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"
55 #include <binary-io.h>
58 #ifdef HAVE_WINDOW_SYSTEM
60 #endif /* HAVE_WINDOW_SYSTEM */
62 #ifdef NS_IMPL_GNUSTEP
63 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
64 #include <GNUstepBase/GSConfig.h>
68 #include "intervals.h"
69 #include "character.h"
75 #include "blockinput.h"
76 #include "syssignal.h"
79 #include "termhooks.h"
84 #include "composite.h"
85 #include "dispextern.h"
87 #include "sysselect.h"
94 #if (defined PROFILING \
95 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
96 # include <sys/gmon.h>
97 extern void moncontrol (int mode
);
100 #ifdef HAVE_SETLOCALE
104 #ifdef HAVE_SETRLIMIT
105 #include <sys/time.h>
106 #include <sys/resource.h>
109 #ifdef HAVE_PERSONALITY_LINUX32
110 #include <sys/personality.h>
113 static const char emacs_version
[] = PACKAGE_VERSION
;
114 static const char emacs_copyright
[] = COPYRIGHT
;
115 static const char emacs_bugreport
[] = PACKAGE_BUGREPORT
;
117 /* Empty lisp strings. To avoid having to build any others. */
118 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
121 /* Cache for externally loaded libraries. */
122 Lisp_Object Vlibrary_cache
;
125 /* Set after Emacs has started up the first time.
126 Prevents reinitialization of the Lisp world and keymaps
127 on subsequent starts. */
130 /* Set to true if this instance of Emacs might dump. */
134 extern void unexec_init_emacs_zone (void);
137 #ifdef DOUG_LEA_MALLOC
138 /* Preserves a pointer to the memory allocated that copies that
139 static data inside glibc's malloc. */
140 static void *malloc_state_ptr
;
141 /* From glibc, a routine that returns a copy of the malloc internal state. */
142 extern void *malloc_get_state (void);
143 /* From glibc, a routine that overwrites the malloc internal state. */
144 extern int malloc_set_state (void *);
145 /* True if the MALLOC_CHECK_ environment variable was set while
146 dumping. Used to work around a bug in glibc's malloc. */
147 static bool malloc_using_checking
;
148 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
149 extern void malloc_enable_thread (void);
152 Lisp_Object Qfile_name_handler_alist
;
154 Lisp_Object Qrisky_local_variable
;
156 Lisp_Object Qkill_emacs
;
157 static Lisp_Object Qkill_emacs_hook
;
159 /* If true, Emacs should not attempt to use a window-specific code,
160 but instead should use the virtual terminal under which it was started. */
161 bool inhibit_window_system
;
163 /* If true, a filter or a sentinel is running. Tested to save the match
164 data on the first attempt to change it inside asynchronous code. */
165 bool running_asynch_code
;
167 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
168 /* If true, -d was specified, meaning we're using some window system. */
172 /* An address near the bottom of the stack.
173 Tells GC how to save a copy of the stack. */
176 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
177 /* The address where the heap starts (from the first sbrk (0) call). */
178 static void *my_heap_start
;
182 /* The gap between BSS end and heap start as far as we can tell. */
183 static uprintmax_t heap_bss_diff
;
186 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
189 On Cocoa, CoreFoundation lib fails in forked process:
190 http://developer.apple.com/ReleaseNotes/
191 CoreFoundation/CoreFoundation.html)
193 On Windows, a Cygwin fork child cannot access the USER subsystem.
195 We mark being in the exec'd process by a daemon name argument of
196 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
197 NAME is the original daemon name, if any. */
198 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
199 # define DAEMON_MUST_EXEC
202 /* True means running Emacs without interactive terminal. */
205 /* True means remove site-lisp directories from load-path. */
208 /* Name for the server started by the daemon.*/
209 static char *daemon_name
;
211 /* Pipe used to send exit notification to the daemon parent at
215 /* Save argv and argc. */
219 static void sort_args (int argc
, char **argv
);
220 static void syms_of_emacs (void);
222 /* C99 needs each string to be at most 4095 characters, and the usage
223 strings below are split to not overflow this limit. */
224 static char const *const usage_message
[] =
227 Run Emacs, the extensible, customizable, self-documenting real-time\n\
228 display editor. The recommended way to start Emacs for normal editing\n\
229 is with no options at all.\n\
231 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
232 read the main documentation for these command-line arguments.\n\
234 Initialization options:\n\
238 --batch do not do interactive display; implies -q\n\
239 --chdir DIR change to directory DIR\n\
240 --daemon start a server in the background\n\
241 --debug-init enable Emacs Lisp debugger for init file\n\
242 --display, -d DISPLAY use X server DISPLAY\n\
245 --no-desktop do not load a saved desktop\n\
246 --no-init-file, -q load neither ~/.emacs nor default.el\n\
247 --no-shared-memory, -nl do not use shared memory\n\
248 --no-site-file do not load site-start.el\n\
249 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
250 --no-splash do not display a splash screen on startup\n\
251 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
254 --quick, -Q equivalent to:\n\
255 -q --no-site-file --no-site-lisp --no-splash\n\
256 --script FILE run FILE as an Emacs Lisp script\n\
257 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
258 --user, -u USER load ~USER/.emacs instead of your own\n\
264 FILE visit FILE using find-file\n\
265 +LINE go to line LINE in next FILE\n\
266 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
267 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
268 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
269 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
272 --file FILE visit FILE using find-file\n\
273 --find-file FILE visit FILE using find-file\n\
274 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
275 --insert FILE insert contents of FILE into current buffer\n\
276 --kill exit without asking for confirmation\n\
277 --load, -l FILE load Emacs Lisp FILE using the load function\n\
278 --visit FILE visit FILE using find-file\n\
284 --background-color, -bg COLOR window background color\n\
285 --basic-display, -D disable many display features;\n\
286 used for debugging Emacs\n\
287 --border-color, -bd COLOR main border color\n\
288 --border-width, -bw WIDTH width of main border\n\
291 --color, --color=MODE override color mode for character terminals;\n\
292 MODE defaults to `auto', and\n\
293 can also be `never', `always',\n\
294 or a mode name like `ansi8'\n\
295 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
296 --font, -fn FONT default font; must be fixed-width\n\
297 --foreground-color, -fg COLOR window foreground color\n\
300 --fullheight, -fh make the first frame high as the screen\n\
301 --fullscreen, -fs make the first frame fullscreen\n\
302 --fullwidth, -fw make the first frame wide as the screen\n\
303 --maximized, -mm make the first frame maximized\n\
304 --geometry, -g GEOMETRY window geometry\n\
307 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
308 --iconic start Emacs in iconified state\n\
309 --internal-border, -ib WIDTH width between text and main border\n\
310 --line-spacing, -lsp PIXELS additional space to put between lines\n\
311 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
312 --name NAME title for initial Emacs frame\n\
315 --no-blinking-cursor, -nbc disable blinking cursor\n\
316 --reverse-video, -r, -rv switch foreground and background\n\
317 --title, -T TITLE title for initial Emacs frame\n\
318 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
319 --xrm XRESOURCES set additional X resources\n\
320 --parent-id XID set parent window\n\
321 --help display this help and exit\n\
322 --version output version information and exit\n\
326 You can generally also specify long option names with a single -; for\n\
327 example, -batch as well as --batch. You can use any unambiguous\n\
328 abbreviation for a --option.\n\
330 Various environment variables and window system resources also affect\n\
331 the operation of Emacs. See the main documentation.\n\
333 Report bugs to " PACKAGE_BUGREPORT
". First, please see the Bugs\n\
334 section of the Emacs manual or the file BUGS.\n"
338 /* True if handling a fatal error already. */
339 bool fatal_error_in_progress
;
342 /* NS autrelease pool, for memory management. */
343 static void *ns_pool
;
348 setlocale (int cat
, char const *locale
)
355 /* Report a fatal error due to signal SIG, output a backtrace of at
356 most BACKTRACE_LIMIT lines, and exit. */
358 terminate_due_to_signal (int sig
, int backtrace_limit
)
360 signal (sig
, SIG_DFL
);
361 totally_unblock_input ();
363 /* If fatal error occurs in code below, avoid infinite recursion. */
364 if (! fatal_error_in_progress
)
366 fatal_error_in_progress
= 1;
368 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
369 Fkill_emacs (make_number (sig
));
371 shut_down_emacs (sig
, Qnil
);
372 emacs_backtrace (backtrace_limit
);
375 /* Signal the same code; this time it will really be fatal.
376 Since we're in a signal handler, the signal is blocked, so we
377 have to unblock it if we want to really receive it. */
381 sigemptyset (&unblocked
);
382 sigaddset (&unblocked
, sig
);
383 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
389 /* This shouldn't be executed, but it prevents a warning. */
393 /* Code for dealing with Lisp access to the Unix command line. */
396 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
399 Lisp_Object name
, dir
, handler
;
400 ptrdiff_t count
= SPECPDL_INDEX ();
401 Lisp_Object raw_name
;
407 /* Must use argv[0] converted to UTF-8, as it begets many standard
408 file and directory names. */
410 char argv0
[MAX_UTF8_PATH
];
412 if (filename_from_ansi (argv
[0], argv0
) == 0)
413 raw_name
= build_unibyte_string (argv0
);
415 raw_name
= build_unibyte_string (argv
[0]);
418 raw_name
= build_unibyte_string (argv
[0]);
421 /* Add /: to the front of the name
422 if it would otherwise be treated as magic. */
423 handler
= Ffind_file_name_handler (raw_name
, Qt
);
424 if (! NILP (handler
))
425 raw_name
= concat2 (build_string ("/:"), raw_name
);
427 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
428 Vinvocation_directory
= Ffile_name_directory (raw_name
);
430 /* If we got no directory in argv[0], search PATH to find where
431 Emacs actually came from. */
432 if (NILP (Vinvocation_directory
))
435 int yes
= openp (Vexec_path
, Vinvocation_name
,
436 Vexec_suffixes
, &found
, make_number (X_OK
), false);
439 /* Add /: to the front of the name
440 if it would otherwise be treated as magic. */
441 handler
= Ffind_file_name_handler (found
, Qt
);
442 if (! NILP (handler
))
443 found
= concat2 (build_string ("/:"), found
);
444 Vinvocation_directory
= Ffile_name_directory (found
);
448 if (!NILP (Vinvocation_directory
)
449 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
450 /* Emacs was started with relative path, like ./emacs.
454 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
456 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
459 Vinstallation_directory
= Qnil
;
461 if (!NILP (Vinvocation_directory
))
463 dir
= Vinvocation_directory
;
465 /* If we are running from the build directory, set DIR to the
466 src subdirectory of the Emacs tree, like on Posix
468 if (SBYTES (dir
) > sizeof ("/i386/") - 1
469 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
471 dir
= Fexpand_file_name (build_string ("../.."), dir
);
472 #else /* !WINDOWSNT */
474 name
= Fexpand_file_name (Vinvocation_name
, dir
);
477 Lisp_Object tem
, lib_src_exists
;
478 Lisp_Object etc_exists
, info_exists
;
480 /* See if dir contains subdirs for use by Emacs.
481 Check for the ones that would exist in a build directory,
482 not including lisp and info. */
483 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
484 lib_src_exists
= Ffile_exists_p (tem
);
487 /* MSDOS installations frequently remove lib-src, but we still
488 must set installation-directory, or else info won't find
489 its files (it uses the value of installation-directory). */
490 tem
= Fexpand_file_name (build_string ("info"), dir
);
491 info_exists
= Ffile_exists_p (tem
);
496 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
498 tem
= Fexpand_file_name (build_string ("etc"), dir
);
499 etc_exists
= Ffile_exists_p (tem
);
500 if (!NILP (etc_exists
))
502 Vinstallation_directory
503 = Ffile_name_as_directory (dir
);
508 /* See if dir's parent contains those subdirs. */
509 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
510 lib_src_exists
= Ffile_exists_p (tem
);
514 /* See the MSDOS commentary above. */
515 tem
= Fexpand_file_name (build_string ("../info"), dir
);
516 info_exists
= Ffile_exists_p (tem
);
521 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
523 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
524 etc_exists
= Ffile_exists_p (tem
);
525 if (!NILP (etc_exists
))
527 tem
= Fexpand_file_name (build_string (".."), dir
);
528 Vinstallation_directory
529 = Ffile_name_as_directory (tem
);
534 /* If the Emacs executable is actually a link,
535 next try the dir that the link points into. */
536 tem
= Ffile_symlink_p (name
);
539 name
= Fexpand_file_name (tem
, dir
);
540 dir
= Ffile_name_directory (name
);
547 Vcommand_line_args
= Qnil
;
549 for (i
= argc
- 1; i
>= 0; i
--)
551 if (i
== 0 || i
> skip_args
)
552 /* For the moment, we keep arguments as is in unibyte strings.
553 They are decoded in the function command-line after we know
554 locale-coding-system. */
556 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
559 unbind_to (count
, Qnil
);
562 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
563 doc
: /* Return the program name that was used to run Emacs.
564 Any directory names are omitted. */)
567 return Fcopy_sequence (Vinvocation_name
);
570 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
572 doc
: /* Return the directory name in which the Emacs executable was located. */)
575 return Fcopy_sequence (Vinvocation_directory
);
580 /* A valid but unlikely value for the TZ environment value.
581 It is OK (though a bit slower) if the user actually chooses this value. */
582 static char const dump_tz
[] = "UtC0";
585 /* Test whether the next argument in ARGV matches SSTR or a prefix of
586 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
587 (the argument is supposed to have a value) store in *VALPTR either
588 the next argument or the portion of this one after the equal sign.
589 ARGV is read starting at position *SKIPPTR; this index is advanced
590 by the number of arguments used.
592 Too bad we can't just use getopt for all of this, but we don't have
593 enough information to do it right. */
596 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
597 int minlen
, char **valptr
, int *skipptr
)
603 /* Don't access argv[argc]; give up in advance. */
604 if (argc
<= *skipptr
+ 1)
607 arg
= argv
[*skipptr
+1];
610 if (strcmp (arg
, sstr
) == 0)
614 *valptr
= argv
[*skipptr
+2];
621 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
622 ? p
- arg
: strlen (arg
));
623 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
625 else if (valptr
== NULL
)
636 else if (argv
[*skipptr
+2] != NULL
)
638 *valptr
= argv
[*skipptr
+2];
648 #ifdef DOUG_LEA_MALLOC
650 /* malloc can be invoked even before main (e.g. by the dynamic
651 linker), so the dumped malloc state must be restored as early as
652 possible using this special hook. */
655 malloc_initialize_hook (void)
659 if (!malloc_using_checking
)
660 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
661 ignored if the heap to be restored was constructed without
662 malloc checking. Can't use unsetenv, since that calls malloc. */
666 for (p
= environ
; p
&& *p
; p
++)
667 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
676 malloc_set_state (malloc_state_ptr
);
677 #ifndef XMALLOC_OVERRUN_CHECK
678 free (malloc_state_ptr
);
683 if (my_heap_start
== 0)
684 my_heap_start
= sbrk (0);
685 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
689 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
691 #endif /* DOUG_LEA_MALLOC */
693 /* Close standard output and standard error, reporting any write
694 errors as best we can. This is intended for use with atexit. */
696 close_output_streams (void)
698 if (close_stream (stdout
) != 0)
700 emacs_perror ("Write error to standard output");
701 _exit (EXIT_FAILURE
);
704 if (close_stream (stderr
) != 0)
705 _exit (EXIT_FAILURE
);
710 main (int argc
, char **argv
)
715 char stack_bottom_variable
;
716 bool do_initial_setlocale
;
719 #ifdef HAVE_SETRLIMIT
725 #ifdef DAEMON_MUST_EXEC
730 /* If we use --chdir, this records the original directory. */
731 char *original_pwd
= 0;
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 */
920 SET_BINARY (fileno (stdin
));
922 SET_BINARY (fileno (stdout
));
925 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
926 The build procedure uses this while dumping, to ensure that the
927 dumped Emacs does not have its system locale tables initialized,
928 as that might cause screwups when the dumped Emacs starts up. */
930 char *lc_all
= getenv ("LC_ALL");
931 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
934 /* Set locale now, so that initial error messages are localized properly.
935 fixup_locale must wait until later, since it builds strings. */
936 if (do_initial_setlocale
)
937 setlocale (LC_ALL
, "");
939 inhibit_window_system
= 0;
941 /* Handle the -t switch, which specifies filename to use as terminal. */
945 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
950 result
= emacs_open (term
, O_RDWR
, 0);
951 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
953 char *errstring
= strerror (errno
);
954 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
959 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
962 fprintf (stderr
, "Using %s\n", term
);
963 #ifdef HAVE_WINDOW_SYSTEM
964 inhibit_window_system
= 1; /* -t => -nw */
971 /* Command line option --no-windows is deprecated and thus not mentioned
972 in the manual and usage information. */
973 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
974 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
975 inhibit_window_system
= 1;
977 /* Handle the -batch switch, which means don't do interactive display. */
979 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
982 Vundo_outer_limit
= Qnil
;
984 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
986 noninteractive
= 1; /* Set batch mode. */
987 /* Convert --script to -scriptload, un-skip it, and sort again
988 so that it will be handled in proper sequence. */
989 /* FIXME broken for --script=FILE - is that supposed to work? */
990 argv
[skip_args
- 1] = (char *) "-scriptload";
992 sort_args (argc
, argv
);
995 /* Handle the --help option, which gives a usage message. */
996 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
999 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
1000 for (i
= 0; i
< ARRAYELTS (usage_message
); i
++)
1001 fputs (usage_message
[i
], stdout
);
1005 /* Make sure IS_DAEMON starts up as false. */
1008 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
1009 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
1014 /* Start as a daemon: fork a new child process which will run the
1015 rest of the initialization code, then exit.
1017 Detaching a daemon requires the following steps:
1021 - close the tty file-descriptors
1023 We only want to do the last 2 steps once the daemon is ready to
1024 serve requests, i.e. after loading .emacs (initialization).
1025 OTOH initialization may start subprocesses (e.g. ispell) and these
1026 should be run from the proper process (the one that will end up
1027 running as daemon) and with the proper "session id" in order for
1028 them to keep working after detaching, so fork and setsid need to be
1029 performed before initialization.
1031 We want to avoid exiting before the server socket is ready, so
1032 use a pipe for synchronization. The parent waits for the child
1033 to close its end of the pipe (using `daemon-initialized')
1035 if (emacs_pipe (daemon_pipe
) != 0)
1037 fprintf (stderr
, "Cannot pipe!\n");
1041 #ifndef DAEMON_MUST_EXEC
1043 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1044 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1045 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1046 #endif /* USE_GTK */
1048 #else /* DAEMON_MUST_EXEC */
1049 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1050 f
= fork (); /* in orig */
1052 f
= 0; /* in exec'd */
1053 #endif /* !DAEMON_MUST_EXEC */
1059 /* Close unused writing end of the pipe. */
1060 emacs_close (daemon_pipe
[1]);
1062 /* Just wait for the child to close its end of the pipe. */
1065 retval
= read (daemon_pipe
[0], &buf
, 1);
1067 while (retval
== -1 && errno
== EINTR
);
1071 fprintf (stderr
, "Error reading status from child\n");
1074 else if (retval
== 0)
1076 fprintf (stderr
, "Error: server did not start correctly\n");
1080 emacs_close (daemon_pipe
[0]);
1085 emacs_perror ("fork");
1086 exit (EXIT_CANCELED
);
1089 #ifdef DAEMON_MUST_EXEC
1091 /* In orig process, forked as child, OR in exec'd. */
1092 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1093 { /* In orig, child: now exec w/special daemon name. */
1096 snprintf (fdStr
, sizeof fdStr
,
1097 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1098 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1100 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1102 fprintf (stderr
, "daemon: child name too long\n");
1103 exit (EXIT_CANNOT_INVOKE
);
1106 argv
[skip_args
] = fdStr
;
1108 fcntl (daemon_pipe
[0], F_SETFD
, 0);
1109 fcntl (daemon_pipe
[1], F_SETFD
, 0);
1110 execvp (argv
[0], argv
);
1111 emacs_perror (argv
[0]);
1112 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1115 /* In exec'd: parse special dname into pipe and name info. */
1116 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1117 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1119 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1120 exit (EXIT_CANNOT_INVOKE
);
1122 dname_arg2
[0] = '\0';
1123 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1125 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1126 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1128 #endif /* DAEMON_MUST_EXEC */
1131 daemon_name
= xstrdup (dname_arg
);
1132 /* Close unused reading end of the pipe. */
1133 emacs_close (daemon_pipe
[0]);
1137 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1142 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1143 # ifndef CANNOT_DUMP
1144 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1145 that causes an infinite recursive loop with FreeBSD. But do make
1146 it thread-safe when creating emacs, otherwise bootstrap-emacs
1147 fails on Cygwin. See Bug#14569. */
1148 if (!noninteractive
|| initialized
)
1150 malloc_enable_thread ();
1153 init_signals (dumping
);
1155 noninteractive1
= noninteractive
;
1157 /* Perform basic initializations (not merely interning symbols). */
1164 init_charset_once ();
1165 init_coding_once ();
1166 init_syntax_once (); /* Create standard syntax table. */
1167 init_category_once (); /* Create standard category table. */
1168 init_casetab_once (); /* Must be done before init_buffer_once. */
1169 init_buffer_once (); /* Create buffer table and some buffers. */
1170 init_minibuf_once (); /* Create list of minibuffers. */
1171 /* Must precede init_window_once. */
1173 /* Call syms_of_xfaces before init_window_once because that
1174 function creates Vterminal_frame. Termcap frames now use
1175 faces, and the face implementation uses some symbols as
1178 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1179 be better to arrange things not to have this dependency. */
1181 /* Call syms_of_keyboard before init_window_once because
1182 keyboard sets up symbols that include some face names that
1183 the X support will want to use. This can happen when
1184 CANNOT_DUMP is defined. */
1185 syms_of_keyboard ();
1187 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1189 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1191 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1193 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1195 /* Before syms_of_coding because it initializes Qcharsetp. */
1197 /* Before init_window_once, because it sets up the
1198 Vcoding_system_hash_table. */
1199 syms_of_coding (); /* This should be after syms_of_fileio. */
1201 init_window_once (); /* Init the window system. */
1202 #ifdef HAVE_WINDOW_SYSTEM
1203 init_fringe_once (); /* Swap bitmaps if necessary. */
1204 #endif /* HAVE_WINDOW_SYSTEM */
1209 if (do_initial_setlocale
)
1212 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1213 Vsystem_time_locale
= Vprevious_system_time_locale
;
1218 running_asynch_code
= 0;
1222 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1225 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1228 ns_pool
= ns_alloc_autorelease_pool ();
1229 #ifdef NS_IMPL_GNUSTEP
1230 /* GNUstep stupidly resets our locale settings after we made them. */
1234 if (!noninteractive
)
1236 #ifdef NS_IMPL_COCOA
1237 /* Started from GUI? */
1238 /* FIXME: Do the right thing if getenv returns NULL, or if
1240 if (! inhibit_window_system
&& ! isatty (0))
1241 chdir (getenv ("HOME"));
1242 if (skip_args
< argc
)
1244 if (!strncmp (argv
[skip_args
], "-psn", 4))
1247 chdir (getenv ("HOME"));
1249 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1252 chdir (getenv ("HOME"));
1257 #endif /* HAVE_NS */
1259 #ifdef HAVE_X_WINDOWS
1260 /* Stupid kludge to catch command-line display spec. We can't
1261 handle this argument entirely in window system dependent code
1262 because we don't even know which window system dependent code
1263 to run until we've recognized this argument. */
1265 char *displayname
= 0;
1266 int count_before
= skip_args
;
1268 /* Skip any number of -d options, but only use the last one. */
1271 int count_before_this
= skip_args
;
1273 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1275 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1280 count_before
= count_before_this
;
1283 /* If we have the form --display=NAME,
1284 convert it into -d name.
1285 This requires inserting a new element into argv. */
1286 if (displayname
&& count_before
< skip_args
)
1288 if (skip_args
== count_before
+ 1)
1290 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1291 (argc
- (count_before
+ 2)) * sizeof *argv
);
1292 argv
[count_before
+ 2] = displayname
;
1295 argv
[count_before
+ 1] = (char *) "-d";
1300 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1301 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1305 /* Don't actually discard this arg. */
1306 skip_args
= count_before
;
1308 #else /* !HAVE_X_WINDOWS */
1311 int count_before
= skip_args
;
1313 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1314 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1317 skip_args
= count_before
;
1321 /* argmatch must not be used after here,
1322 except when building temacs
1323 because the -d argument has not been skipped in skip_args. */
1326 /* Call early 'cause init_environment needs it. */
1328 /* Set defaults for several environment variables. */
1330 init_environment (argc
, argv
, skip_args
);
1335 #ifdef HAVE_GFILENOTIFY
1336 globals_of_gfilenotify ();
1341 #ifdef HAVE_W32NOTIFY
1342 globals_of_w32notify ();
1344 /* Initialize environment from registry settings. */
1345 init_environment (argv
);
1346 init_ntproc (dumping
); /* must precede init_editfns. */
1349 /* Initialize and GC-protect Vinitial_environment and
1350 Vprocess_environment before set_initial_environment fills them
1353 syms_of_callproc ();
1354 /* egetenv is a pretty low-level facility, which may get called in
1355 many circumstances; it seems flimsy to put off initializing it
1356 until calling init_callproc. Do not do it when dumping. */
1358 set_initial_environment ();
1360 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1361 if this is not done. Do it after set_global_environment so that we
1362 don't pollute Vglobal_environment. */
1363 /* Setting LANG here will defeat the startup locale processing... */
1368 /* Init buffer storage and default directory of main buffer. */
1369 init_buffer (initialized
);
1371 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1373 /* Must precede init_lread. */
1374 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1378 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1379 Lisp_Object old_log_max
;
1380 old_log_max
= Vmessage_log_max
;
1381 XSETFASTINT (Vmessage_log_max
, 0);
1382 message_dolog ("", 0, 1, 0);
1383 Vmessage_log_max
= old_log_max
;
1386 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1390 /* Check to see if Emacs has been installed correctly. */
1391 check_windows_init_file ();
1394 /* Intern the names of all standard functions and variables;
1395 define standard keys. */
1399 /* The basic levels of Lisp must come first. Note that
1400 syms_of_data and some others have already been called. */
1405 syms_of_floatfns ();
1408 syms_of_bytecode ();
1410 syms_of_casefiddle ();
1412 syms_of_category ();
1414 syms_of_character ();
1421 syms_of_filelock ();
1424 /* syms_of_keymap (); */
1432 syms_of_terminal ();
1438 syms_of_textprop ();
1439 syms_of_composite ();
1442 #endif /* WINDOWSNT */
1449 #ifdef HAVE_WINDOW_SYSTEM
1452 #endif /* HAVE_WINDOW_SYSTEM */
1453 #ifdef HAVE_X_WINDOWS
1458 syms_of_xsettings ();
1465 #endif /* HAVE_X_WINDOWS */
1472 syms_of_decompress ();
1482 #endif /* HAVE_NTGUI */
1484 #if defined WINDOWSNT || defined HAVE_NTGUI
1485 syms_of_w32select ();
1492 syms_of_win16select ();
1499 syms_of_nsselect ();
1501 #endif /* HAVE_NS */
1507 #ifdef HAVE_GFILENOTIFY
1508 syms_of_gfilenotify ();
1509 #endif /* HAVE_GFILENOTIFY */
1513 #endif /* HAVE_INOTIFY */
1516 syms_of_dbusbind ();
1517 #endif /* HAVE_DBUS */
1521 #ifdef HAVE_W32NOTIFY
1522 syms_of_w32notify ();
1523 #endif /* HAVE_W32NOTIFY */
1524 #endif /* WINDOWSNT */
1526 syms_of_profiler ();
1528 keys_of_casefiddle ();
1531 keys_of_keyboard ();
1537 /* Initialization that must be done even if the global variable
1538 initialized is non zero. */
1540 globals_of_w32font ();
1541 globals_of_w32fns ();
1542 globals_of_w32menu ();
1543 #endif /* HAVE_NTGUI */
1545 #if defined WINDOWSNT || defined HAVE_NTGUI
1546 globals_of_w32select ();
1552 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1553 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1554 init_keyboard (); /* This too must precede init_sys_modes. */
1555 if (!noninteractive
)
1556 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1559 init_crit (); /* w32notify.c needs this in batch mode. */
1560 #endif /* HAVE_W32NOTIFY */
1562 #ifdef HAVE_WINDOW_SYSTEM
1564 #endif /* HAVE_WINDOW_SYSTEM */
1572 /* Handle -l loadup, args passed by Makefile. */
1573 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1576 char file_utf8
[MAX_UTF8_PATH
];
1578 if (filename_from_ansi (file
, file_utf8
) == 0)
1581 Vtop_level
= list2 (intern_c_string ("load"),
1582 build_unibyte_string (file
));
1584 /* Unless next switch is -nl, load "loadup.el" first thing. */
1586 Vtop_level
= list2 (intern_c_string ("load"),
1587 build_string ("loadup.el"));
1594 /* If the execution TZ happens to be the same as the dump TZ,
1595 change it to some other value and then change it back,
1596 to force the underlying implementation to reload the TZ info.
1597 This is needed on implementations that load TZ info from files,
1598 since the TZ file contents may differ between dump and execution. */
1599 char *tz
= getenv ("TZ");
1600 if (tz
&& !strcmp (tz
, dump_tz
))
1610 /* Set up for profiling. This is known to work on FreeBSD,
1611 GNU/Linux and MinGW. It might work on some other systems too.
1612 Give it a try and tell us if it works on your system. To compile
1613 for profiling, use the configure option --enable-profiling. */
1614 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1619 extern unsigned char etext
asm ("etext");
1625 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1634 #ifdef LOCALTIME_CACHE
1635 /* Some versions of localtime have a bug. They cache the value of the time
1636 zone rather than looking it up every time. Since localtime() is
1637 called to bolt the undumping time into the undumped emacs, this
1638 results in localtime ignoring the TZ environment variable.
1639 This flushes the new TZ value into localtime. */
1641 #endif /* defined (LOCALTIME_CACHE) */
1643 /* Enter editor command loop. This never returns. */
1649 /* Sort the args so we can find the most important ones
1650 at the beginning of argv. */
1652 /* First, here's a table of all the standard options. */
1654 struct standard_args
1657 const char *longname
;
1662 static const struct standard_args standard_args
[] =
1664 { "-version", "--version", 150, 0 },
1665 { "-chdir", "--chdir", 130, 1 },
1666 { "-t", "--terminal", 120, 1 },
1667 { "-nw", "--no-window-system", 110, 0 },
1668 { "-nw", "--no-windows", 110, 0 },
1669 { "-batch", "--batch", 100, 0 },
1670 { "-script", "--script", 100, 1 },
1671 { "-daemon", "--daemon", 99, 0 },
1672 { "-help", "--help", 90, 0 },
1673 { "-nl", "--no-loadup", 70, 0 },
1674 { "-nsl", "--no-site-lisp", 65, 0 },
1675 /* -d must come last before the options handled in startup.el. */
1676 { "-d", "--display", 60, 1 },
1677 { "-display", 0, 60, 1 },
1678 /* Now for the options handled in `command-line' (startup.el). */
1679 /* (Note that to imply -nsl, -Q is partially handled here.) */
1680 { "-Q", "--quick", 55, 0 },
1681 { "-quick", 0, 55, 0 },
1682 { "-q", "--no-init-file", 50, 0 },
1683 { "-no-init-file", 0, 50, 0 },
1684 { "-no-site-file", "--no-site-file", 40, 0 },
1685 { "-u", "--user", 30, 1 },
1686 { "-user", 0, 30, 1 },
1687 { "-debug-init", "--debug-init", 20, 0 },
1688 { "-iconic", "--iconic", 15, 0 },
1689 { "-D", "--basic-display", 12, 0},
1690 { "-basic-display", 0, 12, 0},
1691 { "-nbc", "--no-blinking-cursor", 12, 0 },
1692 /* Now for the options handled in `command-line-1' (startup.el). */
1693 { "-nbi", "--no-bitmap-icon", 10, 0 },
1694 { "-bg", "--background-color", 10, 1 },
1695 { "-background", 0, 10, 1 },
1696 { "-fg", "--foreground-color", 10, 1 },
1697 { "-foreground", 0, 10, 1 },
1698 { "-bd", "--border-color", 10, 1 },
1699 { "-bw", "--border-width", 10, 1 },
1700 { "-ib", "--internal-border", 10, 1 },
1701 { "-ms", "--mouse-color", 10, 1 },
1702 { "-cr", "--cursor-color", 10, 1 },
1703 { "-fn", "--font", 10, 1 },
1704 { "-font", 0, 10, 1 },
1705 { "-fs", "--fullscreen", 10, 0 },
1706 { "-fw", "--fullwidth", 10, 0 },
1707 { "-fh", "--fullheight", 10, 0 },
1708 { "-mm", "--maximized", 10, 0 },
1709 { "-g", "--geometry", 10, 1 },
1710 { "-geometry", 0, 10, 1 },
1711 { "-T", "--title", 10, 1 },
1712 { "-title", 0, 10, 1 },
1713 { "-name", "--name", 10, 1 },
1714 { "-xrm", "--xrm", 10, 1 },
1715 { "-parent-id", "--parent-id", 10, 1 },
1716 { "-r", "--reverse-video", 5, 0 },
1718 { "-reverse", 0, 5, 0 },
1719 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1720 { "-vb", "--vertical-scroll-bars", 5, 0 },
1721 { "-color", "--color", 5, 0},
1722 { "-no-splash", "--no-splash", 3, 0 },
1723 { "-no-desktop", "--no-desktop", 3, 0 },
1725 { "-NSAutoLaunch", 0, 5, 1 },
1726 { "-NXAutoLaunch", 0, 5, 1 },
1727 { "-_NSMachLaunch", 0, 85, 1 },
1728 { "-MachLaunch", 0, 85, 1 },
1729 { "-macosx", 0, 85, 0 },
1730 { "-NSHost", 0, 85, 1 },
1732 /* These have the same priority as ordinary file name args,
1733 so they are not reordered with respect to those. */
1734 { "-L", "--directory", 0, 1 },
1735 { "-directory", 0, 0, 1 },
1736 { "-l", "--load", 0, 1 },
1737 { "-load", 0, 0, 1 },
1738 /* This has no longname, because using --scriptload confuses sort_args,
1739 because then the --script long option seems to match twice; ie
1740 you can't have a long option which is a prefix of another long
1741 option. In any case, this is entirely an internal option. */
1742 { "-scriptload", NULL
, 0, 1 },
1743 { "-f", "--funcall", 0, 1 },
1744 { "-funcall", 0, 0, 1 },
1745 { "-eval", "--eval", 0, 1 },
1746 { "-execute", "--execute", 0, 1 },
1747 { "-find-file", "--find-file", 0, 1 },
1748 { "-visit", "--visit", 0, 1 },
1749 { "-file", "--file", 0, 1 },
1750 { "-insert", "--insert", 0, 1 },
1752 { "-NXOpen", 0, 0, 1 },
1753 { "-NXOpenTemp", 0, 0, 1 },
1754 { "-NSOpen", 0, 0, 1 },
1755 { "-NSOpenTemp", 0, 0, 1 },
1756 { "-GSFilePath", 0, 0, 1 },
1758 /* This should be processed after ordinary file name args and the like. */
1759 { "-kill", "--kill", -10, 0 },
1762 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1763 so that the highest priority ones come first.
1764 Do not change the order of elements of equal priority.
1765 If an option takes an argument, keep it and its argument together.
1767 If an option that takes no argument appears more
1768 than once, eliminate all but one copy of it. */
1771 sort_args (int argc
, char **argv
)
1773 char **new = xmalloc (argc
* sizeof *new);
1774 /* For each element of argv,
1775 the corresponding element of options is:
1776 0 for an option that takes no arguments,
1777 1 for an option that takes one argument, etc.
1778 -1 for an ordinary non-option argument. */
1779 int *options
= xnmalloc (argc
, sizeof *options
);
1780 int *priority
= xnmalloc (argc
, sizeof *priority
);
1782 int incoming_used
= 1;
1786 /* Categorize all the options,
1787 and figure out which argv elts are option arguments. */
1788 for (from
= 1; from
< argc
; from
++)
1792 if (argv
[from
][0] == '-')
1796 /* If we have found "--", don't consider
1797 any more arguments as options. */
1798 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1800 /* Leave the "--", and everything following it, at the end. */
1801 for (; from
< argc
; from
++)
1803 priority
[from
] = -100;
1809 /* Look for a match with a known old-fashioned option. */
1810 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1811 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1813 options
[from
] = standard_args
[i
].nargs
;
1814 priority
[from
] = standard_args
[i
].priority
;
1815 if (from
+ standard_args
[i
].nargs
>= argc
)
1816 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1817 from
+= standard_args
[i
].nargs
;
1821 /* Look for a match with a known long option.
1822 MATCH is -1 if no match so far, -2 if two or more matches so far,
1823 >= 0 (the table index of the match) if just one match so far. */
1824 if (argv
[from
][1] == '-')
1826 char const *equals
= strchr (argv
[from
], '=');
1828 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1832 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1833 if (standard_args
[i
].longname
1834 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1843 /* If we found exactly one match, use that. */
1846 options
[from
] = standard_args
[match
].nargs
;
1847 priority
[from
] = standard_args
[match
].priority
;
1848 /* If --OPTION=VALUE syntax is used,
1849 this option uses just one argv element. */
1852 if (from
+ options
[from
] >= argc
)
1853 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1854 from
+= options
[from
];
1856 /* FIXME When match < 0, shouldn't there be some error,
1857 or at least indication to the user that there was a
1864 /* Copy the arguments, in order of decreasing priority, to NEW. */
1866 while (incoming_used
< argc
)
1869 int best_priority
= -9999;
1871 /* Find the highest priority remaining option.
1872 If several have equal priority, take the first of them. */
1873 for (from
= 1; from
< argc
; from
++)
1875 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1877 best_priority
= priority
[from
];
1880 /* Skip option arguments--they are tied to the options. */
1881 if (options
[from
] > 0)
1882 from
+= options
[from
];
1888 /* Copy the highest priority remaining option, with its args, to NEW.
1889 Unless it is a duplicate of the previous one. */
1890 if (! (options
[best
] == 0
1891 && ! strcmp (new[to
- 1], argv
[best
])))
1893 new[to
++] = argv
[best
];
1894 for (i
= 0; i
< options
[best
]; i
++)
1895 new[to
++] = argv
[best
+ i
+ 1];
1898 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1900 /* Clear out this option in ARGV. */
1902 for (i
= 0; i
< options
[best
]; i
++)
1903 argv
[best
+ i
+ 1] = 0;
1906 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1910 memcpy (argv
, new, sizeof (char *) * argc
);
1917 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1918 doc
: /* Exit the Emacs job and kill it.
1919 If ARG is an integer, return ARG as the exit program code.
1920 If ARG is a string, stuff it as keyboard input.
1922 This function is called upon receipt of the signals SIGTERM
1923 or SIGHUP, and upon SIGINT in batch mode.
1925 The value of `kill-emacs-hook', if not void,
1926 is a list of functions (of no args),
1927 all of which are called before Emacs is actually killed. */)
1930 struct gcpro gcpro1
;
1938 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1940 waiting_for_input
= 0;
1941 Frun_hooks (1, &Qkill_emacs_hook
);
1944 #ifdef HAVE_X_WINDOWS
1945 /* Transfer any clipboards we own to the clipboard manager. */
1946 x_clipboard_manager_save_all ();
1949 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1952 ns_release_autorelease_pool (ns_pool
);
1955 /* If we have an auto-save list file,
1956 kill it because we are exiting Emacs deliberately (not crashing).
1957 Do it after shut_down_emacs, which does an auto-save. */
1958 if (STRINGP (Vauto_save_list_file_name
))
1960 Lisp_Object listfile
;
1961 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1962 unlink (SSDATA (listfile
));
1966 exit_code
= (XINT (arg
) < 0
1967 ? XINT (arg
) | INT_MIN
1968 : XINT (arg
) & INT_MAX
);
1970 exit_code
= EXIT_SUCCESS
;
1975 /* Perform an orderly shutdown of Emacs. Autosave any modified
1976 buffers, kill any child processes, clean up the terminal modes (if
1977 we're in the foreground), and other stuff like that. Don't perform
1978 any redisplay; this may be called when Emacs is shutting down in
1979 the background, or after its X connection has died.
1981 If SIG is a signal number, print a message for it.
1983 This is called by fatal signal handlers, X protocol error handlers,
1987 shut_down_emacs (int sig
, Lisp_Object stuff
)
1989 /* Prevent running of hooks from now on. */
1992 /* Don't update display from now on. */
1993 Vinhibit_redisplay
= Qt
;
1995 /* If we are controlling the terminal, reset terminal modes. */
1998 pid_t pgrp
= getpgrp ();
1999 pid_t tpgrp
= tcgetpgrp (0);
2000 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2002 reset_all_sys_modes ();
2003 if (sig
&& sig
!= SIGTERM
)
2005 static char const format
[] = "Fatal error %d: ";
2006 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
2007 int buflen
= sprintf (buf
, format
, sig
);
2008 char const *sig_desc
= safe_strsignal (sig
);
2009 emacs_write (STDERR_FILENO
, buf
, buflen
);
2010 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
2016 reset_all_sys_modes ();
2019 stuff_buffered_input (stuff
);
2021 inhibit_sentinels
= 1;
2022 kill_buffer_processes (Qnil
);
2023 Fdo_auto_save (Qt
, Qnil
);
2025 unlock_all_files ();
2027 /* There is a tendency for a SIGIO signal to arrive within exit,
2028 and cause a SIGHUP because the input descriptor is already closed. */
2032 /* Do this only if terminating normally, we want glyph matrices
2033 etc. in a core dump. */
2034 if (sig
== 0 || sig
== SIGTERM
)
2036 check_glyph_memory ();
2037 check_message_stack ();
2045 ns_term_shutdown (sig
);
2049 xml_cleanup_parser ();
2063 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2064 doc
: /* Dump current state of Emacs into executable file FILENAME.
2065 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2066 This is used in the file `loadup.el' when building Emacs.
2068 You must run Emacs in batch mode in order to dump it. */)
2069 (Lisp_Object filename
, Lisp_Object symfile
)
2073 ptrdiff_t count
= SPECPDL_INDEX ();
2077 if (! noninteractive
)
2078 error ("Dumping Emacs works only in batch mode");
2081 error ("Emacs can be dumped only once");
2085 /* Warn if the gap between BSS end and heap start is larger than this. */
2086 # define MAX_HEAP_BSS_DIFF (1024*1024)
2088 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2090 fprintf (stderr
, "**************************************************\n");
2091 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2092 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2094 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2095 fprintf (stderr
, "fail because of this. See the section about\n");
2096 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2097 fprintf (stderr
, "**************************************************\n");
2099 #endif /* GNU_LINUX */
2101 /* Bind `command-line-processed' to nil before dumping,
2102 so that the dumped Emacs will process its command line
2103 and set up to work with X windows if appropriate. */
2104 symbol
= intern ("command-line-processed");
2105 specbind (symbol
, Qnil
);
2107 CHECK_STRING (filename
);
2108 filename
= Fexpand_file_name (filename
, Qnil
);
2109 filename
= ENCODE_FILE (filename
);
2110 if (!NILP (symfile
))
2112 CHECK_STRING (symfile
);
2113 if (SCHARS (symfile
))
2115 symfile
= Fexpand_file_name (symfile
, Qnil
);
2116 symfile
= ENCODE_FILE (symfile
);
2121 Vpurify_flag
= Qnil
;
2124 set_time_zone_rule (dump_tz
);
2125 #ifndef LOCALTIME_CACHE
2126 /* Force a tz reload, since set_time_zone_rule doesn't. */
2132 /* Tell malloc where start of impure now is. */
2133 /* Also arrange for warnings when nearly out of space. */
2134 #ifndef SYSTEM_MALLOC
2136 /* On Windows, this was done before dumping, and that once suffices.
2137 Meanwhile, my_edata is not valid on Windows. */
2139 extern char my_edata
[];
2140 memory_warnings (my_edata
, malloc_warning
);
2142 #endif /* not WINDOWSNT */
2143 #endif /* not SYSTEM_MALLOC */
2144 #ifdef DOUG_LEA_MALLOC
2145 malloc_state_ptr
= malloc_get_state ();
2148 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2150 #ifdef DOUG_LEA_MALLOC
2151 free (malloc_state_ptr
);
2155 Vlibrary_cache
= Qnil
;
2157 #ifdef HAVE_WINDOW_SYSTEM
2158 reset_image_types ();
2163 return unbind_to (count
, Qnil
);
2166 #endif /* not CANNOT_DUMP */
2169 /* Recover from setlocale (LC_ALL, ""). */
2173 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2174 so that numbers are read and printed properly for Emacs Lisp. */
2175 setlocale (LC_NUMERIC
, "C");
2178 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2181 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2183 if (! EQ (*plocale
, desired_locale
))
2185 *plocale
= desired_locale
;
2186 setlocale (category
, (STRINGP (desired_locale
)
2187 ? SSDATA (desired_locale
)
2192 /* Set system time locale to match Vsystem_time_locale, if possible. */
2194 synchronize_system_time_locale (void)
2196 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2197 Vsystem_time_locale
);
2200 /* Set system messages locale to match Vsystem_messages_locale, if
2203 synchronize_system_messages_locale (void)
2206 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2207 Vsystem_messages_locale
);
2210 #endif /* HAVE_SETLOCALE */
2214 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2216 const char *path
, *p
;
2217 Lisp_Object lpath
, element
, tem
;
2218 /* Default is to use "." for empty path elements.
2219 But if argument EMPTY is true, use nil instead. */
2220 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2223 static const char *emacs_dir_env
= "%emacs_dir%/";
2224 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2225 const char *edir
= egetenv ("emacs_dir");
2226 char emacs_dir
[MAX_UTF8_PATH
];
2228 /* egetenv looks in process-environment, which holds the variables
2229 in their original system-locale encoding. We need emacs_dir to
2232 filename_from_ansi (edir
, emacs_dir
);
2235 /* It's okay to use getenv here, because this function is only used
2236 to initialize variables when Emacs starts up, and isn't called
2239 path
= getenv (evarname
);
2250 /* Ensure values from the environment use the proper directory separator. */
2256 char *path_utf8
, *q
, *d
;
2259 /* Convert each element of PATH to UTF-8. */
2260 p
= path_copy
= alloca (strlen (path
) + 1);
2261 strcpy (path_copy
, path
);
2262 d
= path_utf8
= alloca (4 * strlen (path
) + 1);
2265 q
= _mbschr (p
, SEPCHAR
);
2268 cnv_result
= filename_from_ansi (p
, d
);
2273 /* If conversion of this PATH elements fails, make sure
2274 destination pointer will stay put, thus effectively
2275 ignoring the offending element. */
2276 if (cnv_result
== 0)
2282 else if (cnv_result
!= 0 && d
> path_utf8
)
2283 d
[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2285 path_copy
= path_utf8
;
2287 path_copy
= alloca (strlen (path
) + 1);
2288 strcpy (path_copy
, path
);
2290 dostounix_filename (path_copy
);
2297 p
= strchr (path
, SEPCHAR
);
2299 p
= path
+ strlen (path
);
2300 element
= (p
- path
? make_unibyte_string (path
, p
- path
)
2302 if (! NILP (element
))
2305 /* Relative file names in the default path are interpreted as
2306 being relative to $emacs_dir. */
2307 if (edir
&& defaulted
2308 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2309 element
= Fexpand_file_name (Fsubstring
2311 make_number (emacs_dir_len
),
2313 build_unibyte_string (emacs_dir
));
2316 /* Add /: to the front of the name
2317 if it would otherwise be treated as magic. */
2318 tem
= Ffind_file_name_handler (element
, Qt
);
2320 /* However, if the handler says "I'm safe",
2321 don't bother adding /:. */
2325 prop
= Fget (tem
, intern ("safe-magic"));
2331 element
= concat2 (build_string ("/:"), element
);
2332 } /* !NILP (element) */
2334 lpath
= Fcons (element
, lpath
);
2340 return Fnreverse (lpath
);
2343 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2344 doc
: /* Return non-nil if the current emacs process is a daemon.
2345 If the daemon was given a name argument, return that name. */)
2350 return build_string (daemon_name
);
2357 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2358 doc
: /* Mark the Emacs daemon as being initialized.
2359 This finishes the daemonization process by doing the other half of detaching
2360 from the parent process and its tty file descriptors. */)
2367 error ("This function can only be called if emacs is run as a daemon");
2369 if (daemon_pipe
[1] < 0)
2370 error ("The daemon has already been initialized");
2372 if (NILP (Vafter_init_time
))
2373 error ("This function can only be called after loading the init files");
2375 /* Get rid of stdin, stdout and stderr. */
2376 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2378 err
|= dup2 (nfd
, 0) < 0;
2379 err
|= dup2 (nfd
, 1) < 0;
2380 err
|= dup2 (nfd
, 2) < 0;
2381 err
|= emacs_close (nfd
) != 0;
2383 /* Closing the pipe will notify the parent that it can exit.
2384 FIXME: In case some other process inherited the pipe, closing it here
2385 won't notify the parent because it's still open elsewhere, so we
2386 additionally send a byte, just to make sure the parent really exits.
2387 Instead, we should probably close the pipe in start-process and
2388 call-process to make sure the pipe is never inherited by
2390 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2391 err
|= emacs_close (daemon_pipe
[1]) != 0;
2392 /* Set it to an invalid value so we know we've already run this function. */
2393 daemon_pipe
[1] = -1;
2396 error ("I/O error during daemon initialization");
2401 syms_of_emacs (void)
2403 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2404 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2405 DEFSYM (Qkill_emacs
, "kill-emacs");
2406 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2409 defsubr (&Sdump_emacs
);
2412 defsubr (&Skill_emacs
);
2414 defsubr (&Sinvocation_name
);
2415 defsubr (&Sinvocation_directory
);
2416 defsubr (&Sdaemonp
);
2417 defsubr (&Sdaemon_initialized
);
2419 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2420 doc
: /* Args passed by shell to Emacs, as a list of strings.
2421 Many arguments are deleted from the list as they are processed. */);
2423 DEFVAR_LISP ("system-type", Vsystem_type
,
2424 doc
: /* The value is a symbol indicating the type of operating system you are using.
2426 `gnu' compiled for a GNU Hurd system.
2427 `gnu/linux' compiled for a GNU/Linux system.
2428 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2429 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2430 `ms-dos' compiled as an MS-DOS application.
2431 `windows-nt' compiled as a native W32 application.
2432 `cygwin' compiled using the Cygwin library.
2433 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2434 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2435 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2436 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2438 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2439 doc
: /* Value is string indicating configuration Emacs was built for.
2440 On MS-Windows, the value reflects the OS flavor and version on which
2441 Emacs is running. */);
2442 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2444 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2445 doc
: /* String containing the configuration options Emacs was built with. */);
2446 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2448 DEFVAR_LISP ("system-configuration-features", Vsystem_configuration_features
,
2449 doc
: /* String listing some of the main features this Emacs was compiled with.
2450 An element of the form \"FOO\" generally means that HAVE_FOO was
2451 defined during the build. */);
2452 Vsystem_configuration_features
= build_string (EMACS_CONFIG_FEATURES
);
2454 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2455 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2457 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2458 doc
: /* Hook run when `kill-emacs' is called.
2459 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2460 in other similar situations), functions placed on this hook should not
2461 expect to be able to interact with the user. To ask for confirmation,
2462 see `kill-emacs-query-functions' instead.
2464 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2465 `noninteractive' was non-nil. */);
2466 Vkill_emacs_hook
= Qnil
;
2468 DEFVAR_LISP ("path-separator", Vpath_separator
,
2469 doc
: /* String containing the character that separates directories in
2470 search paths, such as PATH and other similar environment variables. */);
2473 Vpath_separator
= make_string (&c
, 1);
2476 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2477 doc
: /* The program name that was used to run Emacs.
2478 Any directory names are omitted. */);
2480 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2481 doc
: /* The directory in which the Emacs executable was found, to run it.
2482 The value is nil if that directory's name is not known. */);
2484 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2485 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2486 In an installed Emacs, this is normally nil. It is non-nil if
2487 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2488 within the variable `invocation-directory' or its parent. For example,
2489 this is the case when running an uninstalled Emacs executable from its
2490 build directory. */);
2491 Vinstallation_directory
= Qnil
;
2493 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2494 doc
: /* System locale for messages. */);
2495 Vsystem_messages_locale
= Qnil
;
2497 DEFVAR_LISP ("previous-system-messages-locale",
2498 Vprevious_system_messages_locale
,
2499 doc
: /* Most recently used system locale for messages. */);
2500 Vprevious_system_messages_locale
= Qnil
;
2502 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2503 doc
: /* System locale for time. */);
2504 Vsystem_time_locale
= Qnil
;
2506 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2507 doc
: /* Most recently used system locale for time. */);
2508 Vprevious_system_time_locale
= Qnil
;
2510 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2511 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2512 Vbefore_init_time
= Qnil
;
2514 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2515 doc
: /* Value of `current-time' after loading the init files.
2516 This is nil during initialization. */);
2517 Vafter_init_time
= Qnil
;
2519 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2520 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2521 inhibit_x_resources
= 0;
2523 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2524 doc
: /* Short copyright string for this version of Emacs. */);
2525 Vemacs_copyright
= build_string (emacs_copyright
);
2527 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2528 doc
: /* Version numbers of this version of Emacs. */);
2529 Vemacs_version
= build_string (emacs_version
);
2531 DEFVAR_LISP ("report-emacs-bug-address", Vreport_emacs_bug_address
,
2532 doc
: /* Address of mailing list for GNU Emacs bugs. */);
2533 Vreport_emacs_bug_address
= build_string (emacs_bugreport
);
2535 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2536 doc
: /* Alist of dynamic libraries vs external files implementing them.
2537 Each element is a list (LIBRARY FILE...), where the car is a symbol
2538 representing a supported external library, and the rest are strings giving
2539 alternate filenames for that library.
2541 Emacs tries to load the library from the files in the order they appear on
2542 the list; if none is loaded, the running session of Emacs won't have access
2545 Note that image types `pbm' and `xbm' do not need entries in this variable
2546 because they do not depend on external libraries and are always available.
2548 Also note that this is not a generic facility for accessing external
2549 libraries; only those already known by Emacs will be loaded. */);
2550 Vdynamic_library_alist
= Qnil
;
2551 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2554 Vlibrary_cache
= Qnil
;
2555 staticpro (&Vlibrary_cache
);