1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2015 Free Software
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 */
63 #include "intervals.h"
64 #include "character.h"
73 #include "blockinput.h"
74 #include "syssignal.h"
77 #include "termhooks.h"
82 #include "composite.h"
83 #include "dispextern.h"
86 #include "sysselect.h"
91 #if (defined PROFILING \
92 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
93 # include <sys/gmon.h>
94 extern void moncontrol (int mode
);
101 #ifdef HAVE_SETRLIMIT
102 #include <sys/time.h>
103 #include <sys/resource.h>
106 #ifdef HAVE_PERSONALITY_LINUX32
107 #include <sys/personality.h>
110 static const char emacs_version
[] = PACKAGE_VERSION
;
111 static const char emacs_copyright
[] = COPYRIGHT
;
112 static const char emacs_bugreport
[] = PACKAGE_BUGREPORT
;
114 /* Empty lisp strings. To avoid having to build any others. */
115 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
118 /* Cache for externally loaded libraries. */
119 Lisp_Object Vlibrary_cache
;
122 /* Set after Emacs has started up the first time.
123 Prevents reinitialization of the Lisp world and keymaps
124 on subsequent starts. */
127 /* Set to true if this instance of Emacs might dump. */
131 extern void unexec_init_emacs_zone (void);
134 #ifdef DOUG_LEA_MALLOC
135 /* Preserves a pointer to the memory allocated that copies that
136 static data inside glibc's malloc. */
137 static void *malloc_state_ptr
;
138 /* From glibc, a routine that returns a copy of the malloc internal state. */
139 extern void *malloc_get_state (void);
140 /* From glibc, a routine that overwrites the malloc internal state. */
141 extern int malloc_set_state (void *);
142 /* True if the MALLOC_CHECK_ environment variable was set while
143 dumping. Used to work around a bug in glibc's malloc. */
144 static bool malloc_using_checking
;
145 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
146 extern void malloc_enable_thread (void);
149 /* If true, Emacs should not attempt to use a window-specific code,
150 but instead should use the virtual terminal under which it was started. */
151 bool inhibit_window_system
;
153 /* If true, a filter or a sentinel is running. Tested to save the match
154 data on the first attempt to change it inside asynchronous code. */
155 bool running_asynch_code
;
157 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
158 /* If true, -d was specified, meaning we're using some window system. */
162 /* An address near the bottom of the stack.
163 Tells GC how to save a copy of the stack. */
166 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
167 /* The address where the heap starts (from the first sbrk (0) call). */
168 static void *my_heap_start
;
172 /* The gap between BSS end and heap start as far as we can tell. */
173 static uprintmax_t heap_bss_diff
;
176 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
179 On Cocoa, CoreFoundation lib fails in forked process:
180 http://developer.apple.com/ReleaseNotes/
181 CoreFoundation/CoreFoundation.html)
183 On Windows, a Cygwin fork child cannot access the USER subsystem.
185 We mark being in the exec'd process by a daemon name argument of
186 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
187 NAME is the original daemon name, if any. */
188 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
189 # define DAEMON_MUST_EXEC
192 /* True means running Emacs without interactive terminal. */
195 /* True means remove site-lisp directories from load-path. */
198 /* Name for the server started by the daemon.*/
199 static char *daemon_name
;
201 /* Pipe used to send exit notification to the daemon parent at
205 /* Save argv and argc. */
209 static void sort_args (int argc
, char **argv
);
210 static void syms_of_emacs (void);
212 /* C99 needs each string to be at most 4095 characters, and the usage
213 strings below are split to not overflow this limit. */
214 static char const *const usage_message
[] =
217 Run Emacs, the extensible, customizable, self-documenting real-time\n\
218 display editor. The recommended way to start Emacs for normal editing\n\
219 is with no options at all.\n\
221 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
222 read the main documentation for these command-line arguments.\n\
224 Initialization options:\n\
228 --batch do not do interactive display; implies -q\n\
229 --chdir DIR change to directory DIR\n\
230 --daemon start a server in the background\n\
231 --debug-init enable Emacs Lisp debugger for init file\n\
232 --display, -d DISPLAY use X server DISPLAY\n\
235 --no-desktop do not load a saved desktop\n\
236 --no-init-file, -q load neither ~/.emacs nor default.el\n\
237 --no-shared-memory, -nl do not use shared memory\n\
238 --no-site-file do not load site-start.el\n\
239 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
240 --no-splash do not display a splash screen on startup\n\
241 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
244 --quick, -Q equivalent to:\n\
245 -q --no-site-file --no-site-lisp --no-splash\n\
246 --script FILE run FILE as an Emacs Lisp script\n\
247 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
254 FILE visit FILE using find-file\n\
255 +LINE go to line LINE in next FILE\n\
256 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
257 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
258 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
259 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
262 --file FILE visit FILE using find-file\n\
263 --find-file FILE visit FILE using find-file\n\
264 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
265 --insert FILE insert contents of FILE into current buffer\n\
266 --kill exit without asking for confirmation\n\
267 --load, -l FILE load Emacs Lisp FILE using the load function\n\
268 --visit FILE visit FILE using find-file\n\
274 --background-color, -bg COLOR window background color\n\
275 --basic-display, -D disable many display features;\n\
276 used for debugging Emacs\n\
277 --border-color, -bd COLOR main border color\n\
278 --border-width, -bw WIDTH width of main border\n\
281 --color, --color=MODE override color mode for character terminals;\n\
282 MODE defaults to `auto', and\n\
283 can also be `never', `always',\n\
284 or a mode name like `ansi8'\n\
285 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
286 --font, -fn FONT default font; must be fixed-width\n\
287 --foreground-color, -fg COLOR window foreground color\n\
290 --fullheight, -fh make the first frame high as the screen\n\
291 --fullscreen, -fs make the first frame fullscreen\n\
292 --fullwidth, -fw make the first frame wide as the screen\n\
293 --maximized, -mm make the first frame maximized\n\
294 --geometry, -g GEOMETRY window geometry\n\
297 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
298 --iconic start Emacs in iconified state\n\
299 --internal-border, -ib WIDTH width between text and main border\n\
300 --line-spacing, -lsp PIXELS additional space to put between lines\n\
301 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
302 --name NAME title for initial Emacs frame\n\
305 --no-blinking-cursor, -nbc disable blinking cursor\n\
306 --reverse-video, -r, -rv switch foreground and background\n\
307 --title, -T TITLE title for initial Emacs frame\n\
308 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
309 --xrm XRESOURCES set additional X resources\n\
310 --parent-id XID set parent window\n\
311 --help display this help and exit\n\
312 --version output version information and exit\n\
316 You can generally also specify long option names with a single -; for\n\
317 example, -batch as well as --batch. You can use any unambiguous\n\
318 abbreviation for a --option.\n\
320 Various environment variables and window system resources also affect\n\
321 the operation of Emacs. See the main documentation.\n\
323 Report bugs to " PACKAGE_BUGREPORT
". First, please see the Bugs\n\
324 section of the Emacs manual or the file BUGS.\n"
328 /* True if handling a fatal error already. */
329 bool fatal_error_in_progress
;
332 /* NS autrelease pool, for memory management. */
333 static void *ns_pool
;
338 setlocale (int cat
, char const *locale
)
345 /* Report a fatal error due to signal SIG, output a backtrace of at
346 most BACKTRACE_LIMIT lines, and exit. */
348 terminate_due_to_signal (int sig
, int backtrace_limit
)
350 signal (sig
, SIG_DFL
);
351 totally_unblock_input ();
353 /* If fatal error occurs in code below, avoid infinite recursion. */
354 if (! fatal_error_in_progress
)
356 fatal_error_in_progress
= 1;
358 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
359 Fkill_emacs (make_number (sig
));
361 shut_down_emacs (sig
, Qnil
);
362 emacs_backtrace (backtrace_limit
);
365 /* Signal the same code; this time it will really be fatal.
366 Since we're in a signal handler, the signal is blocked, so we
367 have to unblock it if we want to really receive it. */
371 sigemptyset (&unblocked
);
372 sigaddset (&unblocked
, sig
);
373 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
379 /* This shouldn't be executed, but it prevents a warning. */
383 /* Code for dealing with Lisp access to the Unix command line. */
386 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
389 Lisp_Object name
, dir
, handler
;
390 ptrdiff_t count
= SPECPDL_INDEX ();
391 Lisp_Object raw_name
;
392 AUTO_STRING (slash_colon
, "/:");
398 /* Must use argv[0] converted to UTF-8, as it begets many standard
399 file and directory names. */
401 char argv0
[MAX_UTF8_PATH
];
403 if (filename_from_ansi (argv
[0], argv0
) == 0)
404 raw_name
= build_unibyte_string (argv0
);
406 raw_name
= build_unibyte_string (argv
[0]);
409 raw_name
= build_unibyte_string (argv
[0]);
412 /* Add /: to the front of the name
413 if it would otherwise be treated as magic. */
414 handler
= Ffind_file_name_handler (raw_name
, Qt
);
415 if (! NILP (handler
))
416 raw_name
= concat2 (slash_colon
, raw_name
);
418 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
419 Vinvocation_directory
= Ffile_name_directory (raw_name
);
421 /* If we got no directory in argv[0], search PATH to find where
422 Emacs actually came from. */
423 if (NILP (Vinvocation_directory
))
426 int yes
= openp (Vexec_path
, Vinvocation_name
,
427 Vexec_suffixes
, &found
, make_number (X_OK
), false);
430 /* Add /: to the front of the name
431 if it would otherwise be treated as magic. */
432 handler
= Ffind_file_name_handler (found
, Qt
);
433 if (! NILP (handler
))
434 found
= concat2 (slash_colon
, found
);
435 Vinvocation_directory
= Ffile_name_directory (found
);
439 if (!NILP (Vinvocation_directory
)
440 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
441 /* Emacs was started with relative path, like ./emacs.
445 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
447 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
450 Vinstallation_directory
= Qnil
;
452 if (!NILP (Vinvocation_directory
))
454 dir
= Vinvocation_directory
;
456 /* If we are running from the build directory, set DIR to the
457 src subdirectory of the Emacs tree, like on Posix
459 if (SBYTES (dir
) > sizeof ("/i386/") - 1
460 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
462 dir
= Fexpand_file_name (build_string ("../.."), dir
);
463 #else /* !WINDOWSNT */
465 name
= Fexpand_file_name (Vinvocation_name
, dir
);
468 Lisp_Object tem
, lib_src_exists
;
469 Lisp_Object etc_exists
, info_exists
;
471 /* See if dir contains subdirs for use by Emacs.
472 Check for the ones that would exist in a build directory,
473 not including lisp and info. */
474 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
475 lib_src_exists
= Ffile_exists_p (tem
);
478 /* MSDOS installations frequently remove lib-src, but we still
479 must set installation-directory, or else info won't find
480 its files (it uses the value of installation-directory). */
481 tem
= Fexpand_file_name (build_string ("info"), dir
);
482 info_exists
= Ffile_exists_p (tem
);
487 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
489 tem
= Fexpand_file_name (build_string ("etc"), dir
);
490 etc_exists
= Ffile_exists_p (tem
);
491 if (!NILP (etc_exists
))
493 Vinstallation_directory
494 = Ffile_name_as_directory (dir
);
499 /* See if dir's parent contains those subdirs. */
500 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
501 lib_src_exists
= Ffile_exists_p (tem
);
505 /* See the MSDOS commentary above. */
506 tem
= Fexpand_file_name (build_string ("../info"), dir
);
507 info_exists
= Ffile_exists_p (tem
);
512 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
514 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
515 etc_exists
= Ffile_exists_p (tem
);
516 if (!NILP (etc_exists
))
518 tem
= Fexpand_file_name (build_string (".."), dir
);
519 Vinstallation_directory
520 = Ffile_name_as_directory (tem
);
525 /* If the Emacs executable is actually a link,
526 next try the dir that the link points into. */
527 tem
= Ffile_symlink_p (name
);
530 name
= Fexpand_file_name (tem
, dir
);
531 dir
= Ffile_name_directory (name
);
538 Vcommand_line_args
= Qnil
;
540 for (i
= argc
- 1; i
>= 0; i
--)
542 if (i
== 0 || i
> skip_args
)
543 /* For the moment, we keep arguments as is in unibyte strings.
544 They are decoded in the function command-line after we know
545 locale-coding-system. */
547 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
550 unbind_to (count
, Qnil
);
553 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
554 doc
: /* Return the program name that was used to run Emacs.
555 Any directory names are omitted. */)
558 return Fcopy_sequence (Vinvocation_name
);
561 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
563 doc
: /* Return the directory name in which the Emacs executable was located. */)
566 return Fcopy_sequence (Vinvocation_directory
);
570 /* Test whether the next argument in ARGV matches SSTR or a prefix of
571 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
572 (the argument is supposed to have a value) store in *VALPTR either
573 the next argument or the portion of this one after the equal sign.
574 ARGV is read starting at position *SKIPPTR; this index is advanced
575 by the number of arguments used.
577 Too bad we can't just use getopt for all of this, but we don't have
578 enough information to do it right. */
581 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
582 int minlen
, char **valptr
, int *skipptr
)
588 /* Don't access argv[argc]; give up in advance. */
589 if (argc
<= *skipptr
+ 1)
592 arg
= argv
[*skipptr
+1];
595 if (strcmp (arg
, sstr
) == 0)
599 *valptr
= argv
[*skipptr
+2];
606 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
607 ? p
- arg
: strlen (arg
));
608 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
610 else if (valptr
== NULL
)
621 else if (argv
[*skipptr
+2] != NULL
)
623 *valptr
= argv
[*skipptr
+2];
633 #ifdef DOUG_LEA_MALLOC
635 /* malloc can be invoked even before main (e.g. by the dynamic
636 linker), so the dumped malloc state must be restored as early as
637 possible using this special hook. */
640 malloc_initialize_hook (void)
644 if (!malloc_using_checking
)
645 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
646 ignored if the heap to be restored was constructed without
647 malloc checking. Can't use unsetenv, since that calls malloc. */
651 for (p
= environ
; p
&& *p
; p
++)
652 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
661 malloc_set_state (malloc_state_ptr
);
662 #ifndef XMALLOC_OVERRUN_CHECK
663 free (malloc_state_ptr
);
668 if (my_heap_start
== 0)
669 my_heap_start
= sbrk (0);
670 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
674 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
676 #endif /* DOUG_LEA_MALLOC */
678 /* Close standard output and standard error, reporting any write
679 errors as best we can. This is intended for use with atexit. */
681 close_output_streams (void)
683 if (close_stream (stdout
) != 0)
685 emacs_perror ("Write error to standard output");
686 _exit (EXIT_FAILURE
);
689 if (close_stream (stderr
) != 0)
690 _exit (EXIT_FAILURE
);
695 main (int argc
, char **argv
)
700 char stack_bottom_variable
;
701 bool do_initial_setlocale
;
704 #ifdef HAVE_SETRLIMIT
710 #ifdef DAEMON_MUST_EXEC
715 /* If we use --chdir, this records the original directory. */
716 char *original_pwd
= 0;
723 might_dump
= !initialized
;
729 if (my_heap_start
== 0)
730 my_heap_start
= sbrk (0);
732 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
736 #if defined WINDOWSNT || defined HAVE_NTGUI
737 /* Set global variables used to detect Windows version. Do this as
738 early as possible. (unexw32.c calls this function as well, but
739 the additional call here is harmless.) */
740 cache_system_info ();
742 /* On Windows 9X, we have to load UNICOWS.DLL as early as possible,
743 to have non-stub implementations of APIs we need to convert file
744 names between UTF-8 and the system's ANSI codepage. */
745 maybe_load_unicows_dll ();
749 #ifdef RUN_TIME_REMAP
751 run_time_remap (argv
[0]);
754 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
757 unexec_init_emacs_zone ();
760 atexit (close_output_streams
);
762 sort_args (argc
, argv
);
764 while (argv
[argc
]) argc
++;
766 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
768 const char *version
, *copyright
;
771 Lisp_Object tem
, tem2
;
772 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
773 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
776 fprintf (stderr
, "Invalid value of `emacs-version'\n");
781 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
786 version
= SSDATA (tem
);
787 copyright
= SSDATA (tem2
);
792 version
= emacs_version
;
793 copyright
= emacs_copyright
;
795 printf ("%s %s\n", PACKAGE_NAME
, version
);
796 printf ("%s\n", copyright
);
797 printf ("%s comes with ABSOLUTELY NO WARRANTY.\n", PACKAGE_NAME
);
798 printf ("You may redistribute copies of %s\n", PACKAGE_NAME
);
799 printf ("under the terms of the GNU General Public License.\n");
800 printf ("For more information about these matters, ");
801 printf ("see the file named COPYING.\n");
805 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
808 /* argv[] array is kept in its original ANSI codepage encoding,
809 we need to convert to UTF-8, for chdir to work. */
810 char newdir
[MAX_UTF8_PATH
];
812 filename_from_ansi (ch_to_dir
, newdir
);
815 original_pwd
= get_current_dir_name ();
816 if (chdir (ch_to_dir
) != 0)
818 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
819 argv
[0], ch_to_dir
, strerror (errno
));
824 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
825 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
827 #ifdef HAVE_PERSONALITY_LINUX32
828 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
830 /* Set this so we only do this once. */
831 xputenv ("EMACS_HEAP_EXEC=true");
833 /* A flag to turn off address randomization which is introduced
834 in linux kernel shipped with fedora core 4 */
835 #define ADD_NO_RANDOMIZE 0x0040000
836 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
837 #undef ADD_NO_RANDOMIZE
839 execvp (argv
[0], argv
);
841 /* If the exec fails, try to dump anyway. */
842 emacs_perror (argv
[0]);
844 #endif /* HAVE_PERSONALITY_LINUX32 */
846 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
847 /* Extend the stack space available.
848 Don't do that if dumping, since some systems (e.g. DJGPP)
849 might define a smaller stack limit at that time. */
852 && (!noninteractive
|| initialized
)
854 && !getrlimit (RLIMIT_STACK
, &rlim
))
857 /* Approximate the amount regex.c needs per unit of re_max_failures. */
858 int ratio
= 20 * sizeof (char *);
859 /* Then add 33% to cover the size of the smaller stacks that regex.c
860 successively allocates and discards, on its way to the maximum. */
862 /* Add in some extra to cover
863 what we're likely to use for other reasons. */
864 newlim
= re_max_failures
* ratio
+ 200000;
866 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
867 stack allocation routine for new process that the allocation
868 fails if stack limit is not on page boundary. So, round up the
869 new limit to page boundary. */
870 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
872 if (newlim
> rlim
.rlim_max
)
874 newlim
= rlim
.rlim_max
;
875 /* Don't let regex.c overflow the stack we have. */
876 re_max_failures
= (newlim
- 200000) / ratio
;
878 if (rlim
.rlim_cur
< newlim
)
879 rlim
.rlim_cur
= newlim
;
881 setrlimit (RLIMIT_STACK
, &rlim
);
883 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
885 /* Record (approximately) where the stack begins. */
886 stack_bottom
= &stack_bottom_variable
;
890 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
891 /* Arrange to get warning messages as memory fills up. */
892 memory_warnings (0, malloc_warning
);
894 /* Call malloc at least once, to run malloc_initialize_hook.
895 Also call realloc and free for consistency. */
896 free (realloc (malloc (4), 4));
898 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
901 SET_BINARY (fileno (stdin
));
903 SET_BINARY (fileno (stdout
));
906 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
907 The build procedure uses this while dumping, to ensure that the
908 dumped Emacs does not have its system locale tables initialized,
909 as that might cause screwups when the dumped Emacs starts up. */
911 char *lc_all
= getenv ("LC_ALL");
912 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
915 /* Set locale now, so that initial error messages are localized properly.
916 fixup_locale must wait until later, since it builds strings. */
917 if (do_initial_setlocale
)
918 setlocale (LC_ALL
, "");
920 inhibit_window_system
= 0;
922 /* Handle the -t switch, which specifies filename to use as terminal. */
926 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
931 result
= emacs_open (term
, O_RDWR
, 0);
932 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
934 char *errstring
= strerror (errno
);
935 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
940 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
943 fprintf (stderr
, "Using %s\n", term
);
944 #ifdef HAVE_WINDOW_SYSTEM
945 inhibit_window_system
= 1; /* -t => -nw */
952 /* Command line option --no-windows is deprecated and thus not mentioned
953 in the manual and usage information. */
954 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
955 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
956 inhibit_window_system
= 1;
958 /* Handle the -batch switch, which means don't do interactive display. */
960 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
963 Vundo_outer_limit
= Qnil
;
965 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
967 noninteractive
= 1; /* Set batch mode. */
968 /* Convert --script to -scriptload, un-skip it, and sort again
969 so that it will be handled in proper sequence. */
970 /* FIXME broken for --script=FILE - is that supposed to work? */
971 argv
[skip_args
- 1] = (char *) "-scriptload";
973 sort_args (argc
, argv
);
976 /* Handle the --help option, which gives a usage message. */
977 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
980 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
981 for (i
= 0; i
< ARRAYELTS (usage_message
); i
++)
982 fputs (usage_message
[i
], stdout
);
986 /* Make sure IS_DAEMON starts up as false. */
989 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
990 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
995 /* Start as a daemon: fork a new child process which will run the
996 rest of the initialization code, then exit.
998 Detaching a daemon requires the following steps:
1002 - close the tty file-descriptors
1004 We only want to do the last 2 steps once the daemon is ready to
1005 serve requests, i.e. after loading .emacs (initialization).
1006 OTOH initialization may start subprocesses (e.g. ispell) and these
1007 should be run from the proper process (the one that will end up
1008 running as daemon) and with the proper "session id" in order for
1009 them to keep working after detaching, so fork and setsid need to be
1010 performed before initialization.
1012 We want to avoid exiting before the server socket is ready, so
1013 use a pipe for synchronization. The parent waits for the child
1014 to close its end of the pipe (using `daemon-initialized')
1016 if (emacs_pipe (daemon_pipe
) != 0)
1018 fprintf (stderr
, "Cannot pipe!\n");
1022 #ifndef DAEMON_MUST_EXEC
1024 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1025 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1026 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1027 #endif /* USE_GTK */
1029 #else /* DAEMON_MUST_EXEC */
1030 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1031 f
= fork (); /* in orig */
1033 f
= 0; /* in exec'd */
1034 #endif /* !DAEMON_MUST_EXEC */
1040 /* Close unused writing end of the pipe. */
1041 emacs_close (daemon_pipe
[1]);
1043 /* Just wait for the child to close its end of the pipe. */
1046 retval
= read (daemon_pipe
[0], &buf
, 1);
1048 while (retval
== -1 && errno
== EINTR
);
1052 fprintf (stderr
, "Error reading status from child\n");
1055 else if (retval
== 0)
1057 fprintf (stderr
, "Error: server did not start correctly\n");
1061 emacs_close (daemon_pipe
[0]);
1066 emacs_perror ("fork");
1067 exit (EXIT_CANCELED
);
1070 #ifdef DAEMON_MUST_EXEC
1072 /* In orig process, forked as child, OR in exec'd. */
1073 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1074 { /* In orig, child: now exec w/special daemon name. */
1077 snprintf (fdStr
, sizeof fdStr
,
1078 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1079 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1081 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1083 fprintf (stderr
, "daemon: child name too long\n");
1084 exit (EXIT_CANNOT_INVOKE
);
1087 argv
[skip_args
] = fdStr
;
1089 fcntl (daemon_pipe
[0], F_SETFD
, 0);
1090 fcntl (daemon_pipe
[1], F_SETFD
, 0);
1091 execvp (argv
[0], argv
);
1092 emacs_perror (argv
[0]);
1093 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1096 /* In exec'd: parse special dname into pipe and name info. */
1097 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1098 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1100 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1101 exit (EXIT_CANNOT_INVOKE
);
1103 dname_arg2
[0] = '\0';
1104 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1106 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1107 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1109 #endif /* DAEMON_MUST_EXEC */
1112 daemon_name
= xstrdup (dname_arg
);
1113 /* Close unused reading end of the pipe. */
1114 emacs_close (daemon_pipe
[0]);
1118 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1123 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC \
1124 && !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC
1125 # ifndef CANNOT_DUMP
1126 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1127 that causes an infinite recursive loop with FreeBSD. See
1128 Bug#14569. The part of this bug involving Cygwin is no longer
1129 relevant, now that Cygwin defines HYBRID_MALLOC. */
1130 if (!noninteractive
|| initialized
)
1132 malloc_enable_thread ();
1135 init_signals (dumping
);
1137 noninteractive1
= noninteractive
;
1139 /* Perform basic initializations (not merely interning symbols). */
1146 init_charset_once ();
1147 init_coding_once ();
1148 init_syntax_once (); /* Create standard syntax table. */
1149 init_category_once (); /* Create standard category table. */
1150 init_casetab_once (); /* Must be done before init_buffer_once. */
1151 init_buffer_once (); /* Create buffer table and some buffers. */
1152 init_minibuf_once (); /* Create list of minibuffers. */
1153 /* Must precede init_window_once. */
1155 /* Call syms_of_xfaces before init_window_once because that
1156 function creates Vterminal_frame. Termcap frames now use
1157 faces, and the face implementation uses some symbols as
1160 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1161 be better to arrange things not to have this dependency. */
1163 /* Call syms_of_keyboard before init_window_once because
1164 keyboard sets up symbols that include some face names that
1165 the X support will want to use. This can happen when
1166 CANNOT_DUMP is defined. */
1167 syms_of_keyboard ();
1169 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1171 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1173 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1175 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1177 /* Before syms_of_coding because it initializes Qcharsetp. */
1179 /* Before init_window_once, because it sets up the
1180 Vcoding_system_hash_table. */
1181 syms_of_coding (); /* This should be after syms_of_fileio. */
1183 init_window_once (); /* Init the window system. */
1184 #ifdef HAVE_WINDOW_SYSTEM
1185 init_fringe_once (); /* Swap bitmaps if necessary. */
1186 #endif /* HAVE_WINDOW_SYSTEM */
1191 if (do_initial_setlocale
)
1194 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1195 Vsystem_time_locale
= Vprevious_system_time_locale
;
1200 running_asynch_code
= 0;
1204 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1207 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1210 ns_pool
= ns_alloc_autorelease_pool ();
1211 #ifdef NS_IMPL_GNUSTEP
1212 /* GNUstep stupidly resets our locale settings after we made them. */
1216 if (!noninteractive
)
1218 #ifdef NS_IMPL_COCOA
1219 /* Started from GUI? */
1220 /* FIXME: Do the right thing if getenv returns NULL, or if
1222 if (! inhibit_window_system
&& ! isatty (0) && ! ch_to_dir
)
1223 chdir (getenv ("HOME"));
1224 if (skip_args
< argc
)
1226 if (!strncmp (argv
[skip_args
], "-psn", 4))
1229 if (! ch_to_dir
) chdir (getenv ("HOME"));
1231 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1234 if (! ch_to_dir
) chdir (getenv ("HOME"));
1239 #endif /* HAVE_NS */
1241 #ifdef HAVE_X_WINDOWS
1242 /* Stupid kludge to catch command-line display spec. We can't
1243 handle this argument entirely in window system dependent code
1244 because we don't even know which window system dependent code
1245 to run until we've recognized this argument. */
1247 char *displayname
= 0;
1248 int count_before
= skip_args
;
1250 /* Skip any number of -d options, but only use the last one. */
1253 int count_before_this
= skip_args
;
1255 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1257 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1262 count_before
= count_before_this
;
1265 /* If we have the form --display=NAME,
1266 convert it into -d name.
1267 This requires inserting a new element into argv. */
1268 if (displayname
&& count_before
< skip_args
)
1270 if (skip_args
== count_before
+ 1)
1272 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1273 (argc
- (count_before
+ 2)) * sizeof *argv
);
1274 argv
[count_before
+ 2] = displayname
;
1277 argv
[count_before
+ 1] = (char *) "-d";
1282 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1283 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1287 /* Don't actually discard this arg. */
1288 skip_args
= count_before
;
1290 #else /* !HAVE_X_WINDOWS */
1293 int count_before
= skip_args
;
1295 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1296 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1299 skip_args
= count_before
;
1303 /* argmatch must not be used after here,
1304 except when building temacs
1305 because the -d argument has not been skipped in skip_args. */
1308 /* Call early 'cause init_environment needs it. */
1310 /* Set defaults for several environment variables. */
1312 init_environment (argc
, argv
, skip_args
);
1317 #ifdef HAVE_GFILENOTIFY
1318 globals_of_gfilenotify ();
1323 #ifdef HAVE_W32NOTIFY
1324 globals_of_w32notify ();
1326 /* Initialize environment from registry settings. */
1327 init_environment (argv
);
1328 init_ntproc (dumping
); /* must precede init_editfns. */
1331 /* Initialize and GC-protect Vinitial_environment and
1332 Vprocess_environment before set_initial_environment fills them
1335 syms_of_callproc ();
1336 /* egetenv is a pretty low-level facility, which may get called in
1337 many circumstances; it seems flimsy to put off initializing it
1338 until calling init_callproc. Do not do it when dumping. */
1340 set_initial_environment ();
1342 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1343 if this is not done. Do it after set_global_environment so that we
1344 don't pollute Vglobal_environment. */
1345 /* Setting LANG here will defeat the startup locale processing... */
1350 /* Init buffer storage and default directory of main buffer. */
1351 init_buffer (initialized
);
1353 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1355 /* Must precede init_lread. */
1356 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1360 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1361 Lisp_Object old_log_max
;
1362 old_log_max
= Vmessage_log_max
;
1363 XSETFASTINT (Vmessage_log_max
, 0);
1364 message_dolog ("", 0, 1, 0);
1365 Vmessage_log_max
= old_log_max
;
1368 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1372 /* Check to see if Emacs has been installed correctly. */
1373 check_windows_init_file ();
1376 /* Intern the names of all standard functions and variables;
1377 define standard keys. */
1381 /* The basic levels of Lisp must come first. Note that
1382 syms_of_data and some others have already been called. */
1387 syms_of_floatfns ();
1390 syms_of_bytecode ();
1392 syms_of_casefiddle ();
1394 syms_of_category ();
1396 syms_of_character ();
1403 syms_of_filelock ();
1406 /* syms_of_keymap (); */
1414 syms_of_terminal ();
1420 syms_of_textprop ();
1421 syms_of_composite ();
1424 #endif /* WINDOWSNT */
1431 #ifdef HAVE_WINDOW_SYSTEM
1434 #endif /* HAVE_WINDOW_SYSTEM */
1435 #ifdef HAVE_X_WINDOWS
1440 #ifdef HAVE_XWIDGETS
1443 syms_of_xsettings ();
1450 #endif /* HAVE_X_WINDOWS */
1457 syms_of_decompress ();
1467 #endif /* HAVE_NTGUI */
1469 #if defined WINDOWSNT || defined HAVE_NTGUI
1470 syms_of_w32select ();
1477 syms_of_win16select ();
1484 syms_of_nsselect ();
1486 #endif /* HAVE_NS */
1490 #ifdef HAVE_GFILENOTIFY
1491 syms_of_gfilenotify ();
1492 #endif /* HAVE_GFILENOTIFY */
1496 #endif /* HAVE_INOTIFY */
1499 syms_of_dbusbind ();
1500 #endif /* HAVE_DBUS */
1504 #ifdef HAVE_W32NOTIFY
1505 syms_of_w32notify ();
1506 #endif /* HAVE_W32NOTIFY */
1507 #endif /* WINDOWSNT */
1509 syms_of_profiler ();
1511 keys_of_casefiddle ();
1514 keys_of_keyboard ();
1520 /* Initialization that must be done even if the global variable
1521 initialized is non zero. */
1523 globals_of_w32font ();
1524 globals_of_w32fns ();
1525 globals_of_w32menu ();
1526 #endif /* HAVE_NTGUI */
1528 #if defined WINDOWSNT || defined HAVE_NTGUI
1529 globals_of_w32select ();
1535 /* This calls putenv and so must precede init_process_emacs. Also,
1536 it sets Voperating_system_release, which init_process_emacs uses. */
1539 /* These two call putenv. */
1547 /* This can create a thread that may call getenv, so it must follow
1548 all calls to putenv and setenv. Also, this sets up
1549 add_keyboard_wait_descriptor, which init_display uses. */
1550 init_process_emacs ();
1552 init_keyboard (); /* This too must precede init_sys_modes. */
1553 if (!noninteractive
)
1554 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1557 init_crit (); /* w32notify.c needs this in batch mode. */
1558 #endif /* HAVE_W32NOTIFY */
1560 #ifdef HAVE_WINDOW_SYSTEM
1562 #endif /* HAVE_WINDOW_SYSTEM */
1570 /* Handle -l loadup, args passed by Makefile. */
1571 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1574 char file_utf8
[MAX_UTF8_PATH
];
1576 if (filename_from_ansi (file
, file_utf8
) == 0)
1579 Vtop_level
= list2 (intern_c_string ("load"),
1580 build_unibyte_string (file
));
1582 /* Unless next switch is -nl, load "loadup.el" first thing. */
1584 Vtop_level
= list2 (intern_c_string ("load"),
1585 build_string ("loadup.el"));
1588 /* Set up for profiling. This is known to work on FreeBSD,
1589 GNU/Linux and MinGW. It might work on some other systems too.
1590 Give it a try and tell us if it works on your system. To compile
1591 for profiling, use the configure option --enable-profiling. */
1592 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1597 extern unsigned char etext
asm ("etext");
1603 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1612 /* Enter editor command loop. This never returns. */
1618 /* Sort the args so we can find the most important ones
1619 at the beginning of argv. */
1621 /* First, here's a table of all the standard options. */
1623 struct standard_args
1626 const char *longname
;
1631 static const struct standard_args standard_args
[] =
1633 { "-version", "--version", 150, 0 },
1634 { "-chdir", "--chdir", 130, 1 },
1635 { "-t", "--terminal", 120, 1 },
1636 { "-nw", "--no-window-system", 110, 0 },
1637 { "-nw", "--no-windows", 110, 0 },
1638 { "-batch", "--batch", 100, 0 },
1639 { "-script", "--script", 100, 1 },
1640 { "-daemon", "--daemon", 99, 0 },
1641 { "-help", "--help", 90, 0 },
1642 { "-nl", "--no-loadup", 70, 0 },
1643 { "-nsl", "--no-site-lisp", 65, 0 },
1644 /* -d must come last before the options handled in startup.el. */
1645 { "-d", "--display", 60, 1 },
1646 { "-display", 0, 60, 1 },
1647 /* Now for the options handled in `command-line' (startup.el). */
1648 /* (Note that to imply -nsl, -Q is partially handled here.) */
1649 { "-Q", "--quick", 55, 0 },
1650 { "-quick", 0, 55, 0 },
1651 { "-q", "--no-init-file", 50, 0 },
1652 { "-no-init-file", 0, 50, 0 },
1653 { "-no-site-file", "--no-site-file", 40, 0 },
1654 { "-u", "--user", 30, 1 },
1655 { "-user", 0, 30, 1 },
1656 { "-debug-init", "--debug-init", 20, 0 },
1657 { "-iconic", "--iconic", 15, 0 },
1658 { "-D", "--basic-display", 12, 0},
1659 { "-basic-display", 0, 12, 0},
1660 { "-nbc", "--no-blinking-cursor", 12, 0 },
1661 /* Now for the options handled in `command-line-1' (startup.el). */
1662 { "-nbi", "--no-bitmap-icon", 10, 0 },
1663 { "-bg", "--background-color", 10, 1 },
1664 { "-background", 0, 10, 1 },
1665 { "-fg", "--foreground-color", 10, 1 },
1666 { "-foreground", 0, 10, 1 },
1667 { "-bd", "--border-color", 10, 1 },
1668 { "-bw", "--border-width", 10, 1 },
1669 { "-ib", "--internal-border", 10, 1 },
1670 { "-ms", "--mouse-color", 10, 1 },
1671 { "-cr", "--cursor-color", 10, 1 },
1672 { "-fn", "--font", 10, 1 },
1673 { "-font", 0, 10, 1 },
1674 { "-fs", "--fullscreen", 10, 0 },
1675 { "-fw", "--fullwidth", 10, 0 },
1676 { "-fh", "--fullheight", 10, 0 },
1677 { "-mm", "--maximized", 10, 0 },
1678 { "-g", "--geometry", 10, 1 },
1679 { "-geometry", 0, 10, 1 },
1680 { "-T", "--title", 10, 1 },
1681 { "-title", 0, 10, 1 },
1682 { "-name", "--name", 10, 1 },
1683 { "-xrm", "--xrm", 10, 1 },
1684 { "-parent-id", "--parent-id", 10, 1 },
1685 { "-r", "--reverse-video", 5, 0 },
1687 { "-reverse", 0, 5, 0 },
1688 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1689 { "-vb", "--vertical-scroll-bars", 5, 0 },
1690 { "-color", "--color", 5, 0},
1691 { "-no-splash", "--no-splash", 3, 0 },
1692 { "-no-desktop", "--no-desktop", 3, 0 },
1694 { "-NSAutoLaunch", 0, 5, 1 },
1695 { "-NXAutoLaunch", 0, 5, 1 },
1696 { "-_NSMachLaunch", 0, 85, 1 },
1697 { "-MachLaunch", 0, 85, 1 },
1698 { "-macosx", 0, 85, 0 },
1699 { "-NSHost", 0, 85, 1 },
1701 /* These have the same priority as ordinary file name args,
1702 so they are not reordered with respect to those. */
1703 { "-L", "--directory", 0, 1 },
1704 { "-directory", 0, 0, 1 },
1705 { "-l", "--load", 0, 1 },
1706 { "-load", 0, 0, 1 },
1707 /* This has no longname, because using --scriptload confuses sort_args,
1708 because then the --script long option seems to match twice; ie
1709 you can't have a long option which is a prefix of another long
1710 option. In any case, this is entirely an internal option. */
1711 { "-scriptload", NULL
, 0, 1 },
1712 { "-f", "--funcall", 0, 1 },
1713 { "-funcall", 0, 0, 1 },
1714 { "-eval", "--eval", 0, 1 },
1715 { "-execute", "--execute", 0, 1 },
1716 { "-find-file", "--find-file", 0, 1 },
1717 { "-visit", "--visit", 0, 1 },
1718 { "-file", "--file", 0, 1 },
1719 { "-insert", "--insert", 0, 1 },
1721 { "-NXOpen", 0, 0, 1 },
1722 { "-NXOpenTemp", 0, 0, 1 },
1723 { "-NSOpen", 0, 0, 1 },
1724 { "-NSOpenTemp", 0, 0, 1 },
1725 { "-GSFilePath", 0, 0, 1 },
1727 /* This should be processed after ordinary file name args and the like. */
1728 { "-kill", "--kill", -10, 0 },
1731 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1732 so that the highest priority ones come first.
1733 Do not change the order of elements of equal priority.
1734 If an option takes an argument, keep it and its argument together.
1736 If an option that takes no argument appears more
1737 than once, eliminate all but one copy of it. */
1740 sort_args (int argc
, char **argv
)
1742 char **new = xmalloc (argc
* sizeof *new);
1743 /* For each element of argv,
1744 the corresponding element of options is:
1745 0 for an option that takes no arguments,
1746 1 for an option that takes one argument, etc.
1747 -1 for an ordinary non-option argument. */
1748 int *options
= xnmalloc (argc
, sizeof *options
);
1749 int *priority
= xnmalloc (argc
, sizeof *priority
);
1751 int incoming_used
= 1;
1755 /* Categorize all the options,
1756 and figure out which argv elts are option arguments. */
1757 for (from
= 1; from
< argc
; from
++)
1761 if (argv
[from
][0] == '-')
1765 /* If we have found "--", don't consider
1766 any more arguments as options. */
1767 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1769 /* Leave the "--", and everything following it, at the end. */
1770 for (; from
< argc
; from
++)
1772 priority
[from
] = -100;
1778 /* Look for a match with a known old-fashioned option. */
1779 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1780 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1782 options
[from
] = standard_args
[i
].nargs
;
1783 priority
[from
] = standard_args
[i
].priority
;
1784 if (from
+ standard_args
[i
].nargs
>= argc
)
1785 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1786 from
+= standard_args
[i
].nargs
;
1790 /* Look for a match with a known long option.
1791 MATCH is -1 if no match so far, -2 if two or more matches so far,
1792 >= 0 (the table index of the match) if just one match so far. */
1793 if (argv
[from
][1] == '-')
1795 char const *equals
= strchr (argv
[from
], '=');
1797 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1801 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1802 if (standard_args
[i
].longname
1803 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1812 /* If we found exactly one match, use that. */
1815 options
[from
] = standard_args
[match
].nargs
;
1816 priority
[from
] = standard_args
[match
].priority
;
1817 /* If --OPTION=VALUE syntax is used,
1818 this option uses just one argv element. */
1821 if (from
+ options
[from
] >= argc
)
1822 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1823 from
+= options
[from
];
1825 /* FIXME When match < 0, shouldn't there be some error,
1826 or at least indication to the user that there was a
1833 /* Copy the arguments, in order of decreasing priority, to NEW. */
1835 while (incoming_used
< argc
)
1838 int best_priority
= -9999;
1840 /* Find the highest priority remaining option.
1841 If several have equal priority, take the first of them. */
1842 for (from
= 1; from
< argc
; from
++)
1844 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1846 best_priority
= priority
[from
];
1849 /* Skip option arguments--they are tied to the options. */
1850 if (options
[from
] > 0)
1851 from
+= options
[from
];
1857 /* Copy the highest priority remaining option, with its args, to NEW.
1858 Unless it is a duplicate of the previous one. */
1859 if (! (options
[best
] == 0
1860 && ! strcmp (new[to
- 1], argv
[best
])))
1862 new[to
++] = argv
[best
];
1863 for (i
= 0; i
< options
[best
]; i
++)
1864 new[to
++] = argv
[best
+ i
+ 1];
1867 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1869 /* Clear out this option in ARGV. */
1871 for (i
= 0; i
< options
[best
]; i
++)
1872 argv
[best
+ i
+ 1] = 0;
1875 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1879 memcpy (argv
, new, sizeof (char *) * argc
);
1886 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1887 doc
: /* Exit the Emacs job and kill it.
1888 If ARG is an integer, return ARG as the exit program code.
1889 If ARG is a string, stuff it as keyboard input.
1891 This function is called upon receipt of the signals SIGTERM
1892 or SIGHUP, and upon SIGINT in batch mode.
1894 The value of `kill-emacs-hook', if not void,
1895 is a list of functions (of no args),
1896 all of which are called before Emacs is actually killed. */
1897 attributes
: noreturn
)
1900 struct gcpro gcpro1
;
1908 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1910 waiting_for_input
= 0;
1911 run_hook (Qkill_emacs_hook
);
1914 #ifdef HAVE_X_WINDOWS
1915 /* Transfer any clipboards we own to the clipboard manager. */
1916 x_clipboard_manager_save_all ();
1919 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1922 ns_release_autorelease_pool (ns_pool
);
1925 /* If we have an auto-save list file,
1926 kill it because we are exiting Emacs deliberately (not crashing).
1927 Do it after shut_down_emacs, which does an auto-save. */
1928 if (STRINGP (Vauto_save_list_file_name
))
1930 Lisp_Object listfile
;
1931 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1932 unlink (SSDATA (listfile
));
1936 exit_code
= (XINT (arg
) < 0
1937 ? XINT (arg
) | INT_MIN
1938 : XINT (arg
) & INT_MAX
);
1940 exit_code
= EXIT_SUCCESS
;
1945 /* Perform an orderly shutdown of Emacs. Autosave any modified
1946 buffers, kill any child processes, clean up the terminal modes (if
1947 we're in the foreground), and other stuff like that. Don't perform
1948 any redisplay; this may be called when Emacs is shutting down in
1949 the background, or after its X connection has died.
1951 If SIG is a signal number, print a message for it.
1953 This is called by fatal signal handlers, X protocol error handlers,
1957 shut_down_emacs (int sig
, Lisp_Object stuff
)
1959 /* Prevent running of hooks from now on. */
1962 /* Don't update display from now on. */
1963 Vinhibit_redisplay
= Qt
;
1965 /* If we are controlling the terminal, reset terminal modes. */
1968 pid_t pgrp
= getpgrp ();
1969 pid_t tpgrp
= tcgetpgrp (0);
1970 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1972 reset_all_sys_modes ();
1973 if (sig
&& sig
!= SIGTERM
)
1975 static char const format
[] = "Fatal error %d: ";
1976 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1977 int buflen
= sprintf (buf
, format
, sig
);
1978 char const *sig_desc
= safe_strsignal (sig
);
1979 emacs_write (STDERR_FILENO
, buf
, buflen
);
1980 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1986 reset_all_sys_modes ();
1989 stuff_buffered_input (stuff
);
1991 inhibit_sentinels
= 1;
1992 kill_buffer_processes (Qnil
);
1993 Fdo_auto_save (Qt
, Qnil
);
1995 unlock_all_files ();
1997 /* There is a tendency for a SIGIO signal to arrive within exit,
1998 and cause a SIGHUP because the input descriptor is already closed. */
2002 /* Do this only if terminating normally, we want glyph matrices
2003 etc. in a core dump. */
2004 if (sig
== 0 || sig
== SIGTERM
)
2006 check_glyph_memory ();
2007 check_message_stack ();
2015 ns_term_shutdown (sig
);
2019 xml_cleanup_parser ();
2033 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2034 doc
: /* Dump current state of Emacs into executable file FILENAME.
2035 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2036 This is used in the file `loadup.el' when building Emacs.
2038 You must run Emacs in batch mode in order to dump it. */)
2039 (Lisp_Object filename
, Lisp_Object symfile
)
2043 ptrdiff_t count
= SPECPDL_INDEX ();
2047 if (! noninteractive
)
2048 error ("Dumping Emacs works only in batch mode");
2051 error ("Emacs can be dumped only once");
2055 /* Warn if the gap between BSS end and heap start is larger than this. */
2056 # define MAX_HEAP_BSS_DIFF (1024*1024)
2058 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2060 fprintf (stderr
, "**************************************************\n");
2061 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2062 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2064 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2065 fprintf (stderr
, "fail because of this. See the section about\n");
2066 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2067 fprintf (stderr
, "**************************************************\n");
2069 #endif /* GNU_LINUX */
2071 /* Bind `command-line-processed' to nil before dumping,
2072 so that the dumped Emacs will process its command line
2073 and set up to work with X windows if appropriate. */
2074 symbol
= intern ("command-line-processed");
2075 specbind (symbol
, Qnil
);
2077 CHECK_STRING (filename
);
2078 filename
= Fexpand_file_name (filename
, Qnil
);
2079 filename
= ENCODE_FILE (filename
);
2080 if (!NILP (symfile
))
2082 CHECK_STRING (symfile
);
2083 if (SCHARS (symfile
))
2085 symfile
= Fexpand_file_name (symfile
, Qnil
);
2086 symfile
= ENCODE_FILE (symfile
);
2091 Vpurify_flag
= Qnil
;
2094 /* Tell malloc where start of impure now is. */
2095 /* Also arrange for warnings when nearly out of space. */
2096 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
2098 /* On Windows, this was done before dumping, and that once suffices.
2099 Meanwhile, my_edata is not valid on Windows. */
2100 memory_warnings (my_edata
, malloc_warning
);
2101 #endif /* not WINDOWSNT */
2102 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
2103 #ifdef DOUG_LEA_MALLOC
2104 malloc_state_ptr
= malloc_get_state ();
2107 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2109 #ifdef DOUG_LEA_MALLOC
2110 free (malloc_state_ptr
);
2114 Vlibrary_cache
= Qnil
;
2116 #ifdef HAVE_WINDOW_SYSTEM
2117 reset_image_types ();
2122 return unbind_to (count
, Qnil
);
2125 #endif /* not CANNOT_DUMP */
2128 /* Recover from setlocale (LC_ALL, ""). */
2132 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2133 so that numbers are read and printed properly for Emacs Lisp. */
2134 setlocale (LC_NUMERIC
, "C");
2137 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2140 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2142 if (! EQ (*plocale
, desired_locale
))
2144 *plocale
= desired_locale
;
2145 setlocale (category
, (STRINGP (desired_locale
)
2146 ? SSDATA (desired_locale
)
2151 /* Set system time locale to match Vsystem_time_locale, if possible. */
2153 synchronize_system_time_locale (void)
2155 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2156 Vsystem_time_locale
);
2159 /* Set system messages locale to match Vsystem_messages_locale, if
2162 synchronize_system_messages_locale (void)
2165 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2166 Vsystem_messages_locale
);
2169 #endif /* HAVE_SETLOCALE */
2173 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2175 const char *path
, *p
;
2176 Lisp_Object lpath
, element
, tem
;
2177 /* Default is to use "." for empty path elements.
2178 But if argument EMPTY is true, use nil instead. */
2179 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2182 static const char *emacs_dir_env
= "%emacs_dir%/";
2183 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2184 const char *edir
= egetenv ("emacs_dir");
2185 char emacs_dir
[MAX_UTF8_PATH
];
2187 /* egetenv looks in process-environment, which holds the variables
2188 in their original system-locale encoding. We need emacs_dir to
2191 filename_from_ansi (edir
, emacs_dir
);
2194 /* It's okay to use getenv here, because this function is only used
2195 to initialize variables when Emacs starts up, and isn't called
2198 path
= getenv (evarname
);
2209 /* Ensure values from the environment use the proper directory separator. */
2215 char *path_utf8
, *q
, *d
;
2218 /* Convert each element of PATH to UTF-8. */
2219 p
= path_copy
= alloca (strlen (path
) + 1);
2220 strcpy (path_copy
, path
);
2221 d
= path_utf8
= alloca (4 * strlen (path
) + 1);
2224 q
= _mbschr (p
, SEPCHAR
);
2227 cnv_result
= filename_from_ansi (p
, d
);
2232 /* If conversion of this PATH elements fails, make sure
2233 destination pointer will stay put, thus effectively
2234 ignoring the offending element. */
2235 if (cnv_result
== 0)
2241 else if (cnv_result
!= 0 && d
> path_utf8
)
2242 d
[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2244 path_copy
= path_utf8
;
2246 path_copy
= alloca (strlen (path
) + 1);
2247 strcpy (path_copy
, path
);
2249 dostounix_filename (path_copy
);
2256 p
= strchr (path
, SEPCHAR
);
2258 p
= path
+ strlen (path
);
2259 element
= (p
- path
? make_unibyte_string (path
, p
- path
)
2261 if (! NILP (element
))
2264 /* Relative file names in the default path are interpreted as
2265 being relative to $emacs_dir. */
2266 if (edir
&& defaulted
2267 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2268 element
= Fexpand_file_name (Fsubstring
2270 make_number (emacs_dir_len
),
2272 build_unibyte_string (emacs_dir
));
2275 /* Add /: to the front of the name
2276 if it would otherwise be treated as magic. */
2277 tem
= Ffind_file_name_handler (element
, Qt
);
2279 /* However, if the handler says "I'm safe",
2280 don't bother adding /:. */
2284 prop
= Fget (tem
, intern ("safe-magic"));
2291 AUTO_STRING (slash_colon
, "/:");
2292 element
= concat2 (slash_colon
, element
);
2294 } /* !NILP (element) */
2296 lpath
= Fcons (element
, lpath
);
2302 return Fnreverse (lpath
);
2305 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2306 doc
: /* Return non-nil if the current emacs process is a daemon.
2307 If the daemon was given a name argument, return that name. */)
2312 return build_string (daemon_name
);
2319 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2320 doc
: /* Mark the Emacs daemon as being initialized.
2321 This finishes the daemonization process by doing the other half of detaching
2322 from the parent process and its tty file descriptors. */)
2329 error ("This function can only be called if emacs is run as a daemon");
2331 if (daemon_pipe
[1] < 0)
2332 error ("The daemon has already been initialized");
2334 if (NILP (Vafter_init_time
))
2335 error ("This function can only be called after loading the init files");
2337 /* Get rid of stdin, stdout and stderr. */
2338 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2340 err
|= dup2 (nfd
, 0) < 0;
2341 err
|= dup2 (nfd
, 1) < 0;
2342 err
|= dup2 (nfd
, 2) < 0;
2343 err
|= emacs_close (nfd
) != 0;
2345 /* Closing the pipe will notify the parent that it can exit.
2346 FIXME: In case some other process inherited the pipe, closing it here
2347 won't notify the parent because it's still open elsewhere, so we
2348 additionally send a byte, just to make sure the parent really exits.
2349 Instead, we should probably close the pipe in start-process and
2350 call-process to make sure the pipe is never inherited by
2352 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2353 err
|= emacs_close (daemon_pipe
[1]) != 0;
2354 /* Set it to an invalid value so we know we've already run this function. */
2355 daemon_pipe
[1] = -1;
2358 error ("I/O error during daemon initialization");
2363 syms_of_emacs (void)
2365 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2366 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2367 DEFSYM (Qkill_emacs
, "kill-emacs");
2368 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2371 defsubr (&Sdump_emacs
);
2374 defsubr (&Skill_emacs
);
2376 defsubr (&Sinvocation_name
);
2377 defsubr (&Sinvocation_directory
);
2378 defsubr (&Sdaemonp
);
2379 defsubr (&Sdaemon_initialized
);
2381 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2382 doc
: /* Args passed by shell to Emacs, as a list of strings.
2383 Many arguments are deleted from the list as they are processed. */);
2385 DEFVAR_LISP ("system-type", Vsystem_type
,
2386 doc
: /* The value is a symbol indicating the type of operating system you are using.
2388 `gnu' compiled for a GNU Hurd system.
2389 `gnu/linux' compiled for a GNU/Linux system.
2390 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2391 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2392 `ms-dos' compiled as an MS-DOS application.
2393 `windows-nt' compiled as a native W32 application.
2394 `cygwin' compiled using the Cygwin library.
2395 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2396 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2397 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2398 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2400 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2401 doc
: /* Value is string indicating configuration Emacs was built for.
2402 On MS-Windows, the value reflects the OS flavor and version on which
2403 Emacs is running. */);
2404 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2406 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2407 doc
: /* String containing the configuration options Emacs was built with. */);
2408 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2410 DEFVAR_LISP ("system-configuration-features", Vsystem_configuration_features
,
2411 doc
: /* String listing some of the main features this Emacs was compiled with.
2412 An element of the form \"FOO\" generally means that HAVE_FOO was
2413 defined during the build. */);
2414 Vsystem_configuration_features
= build_string (EMACS_CONFIG_FEATURES
);
2416 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2417 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2419 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2420 doc
: /* Hook run when `kill-emacs' is called.
2421 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2422 in other similar situations), functions placed on this hook should not
2423 expect to be able to interact with the user. To ask for confirmation,
2424 see `kill-emacs-query-functions' instead.
2426 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2427 `noninteractive' was non-nil. */);
2428 Vkill_emacs_hook
= Qnil
;
2430 DEFVAR_LISP ("path-separator", Vpath_separator
,
2431 doc
: /* String containing the character that separates directories in
2432 search paths, such as PATH and other similar environment variables. */);
2435 Vpath_separator
= make_string (&c
, 1);
2438 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2439 doc
: /* The program name that was used to run Emacs.
2440 Any directory names are omitted. */);
2442 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2443 doc
: /* The directory in which the Emacs executable was found, to run it.
2444 The value is nil if that directory's name is not known. */);
2446 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2447 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2448 In an installed Emacs, this is normally nil. It is non-nil if
2449 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2450 within the variable `invocation-directory' or its parent. For example,
2451 this is the case when running an uninstalled Emacs executable from its
2452 build directory. */);
2453 Vinstallation_directory
= Qnil
;
2455 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2456 doc
: /* System locale for messages. */);
2457 Vsystem_messages_locale
= Qnil
;
2459 DEFVAR_LISP ("previous-system-messages-locale",
2460 Vprevious_system_messages_locale
,
2461 doc
: /* Most recently used system locale for messages. */);
2462 Vprevious_system_messages_locale
= Qnil
;
2464 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2465 doc
: /* System locale for time. */);
2466 Vsystem_time_locale
= Qnil
;
2468 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2469 doc
: /* Most recently used system locale for time. */);
2470 Vprevious_system_time_locale
= Qnil
;
2472 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2473 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2474 Vbefore_init_time
= Qnil
;
2476 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2477 doc
: /* Value of `current-time' after loading the init files.
2478 This is nil during initialization. */);
2479 Vafter_init_time
= Qnil
;
2481 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2482 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2483 inhibit_x_resources
= 0;
2485 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2486 doc
: /* Short copyright string for this version of Emacs. */);
2487 Vemacs_copyright
= build_string (emacs_copyright
);
2489 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2490 doc
: /* Version numbers of this version of Emacs. */);
2491 Vemacs_version
= build_string (emacs_version
);
2493 DEFVAR_LISP ("report-emacs-bug-address", Vreport_emacs_bug_address
,
2494 doc
: /* Address of mailing list for GNU Emacs bugs. */);
2495 Vreport_emacs_bug_address
= build_string (emacs_bugreport
);
2497 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2498 doc
: /* Alist of dynamic libraries vs external files implementing them.
2499 Each element is a list (LIBRARY FILE...), where the car is a symbol
2500 representing a supported external library, and the rest are strings giving
2501 alternate filenames for that library.
2503 Emacs tries to load the library from the files in the order they appear on
2504 the list; if none is loaded, the running session of Emacs won't have access
2507 Note that image types `pbm' and `xbm' do not need entries in this variable
2508 because they do not depend on external libraries and are always available.
2510 Also note that this is not a generic facility for accessing external
2511 libraries; only those already known by Emacs will be loaded. */);
2512 Vdynamic_library_alist
= Qnil
;
2513 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2516 Vlibrary_cache
= Qnil
;
2517 staticpro (&Vlibrary_cache
);