a table of all the standard options. */
1682 struct standard_args
1685 const char *longname
;
1690 static const struct standard_args standard_args
[] =
1692 { "-version", "--version", 150, 0 },
1693 { "-chdir", "--chdir", 130, 1 },
1694 { "-t", "--terminal", 120, 1 },
1695 { "-nw", "--no-window-system", 110, 0 },
1696 { "-nw", "--no-windows", 110, 0 },
1697 { "-batch", "--batch", 100, 0 },
1698 { "-script", "--script", 100, 1 },
1699 { "-daemon", "--daemon", 99, 0 },
1700 { "-help", "--help", 90, 0 },
1701 { "-nl", "--no-loadup", 70, 0 },
1702 { "-nsl", "--no-site-lisp", 65, 0 },
1703 /* -d must come last before the options handled in startup.el. */
1704 { "-d", "--display", 60, 1 },
1705 { "-display", 0, 60, 1 },
1706 /* Now for the options handled in `command-line' (startup.el). */
1707 /* (Note that to imply -nsl, -Q is partially handled here.) */
1708 { "-Q", "--quick", 55, 0 },
1709 { "-quick", 0, 55, 0 },
1710 { "-q", "--no-init-file", 50, 0 },
1711 { "-no-init-file", 0, 50, 0 },
1712 { "-no-site-file", "--no-site-file", 40, 0 },
1713 { "-u", "--user", 30, 1 },
1714 { "-user", 0, 30, 1 },
1715 { "-debug-init", "--debug-init", 20, 0 },
1716 { "-iconic", "--iconic", 15, 0 },
1717 { "-D", "--basic-display", 12, 0},
1718 { "-basic-display", 0, 12, 0},
1719 { "-nbc", "--no-blinking-cursor", 12, 0 },
1720 /* Now for the options handled in `command-line-1' (startup.el). */
1721 { "-nbi", "--no-bitmap-icon", 10, 0 },
1722 { "-bg", "--background-color", 10, 1 },
1723 { "-background", 0, 10, 1 },
1724 { "-fg", "--foreground-color", 10, 1 },
1725 { "-foreground", 0, 10, 1 },
1726 { "-bd", "--border-color", 10, 1 },
1727 { "-bw", "--border-width", 10, 1 },
1728 { "-ib", "--internal-border", 10, 1 },
1729 { "-ms", "--mouse-color", 10, 1 },
1730 { "-cr", "--cursor-color", 10, 1 },
1731 { "-fn", "--font", 10, 1 },
1732 { "-font", 0, 10, 1 },
1733 { "-fs", "--fullscreen", 10, 0 },
1734 { "-fw", "--fullwidth", 10, 0 },
1735 { "-fh", "--fullheight", 10, 0 },
1736 { "-mm", "--maximized", 10, 0 },
1737 { "-g", "--geometry", 10, 1 },
1738 { "-geometry", 0, 10, 1 },
1739 { "-T", "--title", 10, 1 },
1740 { "-title", 0, 10, 1 },
1741 { "-name", "--name", 10, 1 },
1742 { "-xrm", "--xrm", 10, 1 },
1743 { "-parent-id", "--parent-id", 10, 1 },
1744 { "-r", "--reverse-video", 5, 0 },
1746 { "-reverse", 0, 5, 0 },
1747 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1748 { "-vb", "--vertical-scroll-bars", 5, 0 },
1749 { "-color", "--color", 5, 0},
1750 { "-no-splash", "--no-splash", 3, 0 },
1751 { "-no-desktop", "--no-desktop", 3, 0 },
1753 { "-NSAutoLaunch", 0, 5, 1 },
1754 { "-NXAutoLaunch", 0, 5, 1 },
1755 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1756 { "-_NSMachLaunch", 0, 85, 1 },
1757 { "-MachLaunch", 0, 85, 1 },
1758 { "-macosx", 0, 85, 0 },
1759 { "-NSHost", 0, 85, 1 },
1761 /* These have the same priority as ordinary file name args,
1762 so they are not reordered with respect to those. */
1763 { "-L", "--directory", 0, 1 },
1764 { "-directory", 0, 0, 1 },
1765 { "-l", "--load", 0, 1 },
1766 { "-load", 0, 0, 1 },
1767 /* This has no longname, because using --scriptload confuses sort_args,
1768 because then the --script long option seems to match twice; ie
1769 you can't have a long option which is a prefix of another long
1770 option. In any case, this is entirely an internal option. */
1771 { "-scriptload", NULL
, 0, 1 },
1772 { "-f", "--funcall", 0, 1 },
1773 { "-funcall", 0, 0, 1 },
1774 { "-eval", "--eval", 0, 1 },
1775 { "-execute", "--execute", 0, 1 },
1776 { "-find-file", "--find-file", 0, 1 },
1777 { "-visit", "--visit", 0, 1 },
1778 { "-file", "--file", 0, 1 },
1779 { "-insert", "--insert", 0, 1 },
1781 { "-NXOpen", 0, 0, 1 },
1782 { "-NXOpenTemp", 0, 0, 1 },
1783 { "-NSOpen", 0, 0, 1 },
1784 { "-NSOpenTemp", 0, 0, 1 },
1785 { "-GSFilePath", 0, 0, 1 },
1787 /* This should be processed after ordinary file name args and the like. */
1788 { "-kill", "--kill", -10, 0 },
1791 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1792 so that the highest priority ones come first.
1793 Do not change the order of elements of equal priority.
1794 If an option takes an argument, keep it and its argument together.
1796 If an option that takes no argument appears more
1797 than once, eliminate all but one copy of it. */
1800 sort_args (int argc
, char **argv
)
1802 char **new = xmalloc (argc
* sizeof *new);
1803 /* For each element of argv,
1804 the corresponding element of options is:
1805 0 for an option that takes no arguments,
1806 1 for an option that takes one argument, etc.
1807 -1 for an ordinary non-option argument. */
1808 int *options
= xnmalloc (argc
, sizeof *options
);
1809 int *priority
= xnmalloc (argc
, sizeof *priority
);
1811 int incoming_used
= 1;
1815 /* Categorize all the options,
1816 and figure out which argv elts are option arguments. */
1817 for (from
= 1; from
< argc
; from
++)
1821 if (argv
[from
][0] == '-')
1825 /* If we have found "--", don't consider
1826 any more arguments as options. */
1827 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1829 /* Leave the "--", and everything following it, at the end. */
1830 for (; from
< argc
; from
++)
1832 priority
[from
] = -100;
1838 /* Look for a match with a known old-fashioned option. */
1839 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1840 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1842 options
[from
] = standard_args
[i
].nargs
;
1843 priority
[from
] = standard_args
[i
].priority
;
1844 if (from
+ standard_args
[i
].nargs
>= argc
)
1845 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1846 from
+= standard_args
[i
].nargs
;
1850 /* Look for a match with a known long option.
1851 MATCH is -1 if no match so far, -2 if two or more matches so far,
1852 >= 0 (the table index of the match) if just one match so far. */
1853 if (argv
[from
][1] == '-')
1855 char const *equals
= strchr (argv
[from
], '=');
1857 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1862 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1863 if (standard_args
[i
].longname
1864 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1873 /* If we found exactly one match, use that. */
1876 options
[from
] = standard_args
[match
].nargs
;
1877 priority
[from
] = standard_args
[match
].priority
;
1878 /* If --OPTION=VALUE syntax is used,
1879 this option uses just one argv element. */
1882 if (from
+ options
[from
] >= argc
)
1883 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1884 from
+= options
[from
];
1886 /* FIXME When match < 0, shouldn't there be some error,
1887 or at least indication to the user that there was a
1894 /* Copy the arguments, in order of decreasing priority, to NEW. */
1896 while (incoming_used
< argc
)
1899 int best_priority
= -9999;
1901 /* Find the highest priority remaining option.
1902 If several have equal priority, take the first of them. */
1903 for (from
= 1; from
< argc
; from
++)
1905 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1907 best_priority
= priority
[from
];
1910 /* Skip option arguments--they are tied to the options. */
1911 if (options
[from
] > 0)
1912 from
+= options
[from
];
1918 /* Copy the highest priority remaining option, with its args, to NEW.
1919 Unless it is a duplicate of the previous one. */
1920 if (! (options
[best
] == 0
1921 && ! strcmp (new[to
- 1], argv
[best
])))
1923 new[to
++] = argv
[best
];
1924 for (i
= 0; i
< options
[best
]; i
++)
1925 new[to
++] = argv
[best
+ i
+ 1];
1928 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1930 /* Clear out this option in ARGV. */
1932 for (i
= 0; i
< options
[best
]; i
++)
1933 argv
[best
+ i
+ 1] = 0;
1936 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1940 memcpy (argv
, new, sizeof (char *) * argc
);
1947 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1948 doc
: /* Exit the Emacs job and kill it.
1949 If ARG is an integer, return ARG as the exit program code.
1950 If ARG is a string, stuff it as keyboard input.
1952 This function is called upon receipt of the signals SIGTERM
1953 or SIGHUP, and upon SIGINT in batch mode.
1955 The value of `kill-emacs-hook', if not void,
1956 is a list of functions (of no args),
1957 all of which are called before Emacs is actually killed. */)
1960 struct gcpro gcpro1
;
1969 hook
= intern ("kill-emacs-hook");
1970 Frun_hooks (1, &hook
);
1974 #ifdef HAVE_X_WINDOWS
1975 /* Transfer any clipboards we own to the clipboard manager. */
1976 x_clipboard_manager_save_all ();
1979 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1982 ns_release_autorelease_pool (ns_pool
);
1985 /* If we have an auto-save list file,
1986 kill it because we are exiting Emacs deliberately (not crashing).
1987 Do it after shut_down_emacs, which does an auto-save. */
1988 if (STRINGP (Vauto_save_list_file_name
))
1989 unlink (SSDATA (Vauto_save_list_file_name
));
1992 exit_code
= (XINT (arg
) < 0
1993 ? XINT (arg
) | INT_MIN
1994 : XINT (arg
) & INT_MAX
);
1995 else if (noninteractive
&& (fflush (stdout
) || ferror (stdout
)))
1996 exit_code
= EXIT_FAILURE
;
1998 exit_code
= EXIT_SUCCESS
;
2003 /* Perform an orderly shutdown of Emacs. Autosave any modified
2004 buffers, kill any child processes, clean up the terminal modes (if
2005 we're in the foreground), and other stuff like that. Don't perform
2006 any redisplay; this may be called when Emacs is shutting down in
2007 the background, or after its X connection has died.
2009 If SIG is a signal number, print a message for it.
2011 This is called by fatal signal handlers, X protocol error handlers,
2015 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2017 /* Prevent running of hooks from now on. */
2020 /* Don't update display from now on. */
2021 Vinhibit_redisplay
= Qt
;
2023 /* If we are controlling the terminal, reset terminal modes. */
2026 int pgrp
= EMACS_GETPGRP (0);
2027 int tpgrp
= tcgetpgrp (0);
2028 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2030 reset_all_sys_modes ();
2031 if (sig
&& sig
!= SIGTERM
)
2032 fprintf (stderr
, "Fatal error (%d)", sig
);
2037 reset_all_sys_modes ();
2040 stuff_buffered_input (stuff
);
2042 inhibit_sentinels
= 1;
2043 kill_buffer_processes (Qnil
);
2044 Fdo_auto_save (Qt
, Qnil
);
2046 #ifdef CLASH_DETECTION
2047 unlock_all_files ();
2050 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2051 #ifdef HAVE_X_WINDOWS
2052 /* It's not safe to call intern here. Maybe we are crashing. */
2053 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2054 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2055 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2057 Fx_close_current_connection ();
2058 #endif /* HAVE_X_WINDOWS */
2062 /* There is a tendency for a SIGIO signal to arrive within exit,
2063 and cause a SIGHUP because the input descriptor is already closed. */
2065 signal (SIGIO
, SIG_IGN
);
2072 /* Do this only if terminating normally, we want glyph matrices
2073 etc. in a core dump. */
2074 if (sig
== 0 || sig
== SIGTERM
)
2076 check_glyph_memory ();
2077 check_message_stack ();
2085 ns_term_shutdown (sig
);
2089 xml_cleanup_parser ();
2099 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2100 doc
: /* Dump current state of Emacs into executable file FILENAME.
2101 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2102 This is used in the file `loadup.el' when building Emacs.
2104 You must run Emacs in batch mode in order to dump it. */)
2105 (Lisp_Object filename
, Lisp_Object symfile
)
2109 ptrdiff_t count
= SPECPDL_INDEX ();
2113 if (! noninteractive
)
2114 error ("Dumping Emacs works only in batch mode");
2118 /* Warn if the gap between BSS end and heap start is larger than this. */
2119 # define MAX_HEAP_BSS_DIFF (1024*1024)
2121 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2123 fprintf (stderr
, "**************************************************\n");
2124 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2125 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2127 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2128 fprintf (stderr
, "fail because of this. See the section about\n");
2129 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2130 fprintf (stderr
, "**************************************************\n");
2132 #endif /* GNU_LINUX */
2134 /* Bind `command-line-processed' to nil before dumping,
2135 so that the dumped Emacs will process its command line
2136 and set up to work with X windows if appropriate. */
2137 symbol
= intern ("command-line-processed");
2138 specbind (symbol
, Qnil
);
2140 CHECK_STRING (filename
);
2141 filename
= Fexpand_file_name (filename
, Qnil
);
2142 if (!NILP (symfile
))
2144 CHECK_STRING (symfile
);
2145 if (SCHARS (symfile
))
2146 symfile
= Fexpand_file_name (symfile
, Qnil
);
2150 Vpurify_flag
= Qnil
;
2153 set_time_zone_rule (dump_tz
);
2154 #ifndef LOCALTIME_CACHE
2155 /* Force a tz reload, since set_time_zone_rule doesn't. */
2161 /* Tell malloc where start of impure now is. */
2162 /* Also arrange for warnings when nearly out of space. */
2163 #ifndef SYSTEM_MALLOC
2165 /* On Windows, this was done before dumping, and that once suffices.
2166 Meanwhile, my_edata is not valid on Windows. */
2168 extern char my_edata
[];
2169 memory_warnings (my_edata
, malloc_warning
);
2171 #endif /* not WINDOWSNT */
2172 #if defined (HAVE_PTHREAD) && !defined SYNC_INPUT
2173 /* Pthread may call malloc before main, and then we will get an endless
2174 loop, because pthread_self (see alloc.c) calls malloc the first time
2175 it is called on some systems. */
2176 reset_malloc_hooks ();
2178 #endif /* not SYSTEM_MALLOC */
2179 #ifdef DOUG_LEA_MALLOC
2180 malloc_state_ptr
= malloc_get_state ();
2183 #ifdef USE_MMAP_FOR_BUFFERS
2186 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2187 #ifdef USE_MMAP_FOR_BUFFERS
2190 #ifdef DOUG_LEA_MALLOC
2191 free (malloc_state_ptr
);
2196 return unbind_to (count
, Qnil
);
2199 #endif /* not CANNOT_DUMP */
2202 /* Recover from setlocale (LC_ALL, ""). */
2206 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2207 so that numbers are read and printed properly for Emacs Lisp. */
2208 setlocale (LC_NUMERIC
, "C");
2211 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2214 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2216 if (! EQ (*plocale
, desired_locale
))
2218 *plocale
= desired_locale
;
2219 setlocale (category
, (STRINGP (desired_locale
)
2220 ? SSDATA (desired_locale
)
2225 /* Set system time locale to match Vsystem_time_locale, if possible. */
2227 synchronize_system_time_locale (void)
2229 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2230 Vsystem_time_locale
);
2233 /* Set system messages locale to match Vsystem_messages_locale, if
2236 synchronize_system_messages_locale (void)
2239 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2240 Vsystem_messages_locale
);
2243 #endif /* HAVE_SETLOCALE */
2247 decode_env_path (const char *evarname
, const char *defalt
)
2249 const char *path
, *p
;
2250 Lisp_Object lpath
, element
, tem
;
2253 const char *emacs_dir
= egetenv ("emacs_dir");
2254 static const char *emacs_dir_env
= "%emacs_dir%/";
2255 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2258 /* It's okay to use getenv here, because this function is only used
2259 to initialize variables when Emacs starts up, and isn't called
2262 path
= getenv (evarname
);
2273 /* Ensure values from the environment use the proper directory separator. */
2276 char *path_copy
= alloca (strlen (path
) + 1);
2277 strcpy (path_copy
, path
);
2278 dostounix_filename (path_copy
);
2285 p
= strchr (path
, SEPCHAR
);
2287 p
= path
+ strlen (path
);
2288 element
= (p
- path
? make_string (path
, p
- path
)
2289 : build_string ("."));
2291 /* Relative file names in the default path are interpreted as
2292 being relative to $emacs_dir. */
2293 if (emacs_dir
&& defaulted
2294 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2295 element
= Fexpand_file_name (Fsubstring (element
,
2296 make_number (emacs_dir_len
),
2298 build_string (emacs_dir
));
2301 /* Add /: to the front of the name
2302 if it would otherwise be treated as magic. */
2303 tem
= Ffind_file_name_handler (element
, Qt
);
2305 /* However, if the handler says "I'm safe",
2306 don't bother adding /:. */
2310 prop
= Fget (tem
, intern ("safe-magic"));
2316 element
= concat2 (build_string ("/:"), element
);
2318 lpath
= Fcons (element
, lpath
);
2324 return Fnreverse (lpath
);
2327 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2328 doc
: /* Return non-nil if the current emacs process is a daemon.
2329 If the daemon was given a name argument, return that name. */)
2334 return build_string (daemon_name
);
2341 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2342 doc
: /* Mark the Emacs daemon as being initialized.
2343 This finishes the daemonization process by doing the other half of detaching
2344 from the parent process and its tty file descriptors. */)
2351 error ("This function can only be called if emacs is run as a daemon");
2353 if (daemon_pipe
[1] < 0)
2354 error ("The daemon has already been initialized");
2356 if (NILP (Vafter_init_time
))
2357 error ("This function can only be called after loading the init files");
2359 /* Get rid of stdin, stdout and stderr. */
2360 nfd
= open ("/dev/null", O_RDWR
);
2362 err
|= dup2 (nfd
, 0) < 0;
2363 err
|= dup2 (nfd
, 1) < 0;
2364 err
|= dup2 (nfd
, 2) < 0;
2365 err
|= close (nfd
) != 0;
2367 /* Closing the pipe will notify the parent that it can exit.
2368 FIXME: In case some other process inherited the pipe, closing it here
2369 won't notify the parent because it's still open elsewhere, so we
2370 additionally send a byte, just to make sure the parent really exits.
2371 Instead, we should probably close the pipe in start-process and
2372 call-process to make sure the pipe is never inherited by
2374 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2375 err
|= close (daemon_pipe
[1]) != 0;
2376 /* Set it to an invalid value so we know we've already run this function. */
2377 daemon_pipe
[1] = -1;
2380 error ("I/O error during daemon initialization");
2385 syms_of_emacs (void)
2387 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2388 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2389 DEFSYM (Qkill_emacs
, "kill-emacs");
2392 defsubr (&Sdump_emacs
);
2395 defsubr (&Skill_emacs
);
2397 defsubr (&Sinvocation_name
);
2398 defsubr (&Sinvocation_directory
);
2399 defsubr (&Sdaemonp
);
2400 defsubr (&Sdaemon_initialized
);
2402 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2403 doc
: /* Args passed by shell to Emacs, as a list of strings.
2404 Many arguments are deleted from the list as they are processed. */);
2406 DEFVAR_LISP ("system-type", Vsystem_type
,
2407 doc
: /* The value is a symbol indicating the type of operating system you are using.
2409 `gnu' compiled for a GNU Hurd system.
2410 `gnu/linux' compiled for a GNU/Linux system.
2411 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2412 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2413 `ms-dos' compiled as an MS-DOS application.
2414 `windows-nt' compiled as a native W32 application.
2415 `cygwin' compiled using the Cygwin library.
2416 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2417 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2418 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2419 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2421 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2422 doc
: /* Value is string indicating configuration Emacs was built for.
2423 On MS-Windows, the value reflects the OS flavor and version on which
2424 Emacs is running. */);
2425 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2427 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2428 doc
: /* String containing the configuration options Emacs was built with. */);
2429 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2431 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2432 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2434 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2435 doc
: /* Hook run when `kill-emacs' is called.
2436 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2437 in other similar situations), functions placed on this hook should not
2438 expect to be able to interact with the user. To ask for confirmation,
2439 see `kill-emacs-query-functions' instead.
2441 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2442 `noninteractive' was non-nil. */);
2443 Vkill_emacs_hook
= Qnil
;
2445 DEFVAR_LISP ("path-separator", Vpath_separator
,
2446 doc
: /* String containing the character that separates directories in
2447 search paths, such as PATH and other similar environment variables. */);
2450 Vpath_separator
= make_string (&c
, 1);
2453 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2454 doc
: /* The program name that was used to run Emacs.
2455 Any directory names are omitted. */);
2457 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2458 doc
: /* The directory in which the Emacs executable was found, to run it.
2459 The value is nil if that directory's name is not known. */);
2461 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2462 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2463 In an installed Emacs, this is normally nil. It is non-nil if
2464 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2465 within the variable `invocation-directory' or its parent. For example,
2466 this is the case when running an uninstalled Emacs executable from its
2467 build directory. */);
2468 Vinstallation_directory
= Qnil
;
2470 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2471 doc
: /* System locale for messages. */);
2472 Vsystem_messages_locale
= Qnil
;
2474 DEFVAR_LISP ("previous-system-messages-locale",
2475 Vprevious_system_messages_locale
,
2476 doc
: /* Most recently used system locale for messages. */);
2477 Vprevious_system_messages_locale
= Qnil
;
2479 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2480 doc
: /* System locale for time. */);
2481 Vsystem_time_locale
= Qnil
;
2483 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2484 doc
: /* Most recently used system locale for time. */);
2485 Vprevious_system_time_locale
= Qnil
;
2487 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2488 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2489 Vbefore_init_time
= Qnil
;
2491 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2492 doc
: /* Value of `current-time' after loading the init files.
2493 This is nil during initialization. */);
2494 Vafter_init_time
= Qnil
;
2496 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2497 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2498 inhibit_x_resources
= 0;
2500 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2501 doc
: /* Short copyright string for this version of Emacs. */);
2502 Vemacs_copyright
= build_string (emacs_copyright
);
2504 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2505 doc
: /* Version numbers of this version of Emacs. */);
2506 Vemacs_version
= build_string (emacs_version
);
2508 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2509 doc
: /* Alist of dynamic libraries vs external files implementing them.
2510 Each element is a list (LIBRARY FILE...), where the car is a symbol
2511 representing a supported external library, and the rest are strings giving
2512 alternate filenames for that library.
2514 Emacs tries to load the library from the files in the order they appear on
2515 the list; if none is loaded, the running session of Emacs won't have access
2518 Note that image types `pbm' and `xbm' do not need entries in this variable
2519 because they do not depend on external libraries and are always available.
2521 Also note that this is not a generic facility for accessing external
2522 libraries; only those already known by Emacs will be loaded. */);
2523 Vdynamic_library_alist
= Qnil
;
2524 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2526 /* Make sure IS_DAEMON starts up as false. */