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"
53 #include "blockinput.h"
54 #include "syssignal.h"
57 #include "termhooks.h"
69 #if (defined PROFILING \
70 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
71 # include <sys/gmon.h>
72 extern void moncontrol (int mode
);
85 #include <sys/resource.h>
88 #ifdef HAVE_PERSONALITY_LINUX32
89 #include <sys/personality.h>
96 static const char emacs_version
[] = VERSION
;
97 static const char emacs_copyright
[] = "Copyright (C) 2012 Free Software Foundation, Inc.";
99 /* Empty lisp strings. To avoid having to build any others. */
100 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
102 /* Set nonzero after Emacs has started up the first time.
103 Prevents reinitialization of the Lisp world and keymaps
104 on subsequent starts. */
108 extern void unexec_init_emacs_zone (void);
111 #ifdef DOUG_LEA_MALLOC
112 /* Preserves a pointer to the memory allocated that copies that
113 static data inside glibc's malloc. */
114 static void *malloc_state_ptr
;
115 /* From glibc, a routine that returns a copy of the malloc internal state. */
116 extern void *malloc_get_state (void);
117 /* From glibc, a routine that overwrites the malloc internal state. */
118 extern int malloc_set_state (void*);
119 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
120 dumping. Used to work around a bug in glibc's malloc. */
121 static int malloc_using_checking
;
124 Lisp_Object Qfile_name_handler_alist
;
126 Lisp_Object Qrisky_local_variable
;
128 Lisp_Object Qkill_emacs
;
130 /* If non-zero, Emacs should not attempt to use a window-specific code,
131 but instead should use the virtual terminal under which it was started. */
132 int inhibit_window_system
;
134 /* If non-zero, a filter or a sentinel is running. Tested to save the match
135 data on the first attempt to change it inside asynchronous code. */
136 int running_asynch_code
;
138 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
139 /* If non-zero, -d was specified, meaning we're using some window system. */
143 /* An address near the bottom of the stack.
144 Tells GC how to save a copy of the stack. */
147 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
148 /* The address where the heap starts (from the first sbrk (0) call). */
149 static void *my_heap_start
;
153 /* The gap between BSS end and heap start as far as we can tell. */
154 static uprintmax_t heap_bss_diff
;
157 /* Nonzero means running Emacs without interactive terminal. */
160 /* Nonzero means remove site-lisp directories from load-path. */
163 /* Name for the server started by the daemon.*/
164 static char *daemon_name
;
166 /* Pipe used to send exit notification to the daemon parent at
170 /* Save argv and argc. */
174 static void sort_args (int argc
, char **argv
);
175 static void syms_of_emacs (void);
177 /* MSVC needs each string be shorter than 2048 bytes, so the usage
178 strings below are split to not overflow this limit. */
180 Usage: %s [OPTION-OR-FILENAME]...\n\
182 Run Emacs, the extensible, customizable, self-documenting real-time\n\
183 display editor. The recommended way to start Emacs for normal editing\n\
184 is with no options at all.\n\
186 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
187 read the main documentation for these command-line arguments.\n\
189 Initialization options:\n\
191 --batch do not do interactive display; implies -q\n\
192 --chdir DIR change to directory DIR\n\
193 --daemon start a server in the background\n\
194 --debug-init enable Emacs Lisp debugger for init file\n\
195 --display, -d DISPLAY use X server DISPLAY\n\
196 --no-desktop do not load a saved desktop\n\
197 --no-init-file, -q load neither ~/.emacs nor default.el\n\
198 --no-shared-memory, -nl do not use shared memory\n\
199 --no-site-file do not load site-start.el\n\
200 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
201 --no-splash do not display a splash screen on startup\n\
202 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
203 --quick, -Q equivalent to:\n\
204 -q --no-site-file --no-site-lisp --no-splash\n\
205 --script FILE run FILE as an Emacs Lisp script\n\
206 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
207 --user, -u USER load ~USER/.emacs instead of your own\n\
213 FILE visit FILE using find-file\n\
214 +LINE go to line LINE in next FILE\n\
215 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
216 --directory, -L DIR add DIR to variable load-path\n\
217 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
218 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
219 --file FILE visit FILE using find-file\n\
220 --find-file FILE visit FILE using find-file\n\
221 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
222 --insert FILE insert contents of FILE into current buffer\n\
223 --kill exit without asking for confirmation\n\
224 --load, -l FILE load Emacs Lisp FILE using the load function\n\
225 --visit FILE visit FILE using find-file\n\
231 --background-color, -bg COLOR window background color\n\
232 --basic-display, -D disable many display features;\n\
233 used for debugging Emacs\n\
234 --border-color, -bd COLOR main border color\n\
235 --border-width, -bw WIDTH width of main border\n\
236 --color, --color=MODE override color mode for character terminals;\n\
237 MODE defaults to `auto', and\n\
238 can also be `never', `always',\n\
239 or a mode name like `ansi8'\n\
240 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
241 --font, -fn FONT default font; must be fixed-width\n\
242 --foreground-color, -fg COLOR window foreground color\n\
243 --fullheight, -fh make the first frame high as the screen\n\
244 --fullscreen, -fs make the first frame fullscreen\n\
245 --fullwidth, -fw make the first frame wide as the screen\n\
246 --maximized, -mm make the first frame maximized\n\
247 --geometry, -g GEOMETRY window geometry\n\
248 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
249 --iconic start Emacs in iconified state\n\
250 --internal-border, -ib WIDTH width between text and main border\n\
251 --line-spacing, -lsp PIXELS additional space to put between lines\n\
252 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
253 --name NAME title for initial Emacs frame\n\
254 --no-blinking-cursor, -nbc disable blinking cursor\n\
255 --reverse-video, -r, -rv switch foreground and background\n\
256 --title, -T TITLE title for initial Emacs frame\n\
257 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
258 --xrm XRESOURCES set additional X resources\n\
259 --parent-id XID set parent window\n\
260 --help display this help and exit\n\
261 --version output version information and exit\n\
265 You can generally also specify long option names with a single -; for\n\
266 example, -batch as well as --batch. You can use any unambiguous\n\
267 abbreviation for a --option.\n\
269 Various environment variables and window system resources also affect\n\
270 Emacs' operation. See the main documentation.\n\
272 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
273 section of the Emacs manual or the file BUGS.\n"
276 /* Signal code for the fatal signal that was received. */
277 static int fatal_error_code
;
279 /* Nonzero if handling a fatal error already. */
280 int fatal_error_in_progress
;
282 /* If non-null, call this function from fatal_error_signal before
283 committing suicide. */
285 static void (*fatal_error_signal_hook
) (void);
287 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
288 /* When compiled with GTK and running under Gnome,
289 multiple threads may be created. Keep track of our main
290 thread to make sure signals are delivered to it (see syssignal.h). */
292 pthread_t main_thread
;
296 /* NS autrelease pool, for memory management. */
297 static void *ns_pool
;
302 /* Handle bus errors, invalid instruction, etc. */
303 #ifndef FLOAT_CATCH_SIGILL
307 fatal_error_signal (int sig
)
309 SIGNAL_THREAD_CHECK (sig
);
310 fatal_error_code
= sig
;
311 signal (sig
, SIG_DFL
);
313 TOTALLY_UNBLOCK_INPUT
;
315 /* If fatal error occurs in code below, avoid infinite recursion. */
316 if (! fatal_error_in_progress
)
318 fatal_error_in_progress
= 1;
320 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
321 Fkill_emacs (make_number (sig
));
323 shut_down_emacs (sig
, 0, Qnil
);
326 /* Signal the same code; this time it will really be fatal.
327 Remember that since we're in a signal handler, the signal we're
328 going to send is probably blocked, so we have to unblock it if we
329 want to really receive it. */
331 sigunblock (sigmask (fatal_error_code
));
334 if (fatal_error_signal_hook
)
335 fatal_error_signal_hook ();
337 kill (getpid (), fatal_error_code
);
342 /* Handler for SIGDANGER. */
344 memory_warning_signal (int sig
)
346 signal (sig
, memory_warning_signal
);
347 SIGNAL_THREAD_CHECK (sig
);
349 malloc_warning ("Operating system warns that virtual memory is running low.\n");
351 /* It might be unsafe to call do_auto_save now. */
352 force_auto_save_soon ();
356 /* We define abort, rather than using it from the library,
357 so that GDB can return from a breakpoint here.
358 MSDOS has its own definition in msdos.c. */
360 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
365 kill (getpid (), SIGABRT
);
366 /* This shouldn't be executed, but it prevents a warning. */
372 /* Code for dealing with Lisp access to the Unix command line. */
375 init_cmdargs (int argc
, char **argv
, int skip_args
)
378 Lisp_Object name
, dir
, handler
;
379 ptrdiff_t count
= SPECPDL_INDEX ();
380 Lisp_Object raw_name
;
385 raw_name
= build_string (argv
[0]);
387 /* Add /: to the front of the name
388 if it would otherwise be treated as magic. */
389 handler
= Ffind_file_name_handler (raw_name
, Qt
);
390 if (! NILP (handler
))
391 raw_name
= concat2 (build_string ("/:"), raw_name
);
393 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
394 Vinvocation_directory
= Ffile_name_directory (raw_name
);
396 /* If we got no directory in argv[0], search PATH to find where
397 Emacs actually came from. */
398 if (NILP (Vinvocation_directory
))
401 int yes
= openp (Vexec_path
, Vinvocation_name
,
402 Vexec_suffixes
, &found
, make_number (X_OK
));
405 /* Add /: to the front of the name
406 if it would otherwise be treated as magic. */
407 handler
= Ffind_file_name_handler (found
, Qt
);
408 if (! NILP (handler
))
409 found
= concat2 (build_string ("/:"), found
);
410 Vinvocation_directory
= Ffile_name_directory (found
);
414 if (!NILP (Vinvocation_directory
)
415 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
416 /* Emacs was started with relative path, like ./emacs.
418 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
420 Vinstallation_directory
= Qnil
;
422 if (!NILP (Vinvocation_directory
))
424 dir
= Vinvocation_directory
;
426 /* If we are running from the build directory, set DIR to the
427 src subdirectory of the Emacs tree, like on Posix
429 if (SBYTES (dir
) > sizeof ("/i386/") - 1
430 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
432 dir
= Fexpand_file_name (build_string ("../.."), dir
);
433 #else /* !WINDOWSNT */
435 name
= Fexpand_file_name (Vinvocation_name
, dir
);
438 Lisp_Object tem
, lib_src_exists
;
439 Lisp_Object etc_exists
, info_exists
;
441 /* See if dir contains subdirs for use by Emacs.
442 Check for the ones that would exist in a build directory,
443 not including lisp and info. */
444 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
445 lib_src_exists
= Ffile_exists_p (tem
);
448 /* MSDOS installations frequently remove lib-src, but we still
449 must set installation-directory, or else info won't find
450 its files (it uses the value of installation-directory). */
451 tem
= Fexpand_file_name (build_string ("info"), dir
);
452 info_exists
= Ffile_exists_p (tem
);
457 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
459 tem
= Fexpand_file_name (build_string ("etc"), dir
);
460 etc_exists
= Ffile_exists_p (tem
);
461 if (!NILP (etc_exists
))
463 Vinstallation_directory
464 = Ffile_name_as_directory (dir
);
469 /* See if dir's parent contains those subdirs. */
470 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
471 lib_src_exists
= Ffile_exists_p (tem
);
475 /* See the MSDOS commentary above. */
476 tem
= Fexpand_file_name (build_string ("../info"), dir
);
477 info_exists
= Ffile_exists_p (tem
);
482 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
484 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
485 etc_exists
= Ffile_exists_p (tem
);
486 if (!NILP (etc_exists
))
488 tem
= Fexpand_file_name (build_string (".."), dir
);
489 Vinstallation_directory
490 = Ffile_name_as_directory (tem
);
495 /* If the Emacs executable is actually a link,
496 next try the dir that the link points into. */
497 tem
= Ffile_symlink_p (name
);
500 name
= Fexpand_file_name (tem
, dir
);
501 dir
= Ffile_name_directory (name
);
508 Vcommand_line_args
= Qnil
;
510 for (i
= argc
- 1; i
>= 0; i
--)
512 if (i
== 0 || i
> skip_args
)
513 /* For the moment, we keep arguments as is in unibyte strings.
514 They are decoded in the function command-line after we know
515 locale-coding-system. */
517 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
521 unbind_to (count
, Qnil
);
524 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
525 doc
: /* Return the program name that was used to run Emacs.
526 Any directory names are omitted. */)
529 return Fcopy_sequence (Vinvocation_name
);
532 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
534 doc
: /* Return the directory name in which the Emacs executable was located. */)
537 return Fcopy_sequence (Vinvocation_directory
);
542 /* A valid but unlikely value for the TZ environment value.
543 It is OK (though a bit slower) if the user actually chooses this value. */
544 static char dump_tz
[] = "UtC0";
547 #ifndef ORDINARY_LINK
548 /* We don't include crtbegin.o and crtend.o in the link,
549 so these functions and variables might be missed.
550 Provide dummy definitions to avoid error.
551 (We don't have any real constructors or destructors.) */
554 /* Define a dummy function F. Declare F too, to pacify gcc
555 -Wmissing-prototypes. */
556 #define DEFINE_DUMMY_FUNCTION(f) \
557 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
559 #ifndef GCC_CTORS_IN_LIBC
560 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
561 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
562 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
563 /* GNU/Linux has a bug in its library; avoid an error. */
565 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
567 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
568 #endif /* GCC_CTORS_IN_LIBC */
569 DEFINE_DUMMY_FUNCTION (__main
)
570 #endif /* __GNUC__ */
571 #endif /* ORDINARY_LINK */
573 /* Test whether the next argument in ARGV matches SSTR or a prefix of
574 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
575 (the argument is supposed to have a value) store in *VALPTR either
576 the next argument or the portion of this one after the equal sign.
577 ARGV is read starting at position *SKIPPTR; this index is advanced
578 by the number of arguments used.
580 Too bad we can't just use getopt for all of this, but we don't have
581 enough information to do it right. */
584 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
585 int minlen
, char **valptr
, int *skipptr
)
591 /* Don't access argv[argc]; give up in advance. */
592 if (argc
<= *skipptr
+ 1)
595 arg
= argv
[*skipptr
+1];
598 if (strcmp (arg
, sstr
) == 0)
602 *valptr
= argv
[*skipptr
+2];
609 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
610 ? p
- arg
: strlen (arg
));
611 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
613 else if (valptr
== NULL
)
624 else if (argv
[*skipptr
+2] != NULL
)
626 *valptr
= argv
[*skipptr
+2];
636 #ifdef DOUG_LEA_MALLOC
638 /* malloc can be invoked even before main (e.g. by the dynamic
639 linker), so the dumped malloc state must be restored as early as
640 possible using this special hook. */
643 malloc_initialize_hook (void)
647 if (!malloc_using_checking
)
648 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
649 ignored if the heap to be restored was constructed without
650 malloc checking. Can't use unsetenv, since that calls malloc. */
654 for (p
= environ
; p
&& *p
; p
++)
655 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
664 malloc_set_state (malloc_state_ptr
);
665 #ifndef XMALLOC_OVERRUN_CHECK
666 free (malloc_state_ptr
);
671 if (my_heap_start
== 0)
672 my_heap_start
= sbrk (0);
673 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
677 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
679 #endif /* DOUG_LEA_MALLOC */
684 main (int argc
, char **argv
)
689 char stack_bottom_variable
;
690 int do_initial_setlocale
;
692 #ifdef HAVE_SETRLIMIT
707 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
708 /* This is used by the Cygwin build. */
709 setenv ("G_SLICE", "always-malloc", 1);
715 extern char my_endbss
[];
716 extern char *my_endbss_static
;
718 if (my_heap_start
== 0)
719 my_heap_start
= sbrk (0);
721 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
725 #ifdef RUN_TIME_REMAP
727 run_time_remap (argv
[0]);
730 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
733 unexec_init_emacs_zone ();
736 sort_args (argc
, argv
);
738 while (argv
[argc
]) argc
++;
740 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
742 const char *version
, *copyright
;
745 Lisp_Object tem
, tem2
;
746 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
747 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
750 fprintf (stderr
, "Invalid value of `emacs-version'\n");
755 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
760 version
= SSDATA (tem
);
761 copyright
= SSDATA (tem2
);
766 version
= emacs_version
;
767 copyright
= emacs_copyright
;
769 printf ("GNU Emacs %s\n", version
);
770 printf ("%s\n", copyright
);
771 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
772 printf ("You may redistribute copies of Emacs\n");
773 printf ("under the terms of the GNU General Public License.\n");
774 printf ("For more information about these matters, ");
775 printf ("see the file named COPYING.\n");
779 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
780 if (chdir (ch_to_dir
) == -1)
782 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
783 argv
[0], ch_to_dir
, strerror (errno
));
788 #ifdef HAVE_PERSONALITY_LINUX32
790 && (strcmp (argv
[argc
-1], "dump") == 0
791 || strcmp (argv
[argc
-1], "bootstrap") == 0)
792 && ! getenv ("EMACS_HEAP_EXEC"))
794 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
795 /* Set this so we only do this once. */
798 /* A flag to turn off address randomization which is introduced
799 in linux kernel shipped with fedora core 4 */
800 #define ADD_NO_RANDOMIZE 0x0040000
801 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
802 #undef ADD_NO_RANDOMIZE
804 execvp (argv
[0], argv
);
806 /* If the exec fails, try to dump anyway. */
809 #endif /* HAVE_PERSONALITY_LINUX32 */
811 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
812 /* Extend the stack space available.
813 Don't do that if dumping, since some systems (e.g. DJGPP)
814 might define a smaller stack limit at that time. */
817 && (!noninteractive
|| initialized
)
819 && !getrlimit (RLIMIT_STACK
, &rlim
))
822 extern size_t re_max_failures
;
823 /* Approximate the amount regex.c needs per unit of re_max_failures. */
824 int ratio
= 20 * sizeof (char *);
825 /* Then add 33% to cover the size of the smaller stacks that regex.c
826 successively allocates and discards, on its way to the maximum. */
828 /* Add in some extra to cover
829 what we're likely to use for other reasons. */
830 newlim
= re_max_failures
* ratio
+ 200000;
832 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
833 stack allocation routine for new process that the allocation
834 fails if stack limit is not on page boundary. So, round up the
835 new limit to page boundary. */
836 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
838 if (newlim
> rlim
.rlim_max
)
840 newlim
= rlim
.rlim_max
;
841 /* Don't let regex.c overflow the stack we have. */
842 re_max_failures
= (newlim
- 200000) / ratio
;
844 if (rlim
.rlim_cur
< newlim
)
845 rlim
.rlim_cur
= newlim
;
847 setrlimit (RLIMIT_STACK
, &rlim
);
849 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
851 /* Record (approximately) where the stack begins. */
852 stack_bottom
= &stack_bottom_variable
;
856 #ifndef SYSTEM_MALLOC
857 /* Arrange to get warning messages as memory fills up. */
858 memory_warnings (0, malloc_warning
);
860 /* Call malloc at least once, to run the initial __malloc_hook.
861 Also call realloc and free for consistency. */
862 free (realloc (malloc (4), 4));
865 /* Arrange to disable interrupt input inside malloc etc. */
866 uninterrupt_malloc ();
867 # endif /* not SYNC_INPUT */
868 #endif /* not SYSTEM_MALLOC */
870 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
871 main_thread
= pthread_self ();
872 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
874 #if defined (MSDOS) || defined (WINDOWSNT)
875 /* We do all file input/output as binary files. When we need to translate
876 newlines, we do that manually. */
878 #endif /* MSDOS || WINDOWSNT */
881 if (!isatty (fileno (stdin
)))
882 setmode (fileno (stdin
), O_BINARY
);
883 if (!isatty (fileno (stdout
)))
886 setmode (fileno (stdout
), O_BINARY
);
890 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
891 The build procedure uses this while dumping, to ensure that the
892 dumped Emacs does not have its system locale tables initialized,
893 as that might cause screwups when the dumped Emacs starts up. */
895 char *lc_all
= getenv ("LC_ALL");
896 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
899 /* Set locale now, so that initial error messages are localized properly.
900 fixup_locale must wait until later, since it builds strings. */
901 if (do_initial_setlocale
)
902 setlocale (LC_ALL
, "");
904 inhibit_window_system
= 0;
906 /* Handle the -t switch, which specifies filename to use as terminal. */
910 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
915 result
= emacs_open (term
, O_RDWR
, 0);
916 if (result
< 0 || dup (0) < 0)
918 char *errstring
= strerror (errno
);
919 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
924 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
927 fprintf (stderr
, "Using %s\n", term
);
928 #ifdef HAVE_WINDOW_SYSTEM
929 inhibit_window_system
= 1; /* -t => -nw */
936 /* Command line option --no-windows is deprecated and thus not mentioned
937 in the manual and usage information. */
938 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
939 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
940 inhibit_window_system
= 1;
942 /* Handle the -batch switch, which means don't do interactive display. */
944 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
947 Vundo_outer_limit
= Qnil
;
949 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
951 noninteractive
= 1; /* Set batch mode. */
952 /* Convert --script to -scriptload, un-skip it, and sort again
953 so that it will be handled in proper sequence. */
954 /* FIXME broken for --script=FILE - is that supposed to work? */
955 argv
[skip_args
- 1] = (char *) "-scriptload";
957 sort_args (argc
, argv
);
960 /* Handle the --help option, which gives a usage message. */
961 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
963 printf (USAGE1
, argv
[0], USAGE2
);
969 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
970 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
975 /* Start as a daemon: fork a new child process which will run the
976 rest of the initialization code, then exit.
978 Detaching a daemon requires the following steps:
982 - close the tty file-descriptors
984 We only want to do the last 2 steps once the daemon is ready to
985 serve requests, i.e. after loading .emacs (initialization).
986 OTOH initialization may start subprocesses (e.g. ispell) and these
987 should be run from the proper process (the one that will end up
988 running as daemon) and with the proper "session id" in order for
989 them to keep working after detaching, so fork and setsid need to be
990 performed before initialization.
992 We want to avoid exiting before the server socket is ready, so
993 use a pipe for synchronization. The parent waits for the child
994 to close its end of the pipe (using `daemon-initialized')
996 if (pipe (daemon_pipe
) == -1)
998 fprintf (stderr
, "Cannot pipe!\n");
1002 #ifndef NS_IMPL_COCOA
1004 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1005 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1006 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1009 #else /* NS_IMPL_COCOA */
1010 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1011 forked process: http://developer.apple.com/ReleaseNotes/
1012 CoreFoundation/CoreFoundation.html)
1013 We mark being in the exec'd process by a daemon name argument of
1014 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1015 NAME is the original daemon name, if any. */
1016 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1017 f
= fork (); /* in orig */
1019 f
= 0; /* in exec'd */
1020 #endif /* NS_IMPL_COCOA */
1026 /* Close unused writing end of the pipe. */
1027 close (daemon_pipe
[1]);
1029 /* Just wait for the child to close its end of the pipe. */
1032 retval
= read (daemon_pipe
[0], &buf
, 1);
1034 while (retval
== -1 && errno
== EINTR
);
1038 fprintf (stderr
, "Error reading status from child\n");
1041 else if (retval
== 0)
1043 fprintf (stderr
, "Error: server did not start correctly\n");
1047 close (daemon_pipe
[0]);
1052 fprintf (stderr
, "Cannot fork!\n");
1056 #ifdef NS_IMPL_COCOA
1058 /* In orig process, forked as child, OR in exec'd. */
1059 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1060 { /* In orig, child: now exec w/special daemon name. */
1063 snprintf (fdStr
, sizeof fdStr
,
1064 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1065 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1067 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1069 fprintf (stderr
, "daemon: child name too long\n");
1073 argv
[skip_args
] = fdStr
;
1075 execv (argv
[0], argv
);
1076 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1080 /* In exec'd: parse special dname into pipe and name info. */
1081 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1082 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1084 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1087 dname_arg2
[0] = '\0';
1088 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1090 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1092 #endif /* NS_IMPL_COCOA */
1095 daemon_name
= xstrdup (dname_arg
);
1096 /* Close unused reading end of the pipe. */
1097 close (daemon_pipe
[0]);
1098 /* Make sure that the used end of the pipe is closed on exec, so
1099 that it is not accessible to programs started from .emacs. */
1100 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1106 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1111 if (! noninteractive
)
1113 #if defined (USG5) && defined (INTERRUPT_INPUT)
1116 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1118 extern void malloc_enable_thread (void);
1120 malloc_enable_thread ();
1127 /* Don't catch SIGHUP if dumping. */
1134 sigblock (sigmask (SIGHUP
));
1135 /* In --batch mode, don't catch SIGHUP if already ignored.
1136 That makes nohup work. */
1137 if (! noninteractive
1138 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1139 signal (SIGHUP
, fatal_error_signal
);
1140 sigunblock (sigmask (SIGHUP
));
1145 ! noninteractive
|| initialized
1151 /* Don't catch these signals in batch mode if dumping.
1152 On some machines, this sets static data that would make
1153 signal fail to work right when the dumped Emacs is run. */
1154 signal (SIGQUIT
, fatal_error_signal
);
1155 signal (SIGILL
, fatal_error_signal
);
1156 signal (SIGTRAP
, fatal_error_signal
);
1158 add_user_signal (SIGUSR1
, "sigusr1");
1161 add_user_signal (SIGUSR2
, "sigusr2");
1164 signal (SIGABRT
, fatal_error_signal
);
1167 signal (SIGHWE
, fatal_error_signal
);
1170 signal (SIGPRE
, fatal_error_signal
);
1173 signal (SIGORE
, fatal_error_signal
);
1176 signal (SIGUME
, fatal_error_signal
);
1179 signal (SIGDLK
, fatal_error_signal
);
1182 signal (SIGCPULIM
, fatal_error_signal
);
1185 /* This is missing on some systems - OS/2, for example. */
1186 signal (SIGIOT
, fatal_error_signal
);
1189 signal (SIGEMT
, fatal_error_signal
);
1191 signal (SIGFPE
, fatal_error_signal
);
1193 signal (SIGBUS
, fatal_error_signal
);
1195 signal (SIGSEGV
, fatal_error_signal
);
1197 signal (SIGSYS
, fatal_error_signal
);
1199 /* May need special treatment on MS-Windows. See
1200 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1201 Please update the doc of kill-emacs, kill-emacs-hook, and
1202 NEWS if you change this.
1204 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1205 signal (SIGTERM
, fatal_error_signal
);
1207 signal (SIGXCPU
, fatal_error_signal
);
1210 signal (SIGXFSZ
, fatal_error_signal
);
1211 #endif /* SIGXFSZ */
1214 /* This just means available memory is getting low. */
1215 signal (SIGDANGER
, memory_warning_signal
);
1219 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1220 signal (SIGXCPU
, fatal_error_signal
);
1221 signal (SIGIOINT
, fatal_error_signal
);
1222 signal (SIGGRANT
, fatal_error_signal
);
1223 signal (SIGRETRACT
, fatal_error_signal
);
1224 signal (SIGSOUND
, fatal_error_signal
);
1225 signal (SIGMSG
, fatal_error_signal
);
1229 noninteractive1
= noninteractive
;
1231 /* Perform basic initializations (not merely interning symbols). */
1238 init_charset_once ();
1239 init_coding_once ();
1240 init_syntax_once (); /* Create standard syntax table. */
1241 init_category_once (); /* Create standard category table. */
1242 /* Must be done before init_buffer. */
1243 init_casetab_once ();
1244 init_buffer_once (); /* Create buffer table and some buffers. */
1245 init_minibuf_once (); /* Create list of minibuffers. */
1246 /* Must precede init_window_once. */
1248 /* Call syms_of_xfaces before init_window_once because that
1249 function creates Vterminal_frame. Termcap frames now use
1250 faces, and the face implementation uses some symbols as
1253 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1254 be better to arrange things not to have this dependency. */
1256 /* Call syms_of_keyboard before init_window_once because
1257 keyboard sets up symbols that include some face names that
1258 the X support will want to use. This can happen when
1259 CANNOT_DUMP is defined. */
1260 syms_of_keyboard ();
1262 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1265 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1267 /* Before syms_of_coding because it initializes Qcharsetp. */
1269 /* Before init_window_once, because it sets up the
1270 Vcoding_system_hash_table. */
1271 syms_of_coding (); /* This should be after syms_of_fileio. */
1273 init_window_once (); /* Init the window system. */
1274 #ifdef HAVE_WINDOW_SYSTEM
1275 init_fringe_once (); /* Swap bitmaps if necessary. */
1276 #endif /* HAVE_WINDOW_SYSTEM */
1281 if (do_initial_setlocale
)
1284 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1285 Vsystem_time_locale
= Vprevious_system_time_locale
;
1291 running_asynch_code
= 0;
1294 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1297 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1300 ns_pool
= ns_alloc_autorelease_pool ();
1301 if (!noninteractive
)
1303 #ifdef NS_IMPL_COCOA
1304 if (skip_args
< argc
)
1306 /* FIXME: Do the right thing if getenv returns NULL, or if
1308 if (!strncmp (argv
[skip_args
], "-psn", 4))
1311 chdir (getenv ("HOME"));
1313 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1316 chdir (getenv ("HOME"));
1321 #endif /* HAVE_NS */
1323 #ifdef HAVE_X_WINDOWS
1324 /* Stupid kludge to catch command-line display spec. We can't
1325 handle this argument entirely in window system dependent code
1326 because we don't even know which window system dependent code
1327 to run until we've recognized this argument. */
1329 char *displayname
= 0;
1330 int count_before
= skip_args
;
1332 /* Skip any number of -d options, but only use the last one. */
1335 int count_before_this
= skip_args
;
1337 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1339 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1344 count_before
= count_before_this
;
1347 /* If we have the form --display=NAME,
1348 convert it into -d name.
1349 This requires inserting a new element into argv. */
1350 if (displayname
&& count_before
< skip_args
)
1352 if (skip_args
== count_before
+ 1)
1354 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1355 (argc
- (count_before
+ 2)) * sizeof *argv
);
1356 argv
[count_before
+ 2] = displayname
;
1359 argv
[count_before
+ 1] = (char *) "-d";
1364 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1365 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1369 /* Don't actually discard this arg. */
1370 skip_args
= count_before
;
1372 #else /* !HAVE_X_WINDOWS */
1375 int count_before
= skip_args
;
1377 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1378 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1381 skip_args
= count_before
;
1385 /* argmatch must not be used after here,
1386 except when building temacs
1387 because the -d argument has not been skipped in skip_args. */
1390 /* Call early 'cause init_environment needs it. */
1392 /* Set defaults for several environment variables. */
1394 init_environment (argc
, argv
, skip_args
);
1401 /* Initialize environment from registry settings. */
1402 init_environment (argv
);
1403 init_ntproc (); /* must precede init_editfns. */
1406 /* Initialize and GC-protect Vinitial_environment and
1407 Vprocess_environment before set_initial_environment fills them
1410 syms_of_callproc ();
1411 /* egetenv is a pretty low-level facility, which may get called in
1412 many circumstances; it seems flimsy to put off initializing it
1413 until calling init_callproc. Do not do it when dumping. */
1414 if (initialized
|| ((strcmp (argv
[argc
-1], "dump") != 0
1415 && strcmp (argv
[argc
-1], "bootstrap") != 0)))
1416 set_initial_environment ();
1418 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1419 if this is not done. Do it after set_global_environment so that we
1420 don't pollute Vglobal_environment. */
1421 /* Setting LANG here will defeat the startup locale processing... */
1426 init_buffer (); /* Init default directory of main buffer. */
1428 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1429 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1433 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1434 Lisp_Object old_log_max
;
1435 old_log_max
= Vmessage_log_max
;
1436 XSETFASTINT (Vmessage_log_max
, 0);
1437 message_dolog ("", 0, 1, 0);
1438 Vmessage_log_max
= old_log_max
;
1441 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1444 /* Check to see if Emacs has been installed correctly. */
1445 check_windows_init_file ();
1448 /* Intern the names of all standard functions and variables;
1449 define standard keys. */
1453 /* The basic levels of Lisp must come first. Note that
1454 syms_of_data and some others have already been called. */
1460 syms_of_floatfns ();
1463 syms_of_bytecode ();
1465 syms_of_casefiddle ();
1467 syms_of_category ();
1469 syms_of_character ();
1476 syms_of_filelock ();
1479 /* syms_of_keymap (); */
1487 syms_of_terminal ();
1493 syms_of_textprop ();
1494 syms_of_composite ();
1497 #endif /* WINDOWSNT */
1501 #ifdef HAVE_WINDOW_SYSTEM
1504 #endif /* HAVE_WINDOW_SYSTEM */
1505 #ifdef HAVE_X_WINDOWS
1510 syms_of_xsettings ();
1517 #endif /* HAVE_X_WINDOWS */
1528 syms_of_w32select ();
1531 #endif /* HAVE_NTGUI */
1537 syms_of_win16select ();
1544 syms_of_nsselect ();
1546 #endif /* HAVE_NS */
1553 syms_of_dbusbind ();
1554 #endif /* HAVE_DBUS */
1558 #endif /* WINDOWSNT */
1560 keys_of_casefiddle ();
1563 keys_of_keyboard ();
1569 /* Initialization that must be done even if the global variable
1570 initialized is non zero. */
1572 globals_of_w32font ();
1573 globals_of_w32fns ();
1574 globals_of_w32menu ();
1575 globals_of_w32select ();
1576 #endif /* HAVE_NTGUI */
1581 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1582 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1583 init_keyboard (); /* This too must precede init_sys_modes. */
1584 if (!noninteractive
)
1585 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1587 #ifdef HAVE_WINDOW_SYSTEM
1589 #endif /* HAVE_WINDOW_SYSTEM */
1598 /* Handle -l loadup, args passed by Makefile. */
1599 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1600 Vtop_level
= Fcons (intern_c_string ("load"),
1601 Fcons (build_string (file
), Qnil
));
1602 /* Unless next switch is -nl, load "loadup.el" first thing. */
1604 Vtop_level
= Fcons (intern_c_string ("load"),
1605 Fcons (build_string ("loadup.el"), Qnil
));
1612 /* If the execution TZ happens to be the same as the dump TZ,
1613 change it to some other value and then change it back,
1614 to force the underlying implementation to reload the TZ info.
1615 This is needed on implementations that load TZ info from files,
1616 since the TZ file contents may differ between dump and execution. */
1617 char *tz
= getenv ("TZ");
1618 if (tz
&& !strcmp (tz
, dump_tz
))
1628 /* Set up for profiling. This is known to work on FreeBSD,
1629 GNU/Linux and MinGW. It might work on some other systems too.
1630 Give it a try and tell us if it works on your system. To compile
1631 for profiling, use the configure option --enable-profiling. */
1632 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1637 extern unsigned char etext
asm ("etext");
1643 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1652 #ifdef LOCALTIME_CACHE
1653 /* Some versions of localtime have a bug. They cache the value of the time
1654 zone rather than looking it up every time. Since localtime() is
1655 called to bolt the undumping time into the undumped emacs, this
1656 results in localtime ignoring the TZ environment variable.
1657 This flushes the new TZ value into localtime. */
1659 #endif /* defined (LOCALTIME_CACHE) */
1661 /* Enter editor command loop. This never returns. */
1667 /* Sort the args so we can find the most important ones
1668 at the beginning of argv. */
1670 /* First, here's a table of all the standard options. */
1672 struct standard_args
1675 const char *longname
;
1680 static const struct standard_args standard_args
[] =
1682 { "-version", "--version", 150, 0 },
1683 { "-chdir", "--chdir", 130, 1 },
1684 { "-t", "--terminal", 120, 1 },
1685 { "-nw", "--no-window-system", 110, 0 },
1686 { "-nw", "--no-windows", 110, 0 },
1687 { "-batch", "--batch", 100, 0 },
1688 { "-script", "--script", 100, 1 },
1689 { "-daemon", "--daemon", 99, 0 },
1690 { "-help", "--help", 90, 0 },
1691 { "-nl", "--no-loadup", 70, 0 },
1692 { "-nsl", "--no-site-lisp", 65, 0 },
1693 /* -d must come last before the options handled in startup.el. */
1694 { "-d", "--display", 60, 1 },
1695 { "-display", 0, 60, 1 },
1696 /* Now for the options handled in `command-line' (startup.el). */
1697 /* (Note that to imply -nsl, -Q is partially handled here.) */
1698 { "-Q", "--quick", 55, 0 },
1699 { "-quick", 0, 55, 0 },
1700 { "-q", "--no-init-file", 50, 0 },
1701 { "-no-init-file", 0, 50, 0 },
1702 { "-no-site-file", "--no-site-file", 40, 0 },
1703 { "-u", "--user", 30, 1 },
1704 { "-user", 0, 30, 1 },
1705 { "-debug-init", "--debug-init", 20, 0 },
1706 { "-iconic", "--iconic", 15, 0 },
1707 { "-D", "--basic-display", 12, 0},
1708 { "-basic-display", 0, 12, 0},
1709 { "-nbc", "--no-blinking-cursor", 12, 0 },
1710 /* Now for the options handled in `command-line-1' (startup.el). */
1711 { "-nbi", "--no-bitmap-icon", 10, 0 },
1712 { "-bg", "--background-color", 10, 1 },
1713 { "-background", 0, 10, 1 },
1714 { "-fg", "--foreground-color", 10, 1 },
1715 { "-foreground", 0, 10, 1 },
1716 { "-bd", "--border-color", 10, 1 },
1717 { "-bw", "--border-width", 10, 1 },
1718 { "-ib", "--internal-border", 10, 1 },
1719 { "-ms", "--mouse-color", 10, 1 },
1720 { "-cr", "--cursor-color", 10, 1 },
1721 { "-fn", "--font", 10, 1 },
1722 { "-font", 0, 10, 1 },
1723 { "-fs", "--fullscreen", 10, 0 },
1724 { "-fw", "--fullwidth", 10, 0 },
1725 { "-fh", "--fullheight", 10, 0 },
1726 { "-mm", "--maximized", 10, 0 },
1727 { "-g", "--geometry", 10, 1 },
1728 { "-geometry", 0, 10, 1 },
1729 { "-T", "--title", 10, 1 },
1730 { "-title", 0, 10, 1 },
1731 { "-name", "--name", 10, 1 },
1732 { "-xrm", "--xrm", 10, 1 },
1733 { "-parent-id", "--parent-id", 10, 1 },
1734 { "-r", "--reverse-video", 5, 0 },
1736 { "-reverse", 0, 5, 0 },
1737 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1738 { "-vb", "--vertical-scroll-bars", 5, 0 },
1739 { "-color", "--color", 5, 0},
1740 { "-no-splash", "--no-splash", 3, 0 },
1741 { "-no-desktop", "--no-desktop", 3, 0 },
1743 { "-NSAutoLaunch", 0, 5, 1 },
1744 { "-NXAutoLaunch", 0, 5, 1 },
1745 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1746 { "-_NSMachLaunch", 0, 85, 1 },
1747 { "-MachLaunch", 0, 85, 1 },
1748 { "-macosx", 0, 85, 0 },
1749 { "-NSHost", 0, 85, 1 },
1751 /* These have the same priority as ordinary file name args,
1752 so they are not reordered with respect to those. */
1753 { "-L", "--directory", 0, 1 },
1754 { "-directory", 0, 0, 1 },
1755 { "-l", "--load", 0, 1 },
1756 { "-load", 0, 0, 1 },
1757 /* This has no longname, because using --scriptload confuses sort_args,
1758 because then the --script long option seems to match twice; ie
1759 you can't have a long option which is a prefix of another long
1760 option. In any case, this is entirely an internal option. */
1761 { "-scriptload", NULL
, 0, 1 },
1762 { "-f", "--funcall", 0, 1 },
1763 { "-funcall", 0, 0, 1 },
1764 { "-eval", "--eval", 0, 1 },
1765 { "-execute", "--execute", 0, 1 },
1766 { "-find-file", "--find-file", 0, 1 },
1767 { "-visit", "--visit", 0, 1 },
1768 { "-file", "--file", 0, 1 },
1769 { "-insert", "--insert", 0, 1 },
1771 { "-NXOpen", 0, 0, 1 },
1772 { "-NXOpenTemp", 0, 0, 1 },
1773 { "-NSOpen", 0, 0, 1 },
1774 { "-NSOpenTemp", 0, 0, 1 },
1775 { "-GSFilePath", 0, 0, 1 },
1777 /* This should be processed after ordinary file name args and the like. */
1778 { "-kill", "--kill", -10, 0 },
1781 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1782 so that the highest priority ones come first.
1783 Do not change the order of elements of equal priority.
1784 If an option takes an argument, keep it and its argument together.
1786 If an option that takes no argument appears more
1787 than once, eliminate all but one copy of it. */
1790 sort_args (int argc
, char **argv
)
1792 char **new = xmalloc (argc
* sizeof *new);
1793 /* For each element of argv,
1794 the corresponding element of options is:
1795 0 for an option that takes no arguments,
1796 1 for an option that takes one argument, etc.
1797 -1 for an ordinary non-option argument. */
1798 int *options
= xnmalloc (argc
, sizeof *options
);
1799 int *priority
= xnmalloc (argc
, sizeof *priority
);
1801 int incoming_used
= 1;
1805 /* Categorize all the options,
1806 and figure out which argv elts are option arguments. */
1807 for (from
= 1; from
< argc
; from
++)
1811 if (argv
[from
][0] == '-')
1815 /* If we have found "--", don't consider
1816 any more arguments as options. */
1817 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1819 /* Leave the "--", and everything following it, at the end. */
1820 for (; from
< argc
; from
++)
1822 priority
[from
] = -100;
1828 /* Look for a match with a known old-fashioned option. */
1829 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1830 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1832 options
[from
] = standard_args
[i
].nargs
;
1833 priority
[from
] = standard_args
[i
].priority
;
1834 if (from
+ standard_args
[i
].nargs
>= argc
)
1835 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1836 from
+= standard_args
[i
].nargs
;
1840 /* Look for a match with a known long option.
1841 MATCH is -1 if no match so far, -2 if two or more matches so far,
1842 >= 0 (the table index of the match) if just one match so far. */
1843 if (argv
[from
][1] == '-')
1845 char const *equals
= strchr (argv
[from
], '=');
1847 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1852 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1853 if (standard_args
[i
].longname
1854 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1863 /* If we found exactly one match, use that. */
1866 options
[from
] = standard_args
[match
].nargs
;
1867 priority
[from
] = standard_args
[match
].priority
;
1868 /* If --OPTION=VALUE syntax is used,
1869 this option uses just one argv element. */
1872 if (from
+ options
[from
] >= argc
)
1873 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1874 from
+= options
[from
];
1876 /* FIXME When match < 0, shouldn't there be some error,
1877 or at least indication to the user that there was a
1884 /* Copy the arguments, in order of decreasing priority, to NEW. */
1886 while (incoming_used
< argc
)
1889 int best_priority
= -9999;
1891 /* Find the highest priority remaining option.
1892 If several have equal priority, take the first of them. */
1893 for (from
= 1; from
< argc
; from
++)
1895 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1897 best_priority
= priority
[from
];
1900 /* Skip option arguments--they are tied to the options. */
1901 if (options
[from
] > 0)
1902 from
+= options
[from
];
1908 /* Copy the highest priority remaining option, with its args, to NEW.
1909 Unless it is a duplicate of the previous one. */
1910 if (! (options
[best
] == 0
1911 && ! strcmp (new[to
- 1], argv
[best
])))
1913 new[to
++] = argv
[best
];
1914 for (i
= 0; i
< options
[best
]; i
++)
1915 new[to
++] = argv
[best
+ i
+ 1];
1918 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1920 /* Clear out this option in ARGV. */
1922 for (i
= 0; i
< options
[best
]; i
++)
1923 argv
[best
+ i
+ 1] = 0;
1926 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1930 memcpy (argv
, new, sizeof (char *) * argc
);
1937 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1938 doc
: /* Exit the Emacs job and kill it.
1939 If ARG is an integer, return ARG as the exit program code.
1940 If ARG is a string, stuff it as keyboard input.
1942 This function is called upon receipt of the signals SIGTERM
1943 or SIGHUP, and upon SIGINT in batch mode.
1945 The value of `kill-emacs-hook', if not void,
1946 is a list of functions (of no args),
1947 all of which are called before Emacs is actually killed. */)
1950 struct gcpro gcpro1
;
1959 hook
= intern ("kill-emacs-hook");
1960 Frun_hooks (1, &hook
);
1964 #ifdef HAVE_X_WINDOWS
1965 /* Transfer any clipboards we own to the clipboard manager. */
1966 x_clipboard_manager_save_all ();
1969 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1972 ns_release_autorelease_pool (ns_pool
);
1975 /* If we have an auto-save list file,
1976 kill it because we are exiting Emacs deliberately (not crashing).
1977 Do it after shut_down_emacs, which does an auto-save. */
1978 if (STRINGP (Vauto_save_list_file_name
))
1979 unlink (SSDATA (Vauto_save_list_file_name
));
1982 exit_code
= (XINT (arg
) < 0
1983 ? XINT (arg
) | INT_MIN
1984 : XINT (arg
) & INT_MAX
);
1985 else if (noninteractive
&& (fflush (stdout
) || ferror (stdout
)))
1986 exit_code
= EXIT_FAILURE
;
1988 exit_code
= EXIT_SUCCESS
;
1993 /* Perform an orderly shutdown of Emacs. Autosave any modified
1994 buffers, kill any child processes, clean up the terminal modes (if
1995 we're in the foreground), and other stuff like that. Don't perform
1996 any redisplay; this may be called when Emacs is shutting down in
1997 the background, or after its X connection has died.
1999 If SIG is a signal number, print a message for it.
2001 This is called by fatal signal handlers, X protocol error handlers,
2005 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2007 /* Prevent running of hooks from now on. */
2010 /* Don't update display from now on. */
2011 Vinhibit_redisplay
= Qt
;
2013 /* If we are controlling the terminal, reset terminal modes. */
2016 int pgrp
= EMACS_GETPGRP (0);
2017 int tpgrp
= tcgetpgrp (0);
2018 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2020 reset_all_sys_modes ();
2021 if (sig
&& sig
!= SIGTERM
)
2022 fprintf (stderr
, "Fatal error (%d)", sig
);
2027 reset_all_sys_modes ();
2030 stuff_buffered_input (stuff
);
2032 inhibit_sentinels
= 1;
2033 kill_buffer_processes (Qnil
);
2034 Fdo_auto_save (Qt
, Qnil
);
2036 #ifdef CLASH_DETECTION
2037 unlock_all_files ();
2040 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2041 #ifdef HAVE_X_WINDOWS
2042 /* It's not safe to call intern here. Maybe we are crashing. */
2043 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2044 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2045 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2047 Fx_close_current_connection ();
2048 #endif /* HAVE_X_WINDOWS */
2052 /* There is a tendency for a SIGIO signal to arrive within exit,
2053 and cause a SIGHUP because the input descriptor is already closed. */
2055 signal (SIGIO
, SIG_IGN
);
2062 /* Do this only if terminating normally, we want glyph matrices
2063 etc. in a core dump. */
2064 if (sig
== 0 || sig
== SIGTERM
)
2066 check_glyph_memory ();
2067 check_message_stack ();
2075 ns_term_shutdown (sig
);
2079 xml_cleanup_parser ();
2089 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2090 doc
: /* Dump current state of Emacs into executable file FILENAME.
2091 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2092 This is used in the file `loadup.el' when building Emacs.
2094 You must run Emacs in batch mode in order to dump it. */)
2095 (Lisp_Object filename
, Lisp_Object symfile
)
2099 ptrdiff_t count
= SPECPDL_INDEX ();
2103 if (! noninteractive
)
2104 error ("Dumping Emacs works only in batch mode");
2108 /* Warn if the gap between BSS end and heap start is larger than this. */
2109 # define MAX_HEAP_BSS_DIFF (1024*1024)
2111 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2113 fprintf (stderr
, "**************************************************\n");
2114 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2115 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2117 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2118 fprintf (stderr
, "fail because of this. See the section about\n");
2119 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2120 fprintf (stderr
, "**************************************************\n");
2122 #endif /* GNU_LINUX */
2124 /* Bind `command-line-processed' to nil before dumping,
2125 so that the dumped Emacs will process its command line
2126 and set up to work with X windows if appropriate. */
2127 symbol
= intern ("command-line-processed");
2128 specbind (symbol
, Qnil
);
2130 CHECK_STRING (filename
);
2131 filename
= Fexpand_file_name (filename
, Qnil
);
2132 if (!NILP (symfile
))
2134 CHECK_STRING (symfile
);
2135 if (SCHARS (symfile
))
2136 symfile
= Fexpand_file_name (symfile
, Qnil
);
2140 Vpurify_flag
= Qnil
;
2143 set_time_zone_rule (dump_tz
);
2144 #ifndef LOCALTIME_CACHE
2145 /* Force a tz reload, since set_time_zone_rule doesn't. */
2151 /* Tell malloc where start of impure now is. */
2152 /* Also arrange for warnings when nearly out of space. */
2153 #ifndef SYSTEM_MALLOC
2155 /* On Windows, this was done before dumping, and that once suffices.
2156 Meanwhile, my_edata is not valid on Windows. */
2158 extern char my_edata
[];
2159 memory_warnings (my_edata
, malloc_warning
);
2161 #endif /* not WINDOWSNT */
2162 #if defined (HAVE_PTHREAD) && !defined SYNC_INPUT
2163 /* Pthread may call malloc before main, and then we will get an endless
2164 loop, because pthread_self (see alloc.c) calls malloc the first time
2165 it is called on some systems. */
2166 reset_malloc_hooks ();
2168 #endif /* not SYSTEM_MALLOC */
2169 #ifdef DOUG_LEA_MALLOC
2170 malloc_state_ptr
= malloc_get_state ();
2173 #ifdef USE_MMAP_FOR_BUFFERS
2176 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2177 #ifdef USE_MMAP_FOR_BUFFERS
2180 #ifdef DOUG_LEA_MALLOC
2181 free (malloc_state_ptr
);
2186 return unbind_to (count
, Qnil
);
2189 #endif /* not CANNOT_DUMP */
2192 /* Recover from setlocale (LC_ALL, ""). */
2196 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2197 so that numbers are read and printed properly for Emacs Lisp. */
2198 setlocale (LC_NUMERIC
, "C");
2201 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2204 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2206 if (! EQ (*plocale
, desired_locale
))
2208 *plocale
= desired_locale
;
2209 setlocale (category
, (STRINGP (desired_locale
)
2210 ? SSDATA (desired_locale
)
2215 /* Set system time locale to match Vsystem_time_locale, if possible. */
2217 synchronize_system_time_locale (void)
2219 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2220 Vsystem_time_locale
);
2223 /* Set system messages locale to match Vsystem_messages_locale, if
2226 synchronize_system_messages_locale (void)
2229 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2230 Vsystem_messages_locale
);
2233 #endif /* HAVE_SETLOCALE */
2237 decode_env_path (const char *evarname
, const char *defalt
)
2239 const char *path
, *p
;
2240 Lisp_Object lpath
, element
, tem
;
2243 const char *emacs_dir
= egetenv ("emacs_dir");
2244 static const char *emacs_dir_env
= "%emacs_dir%/";
2245 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2248 /* It's okay to use getenv here, because this function is only used
2249 to initialize variables when Emacs starts up, and isn't called
2252 path
= getenv (evarname
);
2263 /* Ensure values from the environment use the proper directory separator. */
2266 char *path_copy
= alloca (strlen (path
) + 1);
2267 strcpy (path_copy
, path
);
2268 dostounix_filename (path_copy
);
2275 p
= strchr (path
, SEPCHAR
);
2277 p
= path
+ strlen (path
);
2278 element
= (p
- path
? make_string (path
, p
- path
)
2279 : build_string ("."));
2281 /* Relative file names in the default path are interpreted as
2282 being relative to $emacs_dir. */
2283 if (emacs_dir
&& defaulted
2284 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2285 element
= Fexpand_file_name (Fsubstring (element
,
2286 make_number (emacs_dir_len
),
2288 build_string (emacs_dir
));
2291 /* Add /: to the front of the name
2292 if it would otherwise be treated as magic. */
2293 tem
= Ffind_file_name_handler (element
, Qt
);
2295 /* However, if the handler says "I'm safe",
2296 don't bother adding /:. */
2300 prop
= Fget (tem
, intern ("safe-magic"));
2306 element
= concat2 (build_string ("/:"), element
);
2308 lpath
= Fcons (element
, lpath
);
2314 return Fnreverse (lpath
);
2317 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2318 doc
: /* Return non-nil if the current emacs process is a daemon.
2319 If the daemon was given a name argument, return that name. */)
2324 return build_string (daemon_name
);
2331 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2332 doc
: /* Mark the Emacs daemon as being initialized.
2333 This finishes the daemonization process by doing the other half of detaching
2334 from the parent process and its tty file descriptors. */)
2341 error ("This function can only be called if emacs is run as a daemon");
2343 if (daemon_pipe
[1] < 0)
2344 error ("The daemon has already been initialized");
2346 if (NILP (Vafter_init_time
))
2347 error ("This function can only be called after loading the init files");
2349 /* Get rid of stdin, stdout and stderr. */
2350 nfd
= open ("/dev/null", O_RDWR
);
2352 err
|= dup2 (nfd
, 0) < 0;
2353 err
|= dup2 (nfd
, 1) < 0;
2354 err
|= dup2 (nfd
, 2) < 0;
2355 err
|= close (nfd
) != 0;
2357 /* Closing the pipe will notify the parent that it can exit.
2358 FIXME: In case some other process inherited the pipe, closing it here
2359 won't notify the parent because it's still open elsewhere, so we
2360 additionally send a byte, just to make sure the parent really exits.
2361 Instead, we should probably close the pipe in start-process and
2362 call-process to make sure the pipe is never inherited by
2364 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2365 err
|= close (daemon_pipe
[1]) != 0;
2366 /* Set it to an invalid value so we know we've already run this function. */
2367 daemon_pipe
[1] = -1;
2370 error ("I/O error during daemon initialization");
2375 syms_of_emacs (void)
2377 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2378 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2379 DEFSYM (Qkill_emacs
, "kill-emacs");
2382 defsubr (&Sdump_emacs
);
2385 defsubr (&Skill_emacs
);
2387 defsubr (&Sinvocation_name
);
2388 defsubr (&Sinvocation_directory
);
2389 defsubr (&Sdaemonp
);
2390 defsubr (&Sdaemon_initialized
);
2392 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2393 doc
: /* Args passed by shell to Emacs, as a list of strings.
2394 Many arguments are deleted from the list as they are processed. */);
2396 DEFVAR_LISP ("system-type", Vsystem_type
,
2397 doc
: /* The value is a symbol indicating the type of operating system you are using.
2399 `gnu' compiled for a GNU Hurd system.
2400 `gnu/linux' compiled for a GNU/Linux system.
2401 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2402 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2403 `ms-dos' compiled as an MS-DOS application.
2404 `windows-nt' compiled as a native W32 application.
2405 `cygwin' compiled using the Cygwin library.
2406 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2407 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2408 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2409 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2411 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2412 doc
: /* Value is string indicating configuration Emacs was built for.
2413 On MS-Windows, the value reflects the OS flavor and version on which
2414 Emacs is running. */);
2415 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2417 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2418 doc
: /* String containing the configuration options Emacs was built with. */);
2419 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2421 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2422 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2424 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2425 doc
: /* Hook run when `kill-emacs' is called.
2426 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2427 in other similar situations), functions placed on this hook should not
2428 expect to be able to interact with the user. To ask for confirmation,
2429 see `kill-emacs-query-functions' instead.
2431 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2432 `noninteractive' was non-nil. */);
2433 Vkill_emacs_hook
= Qnil
;
2435 DEFVAR_LISP ("path-separator", Vpath_separator
,
2436 doc
: /* String containing the character that separates directories in
2437 search paths, such as PATH and other similar environment variables. */);
2440 Vpath_separator
= make_string (&c
, 1);
2443 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2444 doc
: /* The program name that was used to run Emacs.
2445 Any directory names are omitted. */);
2447 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2448 doc
: /* The directory in which the Emacs executable was found, to run it.
2449 The value is nil if that directory's name is not known. */);
2451 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2452 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2453 In an installed Emacs, this is normally nil. It is non-nil if
2454 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2455 within the variable `invocation-directory' or its parent. For example,
2456 this is the case when running an uninstalled Emacs executable from its
2457 build directory. */);
2458 Vinstallation_directory
= Qnil
;
2460 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2461 doc
: /* System locale for messages. */);
2462 Vsystem_messages_locale
= Qnil
;
2464 DEFVAR_LISP ("previous-system-messages-locale",
2465 Vprevious_system_messages_locale
,
2466 doc
: /* Most recently used system locale for messages. */);
2467 Vprevious_system_messages_locale
= Qnil
;
2469 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2470 doc
: /* System locale for time. */);
2471 Vsystem_time_locale
= Qnil
;
2473 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2474 doc
: /* Most recently used system locale for time. */);
2475 Vprevious_system_time_locale
= Qnil
;
2477 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2478 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2479 Vbefore_init_time
= Qnil
;
2481 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2482 doc
: /* Value of `current-time' after loading the init files.
2483 This is nil during initialization. */);
2484 Vafter_init_time
= Qnil
;
2486 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2487 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2488 inhibit_x_resources
= 0;
2490 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2491 doc
: /* Short copyright string for this version of Emacs. */);
2492 Vemacs_copyright
= build_string (emacs_copyright
);
2494 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2495 doc
: /* Version numbers of this version of Emacs. */);
2496 Vemacs_version
= build_string (emacs_version
);
2498 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2499 doc
: /* Alist of dynamic libraries vs external files implementing them.
2500 Each element is a list (LIBRARY FILE...), where the car is a symbol
2501 representing a supported external library, and the rest are strings giving
2502 alternate filenames for that library.
2504 Emacs tries to load the library from the files in the order they appear on
2505 the list; if none is loaded, the running session of Emacs won't have access
2508 Note that image types `pbm' and `xbm' do not need entries in this variable
2509 because they do not depend on external libraries and are always available.
2511 Also note that this is not a generic facility for accessing external
2512 libraries; only those already known by Emacs will be loaded. */);
2513 Vdynamic_library_alist
= Qnil
;
2514 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2516 /* Make sure IS_DAEMON starts up as false. */