1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2016 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
28 #include <sys/types.h>
32 #include <close-stream.h>
39 #include <sys/socket.h>
45 #if defined WINDOWSNT || defined HAVE_NTGUI
46 #include "w32select.h"
48 #include "w32common.h"
56 #include <binary-io.h>
59 #ifdef HAVE_WINDOW_SYSTEM
61 #endif /* HAVE_WINDOW_SYSTEM */
64 #include "intervals.h"
65 #include "character.h"
70 #include "blockinput.h"
71 #include "syssignal.h"
74 #include "termhooks.h"
79 #include "composite.h"
80 #include "dispextern.h"
83 #include "sysselect.h"
89 #if (defined PROFILING \
90 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
91 # include <sys/gmon.h>
92 extern void moncontrol (int mode
);
103 #ifdef HAVE_SETRLIMIT
104 #include <sys/time.h>
105 #include <sys/resource.h>
108 #ifdef HAVE_PERSONALITY_LINUX32
109 #include <sys/personality.h>
112 static const char emacs_version
[] = PACKAGE_VERSION
;
113 static const char emacs_copyright
[] = COPYRIGHT
;
114 static const char emacs_bugreport
[] = PACKAGE_BUGREPORT
;
116 /* Empty lisp strings. To avoid having to build any others. */
117 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
120 /* Cache for externally loaded libraries. */
121 Lisp_Object Vlibrary_cache
;
124 /* Set after Emacs has started up the first time.
125 Prevents reinitialization of the Lisp world and keymaps
126 on subsequent starts. */
129 /* Set to true if this instance of Emacs might dump. */
133 extern void unexec_init_emacs_zone (void);
136 extern void malloc_enable_thread (void);
138 /* If true, Emacs should not attempt to use a window-specific code,
139 but instead should use the virtual terminal under which it was started. */
140 bool inhibit_window_system
;
142 /* If true, a filter or a sentinel is running. Tested to save the match
143 data on the first attempt to change it inside asynchronous code. */
144 bool running_asynch_code
;
146 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
147 /* If true, -d was specified, meaning we're using some window system. */
151 /* An address near the bottom of the stack.
152 Tells GC how to save a copy of the stack. */
156 /* The gap between BSS end and heap start as far as we can tell. */
157 static uprintmax_t heap_bss_diff
;
160 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
163 On Cocoa, CoreFoundation lib fails in forked process:
164 http://developer.apple.com/ReleaseNotes/
165 CoreFoundation/CoreFoundation.html)
167 On Windows, a Cygwin fork child cannot access the USER subsystem.
169 We mark being in the exec'd process by a daemon name argument of
170 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
171 NAME is the original daemon name, if any. */
172 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
173 # define DAEMON_MUST_EXEC
176 /* True means running Emacs without interactive terminal. */
179 /* True means remove site-lisp directories from load-path. */
182 /* Name for the server started by the daemon.*/
183 static char *daemon_name
;
186 /* Pipe used to send exit notification to the daemon parent at
190 HANDLE w32_daemon_event
;
193 /* Save argv and argc. */
197 static void sort_args (int argc
, char **argv
);
198 static void syms_of_emacs (void);
200 /* C99 needs each string to be at most 4095 characters, and the usage
201 strings below are split to not overflow this limit. */
202 static char const *const usage_message
[] =
205 Run Emacs, the extensible, customizable, self-documenting real-time\n\
206 display editor. The recommended way to start Emacs for normal editing\n\
207 is with no options at all.\n\
209 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
210 read the main documentation for these command-line arguments.\n\
212 Initialization options:\n\
216 --batch do not do interactive display; implies -q\n\
217 --chdir DIR change to directory DIR\n\
218 --daemon start a server in the background\n\
219 --debug-init enable Emacs Lisp debugger for init file\n\
220 --display, -d DISPLAY use X server DISPLAY\n\
223 --no-desktop do not load a saved desktop\n\
224 --no-init-file, -q load neither ~/.emacs nor default.el\n\
225 --no-loadup, -nl do not load loadup.el into bare Emacs\n\
226 --no-site-file do not load site-start.el\n\
227 --no-x-resources do not load X resources\n\
228 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
229 --no-splash do not display a splash screen on startup\n\
230 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
233 --quick, -Q equivalent to:\n\
234 -q --no-site-file --no-site-lisp --no-splash\n\
236 --script FILE run FILE as an Emacs Lisp script\n\
237 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
238 --user, -u USER load ~USER/.emacs instead of your own\n\
244 FILE visit FILE using find-file\n\
245 +LINE go to line LINE in next FILE\n\
246 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
247 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
248 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
249 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
252 --file FILE visit FILE using find-file\n\
253 --find-file FILE visit FILE using find-file\n\
254 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
255 --insert FILE insert contents of FILE into current buffer\n\
256 --kill exit without asking for confirmation\n\
257 --load, -l FILE load Emacs Lisp FILE using the load function\n\
258 --visit FILE visit FILE using find-file\n\
264 --background-color, -bg COLOR window background color\n\
265 --basic-display, -D disable many display features;\n\
266 used for debugging Emacs\n\
267 --border-color, -bd COLOR main border color\n\
268 --border-width, -bw WIDTH width of main border\n\
271 --color, --color=MODE override color mode for character terminals;\n\
272 MODE defaults to `auto', and\n\
273 can also be `never', `always',\n\
274 or a mode name like `ansi8'\n\
275 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
276 --font, -fn FONT default font; must be fixed-width\n\
277 --foreground-color, -fg COLOR window foreground color\n\
280 --fullheight, -fh make the first frame high as the screen\n\
281 --fullscreen, -fs make the first frame fullscreen\n\
282 --fullwidth, -fw make the first frame wide as the screen\n\
283 --maximized, -mm make the first frame maximized\n\
284 --geometry, -g GEOMETRY window geometry\n\
287 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
288 --iconic start Emacs in iconified state\n\
289 --internal-border, -ib WIDTH width between text and main border\n\
290 --line-spacing, -lsp PIXELS additional space to put between lines\n\
291 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
292 --name NAME title for initial Emacs frame\n\
295 --no-blinking-cursor, -nbc disable blinking cursor\n\
296 --reverse-video, -r, -rv switch foreground and background\n\
297 --title, -T TITLE title for initial Emacs frame\n\
298 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
299 --xrm XRESOURCES set additional X resources\n\
300 --parent-id XID set parent window\n\
301 --help display this help and exit\n\
302 --version output version information and exit\n\
306 You can generally also specify long option names with a single -; for\n\
307 example, -batch as well as --batch. You can use any unambiguous\n\
308 abbreviation for a --option.\n\
310 Various environment variables and window system resources also affect\n\
311 the operation of Emacs. See the main documentation.\n\
313 Report bugs to " PACKAGE_BUGREPORT
". First, please see the Bugs\n\
314 section of the Emacs manual or the file BUGS.\n"
318 /* True if handling a fatal error already. */
319 bool fatal_error_in_progress
;
322 /* NS autrelease pool, for memory management. */
323 static void *ns_pool
;
328 setlocale (int cat
, char const *locale
)
334 /* True if the current system locale uses UTF-8 encoding. */
340 mbstate_t mbs
= { 0 };
341 return mbrtowc (&wc
, "\xc4\x80", 2, &mbs
) == 2 && wc
== 0x100;
348 /* Report a fatal error due to signal SIG, output a backtrace of at
349 most BACKTRACE_LIMIT lines, and exit. */
351 terminate_due_to_signal (int sig
, int backtrace_limit
)
353 signal (sig
, SIG_DFL
);
355 /* If fatal error occurs in code below, avoid infinite recursion. */
356 if (! fatal_error_in_progress
)
358 fatal_error_in_progress
= 1;
360 totally_unblock_input ();
361 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
362 Fkill_emacs (make_number (sig
));
364 shut_down_emacs (sig
, Qnil
);
365 emacs_backtrace (backtrace_limit
);
368 /* Signal the same code; this time it will really be fatal.
369 Since we're in a signal handler, the signal is blocked, so we
370 have to unblock it if we want to really receive it. */
374 sigemptyset (&unblocked
);
375 sigaddset (&unblocked
, sig
);
376 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
382 /* This shouldn't be executed, but it prevents a warning. */
386 /* Code for dealing with Lisp access to the Unix command line. */
389 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
392 Lisp_Object name
, dir
, handler
;
393 ptrdiff_t count
= SPECPDL_INDEX ();
394 Lisp_Object raw_name
;
395 AUTO_STRING (slash_colon
, "/:");
401 /* Must use argv[0] converted to UTF-8, as it begets many standard
402 file and directory names. */
404 char argv0
[MAX_UTF8_PATH
];
406 if (filename_from_ansi (argv
[0], argv0
) == 0)
407 raw_name
= build_unibyte_string (argv0
);
409 raw_name
= build_unibyte_string (argv
[0]);
412 raw_name
= build_unibyte_string (argv
[0]);
415 /* Add /: to the front of the name
416 if it would otherwise be treated as magic. */
417 handler
= Ffind_file_name_handler (raw_name
, Qt
);
418 if (! NILP (handler
))
419 raw_name
= concat2 (slash_colon
, raw_name
);
421 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
422 Vinvocation_directory
= Ffile_name_directory (raw_name
);
424 /* If we got no directory in argv[0], search PATH to find where
425 Emacs actually came from. */
426 if (NILP (Vinvocation_directory
))
429 int yes
= openp (Vexec_path
, Vinvocation_name
,
430 Vexec_suffixes
, &found
, make_number (X_OK
), false);
433 /* Add /: to the front of the name
434 if it would otherwise be treated as magic. */
435 handler
= Ffind_file_name_handler (found
, Qt
);
436 if (! NILP (handler
))
437 found
= concat2 (slash_colon
, found
);
438 Vinvocation_directory
= Ffile_name_directory (found
);
442 if (!NILP (Vinvocation_directory
)
443 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
444 /* Emacs was started with relative path, like ./emacs.
448 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
450 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
453 Vinstallation_directory
= Qnil
;
455 if (!NILP (Vinvocation_directory
))
457 dir
= Vinvocation_directory
;
459 /* If we are running from the build directory, set DIR to the
460 src subdirectory of the Emacs tree, like on Posix
462 if (SBYTES (dir
) > sizeof ("/i386/") - 1
463 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
465 dir
= Fexpand_file_name (build_string ("../.."), dir
);
466 #else /* !WINDOWSNT */
468 name
= Fexpand_file_name (Vinvocation_name
, dir
);
471 Lisp_Object tem
, lib_src_exists
;
472 Lisp_Object etc_exists
, info_exists
;
474 /* See if dir contains subdirs for use by Emacs.
475 Check for the ones that would exist in a build directory,
476 not including lisp and info. */
477 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
478 lib_src_exists
= Ffile_exists_p (tem
);
481 /* MSDOS installations frequently remove lib-src, but we still
482 must set installation-directory, or else info won't find
483 its files (it uses the value of installation-directory). */
484 tem
= Fexpand_file_name (build_string ("info"), dir
);
485 info_exists
= Ffile_exists_p (tem
);
490 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
492 tem
= Fexpand_file_name (build_string ("etc"), dir
);
493 etc_exists
= Ffile_exists_p (tem
);
494 if (!NILP (etc_exists
))
496 Vinstallation_directory
497 = Ffile_name_as_directory (dir
);
502 /* See if dir's parent contains those subdirs. */
503 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
504 lib_src_exists
= Ffile_exists_p (tem
);
508 /* See the MSDOS commentary above. */
509 tem
= Fexpand_file_name (build_string ("../info"), dir
);
510 info_exists
= Ffile_exists_p (tem
);
515 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
517 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
518 etc_exists
= Ffile_exists_p (tem
);
519 if (!NILP (etc_exists
))
521 tem
= Fexpand_file_name (build_string (".."), dir
);
522 Vinstallation_directory
523 = Ffile_name_as_directory (tem
);
528 /* If the Emacs executable is actually a link,
529 next try the dir that the link points into. */
530 tem
= Ffile_symlink_p (name
);
533 name
= Fexpand_file_name (tem
, dir
);
534 dir
= Ffile_name_directory (name
);
541 Vcommand_line_args
= Qnil
;
543 for (i
= argc
- 1; i
>= 0; i
--)
545 if (i
== 0 || i
> skip_args
)
546 /* For the moment, we keep arguments as is in unibyte strings.
547 They are decoded in the function command-line after we know
548 locale-coding-system. */
550 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
553 unbind_to (count
, Qnil
);
556 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
557 doc
: /* Return the program name that was used to run Emacs.
558 Any directory names are omitted. */)
561 return Fcopy_sequence (Vinvocation_name
);
564 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
566 doc
: /* Return the directory name in which the Emacs executable was located. */)
569 return Fcopy_sequence (Vinvocation_directory
);
573 /* Test whether the next argument in ARGV matches SSTR or a prefix of
574 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
575 (the argument is supposed to have a value) store in *VALPTR either
576 the next argument or the portion of this one after the equal sign.
577 ARGV is read starting at position *SKIPPTR; this index is advanced
578 by the number of arguments used.
580 Too bad we can't just use getopt for all of this, but we don't have
581 enough information to do it right. */
584 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
585 int minlen
, char **valptr
, int *skipptr
)
591 /* Don't access argv[argc]; give up in advance. */
592 if (argc
<= *skipptr
+ 1)
595 arg
= argv
[*skipptr
+1];
598 if (strcmp (arg
, sstr
) == 0)
602 *valptr
= argv
[*skipptr
+2];
609 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
610 ? p
- arg
: strlen (arg
));
611 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
613 else if (valptr
== NULL
)
624 else if (argv
[*skipptr
+2] != NULL
)
626 *valptr
= argv
[*skipptr
+2];
636 /* Close standard output and standard error, reporting any write
637 errors as best we can. This is intended for use with atexit. */
639 close_output_streams (void)
641 if (close_stream (stdout
) != 0)
643 emacs_perror ("Write error to standard output");
644 _exit (EXIT_FAILURE
);
647 if (close_stream (stderr
) != 0)
648 _exit (EXIT_FAILURE
);
653 main (int argc
, char **argv
)
656 char stack_bottom_variable
;
657 bool do_initial_setlocale
;
660 #ifdef HAVE_SETRLIMIT
666 #ifdef DAEMON_MUST_EXEC
671 /* If we use --chdir, this records the original directory. */
672 char *original_pwd
= 0;
677 might_dump
= !initialized
;
683 char *heap_start
= my_heap_start ();
684 heap_bss_diff
= heap_start
- max (my_endbss
, my_endbss_static
);
688 #if defined WINDOWSNT || defined HAVE_NTGUI
689 /* Set global variables used to detect Windows version. Do this as
690 early as possible. (unexw32.c calls this function as well, but
691 the additional call here is harmless.) */
692 cache_system_info ();
694 /* On Windows 9X, we have to load UNICOWS.DLL as early as possible,
695 to have non-stub implementations of APIs we need to convert file
696 names between UTF-8 and the system's ANSI codepage. */
697 maybe_load_unicows_dll ();
699 /* This has to be done before module_init is called below, so that
700 the latter could use the thread ID of the main thread. */
701 w32_init_main_thread ();
704 #ifdef RUN_TIME_REMAP
706 run_time_remap (argv
[0]);
709 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
712 unexec_init_emacs_zone ();
715 atexit (close_output_streams
);
721 sort_args (argc
, argv
);
723 while (argv
[argc
]) argc
++;
725 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
727 const char *version
, *copyright
;
730 Lisp_Object tem
, tem2
;
731 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
732 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
735 fprintf (stderr
, "Invalid value of 'emacs-version'\n");
740 fprintf (stderr
, "Invalid value of 'emacs-copyright'\n");
745 version
= SSDATA (tem
);
746 copyright
= SSDATA (tem2
);
751 version
= emacs_version
;
752 copyright
= emacs_copyright
;
754 printf ("%s %s\n", PACKAGE_NAME
, version
);
755 printf ("%s\n", copyright
);
756 printf ("%s comes with ABSOLUTELY NO WARRANTY.\n", PACKAGE_NAME
);
757 printf ("You may redistribute copies of %s\n", PACKAGE_NAME
);
758 printf ("under the terms of the GNU General Public License.\n");
759 printf ("For more information about these matters, ");
760 printf ("see the file named COPYING.\n");
764 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
767 /* argv[] array is kept in its original ANSI codepage encoding,
768 we need to convert to UTF-8, for chdir to work. */
769 char newdir
[MAX_UTF8_PATH
];
771 filename_from_ansi (ch_to_dir
, newdir
);
774 original_pwd
= get_current_dir_name ();
775 if (chdir (ch_to_dir
) != 0)
777 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
778 argv
[0], ch_to_dir
, strerror (errno
));
783 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
784 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
786 #ifdef HAVE_PERSONALITY_LINUX32
787 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
789 /* Set this so we only do this once. */
790 xputenv ("EMACS_HEAP_EXEC=true");
792 /* A flag to turn off address randomization which is introduced
793 in linux kernel shipped with fedora core 4 */
794 #define ADD_NO_RANDOMIZE 0x0040000
795 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
796 #undef ADD_NO_RANDOMIZE
798 execvp (argv
[0], argv
);
800 /* If the exec fails, try to dump anyway. */
801 emacs_perror (argv
[0]);
803 #endif /* HAVE_PERSONALITY_LINUX32 */
805 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK) && !defined (CYGWIN)
806 /* Extend the stack space available. Don't do that if dumping,
807 since some systems (e.g. DJGPP) might define a smaller stack
808 limit at that time. And it's not needed on Cygwin, since emacs
809 is built with an 8MB stack. Moreover, the setrlimit call can
810 cause problems on Cygwin
811 (https://www.cygwin.com/ml/cygwin/2015-07/msg00096.html). */
814 && (!noninteractive
|| initialized
)
816 && !getrlimit (RLIMIT_STACK
, &rlim
))
819 /* Approximate the amount regex.c needs per unit of re_max_failures. */
820 int ratio
= 20 * sizeof (char *);
821 /* Then add 33% to cover the size of the smaller stacks that regex.c
822 successively allocates and discards, on its way to the maximum. */
824 /* Add in some extra to cover
825 what we're likely to use for other reasons. */
826 newlim
= re_max_failures
* ratio
+ 200000;
828 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
829 stack allocation routine for new process that the allocation
830 fails if stack limit is not on page boundary. So, round up the
831 new limit to page boundary. */
832 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
834 if (newlim
> rlim
.rlim_max
)
836 newlim
= rlim
.rlim_max
;
837 /* Don't let regex.c overflow the stack we have. */
838 re_max_failures
= (newlim
- 200000) / ratio
;
840 if (rlim
.rlim_cur
< newlim
)
841 rlim
.rlim_cur
= newlim
;
843 setrlimit (RLIMIT_STACK
, &rlim
);
845 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK and not CYGWIN */
847 /* Record (approximately) where the stack begins. */
848 stack_bottom
= &stack_bottom_variable
;
852 emacs_backtrace (-1);
854 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
855 /* Arrange to get warning messages as memory fills up. */
856 memory_warnings (0, malloc_warning
);
858 /* Call malloc at least once, to run malloc_initialize_hook.
859 Also call realloc and free for consistency. */
860 free (realloc (malloc (4), 4));
862 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
865 SET_BINARY (fileno (stdin
));
867 SET_BINARY (fileno (stdout
));
870 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
871 The build procedure uses this while dumping, to ensure that the
872 dumped Emacs does not have its system locale tables initialized,
873 as that might cause screwups when the dumped Emacs starts up. */
875 char *lc_all
= getenv ("LC_ALL");
876 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
879 /* Set locale now, so that initial error messages are localized properly.
880 fixup_locale must wait until later, since it builds strings. */
881 if (do_initial_setlocale
)
882 setlocale (LC_ALL
, "");
883 text_quoting_flag
= using_utf8 ();
885 inhibit_window_system
= 0;
887 /* Handle the -t switch, which specifies filename to use as terminal. */
891 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
896 result
= emacs_open (term
, O_RDWR
, 0);
897 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
899 char *errstring
= strerror (errno
);
900 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
905 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
908 fprintf (stderr
, "Using %s\n", term
);
909 #ifdef HAVE_WINDOW_SYSTEM
910 inhibit_window_system
= 1; /* -t => -nw */
917 /* Command line option --no-windows is deprecated and thus not mentioned
918 in the manual and usage information. */
919 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
920 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
921 inhibit_window_system
= 1;
923 /* Handle the -batch switch, which means don't do interactive display. */
925 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
928 Vundo_outer_limit
= Qnil
;
930 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
932 noninteractive
= 1; /* Set batch mode. */
933 /* Convert --script to -scriptload, un-skip it, and sort again
934 so that it will be handled in proper sequence. */
935 /* FIXME broken for --script=FILE - is that supposed to work? */
936 argv
[skip_args
- 1] = (char *) "-scriptload";
938 sort_args (argc
, argv
);
941 /* Handle the --help option, which gives a usage message. */
942 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
945 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
946 for (i
= 0; i
< ARRAYELTS (usage_message
); i
++)
947 fputs (usage_message
[i
], stdout
);
952 /* Make sure IS_DAEMON starts up as false. */
955 w32_daemon_event
= NULL
;
958 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
959 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
964 /* Start as a daemon: fork a new child process which will run the
965 rest of the initialization code, then exit.
967 Detaching a daemon requires the following steps:
971 - close the tty file-descriptors
973 We only want to do the last 2 steps once the daemon is ready to
974 serve requests, i.e. after loading .emacs (initialization).
975 OTOH initialization may start subprocesses (e.g. ispell) and these
976 should be run from the proper process (the one that will end up
977 running as daemon) and with the proper "session id" in order for
978 them to keep working after detaching, so fork and setsid need to be
979 performed before initialization.
981 We want to avoid exiting before the server socket is ready, so
982 use a pipe for synchronization. The parent waits for the child
983 to close its end of the pipe (using `daemon-initialized')
985 if (emacs_pipe (daemon_pipe
) != 0)
987 fprintf (stderr
, "Cannot pipe!\n");
991 #ifndef DAEMON_MUST_EXEC
993 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
994 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
995 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
998 #else /* DAEMON_MUST_EXEC */
999 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1000 f
= fork (); /* in orig */
1002 f
= 0; /* in exec'd */
1003 #endif /* !DAEMON_MUST_EXEC */
1009 /* Close unused writing end of the pipe. */
1010 emacs_close (daemon_pipe
[1]);
1012 /* Just wait for the child to close its end of the pipe. */
1015 retval
= read (daemon_pipe
[0], &buf
, 1);
1017 while (retval
== -1 && errno
== EINTR
);
1021 fprintf (stderr
, "Error reading status from child\n");
1024 else if (retval
== 0)
1026 fprintf (stderr
, "Error: server did not start correctly\n");
1030 emacs_close (daemon_pipe
[0]);
1035 emacs_perror ("fork");
1036 exit (EXIT_CANCELED
);
1039 #ifdef DAEMON_MUST_EXEC
1041 /* In orig process, forked as child, OR in exec'd. */
1042 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1043 { /* In orig, child: now exec w/special daemon name. */
1046 snprintf (fdStr
, sizeof fdStr
,
1047 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1048 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1050 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1052 fprintf (stderr
, "daemon: child name too long\n");
1053 exit (EXIT_CANNOT_INVOKE
);
1056 argv
[skip_args
] = fdStr
;
1058 fcntl (daemon_pipe
[0], F_SETFD
, 0);
1059 fcntl (daemon_pipe
[1], F_SETFD
, 0);
1060 execvp (argv
[0], argv
);
1061 emacs_perror (argv
[0]);
1062 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1065 /* In exec'd: parse special dname into pipe and name info. */
1066 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1067 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1069 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1070 exit (EXIT_CANNOT_INVOKE
);
1072 dname_arg2
[0] = '\0';
1073 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1075 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1076 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1078 #endif /* DAEMON_MUST_EXEC */
1080 /* Close unused reading end of the pipe. */
1081 emacs_close (daemon_pipe
[0]);
1084 #elif defined(WINDOWSNT)
1085 /* Indicate that we want daemon mode. */
1086 w32_daemon_event
= CreateEvent (NULL
, TRUE
, FALSE
, W32_DAEMON_EVENT
);
1087 if (w32_daemon_event
== NULL
)
1089 fprintf (stderr
, "Couldn't create MS-Windows event for daemon: %s\n",
1094 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1098 daemon_name
= xstrdup (dname_arg
);
1101 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC \
1102 && !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC
1103 # ifndef CANNOT_DUMP
1104 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1105 that causes an infinite recursive loop with FreeBSD. See
1106 Bug#14569. The part of this bug involving Cygwin is no longer
1107 relevant, now that Cygwin defines HYBRID_MALLOC. */
1108 if (!noninteractive
|| initialized
)
1110 malloc_enable_thread ();
1113 init_signals (dumping
);
1115 noninteractive1
= noninteractive
;
1117 /* Perform basic initializations (not merely interning symbols). */
1124 init_charset_once ();
1125 init_coding_once ();
1126 init_syntax_once (); /* Create standard syntax table. */
1127 init_category_once (); /* Create standard category table. */
1128 init_casetab_once (); /* Must be done before init_buffer_once. */
1129 init_buffer_once (); /* Create buffer table and some buffers. */
1130 init_minibuf_once (); /* Create list of minibuffers. */
1131 /* Must precede init_window_once. */
1133 /* Call syms_of_xfaces before init_window_once because that
1134 function creates Vterminal_frame. Termcap frames now use
1135 faces, and the face implementation uses some symbols as
1138 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1139 be better to arrange things not to have this dependency. */
1141 /* Call syms_of_keyboard before init_window_once because
1142 keyboard sets up symbols that include some face names that
1143 the X support will want to use. This can happen when
1144 CANNOT_DUMP is defined. */
1145 syms_of_keyboard ();
1147 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1149 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1151 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1153 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1155 /* Before syms_of_coding because it initializes Qcharsetp. */
1157 /* Before init_window_once, because it sets up the
1158 Vcoding_system_hash_table. */
1159 syms_of_coding (); /* This should be after syms_of_fileio. */
1161 init_window_once (); /* Init the window system. */
1162 #ifdef HAVE_WINDOW_SYSTEM
1163 init_fringe_once (); /* Swap bitmaps if necessary. */
1164 #endif /* HAVE_WINDOW_SYSTEM */
1169 if (do_initial_setlocale
)
1172 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1173 Vsystem_time_locale
= Vprevious_system_time_locale
;
1178 running_asynch_code
= 0;
1182 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1185 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1188 ns_pool
= ns_alloc_autorelease_pool ();
1189 #ifdef NS_IMPL_GNUSTEP
1190 /* GNUstep stupidly resets our locale settings after we made them. */
1194 if (!noninteractive
)
1196 #ifdef NS_IMPL_COCOA
1197 /* Started from GUI? */
1198 /* FIXME: Do the right thing if getenv returns NULL, or if
1200 if (! inhibit_window_system
&& ! isatty (0) && ! ch_to_dir
)
1201 chdir (getenv ("HOME"));
1202 if (skip_args
< argc
)
1204 if (!strncmp (argv
[skip_args
], "-psn", 4))
1207 if (! ch_to_dir
) chdir (getenv ("HOME"));
1209 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1212 if (! ch_to_dir
) chdir (getenv ("HOME"));
1217 #endif /* HAVE_NS */
1219 #ifdef HAVE_X_WINDOWS
1220 /* Stupid kludge to catch command-line display spec. We can't
1221 handle this argument entirely in window system dependent code
1222 because we don't even know which window system dependent code
1223 to run until we've recognized this argument. */
1225 char *displayname
= 0;
1226 int count_before
= skip_args
;
1228 /* Skip any number of -d options, but only use the last one. */
1231 int count_before_this
= skip_args
;
1233 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1235 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1240 count_before
= count_before_this
;
1243 /* If we have the form --display=NAME,
1244 convert it into -d name.
1245 This requires inserting a new element into argv. */
1246 if (displayname
&& count_before
< skip_args
)
1248 if (skip_args
== count_before
+ 1)
1250 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1251 (argc
- (count_before
+ 2)) * sizeof *argv
);
1252 argv
[count_before
+ 2] = displayname
;
1255 argv
[count_before
+ 1] = (char *) "-d";
1260 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1261 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1265 /* Don't actually discard this arg. */
1266 skip_args
= count_before
;
1268 #else /* !HAVE_X_WINDOWS */
1271 int count_before
= skip_args
;
1273 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1274 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1277 skip_args
= count_before
;
1281 /* argmatch must not be used after here,
1282 except when building temacs
1283 because the -d argument has not been skipped in skip_args. */
1286 /* Call early 'cause init_environment needs it. */
1288 /* Set defaults for several environment variables. */
1290 init_environment (argc
, argv
, skip_args
);
1296 globals_of_kqueue ();
1299 #ifdef HAVE_GFILENOTIFY
1300 globals_of_gfilenotify ();
1305 #ifdef HAVE_W32NOTIFY
1306 globals_of_w32notify ();
1308 /* Initialize environment from registry settings. */
1309 init_environment (argv
);
1310 init_ntproc (dumping
); /* must precede init_editfns. */
1313 /* Initialize and GC-protect Vinitial_environment and
1314 Vprocess_environment before set_initial_environment fills them
1317 syms_of_callproc ();
1318 /* egetenv is a pretty low-level facility, which may get called in
1319 many circumstances; it seems flimsy to put off initializing it
1320 until calling init_callproc. Do not do it when dumping. */
1322 set_initial_environment ();
1324 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1325 if this is not done. Do it after set_global_environment so that we
1326 don't pollute Vglobal_environment. */
1327 /* Setting LANG here will defeat the startup locale processing... */
1332 /* Init buffer storage and default directory of main buffer. */
1333 init_buffer (initialized
);
1335 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1337 /* Must precede init_lread. */
1338 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1342 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1343 Lisp_Object old_log_max
;
1344 old_log_max
= Vmessage_log_max
;
1345 XSETFASTINT (Vmessage_log_max
, 0);
1346 message_dolog ("", 0, 1, 0);
1347 Vmessage_log_max
= old_log_max
;
1350 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1354 /* Check to see if Emacs has been installed correctly. */
1355 check_windows_init_file ();
1358 /* Intern the names of all standard functions and variables;
1359 define standard keys. */
1363 /* The basic levels of Lisp must come first. Note that
1364 syms_of_data and some others have already been called. */
1369 syms_of_floatfns ();
1372 syms_of_bytecode ();
1374 syms_of_casefiddle ();
1376 syms_of_category ();
1378 syms_of_character ();
1385 syms_of_filelock ();
1388 /* syms_of_keymap (); */
1396 syms_of_terminal ();
1407 syms_of_textprop ();
1408 syms_of_composite ();
1411 #endif /* WINDOWSNT */
1418 #ifdef HAVE_WINDOW_SYSTEM
1421 #endif /* HAVE_WINDOW_SYSTEM */
1422 #ifdef HAVE_X_WINDOWS
1428 syms_of_xsettings ();
1435 #endif /* HAVE_X_WINDOWS */
1442 syms_of_decompress ();
1452 #endif /* HAVE_NTGUI */
1454 #if defined WINDOWSNT || defined HAVE_NTGUI
1455 syms_of_w32select ();
1462 syms_of_win16select ();
1469 syms_of_nsselect ();
1471 #endif /* HAVE_NS */
1477 #endif /* HAVE_INOTIFY */
1481 #endif /* HAVE_KQUEUE */
1483 #ifdef HAVE_GFILENOTIFY
1484 syms_of_gfilenotify ();
1485 #endif /* HAVE_GFILENOTIFY */
1488 syms_of_dbusbind ();
1489 #endif /* HAVE_DBUS */
1493 #ifdef HAVE_W32NOTIFY
1494 syms_of_w32notify ();
1495 #endif /* HAVE_W32NOTIFY */
1496 #endif /* WINDOWSNT */
1498 syms_of_profiler ();
1500 keys_of_casefiddle ();
1503 keys_of_keyboard ();
1509 /* Initialization that must be done even if the global variable
1510 initialized is non zero. */
1512 globals_of_w32font ();
1513 globals_of_w32fns ();
1514 globals_of_w32menu ();
1515 #endif /* HAVE_NTGUI */
1517 #if defined WINDOWSNT || defined HAVE_NTGUI
1518 globals_of_w32select ();
1524 /* This calls putenv and so must precede init_process_emacs. Also,
1525 it sets Voperating_system_release, which init_process_emacs uses. */
1526 init_editfns (dumping
);
1528 /* These two call putenv. */
1536 /* This can create a thread that may call getenv, so it must follow
1537 all calls to putenv and setenv. Also, this sets up
1538 add_keyboard_wait_descriptor, which init_display uses. */
1539 init_process_emacs ();
1541 init_keyboard (); /* This too must precede init_sys_modes. */
1542 if (!noninteractive
)
1543 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1546 init_crit (); /* w32notify.c needs this in batch mode. */
1547 #endif /* HAVE_W32NOTIFY */
1549 #ifdef HAVE_WINDOW_SYSTEM
1551 #endif /* HAVE_WINDOW_SYSTEM */
1559 /* Handle -l loadup, args passed by Makefile. */
1560 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1563 char file_utf8
[MAX_UTF8_PATH
];
1565 if (filename_from_ansi (file
, file_utf8
) == 0)
1568 Vtop_level
= list2 (Qload
, build_unibyte_string (file
));
1570 /* Unless next switch is -nl, load "loadup.el" first thing. */
1572 Vtop_level
= list2 (Qload
, build_string ("loadup.el"));
1575 /* Set up for profiling. This is known to work on FreeBSD,
1576 GNU/Linux and MinGW. It might work on some other systems too.
1577 Give it a try and tell us if it works on your system. To compile
1578 for profiling, use the configure option --enable-profiling. */
1579 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1584 extern unsigned char etext
asm ("etext");
1590 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1599 /* Enter editor command loop. This never returns. */
1605 /* Sort the args so we can find the most important ones
1606 at the beginning of argv. */
1608 /* First, here's a table of all the standard options. */
1610 struct standard_args
1613 const char *longname
;
1618 static const struct standard_args standard_args
[] =
1620 { "-version", "--version", 150, 0 },
1621 { "-chdir", "--chdir", 130, 1 },
1622 { "-t", "--terminal", 120, 1 },
1623 { "-nw", "--no-window-system", 110, 0 },
1624 { "-nw", "--no-windows", 110, 0 },
1625 { "-batch", "--batch", 100, 0 },
1626 { "-script", "--script", 100, 1 },
1627 { "-daemon", "--daemon", 99, 0 },
1628 { "-help", "--help", 90, 0 },
1629 { "-nl", "--no-loadup", 70, 0 },
1630 { "-nsl", "--no-site-lisp", 65, 0 },
1631 /* -d must come last before the options handled in startup.el. */
1632 { "-d", "--display", 60, 1 },
1633 { "-display", 0, 60, 1 },
1634 /* Now for the options handled in `command-line' (startup.el). */
1635 /* (Note that to imply -nsl, -Q is partially handled here.) */
1636 { "-Q", "--quick", 55, 0 },
1637 { "-quick", 0, 55, 0 },
1638 { "-q", "--no-init-file", 50, 0 },
1639 { "-no-init-file", 0, 50, 0 },
1640 { "-no-x-resources", "--no-x-resources", 40, 0 },
1641 { "-no-site-file", "--no-site-file", 40, 0 },
1642 { "-u", "--user", 30, 1 },
1643 { "-user", 0, 30, 1 },
1644 { "-debug-init", "--debug-init", 20, 0 },
1645 { "-iconic", "--iconic", 15, 0 },
1646 { "-D", "--basic-display", 12, 0},
1647 { "-basic-display", 0, 12, 0},
1648 { "-nbc", "--no-blinking-cursor", 12, 0 },
1649 /* Now for the options handled in `command-line-1' (startup.el). */
1650 { "-nbi", "--no-bitmap-icon", 10, 0 },
1651 { "-bg", "--background-color", 10, 1 },
1652 { "-background", 0, 10, 1 },
1653 { "-fg", "--foreground-color", 10, 1 },
1654 { "-foreground", 0, 10, 1 },
1655 { "-bd", "--border-color", 10, 1 },
1656 { "-bw", "--border-width", 10, 1 },
1657 { "-ib", "--internal-border", 10, 1 },
1658 { "-ms", "--mouse-color", 10, 1 },
1659 { "-cr", "--cursor-color", 10, 1 },
1660 { "-fn", "--font", 10, 1 },
1661 { "-font", 0, 10, 1 },
1662 { "-fs", "--fullscreen", 10, 0 },
1663 { "-fw", "--fullwidth", 10, 0 },
1664 { "-fh", "--fullheight", 10, 0 },
1665 { "-mm", "--maximized", 10, 0 },
1666 { "-g", "--geometry", 10, 1 },
1667 { "-geometry", 0, 10, 1 },
1668 { "-T", "--title", 10, 1 },
1669 { "-title", 0, 10, 1 },
1670 { "-name", "--name", 10, 1 },
1671 { "-xrm", "--xrm", 10, 1 },
1672 { "-parent-id", "--parent-id", 10, 1 },
1673 { "-r", "--reverse-video", 5, 0 },
1675 { "-reverse", 0, 5, 0 },
1676 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1677 { "-vb", "--vertical-scroll-bars", 5, 0 },
1678 { "-color", "--color", 5, 0},
1679 { "-no-splash", "--no-splash", 3, 0 },
1680 { "-no-desktop", "--no-desktop", 3, 0 },
1682 { "-NSAutoLaunch", 0, 5, 1 },
1683 { "-NXAutoLaunch", 0, 5, 1 },
1684 { "-_NSMachLaunch", 0, 85, 1 },
1685 { "-MachLaunch", 0, 85, 1 },
1686 { "-macosx", 0, 85, 0 },
1687 { "-NSHost", 0, 85, 1 },
1689 /* These have the same priority as ordinary file name args,
1690 so they are not reordered with respect to those. */
1691 { "-L", "--directory", 0, 1 },
1692 { "-directory", 0, 0, 1 },
1693 { "-l", "--load", 0, 1 },
1694 { "-load", 0, 0, 1 },
1695 /* This has no longname, because using --scriptload confuses sort_args,
1696 because then the --script long option seems to match twice; ie
1697 you can't have a long option which is a prefix of another long
1698 option. In any case, this is entirely an internal option. */
1699 { "-scriptload", NULL
, 0, 1 },
1700 { "-f", "--funcall", 0, 1 },
1701 { "-funcall", 0, 0, 1 },
1702 { "-eval", "--eval", 0, 1 },
1703 { "-execute", "--execute", 0, 1 },
1704 { "-find-file", "--find-file", 0, 1 },
1705 { "-visit", "--visit", 0, 1 },
1706 { "-file", "--file", 0, 1 },
1707 { "-insert", "--insert", 0, 1 },
1709 { "-NXOpen", 0, 0, 1 },
1710 { "-NXOpenTemp", 0, 0, 1 },
1711 { "-NSOpen", 0, 0, 1 },
1712 { "-NSOpenTemp", 0, 0, 1 },
1713 { "-GSFilePath", 0, 0, 1 },
1715 /* This should be processed after ordinary file name args and the like. */
1716 { "-kill", "--kill", -10, 0 },
1719 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1720 so that the highest priority ones come first.
1721 Do not change the order of elements of equal priority.
1722 If an option takes an argument, keep it and its argument together.
1724 If an option that takes no argument appears more
1725 than once, eliminate all but one copy of it. */
1728 sort_args (int argc
, char **argv
)
1730 char **new = xmalloc (argc
* sizeof *new);
1731 /* For each element of argv,
1732 the corresponding element of options is:
1733 0 for an option that takes no arguments,
1734 1 for an option that takes one argument, etc.
1735 -1 for an ordinary non-option argument. */
1736 int *options
= xnmalloc (argc
, sizeof *options
);
1737 int *priority
= xnmalloc (argc
, sizeof *priority
);
1739 int incoming_used
= 1;
1743 /* Categorize all the options,
1744 and figure out which argv elts are option arguments. */
1745 for (from
= 1; from
< argc
; from
++)
1749 if (argv
[from
][0] == '-')
1753 /* If we have found "--", don't consider
1754 any more arguments as options. */
1755 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1757 /* Leave the "--", and everything following it, at the end. */
1758 for (; from
< argc
; from
++)
1760 priority
[from
] = -100;
1766 /* Look for a match with a known old-fashioned option. */
1767 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1768 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1770 options
[from
] = standard_args
[i
].nargs
;
1771 priority
[from
] = standard_args
[i
].priority
;
1772 if (from
+ standard_args
[i
].nargs
>= argc
)
1773 fatal ("Option '%s' requires an argument\n", argv
[from
]);
1774 from
+= standard_args
[i
].nargs
;
1778 /* Look for a match with a known long option.
1779 MATCH is -1 if no match so far, -2 if two or more matches so far,
1780 >= 0 (the table index of the match) if just one match so far. */
1781 if (argv
[from
][1] == '-')
1783 char const *equals
= strchr (argv
[from
], '=');
1785 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1789 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1790 if (standard_args
[i
].longname
1791 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1800 /* If we found exactly one match, use that. */
1803 options
[from
] = standard_args
[match
].nargs
;
1804 priority
[from
] = standard_args
[match
].priority
;
1805 /* If --OPTION=VALUE syntax is used,
1806 this option uses just one argv element. */
1809 if (from
+ options
[from
] >= argc
)
1810 fatal ("Option '%s' requires an argument\n", argv
[from
]);
1811 from
+= options
[from
];
1813 /* FIXME When match < 0, shouldn't there be some error,
1814 or at least indication to the user that there was a
1821 /* Copy the arguments, in order of decreasing priority, to NEW. */
1823 while (incoming_used
< argc
)
1826 int best_priority
= -9999;
1828 /* Find the highest priority remaining option.
1829 If several have equal priority, take the first of them. */
1830 for (from
= 1; from
< argc
; from
++)
1832 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1834 best_priority
= priority
[from
];
1837 /* Skip option arguments--they are tied to the options. */
1838 if (options
[from
] > 0)
1839 from
+= options
[from
];
1845 /* Copy the highest priority remaining option, with its args, to NEW.
1846 Unless it is a duplicate of the previous one. */
1847 if (! (options
[best
] == 0
1848 && ! strcmp (new[to
- 1], argv
[best
])))
1850 new[to
++] = argv
[best
];
1851 for (i
= 0; i
< options
[best
]; i
++)
1852 new[to
++] = argv
[best
+ i
+ 1];
1855 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1857 /* Clear out this option in ARGV. */
1859 for (i
= 0; i
< options
[best
]; i
++)
1860 argv
[best
+ i
+ 1] = 0;
1863 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1867 memcpy (argv
, new, sizeof (char *) * argc
);
1874 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1875 doc
: /* Exit the Emacs job and kill it.
1876 If ARG is an integer, return ARG as the exit program code.
1877 If ARG is a string, stuff it as keyboard input.
1879 This function is called upon receipt of the signals SIGTERM
1880 or SIGHUP, and upon SIGINT in batch mode.
1882 The value of `kill-emacs-hook', if not void,
1883 is a list of functions (of no args),
1884 all of which are called before Emacs is actually killed. */
1885 attributes
: noreturn
)
1890 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1892 waiting_for_input
= 0;
1893 run_hook (Qkill_emacs_hook
);
1895 #ifdef HAVE_X_WINDOWS
1896 /* Transfer any clipboards we own to the clipboard manager. */
1897 x_clipboard_manager_save_all ();
1900 shut_down_emacs (0, (STRINGP (arg
) && !feof (stdin
)) ? arg
: Qnil
);
1903 ns_release_autorelease_pool (ns_pool
);
1906 /* If we have an auto-save list file,
1907 kill it because we are exiting Emacs deliberately (not crashing).
1908 Do it after shut_down_emacs, which does an auto-save. */
1909 if (STRINGP (Vauto_save_list_file_name
))
1911 Lisp_Object listfile
;
1912 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1913 unlink (SSDATA (listfile
));
1917 exit_code
= (XINT (arg
) < 0
1918 ? XINT (arg
) | INT_MIN
1919 : XINT (arg
) & INT_MAX
);
1921 exit_code
= EXIT_SUCCESS
;
1926 /* Perform an orderly shutdown of Emacs. Autosave any modified
1927 buffers, kill any child processes, clean up the terminal modes (if
1928 we're in the foreground), and other stuff like that. Don't perform
1929 any redisplay; this may be called when Emacs is shutting down in
1930 the background, or after its X connection has died.
1932 If SIG is a signal number, print a message for it.
1934 This is called by fatal signal handlers, X protocol error handlers,
1938 shut_down_emacs (int sig
, Lisp_Object stuff
)
1940 /* Prevent running of hooks from now on. */
1943 /* Don't update display from now on. */
1944 Vinhibit_redisplay
= Qt
;
1946 /* If we are controlling the terminal, reset terminal modes. */
1949 pid_t pgrp
= getpgrp ();
1950 pid_t tpgrp
= tcgetpgrp (0);
1951 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1953 reset_all_sys_modes ();
1954 if (sig
&& sig
!= SIGTERM
)
1956 static char const format
[] = "Fatal error %d: ";
1957 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1958 int buflen
= sprintf (buf
, format
, sig
);
1959 char const *sig_desc
= safe_strsignal (sig
);
1960 emacs_write (STDERR_FILENO
, buf
, buflen
);
1961 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1967 reset_all_sys_modes ();
1970 stuff_buffered_input (stuff
);
1972 inhibit_sentinels
= 1;
1973 kill_buffer_processes (Qnil
);
1974 Fdo_auto_save (Qt
, Qnil
);
1976 unlock_all_files ();
1978 /* There is a tendency for a SIGIO signal to arrive within exit,
1979 and cause a SIGHUP because the input descriptor is already closed. */
1982 /* Do this only if terminating normally, we want glyph matrices
1983 etc. in a core dump. */
1984 if (sig
== 0 || sig
== SIGTERM
)
1986 check_glyph_memory ();
1987 check_message_stack ();
1995 ns_term_shutdown (sig
);
1999 xml_cleanup_parser ();
2013 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2014 doc
: /* Dump current state of Emacs into executable file FILENAME.
2015 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2016 This is used in the file `loadup.el' when building Emacs.
2018 You must run Emacs in batch mode in order to dump it. */)
2019 (Lisp_Object filename
, Lisp_Object symfile
)
2023 ptrdiff_t count
= SPECPDL_INDEX ();
2027 if (! noninteractive
)
2028 error ("Dumping Emacs works only in batch mode");
2031 error ("Emacs can be dumped only once");
2035 /* Warn if the gap between BSS end and heap start is larger than this. */
2036 # define MAX_HEAP_BSS_DIFF (1024*1024)
2038 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2040 fprintf (stderr
, "**************************************************\n");
2041 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2042 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2044 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2045 fprintf (stderr
, "fail because of this. See the section about\n");
2046 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2047 fprintf (stderr
, "**************************************************\n");
2049 #endif /* GNU_LINUX */
2051 /* Bind `command-line-processed' to nil before dumping,
2052 so that the dumped Emacs will process its command line
2053 and set up to work with X windows if appropriate. */
2054 symbol
= intern ("command-line-processed");
2055 specbind (symbol
, Qnil
);
2057 CHECK_STRING (filename
);
2058 filename
= Fexpand_file_name (filename
, Qnil
);
2059 filename
= ENCODE_FILE (filename
);
2060 if (!NILP (symfile
))
2062 CHECK_STRING (symfile
);
2063 if (SCHARS (symfile
))
2065 symfile
= Fexpand_file_name (symfile
, Qnil
);
2066 symfile
= ENCODE_FILE (symfile
);
2071 Vpurify_flag
= Qnil
;
2074 /* Tell malloc where start of impure now is. */
2075 /* Also arrange for warnings when nearly out of space. */
2076 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
2078 /* On Windows, this was done before dumping, and that once suffices.
2079 Meanwhile, my_edata is not valid on Windows. */
2080 memory_warnings (my_edata
, malloc_warning
);
2081 #endif /* not WINDOWSNT */
2082 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
2084 alloc_unexec_pre ();
2086 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2088 alloc_unexec_post ();
2091 Vlibrary_cache
= Qnil
;
2093 #ifdef HAVE_WINDOW_SYSTEM
2094 reset_image_types ();
2099 return unbind_to (count
, Qnil
);
2102 #endif /* not CANNOT_DUMP */
2105 /* Recover from setlocale (LC_ALL, ""). */
2109 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2110 so that numbers are read and printed properly for Emacs Lisp. */
2111 setlocale (LC_NUMERIC
, "C");
2114 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2117 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2119 if (! EQ (*plocale
, desired_locale
))
2121 *plocale
= desired_locale
;
2123 /* Changing categories like LC_TIME usually requires specifying
2124 an encoding suitable for the new locale, but MS-Windows's
2125 'setlocale' will only switch the encoding when LC_ALL is
2126 specified. So we ignore CATEGORY, use LC_ALL instead, and
2127 then restore LC_NUMERIC to "C", so reading and printing
2128 numbers is unaffected. */
2129 setlocale (LC_ALL
, (STRINGP (desired_locale
)
2130 ? SSDATA (desired_locale
)
2133 #else /* !WINDOWSNT */
2134 setlocale (category
, (STRINGP (desired_locale
)
2135 ? SSDATA (desired_locale
)
2137 #endif /* !WINDOWSNT */
2141 /* Set system time locale to match Vsystem_time_locale, if possible. */
2143 synchronize_system_time_locale (void)
2145 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2146 Vsystem_time_locale
);
2149 /* Set system messages locale to match Vsystem_messages_locale, if
2152 synchronize_system_messages_locale (void)
2155 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2156 Vsystem_messages_locale
);
2159 #endif /* HAVE_SETLOCALE */
2163 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2165 const char *path
, *p
;
2166 Lisp_Object lpath
, element
, tem
;
2167 /* Default is to use "." for empty path elements.
2168 But if argument EMPTY is true, use nil instead. */
2169 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2172 static const char *emacs_dir_env
= "%emacs_dir%/";
2173 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2174 const char *edir
= egetenv ("emacs_dir");
2175 char emacs_dir
[MAX_UTF8_PATH
];
2177 /* egetenv looks in process-environment, which holds the variables
2178 in their original system-locale encoding. We need emacs_dir to
2181 filename_from_ansi (edir
, emacs_dir
);
2184 /* It's okay to use getenv here, because this function is only used
2185 to initialize variables when Emacs starts up, and isn't called
2188 path
= getenv (evarname
);
2199 /* Ensure values from the environment use the proper directory separator. */
2205 char *path_utf8
, *q
, *d
;
2208 /* Convert each element of PATH to UTF-8. */
2209 p
= path_copy
= alloca (strlen (path
) + 1);
2210 strcpy (path_copy
, path
);
2211 d
= path_utf8
= alloca (4 * strlen (path
) + 1);
2214 q
= _mbschr (p
, SEPCHAR
);
2217 cnv_result
= filename_from_ansi (p
, d
);
2222 /* If conversion of this PATH elements fails, make sure
2223 destination pointer will stay put, thus effectively
2224 ignoring the offending element. */
2225 if (cnv_result
== 0)
2231 else if (cnv_result
!= 0 && d
> path_utf8
)
2232 d
[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2234 path_copy
= path_utf8
;
2236 path_copy
= alloca (strlen (path
) + 1);
2237 strcpy (path_copy
, path
);
2239 dostounix_filename (path_copy
);
2246 p
= strchr (path
, SEPCHAR
);
2248 p
= path
+ strlen (path
);
2249 element
= ((p
- path
) ? make_unibyte_string (path
, p
- path
)
2251 if (! NILP (element
))
2254 /* Relative file names in the default path are interpreted as
2255 being relative to $emacs_dir. */
2256 if (edir
&& defaulted
2257 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2258 element
= Fexpand_file_name (Fsubstring
2260 make_number (emacs_dir_len
),
2262 build_unibyte_string (emacs_dir
));
2265 /* Add /: to the front of the name
2266 if it would otherwise be treated as magic. */
2267 tem
= Ffind_file_name_handler (element
, Qt
);
2269 /* However, if the handler says "I'm safe",
2270 don't bother adding /:. */
2274 prop
= Fget (tem
, intern ("safe-magic"));
2281 AUTO_STRING (slash_colon
, "/:");
2282 element
= concat2 (slash_colon
, element
);
2284 } /* !NILP (element) */
2286 lpath
= Fcons (element
, lpath
);
2292 return Fnreverse (lpath
);
2295 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2296 doc
: /* Return non-nil if the current emacs process is a daemon.
2297 If the daemon was given a name argument, return that name. */)
2302 return build_string (daemon_name
);
2309 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2310 doc
: /* Mark the Emacs daemon as being initialized.
2311 This finishes the daemonization process by doing the other half of detaching
2312 from the parent process and its tty file descriptors. */)
2318 error ("This function can only be called if emacs is run as a daemon");
2320 if (!DAEMON_RUNNING
)
2321 error ("The daemon has already been initialized");
2323 if (NILP (Vafter_init_time
))
2324 error ("This function can only be called after loading the init files");
2328 /* Get rid of stdin, stdout and stderr. */
2329 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2331 err
|= dup2 (nfd
, 0) < 0;
2332 err
|= dup2 (nfd
, 1) < 0;
2333 err
|= dup2 (nfd
, 2) < 0;
2334 err
|= emacs_close (nfd
) != 0;
2336 /* Closing the pipe will notify the parent that it can exit.
2337 FIXME: In case some other process inherited the pipe, closing it here
2338 won't notify the parent because it's still open elsewhere, so we
2339 additionally send a byte, just to make sure the parent really exits.
2340 Instead, we should probably close the pipe in start-process and
2341 call-process to make sure the pipe is never inherited by
2343 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2344 err
|= emacs_close (daemon_pipe
[1]) != 0;
2345 /* Set it to an invalid value so we know we've already run this function. */
2346 daemon_pipe
[1] = -1;
2347 #else /* WINDOWSNT */
2348 /* Signal the waiting emacsclient process. */
2349 err
|= SetEvent (w32_daemon_event
) == 0;
2350 err
|= CloseHandle (w32_daemon_event
) == 0;
2351 /* Set it to an invalid value so we know we've already run this function. */
2352 w32_daemon_event
= INVALID_HANDLE_VALUE
;
2356 error ("I/O error during daemon initialization");
2361 syms_of_emacs (void)
2363 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2364 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2365 DEFSYM (Qkill_emacs
, "kill-emacs");
2366 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2369 defsubr (&Sdump_emacs
);
2372 defsubr (&Skill_emacs
);
2374 defsubr (&Sinvocation_name
);
2375 defsubr (&Sinvocation_directory
);
2376 defsubr (&Sdaemonp
);
2377 defsubr (&Sdaemon_initialized
);
2379 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2380 doc
: /* Args passed by shell to Emacs, as a list of strings.
2381 Many arguments are deleted from the list as they are processed. */);
2383 DEFVAR_LISP ("system-type", Vsystem_type
,
2384 doc
: /* The value is a symbol indicating the type of operating system you are using.
2386 `gnu' compiled for a GNU Hurd system.
2387 `gnu/linux' compiled for a GNU/Linux system.
2388 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2389 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2390 `ms-dos' compiled as an MS-DOS application.
2391 `windows-nt' compiled as a native W32 application.
2392 `cygwin' compiled using the Cygwin library.
2393 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2394 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2395 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2396 /* See configure.ac for the possible SYSTEM_TYPEs. */
2398 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2399 doc
: /* Value is string indicating configuration Emacs was built for. */);
2400 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2402 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2403 doc
: /* String containing the configuration options Emacs was built with. */);
2404 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2406 DEFVAR_LISP ("system-configuration-features", Vsystem_configuration_features
,
2407 doc
: /* String listing some of the main features this Emacs was compiled with.
2408 An element of the form \"FOO\" generally means that HAVE_FOO was
2409 defined during the build.
2411 This is mainly intended for diagnostic purposes in bug reports.
2412 Don't rely on it for testing whether a feature you want to use is available. */);
2413 Vsystem_configuration_features
= build_string (EMACS_CONFIG_FEATURES
);
2415 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2416 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2418 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2419 doc
: /* Hook run when `kill-emacs' is called.
2420 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2421 in other similar situations), functions placed on this hook should not
2422 expect to be able to interact with the user. To ask for confirmation,
2423 see `kill-emacs-query-functions' instead.
2425 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2426 `noninteractive' was non-nil. */);
2427 Vkill_emacs_hook
= Qnil
;
2429 DEFVAR_LISP ("path-separator", Vpath_separator
,
2430 doc
: /* String containing the character that separates directories in
2431 search paths, such as PATH and other similar environment variables. */);
2434 Vpath_separator
= make_string (&c
, 1);
2437 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2438 doc
: /* The program name that was used to run Emacs.
2439 Any directory names are omitted. */);
2441 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2442 doc
: /* The directory in which the Emacs executable was found, to run it.
2443 The value is nil if that directory's name is not known. */);
2445 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2446 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2447 In an installed Emacs, this is normally nil. It is non-nil if
2448 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2449 within the variable `invocation-directory' or its parent. For example,
2450 this is the case when running an uninstalled Emacs executable from its
2451 build directory. */);
2452 Vinstallation_directory
= Qnil
;
2454 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2455 doc
: /* System locale for messages. */);
2456 Vsystem_messages_locale
= Qnil
;
2458 DEFVAR_LISP ("previous-system-messages-locale",
2459 Vprevious_system_messages_locale
,
2460 doc
: /* Most recently used system locale for messages. */);
2461 Vprevious_system_messages_locale
= Qnil
;
2463 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2464 doc
: /* System locale for time. */);
2465 Vsystem_time_locale
= Qnil
;
2467 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2468 doc
: /* Most recently used system locale for time. */);
2469 Vprevious_system_time_locale
= Qnil
;
2471 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2472 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2473 Vbefore_init_time
= Qnil
;
2475 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2476 doc
: /* Value of `current-time' after loading the init files.
2477 This is nil during initialization. */);
2478 Vafter_init_time
= Qnil
;
2480 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2481 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2482 inhibit_x_resources
= 0;
2484 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2485 doc
: /* Short copyright string for this version of Emacs. */);
2486 Vemacs_copyright
= build_string (emacs_copyright
);
2488 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2489 doc
: /* Version numbers of this version of Emacs. */);
2490 Vemacs_version
= build_string (emacs_version
);
2492 DEFVAR_LISP ("report-emacs-bug-address", Vreport_emacs_bug_address
,
2493 doc
: /* Address of mailing list for GNU Emacs bugs. */);
2494 Vreport_emacs_bug_address
= build_string (emacs_bugreport
);
2496 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2497 doc
: /* Alist of dynamic libraries vs external files implementing them.
2498 Each element is a list (LIBRARY FILE...), where the car is a symbol
2499 representing a supported external library, and the rest are strings giving
2500 alternate filenames for that library.
2502 Emacs tries to load the library from the files in the order they appear on
2503 the list; if none is loaded, the running session of Emacs won't have access
2506 Note that image types `pbm' and `xbm' do not need entries in this variable
2507 because they do not depend on external libraries and are always available.
2509 Also note that this is not a generic facility for accessing external
2510 libraries; only those already known by Emacs will be loaded. */);
2511 Vdynamic_library_alist
= Qnil
;
2512 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2515 Vlibrary_cache
= Qnil
;
2516 staticpro (&Vlibrary_cache
);