1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2014
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/>. */
21 #define INLINE EXTERN_INLINE
27 #include <sys/types.h>
31 #include <close-stream.h>
38 #include <sys/socket.h>
44 #if defined WINDOWSNT || defined HAVE_NTGUI
45 #include "w32select.h"
47 #include "w32common.h"
54 #ifdef HAVE_WINDOW_SYSTEM
56 #endif /* HAVE_WINDOW_SYSTEM */
58 #ifdef NS_IMPL_GNUSTEP
59 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
60 #include <GNUstepBase/GSConfig.h>
64 #include "intervals.h"
65 #include "character.h"
71 #include "blockinput.h"
72 #include "syssignal.h"
75 #include "termhooks.h"
80 #include "composite.h"
81 #include "dispextern.h"
89 #if (defined PROFILING \
90 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
91 # include <sys/gmon.h>
92 extern void moncontrol (int mode
);
100 #include <sys/time.h>
101 #include <sys/resource.h>
104 #ifdef HAVE_PERSONALITY_LINUX32
105 #include <sys/personality.h>
108 static const char emacs_version
[] = VERSION
;
109 static const char emacs_copyright
[] = COPYRIGHT
;
111 /* Empty lisp strings. To avoid having to build any others. */
112 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
115 /* Cache for externally loaded libraries. */
116 Lisp_Object Vlibrary_cache
;
119 /* Set after Emacs has started up the first time.
120 Prevents reinitialization of the Lisp world and keymaps
121 on subsequent starts. */
124 /* Set to true if this instance of Emacs might dump. */
128 extern void unexec_init_emacs_zone (void);
131 #ifdef DOUG_LEA_MALLOC
132 /* Preserves a pointer to the memory allocated that copies that
133 static data inside glibc's malloc. */
134 static void *malloc_state_ptr
;
135 /* From glibc, a routine that returns a copy of the malloc internal state. */
136 extern void *malloc_get_state (void);
137 /* From glibc, a routine that overwrites the malloc internal state. */
138 extern int malloc_set_state (void*);
139 /* True if the MALLOC_CHECK_ environment variable was set while
140 dumping. Used to work around a bug in glibc's malloc. */
141 static bool malloc_using_checking
;
142 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
143 extern void malloc_enable_thread (void);
146 Lisp_Object Qfile_name_handler_alist
;
148 Lisp_Object Qrisky_local_variable
;
150 Lisp_Object Qkill_emacs
;
151 static Lisp_Object Qkill_emacs_hook
;
153 /* If true, Emacs should not attempt to use a window-specific code,
154 but instead should use the virtual terminal under which it was started. */
155 bool inhibit_window_system
;
157 /* If true, a filter or a sentinel is running. Tested to save the match
158 data on the first attempt to change it inside asynchronous code. */
159 bool running_asynch_code
;
161 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
162 /* If true, -d was specified, meaning we're using some window system. */
166 /* An address near the bottom of the stack.
167 Tells GC how to save a copy of the stack. */
170 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
171 /* The address where the heap starts (from the first sbrk (0) call). */
172 static void *my_heap_start
;
176 /* The gap between BSS end and heap start as far as we can tell. */
177 static uprintmax_t heap_bss_diff
;
180 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
183 On Cocoa, CoreFoundation lib fails in forked process:
184 http://developer.apple.com/ReleaseNotes/
185 CoreFoundation/CoreFoundation.html)
187 On Windows, a Cygwin fork child cannot access the USER subsystem.
189 We mark being in the exec'd process by a daemon name argument of
190 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
191 NAME is the original daemon name, if any. */
192 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
193 # define DAEMON_MUST_EXEC
196 /* True means running Emacs without interactive terminal. */
199 /* True means remove site-lisp directories from load-path. */
202 /* Name for the server started by the daemon.*/
203 static char *daemon_name
;
205 /* Pipe used to send exit notification to the daemon parent at
209 /* Save argv and argc. */
213 static void sort_args (int argc
, char **argv
);
214 static void syms_of_emacs (void);
216 /* C89 needs each string be at most 509 characters, so the usage
217 strings below are split to not overflow this limit. */
218 static char const *const usage_message
[] =
221 Run Emacs, the extensible, customizable, self-documenting real-time\n\
222 display editor. The recommended way to start Emacs for normal editing\n\
223 is with no options at all.\n\
225 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
226 read the main documentation for these command-line arguments.\n\
228 Initialization options:\n\
232 --batch do not do interactive display; implies -q\n\
233 --chdir DIR change to directory DIR\n\
234 --daemon start a server in the background\n\
235 --debug-init enable Emacs Lisp debugger for init file\n\
236 --display, -d DISPLAY use X server DISPLAY\n\
239 --no-desktop do not load a saved desktop\n\
240 --no-init-file, -q load neither ~/.emacs nor default.el\n\
241 --no-shared-memory, -nl do not use shared memory\n\
242 --no-site-file do not load site-start.el\n\
243 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
244 --no-splash do not display a splash screen on startup\n\
245 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
248 --quick, -Q equivalent to:\n\
249 -q --no-site-file --no-site-lisp --no-splash\n\
250 --script FILE run FILE as an Emacs Lisp script\n\
251 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
252 --user, -u USER load ~USER/.emacs instead of your own\n\
258 FILE visit FILE using find-file\n\
259 +LINE go to line LINE in next FILE\n\
260 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
261 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
262 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
263 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
266 --file FILE visit FILE using find-file\n\
267 --find-file FILE visit FILE using find-file\n\
268 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
269 --insert FILE insert contents of FILE into current buffer\n\
270 --kill exit without asking for confirmation\n\
271 --load, -l FILE load Emacs Lisp FILE using the load function\n\
272 --visit FILE visit FILE using find-file\n\
278 --background-color, -bg COLOR window background color\n\
279 --basic-display, -D disable many display features;\n\
280 used for debugging Emacs\n\
281 --border-color, -bd COLOR main border color\n\
282 --border-width, -bw WIDTH width of main border\n\
285 --color, --color=MODE override color mode for character terminals;\n\
286 MODE defaults to `auto', and\n\
287 can also be `never', `always',\n\
288 or a mode name like `ansi8'\n\
289 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
290 --font, -fn FONT default font; must be fixed-width\n\
291 --foreground-color, -fg COLOR window foreground color\n\
294 --fullheight, -fh make the first frame high as the screen\n\
295 --fullscreen, -fs make the first frame fullscreen\n\
296 --fullwidth, -fw make the first frame wide as the screen\n\
297 --maximized, -mm make the first frame maximized\n\
298 --geometry, -g GEOMETRY window geometry\n\
301 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
302 --iconic start Emacs in iconified state\n\
303 --internal-border, -ib WIDTH width between text and main border\n\
304 --line-spacing, -lsp PIXELS additional space to put between lines\n\
305 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
306 --name NAME title for initial Emacs frame\n\
309 --no-blinking-cursor, -nbc disable blinking cursor\n\
310 --reverse-video, -r, -rv switch foreground and background\n\
311 --title, -T TITLE title for initial Emacs frame\n\
312 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
313 --xrm XRESOURCES set additional X resources\n\
314 --parent-id XID set parent window\n\
315 --help display this help and exit\n\
316 --version output version information and exit\n\
320 You can generally also specify long option names with a single -; for\n\
321 example, -batch as well as --batch. You can use any unambiguous\n\
322 abbreviation for a --option.\n\
324 Various environment variables and window system resources also affect\n\
325 the operation of Emacs. See the main documentation.\n\
327 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
328 section of the Emacs manual or the file BUGS.\n"
332 /* True if handling a fatal error already. */
333 bool fatal_error_in_progress
;
336 /* NS autrelease pool, for memory management. */
337 static void *ns_pool
;
342 setlocale (int cat
, char const *locale
)
349 /* Report a fatal error due to signal SIG, output a backtrace of at
350 most BACKTRACE_LIMIT lines, and exit. */
352 terminate_due_to_signal (int sig
, int backtrace_limit
)
354 signal (sig
, SIG_DFL
);
355 totally_unblock_input ();
357 /* If fatal error occurs in code below, avoid infinite recursion. */
358 if (! fatal_error_in_progress
)
360 fatal_error_in_progress
= 1;
362 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
363 Fkill_emacs (make_number (sig
));
365 shut_down_emacs (sig
, Qnil
);
366 emacs_backtrace (backtrace_limit
);
369 /* Signal the same code; this time it will really be fatal.
370 Since we're in a signal handler, the signal is blocked, so we
371 have to unblock it if we want to really receive it. */
375 sigemptyset (&unblocked
);
376 sigaddset (&unblocked
, sig
);
377 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
383 /* This shouldn't be executed, but it prevents a warning. */
387 /* Code for dealing with Lisp access to the Unix command line. */
390 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
393 Lisp_Object name
, dir
, handler
;
394 ptrdiff_t count
= SPECPDL_INDEX ();
395 Lisp_Object raw_name
;
401 /* Must use argv[0] converted to UTF-8, as it begets many standard
402 file and directory names. */
404 char argv0
[MAX_UTF8_PATH
];
406 if (filename_from_ansi (argv
[0], argv0
) == 0)
407 raw_name
= build_unibyte_string (argv0
);
409 raw_name
= build_unibyte_string (argv
[0]);
412 raw_name
= build_unibyte_string (argv
[0]);
415 /* Add /: to the front of the name
416 if it would otherwise be treated as magic. */
417 handler
= Ffind_file_name_handler (raw_name
, Qt
);
418 if (! NILP (handler
))
419 raw_name
= concat2 (build_string ("/:"), raw_name
);
421 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
422 Vinvocation_directory
= Ffile_name_directory (raw_name
);
424 /* If we got no directory in argv[0], search PATH to find where
425 Emacs actually came from. */
426 if (NILP (Vinvocation_directory
))
429 int yes
= openp (Vexec_path
, Vinvocation_name
,
430 Vexec_suffixes
, &found
, make_number (X_OK
), false);
433 /* Add /: to the front of the name
434 if it would otherwise be treated as magic. */
435 handler
= Ffind_file_name_handler (found
, Qt
);
436 if (! NILP (handler
))
437 found
= concat2 (build_string ("/:"), found
);
438 Vinvocation_directory
= Ffile_name_directory (found
);
442 if (!NILP (Vinvocation_directory
)
443 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
444 /* Emacs was started with relative path, like ./emacs.
448 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
450 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
453 Vinstallation_directory
= Qnil
;
455 if (!NILP (Vinvocation_directory
))
457 dir
= Vinvocation_directory
;
459 /* If we are running from the build directory, set DIR to the
460 src subdirectory of the Emacs tree, like on Posix
462 if (SBYTES (dir
) > sizeof ("/i386/") - 1
463 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
465 dir
= Fexpand_file_name (build_string ("../.."), dir
);
466 #else /* !WINDOWSNT */
468 name
= Fexpand_file_name (Vinvocation_name
, dir
);
471 Lisp_Object tem
, lib_src_exists
;
472 Lisp_Object etc_exists
, info_exists
;
474 /* See if dir contains subdirs for use by Emacs.
475 Check for the ones that would exist in a build directory,
476 not including lisp and info. */
477 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
478 lib_src_exists
= Ffile_exists_p (tem
);
481 /* MSDOS installations frequently remove lib-src, but we still
482 must set installation-directory, or else info won't find
483 its files (it uses the value of installation-directory). */
484 tem
= Fexpand_file_name (build_string ("info"), dir
);
485 info_exists
= Ffile_exists_p (tem
);
490 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
492 tem
= Fexpand_file_name (build_string ("etc"), dir
);
493 etc_exists
= Ffile_exists_p (tem
);
494 if (!NILP (etc_exists
))
496 Vinstallation_directory
497 = Ffile_name_as_directory (dir
);
502 /* See if dir's parent contains those subdirs. */
503 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
504 lib_src_exists
= Ffile_exists_p (tem
);
508 /* See the MSDOS commentary above. */
509 tem
= Fexpand_file_name (build_string ("../info"), dir
);
510 info_exists
= Ffile_exists_p (tem
);
515 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
517 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
518 etc_exists
= Ffile_exists_p (tem
);
519 if (!NILP (etc_exists
))
521 tem
= Fexpand_file_name (build_string (".."), dir
);
522 Vinstallation_directory
523 = Ffile_name_as_directory (tem
);
528 /* If the Emacs executable is actually a link,
529 next try the dir that the link points into. */
530 tem
= Ffile_symlink_p (name
);
533 name
= Fexpand_file_name (tem
, dir
);
534 dir
= Ffile_name_directory (name
);
541 Vcommand_line_args
= Qnil
;
543 for (i
= argc
- 1; i
>= 0; i
--)
545 if (i
== 0 || i
> skip_args
)
546 /* For the moment, we keep arguments as is in unibyte strings.
547 They are decoded in the function command-line after we know
548 locale-coding-system. */
550 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
553 unbind_to (count
, Qnil
);
556 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
557 doc
: /* Return the program name that was used to run Emacs.
558 Any directory names are omitted. */)
561 return Fcopy_sequence (Vinvocation_name
);
564 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
566 doc
: /* Return the directory name in which the Emacs executable was located. */)
569 return Fcopy_sequence (Vinvocation_directory
);
574 /* A valid but unlikely value for the TZ environment value.
575 It is OK (though a bit slower) if the user actually chooses this value. */
576 static char const dump_tz
[] = "UtC0";
579 /* Test whether the next argument in ARGV matches SSTR or a prefix of
580 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
581 (the argument is supposed to have a value) store in *VALPTR either
582 the next argument or the portion of this one after the equal sign.
583 ARGV is read starting at position *SKIPPTR; this index is advanced
584 by the number of arguments used.
586 Too bad we can't just use getopt for all of this, but we don't have
587 enough information to do it right. */
590 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
591 int minlen
, char **valptr
, int *skipptr
)
597 /* Don't access argv[argc]; give up in advance. */
598 if (argc
<= *skipptr
+ 1)
601 arg
= argv
[*skipptr
+1];
604 if (strcmp (arg
, sstr
) == 0)
608 *valptr
= argv
[*skipptr
+2];
615 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
616 ? p
- arg
: strlen (arg
));
617 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
619 else if (valptr
== NULL
)
630 else if (argv
[*skipptr
+2] != NULL
)
632 *valptr
= argv
[*skipptr
+2];
642 #ifdef DOUG_LEA_MALLOC
644 /* malloc can be invoked even before main (e.g. by the dynamic
645 linker), so the dumped malloc state must be restored as early as
646 possible using this special hook. */
649 malloc_initialize_hook (void)
653 if (!malloc_using_checking
)
654 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
655 ignored if the heap to be restored was constructed without
656 malloc checking. Can't use unsetenv, since that calls malloc. */
660 for (p
= environ
; p
&& *p
; p
++)
661 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
670 malloc_set_state (malloc_state_ptr
);
671 #ifndef XMALLOC_OVERRUN_CHECK
672 free (malloc_state_ptr
);
677 if (my_heap_start
== 0)
678 my_heap_start
= sbrk (0);
679 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
683 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
685 #endif /* DOUG_LEA_MALLOC */
687 /* Close standard output and standard error, reporting any write
688 errors as best we can. This is intended for use with atexit. */
690 close_output_streams (void)
692 if (close_stream (stdout
) != 0)
694 emacs_perror ("Write error to standard output");
695 _exit (EXIT_FAILURE
);
698 if (close_stream (stderr
) != 0)
699 _exit (EXIT_FAILURE
);
704 main (int argc
, char **argv
)
709 char stack_bottom_variable
;
710 bool do_initial_setlocale
;
713 #ifdef HAVE_SETRLIMIT
719 #ifdef DAEMON_MUST_EXEC
724 /* If we use --chdir, this records the original directory. */
725 char *original_pwd
= 0;
731 #ifdef G_SLICE_ALWAYS_MALLOC
732 /* This is used by the Cygwin build. It's not needed starting with
733 cygwin-1.7.24, but it doesn't do any harm. */
734 xputenv ("G_SLICE=always-malloc");
738 might_dump
= !initialized
;
744 extern char my_endbss
[];
745 extern char *my_endbss_static
;
747 if (my_heap_start
== 0)
748 my_heap_start
= sbrk (0);
750 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
754 #if defined WINDOWSNT || defined HAVE_NTGUI
755 /* Set global variables used to detect Windows version. Do this as
756 early as possible. (unexw32.c calls this function as well, but
757 the additional call here is harmless.) */
758 cache_system_info ();
760 /* On Windows 9X, we have to load UNICOWS.DLL as early as possible,
761 to have non-stub implementations of APIs we need to convert file
762 names between UTF-8 and the system's ANSI codepage. */
763 maybe_load_unicows_dll ();
767 #ifdef RUN_TIME_REMAP
769 run_time_remap (argv
[0]);
772 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
775 unexec_init_emacs_zone ();
778 atexit (close_output_streams
);
780 sort_args (argc
, argv
);
782 while (argv
[argc
]) argc
++;
784 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
786 const char *version
, *copyright
;
789 Lisp_Object tem
, tem2
;
790 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
791 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
794 fprintf (stderr
, "Invalid value of `emacs-version'\n");
799 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
804 version
= SSDATA (tem
);
805 copyright
= SSDATA (tem2
);
810 version
= emacs_version
;
811 copyright
= emacs_copyright
;
813 printf ("GNU Emacs %s\n", version
);
814 printf ("%s\n", copyright
);
815 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
816 printf ("You may redistribute copies of Emacs\n");
817 printf ("under the terms of the GNU General Public License.\n");
818 printf ("For more information about these matters, ");
819 printf ("see the file named COPYING.\n");
823 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
826 /* argv[] array is kept in its original ANSI codepage encoding,
827 we need to convert to UTF-8, for chdir to work. */
828 char newdir
[MAX_UTF8_PATH
];
830 filename_from_ansi (ch_to_dir
, newdir
);
833 original_pwd
= get_current_dir_name ();
834 if (chdir (ch_to_dir
) != 0)
836 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
837 argv
[0], ch_to_dir
, strerror (errno
));
842 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
843 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
845 #ifdef HAVE_PERSONALITY_LINUX32
846 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
848 /* Set this so we only do this once. */
849 xputenv ("EMACS_HEAP_EXEC=true");
851 /* A flag to turn off address randomization which is introduced
852 in linux kernel shipped with fedora core 4 */
853 #define ADD_NO_RANDOMIZE 0x0040000
854 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
855 #undef ADD_NO_RANDOMIZE
857 execvp (argv
[0], argv
);
859 /* If the exec fails, try to dump anyway. */
860 emacs_perror (argv
[0]);
862 #endif /* HAVE_PERSONALITY_LINUX32 */
864 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
865 /* Extend the stack space available.
866 Don't do that if dumping, since some systems (e.g. DJGPP)
867 might define a smaller stack limit at that time. */
870 && (!noninteractive
|| initialized
)
872 && !getrlimit (RLIMIT_STACK
, &rlim
))
875 extern size_t re_max_failures
;
876 /* Approximate the amount regex.c needs per unit of re_max_failures. */
877 int ratio
= 20 * sizeof (char *);
878 /* Then add 33% to cover the size of the smaller stacks that regex.c
879 successively allocates and discards, on its way to the maximum. */
881 /* Add in some extra to cover
882 what we're likely to use for other reasons. */
883 newlim
= re_max_failures
* ratio
+ 200000;
885 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
886 stack allocation routine for new process that the allocation
887 fails if stack limit is not on page boundary. So, round up the
888 new limit to page boundary. */
889 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
891 if (newlim
> rlim
.rlim_max
)
893 newlim
= rlim
.rlim_max
;
894 /* Don't let regex.c overflow the stack we have. */
895 re_max_failures
= (newlim
- 200000) / ratio
;
897 if (rlim
.rlim_cur
< newlim
)
898 rlim
.rlim_cur
= newlim
;
900 setrlimit (RLIMIT_STACK
, &rlim
);
902 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
904 /* Record (approximately) where the stack begins. */
905 stack_bottom
= &stack_bottom_variable
;
909 #ifndef SYSTEM_MALLOC
910 /* Arrange to get warning messages as memory fills up. */
911 memory_warnings (0, malloc_warning
);
913 /* Call malloc at least once, to run malloc_initialize_hook.
914 Also call realloc and free for consistency. */
915 free (realloc (malloc (4), 4));
917 #endif /* not SYSTEM_MALLOC */
919 #if defined (MSDOS) || defined (WINDOWSNT)
920 /* We do all file input/output as binary files. When we need to translate
921 newlines, we do that manually. */
923 #endif /* MSDOS || WINDOWSNT */
926 if (!isatty (fileno (stdin
)))
927 setmode (fileno (stdin
), O_BINARY
);
928 if (!isatty (fileno (stdout
)))
931 setmode (fileno (stdout
), O_BINARY
);
935 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
936 The build procedure uses this while dumping, to ensure that the
937 dumped Emacs does not have its system locale tables initialized,
938 as that might cause screwups when the dumped Emacs starts up. */
940 char *lc_all
= getenv ("LC_ALL");
941 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
944 /* Set locale now, so that initial error messages are localized properly.
945 fixup_locale must wait until later, since it builds strings. */
946 if (do_initial_setlocale
)
947 setlocale (LC_ALL
, "");
949 inhibit_window_system
= 0;
951 /* Handle the -t switch, which specifies filename to use as terminal. */
955 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
960 result
= emacs_open (term
, O_RDWR
, 0);
961 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
963 char *errstring
= strerror (errno
);
964 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
969 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
972 fprintf (stderr
, "Using %s\n", term
);
973 #ifdef HAVE_WINDOW_SYSTEM
974 inhibit_window_system
= 1; /* -t => -nw */
981 /* Command line option --no-windows is deprecated and thus not mentioned
982 in the manual and usage information. */
983 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
984 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
985 inhibit_window_system
= 1;
987 /* Handle the -batch switch, which means don't do interactive display. */
989 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
992 Vundo_outer_limit
= Qnil
;
994 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
996 noninteractive
= 1; /* Set batch mode. */
997 /* Convert --script to -scriptload, un-skip it, and sort again
998 so that it will be handled in proper sequence. */
999 /* FIXME broken for --script=FILE - is that supposed to work? */
1000 argv
[skip_args
- 1] = (char *) "-scriptload";
1002 sort_args (argc
, argv
);
1005 /* Handle the --help option, which gives a usage message. */
1006 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1009 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
1010 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
1011 fputs (usage_message
[i
], stdout
);
1015 /* Make sure IS_DAEMON starts up as false. */
1018 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
1019 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
1024 /* Start as a daemon: fork a new child process which will run the
1025 rest of the initialization code, then exit.
1027 Detaching a daemon requires the following steps:
1031 - close the tty file-descriptors
1033 We only want to do the last 2 steps once the daemon is ready to
1034 serve requests, i.e. after loading .emacs (initialization).
1035 OTOH initialization may start subprocesses (e.g. ispell) and these
1036 should be run from the proper process (the one that will end up
1037 running as daemon) and with the proper "session id" in order for
1038 them to keep working after detaching, so fork and setsid need to be
1039 performed before initialization.
1041 We want to avoid exiting before the server socket is ready, so
1042 use a pipe for synchronization. The parent waits for the child
1043 to close its end of the pipe (using `daemon-initialized')
1045 if (emacs_pipe (daemon_pipe
) != 0)
1047 fprintf (stderr
, "Cannot pipe!\n");
1051 #ifndef DAEMON_MUST_EXEC
1053 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1054 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1055 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1056 #endif /* USE_GTK */
1058 #else /* DAEMON_MUST_EXEC */
1059 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1060 f
= fork (); /* in orig */
1062 f
= 0; /* in exec'd */
1063 #endif /* !DAEMON_MUST_EXEC */
1069 /* Close unused writing end of the pipe. */
1070 emacs_close (daemon_pipe
[1]);
1072 /* Just wait for the child to close its end of the pipe. */
1075 retval
= read (daemon_pipe
[0], &buf
, 1);
1077 while (retval
== -1 && errno
== EINTR
);
1081 fprintf (stderr
, "Error reading status from child\n");
1084 else if (retval
== 0)
1086 fprintf (stderr
, "Error: server did not start correctly\n");
1090 emacs_close (daemon_pipe
[0]);
1095 emacs_perror ("fork");
1096 exit (EXIT_CANCELED
);
1099 #ifdef DAEMON_MUST_EXEC
1101 /* In orig process, forked as child, OR in exec'd. */
1102 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1103 { /* In orig, child: now exec w/special daemon name. */
1106 snprintf (fdStr
, sizeof fdStr
,
1107 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1108 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1110 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1112 fprintf (stderr
, "daemon: child name too long\n");
1113 exit (EXIT_CANNOT_INVOKE
);
1116 argv
[skip_args
] = fdStr
;
1118 fcntl (daemon_pipe
[0], F_SETFD
, 0);
1119 fcntl (daemon_pipe
[1], F_SETFD
, 0);
1120 execvp (argv
[0], argv
);
1121 emacs_perror (argv
[0]);
1122 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1125 /* In exec'd: parse special dname into pipe and name info. */
1126 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1127 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1129 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1130 exit (EXIT_CANNOT_INVOKE
);
1132 dname_arg2
[0] = '\0';
1133 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1135 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1136 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1138 #endif /* DAEMON_MUST_EXEC */
1141 daemon_name
= xstrdup (dname_arg
);
1142 /* Close unused reading end of the pipe. */
1143 emacs_close (daemon_pipe
[0]);
1147 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1152 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1153 # ifndef CANNOT_DUMP
1154 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1155 that causes an infinite recursive loop with FreeBSD. But do make
1156 it thread-safe when creating emacs, otherwise bootstrap-emacs
1157 fails on Cygwin. See Bug#14569. */
1158 if (!noninteractive
|| initialized
)
1160 malloc_enable_thread ();
1163 init_signals (dumping
);
1165 noninteractive1
= noninteractive
;
1167 /* Perform basic initializations (not merely interning symbols). */
1174 init_charset_once ();
1175 init_coding_once ();
1176 init_syntax_once (); /* Create standard syntax table. */
1177 init_category_once (); /* Create standard category table. */
1178 init_casetab_once (); /* Must be done before init_buffer_once. */
1179 init_buffer_once (); /* Create buffer table and some buffers. */
1180 init_minibuf_once (); /* Create list of minibuffers. */
1181 /* Must precede init_window_once. */
1183 /* Call syms_of_xfaces before init_window_once because that
1184 function creates Vterminal_frame. Termcap frames now use
1185 faces, and the face implementation uses some symbols as
1188 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1189 be better to arrange things not to have this dependency. */
1191 /* Call syms_of_keyboard before init_window_once because
1192 keyboard sets up symbols that include some face names that
1193 the X support will want to use. This can happen when
1194 CANNOT_DUMP is defined. */
1195 syms_of_keyboard ();
1197 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1199 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1201 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1203 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1205 /* Before syms_of_coding because it initializes Qcharsetp. */
1207 /* Before init_window_once, because it sets up the
1208 Vcoding_system_hash_table. */
1209 syms_of_coding (); /* This should be after syms_of_fileio. */
1211 init_window_once (); /* Init the window system. */
1212 #ifdef HAVE_WINDOW_SYSTEM
1213 init_fringe_once (); /* Swap bitmaps if necessary. */
1214 #endif /* HAVE_WINDOW_SYSTEM */
1219 if (do_initial_setlocale
)
1222 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1223 Vsystem_time_locale
= Vprevious_system_time_locale
;
1228 running_asynch_code
= 0;
1232 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1235 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1238 ns_pool
= ns_alloc_autorelease_pool ();
1239 #ifdef NS_IMPL_GNUSTEP
1240 /* GNUstep stupidly resets our locale settings after we made them. */
1244 if (!noninteractive
)
1246 #ifdef NS_IMPL_COCOA
1247 /* Started from GUI? */
1248 /* FIXME: Do the right thing if getenv returns NULL, or if
1250 if (! inhibit_window_system
&& ! isatty (0))
1251 chdir (getenv ("HOME"));
1252 if (skip_args
< argc
)
1254 if (!strncmp (argv
[skip_args
], "-psn", 4))
1257 chdir (getenv ("HOME"));
1259 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1262 chdir (getenv ("HOME"));
1267 #endif /* HAVE_NS */
1269 #ifdef HAVE_X_WINDOWS
1270 /* Stupid kludge to catch command-line display spec. We can't
1271 handle this argument entirely in window system dependent code
1272 because we don't even know which window system dependent code
1273 to run until we've recognized this argument. */
1275 char *displayname
= 0;
1276 int count_before
= skip_args
;
1278 /* Skip any number of -d options, but only use the last one. */
1281 int count_before_this
= skip_args
;
1283 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1285 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1290 count_before
= count_before_this
;
1293 /* If we have the form --display=NAME,
1294 convert it into -d name.
1295 This requires inserting a new element into argv. */
1296 if (displayname
&& count_before
< skip_args
)
1298 if (skip_args
== count_before
+ 1)
1300 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1301 (argc
- (count_before
+ 2)) * sizeof *argv
);
1302 argv
[count_before
+ 2] = displayname
;
1305 argv
[count_before
+ 1] = (char *) "-d";
1310 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1311 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1315 /* Don't actually discard this arg. */
1316 skip_args
= count_before
;
1318 #else /* !HAVE_X_WINDOWS */
1321 int count_before
= skip_args
;
1323 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1324 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1327 skip_args
= count_before
;
1331 /* argmatch must not be used after here,
1332 except when building temacs
1333 because the -d argument has not been skipped in skip_args. */
1336 /* Call early 'cause init_environment needs it. */
1338 /* Set defaults for several environment variables. */
1340 init_environment (argc
, argv
, skip_args
);
1345 #ifdef HAVE_GFILENOTIFY
1346 globals_of_gfilenotify ();
1351 #ifdef HAVE_W32NOTIFY
1352 globals_of_w32notify ();
1354 /* Initialize environment from registry settings. */
1355 init_environment (argv
);
1356 init_ntproc (dumping
); /* must precede init_editfns. */
1359 /* Initialize and GC-protect Vinitial_environment and
1360 Vprocess_environment before set_initial_environment fills them
1363 syms_of_callproc ();
1364 /* egetenv is a pretty low-level facility, which may get called in
1365 many circumstances; it seems flimsy to put off initializing it
1366 until calling init_callproc. Do not do it when dumping. */
1368 set_initial_environment ();
1370 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1371 if this is not done. Do it after set_global_environment so that we
1372 don't pollute Vglobal_environment. */
1373 /* Setting LANG here will defeat the startup locale processing... */
1378 init_buffer (); /* Init default directory of main buffer. */
1380 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1382 /* Must precede init_lread. */
1383 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1387 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1388 Lisp_Object old_log_max
;
1389 old_log_max
= Vmessage_log_max
;
1390 XSETFASTINT (Vmessage_log_max
, 0);
1391 message_dolog ("", 0, 1, 0);
1392 Vmessage_log_max
= old_log_max
;
1395 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1399 /* Check to see if Emacs has been installed correctly. */
1400 check_windows_init_file ();
1403 /* Intern the names of all standard functions and variables;
1404 define standard keys. */
1408 /* The basic levels of Lisp must come first. Note that
1409 syms_of_data and some others have already been called. */
1414 syms_of_floatfns ();
1417 syms_of_bytecode ();
1419 syms_of_casefiddle ();
1421 syms_of_category ();
1423 syms_of_character ();
1430 syms_of_filelock ();
1433 /* syms_of_keymap (); */
1441 syms_of_terminal ();
1447 syms_of_textprop ();
1448 syms_of_composite ();
1451 #endif /* WINDOWSNT */
1458 #ifdef HAVE_WINDOW_SYSTEM
1461 #endif /* HAVE_WINDOW_SYSTEM */
1462 #ifdef HAVE_X_WINDOWS
1467 syms_of_xsettings ();
1474 #endif /* HAVE_X_WINDOWS */
1481 syms_of_decompress ();
1491 #endif /* HAVE_NTGUI */
1493 #if defined WINDOWSNT || defined HAVE_NTGUI
1494 syms_of_w32select ();
1501 syms_of_win16select ();
1508 syms_of_nsselect ();
1510 #endif /* HAVE_NS */
1516 #ifdef HAVE_GFILENOTIFY
1517 syms_of_gfilenotify ();
1518 #endif /* HAVE_GFILENOTIFY */
1522 #endif /* HAVE_INOTIFY */
1525 syms_of_dbusbind ();
1526 #endif /* HAVE_DBUS */
1530 #ifdef HAVE_W32NOTIFY
1531 syms_of_w32notify ();
1532 #endif /* HAVE_W32NOTIFY */
1533 #endif /* WINDOWSNT */
1535 syms_of_profiler ();
1537 keys_of_casefiddle ();
1540 keys_of_keyboard ();
1546 /* Initialization that must be done even if the global variable
1547 initialized is non zero. */
1549 globals_of_w32font ();
1550 globals_of_w32fns ();
1551 globals_of_w32menu ();
1552 #endif /* HAVE_NTGUI */
1554 #if defined WINDOWSNT || defined HAVE_NTGUI
1555 globals_of_w32select ();
1561 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1562 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1563 init_keyboard (); /* This too must precede init_sys_modes. */
1564 if (!noninteractive
)
1565 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1568 init_crit (); /* w32notify.c needs this in batch mode. */
1569 #endif /* HAVE_W32NOTIFY */
1571 #ifdef HAVE_WINDOW_SYSTEM
1573 #endif /* HAVE_WINDOW_SYSTEM */
1581 /* Handle -l loadup, args passed by Makefile. */
1582 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1585 char file_utf8
[MAX_UTF8_PATH
];
1587 if (filename_from_ansi (file
, file_utf8
) == 0)
1590 Vtop_level
= list2 (intern_c_string ("load"),
1591 build_unibyte_string (file
));
1593 /* Unless next switch is -nl, load "loadup.el" first thing. */
1595 Vtop_level
= list2 (intern_c_string ("load"),
1596 build_string ("loadup.el"));
1603 /* If the execution TZ happens to be the same as the dump TZ,
1604 change it to some other value and then change it back,
1605 to force the underlying implementation to reload the TZ info.
1606 This is needed on implementations that load TZ info from files,
1607 since the TZ file contents may differ between dump and execution. */
1608 char *tz
= getenv ("TZ");
1609 if (tz
&& !strcmp (tz
, dump_tz
))
1619 /* Set up for profiling. This is known to work on FreeBSD,
1620 GNU/Linux and MinGW. It might work on some other systems too.
1621 Give it a try and tell us if it works on your system. To compile
1622 for profiling, use the configure option --enable-profiling. */
1623 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1628 extern unsigned char etext
asm ("etext");
1634 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1643 #ifdef LOCALTIME_CACHE
1644 /* Some versions of localtime have a bug. They cache the value of the time
1645 zone rather than looking it up every time. Since localtime() is
1646 called to bolt the undumping time into the undumped emacs, this
1647 results in localtime ignoring the TZ environment variable.
1648 This flushes the new TZ value into localtime. */
1650 #endif /* defined (LOCALTIME_CACHE) */
1652 /* Enter editor command loop. This never returns. */
1658 /* Sort the args so we can find the most important ones
1659 at the beginning of argv. */
1661 /* First, here's a table of all the standard options. */
1663 struct standard_args
1666 const char *longname
;
1671 static const struct standard_args standard_args
[] =
1673 { "-version", "--version", 150, 0 },
1674 { "-chdir", "--chdir", 130, 1 },
1675 { "-t", "--terminal", 120, 1 },
1676 { "-nw", "--no-window-system", 110, 0 },
1677 { "-nw", "--no-windows", 110, 0 },
1678 { "-batch", "--batch", 100, 0 },
1679 { "-script", "--script", 100, 1 },
1680 { "-daemon", "--daemon", 99, 0 },
1681 { "-help", "--help", 90, 0 },
1682 { "-nl", "--no-loadup", 70, 0 },
1683 { "-nsl", "--no-site-lisp", 65, 0 },
1684 /* -d must come last before the options handled in startup.el. */
1685 { "-d", "--display", 60, 1 },
1686 { "-display", 0, 60, 1 },
1687 /* Now for the options handled in `command-line' (startup.el). */
1688 /* (Note that to imply -nsl, -Q is partially handled here.) */
1689 { "-Q", "--quick", 55, 0 },
1690 { "-quick", 0, 55, 0 },
1691 { "-q", "--no-init-file", 50, 0 },
1692 { "-no-init-file", 0, 50, 0 },
1693 { "-no-site-file", "--no-site-file", 40, 0 },
1694 { "-u", "--user", 30, 1 },
1695 { "-user", 0, 30, 1 },
1696 { "-debug-init", "--debug-init", 20, 0 },
1697 { "-iconic", "--iconic", 15, 0 },
1698 { "-D", "--basic-display", 12, 0},
1699 { "-basic-display", 0, 12, 0},
1700 { "-nbc", "--no-blinking-cursor", 12, 0 },
1701 /* Now for the options handled in `command-line-1' (startup.el). */
1702 { "-nbi", "--no-bitmap-icon", 10, 0 },
1703 { "-bg", "--background-color", 10, 1 },
1704 { "-background", 0, 10, 1 },
1705 { "-fg", "--foreground-color", 10, 1 },
1706 { "-foreground", 0, 10, 1 },
1707 { "-bd", "--border-color", 10, 1 },
1708 { "-bw", "--border-width", 10, 1 },
1709 { "-ib", "--internal-border", 10, 1 },
1710 { "-ms", "--mouse-color", 10, 1 },
1711 { "-cr", "--cursor-color", 10, 1 },
1712 { "-fn", "--font", 10, 1 },
1713 { "-font", 0, 10, 1 },
1714 { "-fs", "--fullscreen", 10, 0 },
1715 { "-fw", "--fullwidth", 10, 0 },
1716 { "-fh", "--fullheight", 10, 0 },
1717 { "-mm", "--maximized", 10, 0 },
1718 { "-g", "--geometry", 10, 1 },
1719 { "-geometry", 0, 10, 1 },
1720 { "-T", "--title", 10, 1 },
1721 { "-title", 0, 10, 1 },
1722 { "-name", "--name", 10, 1 },
1723 { "-xrm", "--xrm", 10, 1 },
1724 { "-parent-id", "--parent-id", 10, 1 },
1725 { "-r", "--reverse-video", 5, 0 },
1727 { "-reverse", 0, 5, 0 },
1728 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1729 { "-vb", "--vertical-scroll-bars", 5, 0 },
1730 { "-color", "--color", 5, 0},
1731 { "-no-splash", "--no-splash", 3, 0 },
1732 { "-no-desktop", "--no-desktop", 3, 0 },
1734 { "-NSAutoLaunch", 0, 5, 1 },
1735 { "-NXAutoLaunch", 0, 5, 1 },
1736 { "-_NSMachLaunch", 0, 85, 1 },
1737 { "-MachLaunch", 0, 85, 1 },
1738 { "-macosx", 0, 85, 0 },
1739 { "-NSHost", 0, 85, 1 },
1741 /* These have the same priority as ordinary file name args,
1742 so they are not reordered with respect to those. */
1743 { "-L", "--directory", 0, 1 },
1744 { "-directory", 0, 0, 1 },
1745 { "-l", "--load", 0, 1 },
1746 { "-load", 0, 0, 1 },
1747 /* This has no longname, because using --scriptload confuses sort_args,
1748 because then the --script long option seems to match twice; ie
1749 you can't have a long option which is a prefix of another long
1750 option. In any case, this is entirely an internal option. */
1751 { "-scriptload", NULL
, 0, 1 },
1752 { "-f", "--funcall", 0, 1 },
1753 { "-funcall", 0, 0, 1 },
1754 { "-eval", "--eval", 0, 1 },
1755 { "-execute", "--execute", 0, 1 },
1756 { "-find-file", "--find-file", 0, 1 },
1757 { "-visit", "--visit", 0, 1 },
1758 { "-file", "--file", 0, 1 },
1759 { "-insert", "--insert", 0, 1 },
1761 { "-NXOpen", 0, 0, 1 },
1762 { "-NXOpenTemp", 0, 0, 1 },
1763 { "-NSOpen", 0, 0, 1 },
1764 { "-NSOpenTemp", 0, 0, 1 },
1765 { "-GSFilePath", 0, 0, 1 },
1767 /* This should be processed after ordinary file name args and the like. */
1768 { "-kill", "--kill", -10, 0 },
1771 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1772 so that the highest priority ones come first.
1773 Do not change the order of elements of equal priority.
1774 If an option takes an argument, keep it and its argument together.
1776 If an option that takes no argument appears more
1777 than once, eliminate all but one copy of it. */
1780 sort_args (int argc
, char **argv
)
1782 char **new = xmalloc (argc
* sizeof *new);
1783 /* For each element of argv,
1784 the corresponding element of options is:
1785 0 for an option that takes no arguments,
1786 1 for an option that takes one argument, etc.
1787 -1 for an ordinary non-option argument. */
1788 int *options
= xnmalloc (argc
, sizeof *options
);
1789 int *priority
= xnmalloc (argc
, sizeof *priority
);
1791 int incoming_used
= 1;
1795 /* Categorize all the options,
1796 and figure out which argv elts are option arguments. */
1797 for (from
= 1; from
< argc
; from
++)
1801 if (argv
[from
][0] == '-')
1805 /* If we have found "--", don't consider
1806 any more arguments as options. */
1807 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1809 /* Leave the "--", and everything following it, at the end. */
1810 for (; from
< argc
; from
++)
1812 priority
[from
] = -100;
1818 /* Look for a match with a known old-fashioned option. */
1819 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1820 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1822 options
[from
] = standard_args
[i
].nargs
;
1823 priority
[from
] = standard_args
[i
].priority
;
1824 if (from
+ standard_args
[i
].nargs
>= argc
)
1825 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1826 from
+= standard_args
[i
].nargs
;
1830 /* Look for a match with a known long option.
1831 MATCH is -1 if no match so far, -2 if two or more matches so far,
1832 >= 0 (the table index of the match) if just one match so far. */
1833 if (argv
[from
][1] == '-')
1835 char const *equals
= strchr (argv
[from
], '=');
1837 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1842 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1843 if (standard_args
[i
].longname
1844 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1853 /* If we found exactly one match, use that. */
1856 options
[from
] = standard_args
[match
].nargs
;
1857 priority
[from
] = standard_args
[match
].priority
;
1858 /* If --OPTION=VALUE syntax is used,
1859 this option uses just one argv element. */
1862 if (from
+ options
[from
] >= argc
)
1863 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1864 from
+= options
[from
];
1866 /* FIXME When match < 0, shouldn't there be some error,
1867 or at least indication to the user that there was a
1874 /* Copy the arguments, in order of decreasing priority, to NEW. */
1876 while (incoming_used
< argc
)
1879 int best_priority
= -9999;
1881 /* Find the highest priority remaining option.
1882 If several have equal priority, take the first of them. */
1883 for (from
= 1; from
< argc
; from
++)
1885 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1887 best_priority
= priority
[from
];
1890 /* Skip option arguments--they are tied to the options. */
1891 if (options
[from
] > 0)
1892 from
+= options
[from
];
1898 /* Copy the highest priority remaining option, with its args, to NEW.
1899 Unless it is a duplicate of the previous one. */
1900 if (! (options
[best
] == 0
1901 && ! strcmp (new[to
- 1], argv
[best
])))
1903 new[to
++] = argv
[best
];
1904 for (i
= 0; i
< options
[best
]; i
++)
1905 new[to
++] = argv
[best
+ i
+ 1];
1908 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1910 /* Clear out this option in ARGV. */
1912 for (i
= 0; i
< options
[best
]; i
++)
1913 argv
[best
+ i
+ 1] = 0;
1916 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1920 memcpy (argv
, new, sizeof (char *) * argc
);
1927 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1928 doc
: /* Exit the Emacs job and kill it.
1929 If ARG is an integer, return ARG as the exit program code.
1930 If ARG is a string, stuff it as keyboard input.
1932 This function is called upon receipt of the signals SIGTERM
1933 or SIGHUP, and upon SIGINT in batch mode.
1935 The value of `kill-emacs-hook', if not void,
1936 is a list of functions (of no args),
1937 all of which are called before Emacs is actually killed. */)
1940 struct gcpro gcpro1
;
1948 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1950 waiting_for_input
= 0;
1951 Frun_hooks (1, &Qkill_emacs_hook
);
1954 #ifdef HAVE_X_WINDOWS
1955 /* Transfer any clipboards we own to the clipboard manager. */
1956 x_clipboard_manager_save_all ();
1959 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1962 ns_release_autorelease_pool (ns_pool
);
1965 /* If we have an auto-save list file,
1966 kill it because we are exiting Emacs deliberately (not crashing).
1967 Do it after shut_down_emacs, which does an auto-save. */
1968 if (STRINGP (Vauto_save_list_file_name
))
1970 Lisp_Object listfile
;
1971 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1972 unlink (SSDATA (listfile
));
1976 exit_code
= (XINT (arg
) < 0
1977 ? XINT (arg
) | INT_MIN
1978 : XINT (arg
) & INT_MAX
);
1980 exit_code
= EXIT_SUCCESS
;
1985 /* Perform an orderly shutdown of Emacs. Autosave any modified
1986 buffers, kill any child processes, clean up the terminal modes (if
1987 we're in the foreground), and other stuff like that. Don't perform
1988 any redisplay; this may be called when Emacs is shutting down in
1989 the background, or after its X connection has died.
1991 If SIG is a signal number, print a message for it.
1993 This is called by fatal signal handlers, X protocol error handlers,
1997 shut_down_emacs (int sig
, Lisp_Object stuff
)
1999 /* Prevent running of hooks from now on. */
2002 /* Don't update display from now on. */
2003 Vinhibit_redisplay
= Qt
;
2005 /* If we are controlling the terminal, reset terminal modes. */
2008 pid_t pgrp
= getpgrp ();
2009 pid_t tpgrp
= tcgetpgrp (0);
2010 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2012 reset_all_sys_modes ();
2013 if (sig
&& sig
!= SIGTERM
)
2015 static char const format
[] = "Fatal error %d: ";
2016 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
2017 int buflen
= sprintf (buf
, format
, sig
);
2018 char const *sig_desc
= safe_strsignal (sig
);
2019 emacs_write (STDERR_FILENO
, buf
, buflen
);
2020 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
2026 reset_all_sys_modes ();
2029 stuff_buffered_input (stuff
);
2031 inhibit_sentinels
= 1;
2032 kill_buffer_processes (Qnil
);
2033 Fdo_auto_save (Qt
, Qnil
);
2035 unlock_all_files ();
2037 /* There is a tendency for a SIGIO signal to arrive within exit,
2038 and cause a SIGHUP because the input descriptor is already closed. */
2042 /* Do this only if terminating normally, we want glyph matrices
2043 etc. in a core dump. */
2044 if (sig
== 0 || sig
== SIGTERM
)
2046 check_glyph_memory ();
2047 check_message_stack ();
2055 ns_term_shutdown (sig
);
2059 xml_cleanup_parser ();
2073 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2074 doc
: /* Dump current state of Emacs into executable file FILENAME.
2075 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2076 This is used in the file `loadup.el' when building Emacs.
2078 You must run Emacs in batch mode in order to dump it. */)
2079 (Lisp_Object filename
, Lisp_Object symfile
)
2083 ptrdiff_t count
= SPECPDL_INDEX ();
2087 if (! noninteractive
)
2088 error ("Dumping Emacs works only in batch mode");
2091 error ("Emacs can be dumped only once");
2095 /* Warn if the gap between BSS end and heap start is larger than this. */
2096 # define MAX_HEAP_BSS_DIFF (1024*1024)
2098 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2100 fprintf (stderr
, "**************************************************\n");
2101 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2102 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2104 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2105 fprintf (stderr
, "fail because of this. See the section about\n");
2106 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2107 fprintf (stderr
, "**************************************************\n");
2109 #endif /* GNU_LINUX */
2111 /* Bind `command-line-processed' to nil before dumping,
2112 so that the dumped Emacs will process its command line
2113 and set up to work with X windows if appropriate. */
2114 symbol
= intern ("command-line-processed");
2115 specbind (symbol
, Qnil
);
2117 CHECK_STRING (filename
);
2118 filename
= Fexpand_file_name (filename
, Qnil
);
2119 filename
= ENCODE_FILE (filename
);
2120 if (!NILP (symfile
))
2122 CHECK_STRING (symfile
);
2123 if (SCHARS (symfile
))
2125 symfile
= Fexpand_file_name (symfile
, Qnil
);
2126 symfile
= ENCODE_FILE (symfile
);
2131 Vpurify_flag
= Qnil
;
2134 set_time_zone_rule (dump_tz
);
2135 #ifndef LOCALTIME_CACHE
2136 /* Force a tz reload, since set_time_zone_rule doesn't. */
2142 /* Tell malloc where start of impure now is. */
2143 /* Also arrange for warnings when nearly out of space. */
2144 #ifndef SYSTEM_MALLOC
2146 /* On Windows, this was done before dumping, and that once suffices.
2147 Meanwhile, my_edata is not valid on Windows. */
2149 extern char my_edata
[];
2150 memory_warnings (my_edata
, malloc_warning
);
2152 #endif /* not WINDOWSNT */
2153 #endif /* not SYSTEM_MALLOC */
2154 #ifdef DOUG_LEA_MALLOC
2155 malloc_state_ptr
= malloc_get_state ();
2158 #ifdef USE_MMAP_FOR_BUFFERS
2161 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2162 #ifdef USE_MMAP_FOR_BUFFERS
2165 #ifdef DOUG_LEA_MALLOC
2166 free (malloc_state_ptr
);
2170 Vlibrary_cache
= Qnil
;
2172 #ifdef HAVE_WINDOW_SYSTEM
2173 reset_image_types ();
2178 return unbind_to (count
, Qnil
);
2181 #endif /* not CANNOT_DUMP */
2184 /* Recover from setlocale (LC_ALL, ""). */
2188 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2189 so that numbers are read and printed properly for Emacs Lisp. */
2190 setlocale (LC_NUMERIC
, "C");
2193 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2196 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2198 if (! EQ (*plocale
, desired_locale
))
2200 *plocale
= desired_locale
;
2201 setlocale (category
, (STRINGP (desired_locale
)
2202 ? SSDATA (desired_locale
)
2207 /* Set system time locale to match Vsystem_time_locale, if possible. */
2209 synchronize_system_time_locale (void)
2211 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2212 Vsystem_time_locale
);
2215 /* Set system messages locale to match Vsystem_messages_locale, if
2218 synchronize_system_messages_locale (void)
2221 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2222 Vsystem_messages_locale
);
2225 #endif /* HAVE_SETLOCALE */
2229 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2231 const char *path
, *p
;
2232 Lisp_Object lpath
, element
, tem
;
2233 /* Default is to use "." for empty path elements.
2234 But if argument EMPTY is true, use nil instead. */
2235 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2238 static const char *emacs_dir_env
= "%emacs_dir%/";
2239 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2240 const char *edir
= egetenv ("emacs_dir");
2241 char emacs_dir
[MAX_UTF8_PATH
];
2243 /* egetenv looks in process-environment, which holds the variables
2244 in their original system-locale encoding. We need emacs_dir to
2247 filename_from_ansi (edir
, emacs_dir
);
2250 /* It's okay to use getenv here, because this function is only used
2251 to initialize variables when Emacs starts up, and isn't called
2254 path
= getenv (evarname
);
2265 /* Ensure values from the environment use the proper directory separator. */
2271 char *path_utf8
, *q
, *d
;
2274 /* Convert each element of PATH to UTF-8. */
2275 p
= path_copy
= alloca (strlen (path
) + 1);
2276 strcpy (path_copy
, path
);
2277 d
= path_utf8
= alloca (4 * strlen (path
) + 1);
2280 q
= _mbschr (p
, SEPCHAR
);
2283 cnv_result
= filename_from_ansi (p
, d
);
2288 /* If conversion of this PATH elements fails, make sure
2289 destination pointer will stay put, thus effectively
2290 ignoring the offending element. */
2291 if (cnv_result
== 0)
2297 else if (cnv_result
!= 0 && d
> path_utf8
)
2298 d
[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2300 path_copy
= path_utf8
;
2302 path_copy
= alloca (strlen (path
) + 1);
2303 strcpy (path_copy
, path
);
2305 dostounix_filename (path_copy
);
2312 p
= strchr (path
, SEPCHAR
);
2314 p
= path
+ strlen (path
);
2315 element
= (p
- path
? make_unibyte_string (path
, p
- path
)
2317 if (! NILP (element
))
2320 /* Relative file names in the default path are interpreted as
2321 being relative to $emacs_dir. */
2322 if (edir
&& defaulted
2323 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2324 element
= Fexpand_file_name (Fsubstring
2326 make_number (emacs_dir_len
),
2328 build_unibyte_string (emacs_dir
));
2331 /* Add /: to the front of the name
2332 if it would otherwise be treated as magic. */
2333 tem
= Ffind_file_name_handler (element
, Qt
);
2335 /* However, if the handler says "I'm safe",
2336 don't bother adding /:. */
2340 prop
= Fget (tem
, intern ("safe-magic"));
2346 element
= concat2 (build_string ("/:"), element
);
2347 } /* !NILP (element) */
2349 lpath
= Fcons (element
, lpath
);
2355 return Fnreverse (lpath
);
2358 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2359 doc
: /* Return non-nil if the current emacs process is a daemon.
2360 If the daemon was given a name argument, return that name. */)
2365 return build_string (daemon_name
);
2372 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2373 doc
: /* Mark the Emacs daemon as being initialized.
2374 This finishes the daemonization process by doing the other half of detaching
2375 from the parent process and its tty file descriptors. */)
2382 error ("This function can only be called if emacs is run as a daemon");
2384 if (daemon_pipe
[1] < 0)
2385 error ("The daemon has already been initialized");
2387 if (NILP (Vafter_init_time
))
2388 error ("This function can only be called after loading the init files");
2390 /* Get rid of stdin, stdout and stderr. */
2391 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2393 err
|= dup2 (nfd
, 0) < 0;
2394 err
|= dup2 (nfd
, 1) < 0;
2395 err
|= dup2 (nfd
, 2) < 0;
2396 err
|= emacs_close (nfd
) != 0;
2398 /* Closing the pipe will notify the parent that it can exit.
2399 FIXME: In case some other process inherited the pipe, closing it here
2400 won't notify the parent because it's still open elsewhere, so we
2401 additionally send a byte, just to make sure the parent really exits.
2402 Instead, we should probably close the pipe in start-process and
2403 call-process to make sure the pipe is never inherited by
2405 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2406 err
|= emacs_close (daemon_pipe
[1]) != 0;
2407 /* Set it to an invalid value so we know we've already run this function. */
2408 daemon_pipe
[1] = -1;
2411 error ("I/O error during daemon initialization");
2416 syms_of_emacs (void)
2418 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2419 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2420 DEFSYM (Qkill_emacs
, "kill-emacs");
2421 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2424 defsubr (&Sdump_emacs
);
2427 defsubr (&Skill_emacs
);
2429 defsubr (&Sinvocation_name
);
2430 defsubr (&Sinvocation_directory
);
2431 defsubr (&Sdaemonp
);
2432 defsubr (&Sdaemon_initialized
);
2434 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2435 doc
: /* Args passed by shell to Emacs, as a list of strings.
2436 Many arguments are deleted from the list as they are processed. */);
2438 DEFVAR_LISP ("system-type", Vsystem_type
,
2439 doc
: /* The value is a symbol indicating the type of operating system you are using.
2441 `gnu' compiled for a GNU Hurd system.
2442 `gnu/linux' compiled for a GNU/Linux system.
2443 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2444 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2445 `ms-dos' compiled as an MS-DOS application.
2446 `windows-nt' compiled as a native W32 application.
2447 `cygwin' compiled using the Cygwin library.
2448 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2449 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2450 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2451 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2453 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2454 doc
: /* Value is string indicating configuration Emacs was built for.
2455 On MS-Windows, the value reflects the OS flavor and version on which
2456 Emacs is running. */);
2457 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2459 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2460 doc
: /* String containing the configuration options Emacs was built with. */);
2461 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2463 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2464 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2466 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2467 doc
: /* Hook run when `kill-emacs' is called.
2468 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2469 in other similar situations), functions placed on this hook should not
2470 expect to be able to interact with the user. To ask for confirmation,
2471 see `kill-emacs-query-functions' instead.
2473 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2474 `noninteractive' was non-nil. */);
2475 Vkill_emacs_hook
= Qnil
;
2477 DEFVAR_LISP ("path-separator", Vpath_separator
,
2478 doc
: /* String containing the character that separates directories in
2479 search paths, such as PATH and other similar environment variables. */);
2482 Vpath_separator
= make_string (&c
, 1);
2485 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2486 doc
: /* The program name that was used to run Emacs.
2487 Any directory names are omitted. */);
2489 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2490 doc
: /* The directory in which the Emacs executable was found, to run it.
2491 The value is nil if that directory's name is not known. */);
2493 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2494 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2495 In an installed Emacs, this is normally nil. It is non-nil if
2496 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2497 within the variable `invocation-directory' or its parent. For example,
2498 this is the case when running an uninstalled Emacs executable from its
2499 build directory. */);
2500 Vinstallation_directory
= Qnil
;
2502 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2503 doc
: /* System locale for messages. */);
2504 Vsystem_messages_locale
= Qnil
;
2506 DEFVAR_LISP ("previous-system-messages-locale",
2507 Vprevious_system_messages_locale
,
2508 doc
: /* Most recently used system locale for messages. */);
2509 Vprevious_system_messages_locale
= Qnil
;
2511 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2512 doc
: /* System locale for time. */);
2513 Vsystem_time_locale
= Qnil
;
2515 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2516 doc
: /* Most recently used system locale for time. */);
2517 Vprevious_system_time_locale
= Qnil
;
2519 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2520 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2521 Vbefore_init_time
= Qnil
;
2523 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2524 doc
: /* Value of `current-time' after loading the init files.
2525 This is nil during initialization. */);
2526 Vafter_init_time
= Qnil
;
2528 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2529 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2530 inhibit_x_resources
= 0;
2532 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2533 doc
: /* Short copyright string for this version of Emacs. */);
2534 Vemacs_copyright
= build_string (emacs_copyright
);
2536 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2537 doc
: /* Version numbers of this version of Emacs. */);
2538 Vemacs_version
= build_string (emacs_version
);
2540 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2541 doc
: /* Alist of dynamic libraries vs external files implementing them.
2542 Each element is a list (LIBRARY FILE...), where the car is a symbol
2543 representing a supported external library, and the rest are strings giving
2544 alternate filenames for that library.
2546 Emacs tries to load the library from the files in the order they appear on
2547 the list; if none is loaded, the running session of Emacs won't have access
2550 Note that image types `pbm' and `xbm' do not need entries in this variable
2551 because they do not depend on external libraries and are always available.
2553 Also note that this is not a generic facility for accessing external
2554 libraries; only those already known by Emacs will be loaded. */);
2555 Vdynamic_library_alist
= Qnil
;
2556 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2559 Vlibrary_cache
= Qnil
;
2560 staticpro (&Vlibrary_cache
);