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"
70 #include "blockinput.h"
71 #include "syssignal.h"
74 #include "termhooks.h"
79 #include "composite.h"
80 #include "dispextern.h"
83 #include "sysselect.h"
88 #if (defined PROFILING \
89 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
90 # include <sys/gmon.h>
91 extern void moncontrol (int mode
);
100 #include <sys/resource.h>
103 #ifdef HAVE_PERSONALITY_LINUX32
104 #include <sys/personality.h>
107 static const char emacs_version
[] = PACKAGE_VERSION
;
108 static const char emacs_copyright
[] = COPYRIGHT
;
109 static const char emacs_bugreport
[] = PACKAGE_BUGREPORT
;
111 /* Empty lisp strings. To avoid having to build any others. */
112 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
115 /* Cache for externally loaded libraries. */
116 Lisp_Object Vlibrary_cache
;
119 /* Set after Emacs has started up the first time.
120 Prevents reinitialization of the Lisp world and keymaps
121 on subsequent starts. */
124 /* Set to true if this instance of Emacs might dump. */
128 extern void unexec_init_emacs_zone (void);
131 #ifdef DOUG_LEA_MALLOC
132 /* Preserves a pointer to the memory allocated that copies that
133 static data inside glibc's malloc. */
134 static void *malloc_state_ptr
;
135 /* From glibc, a routine that returns a copy of the malloc internal state. */
136 extern void *malloc_get_state (void);
137 /* From glibc, a routine that overwrites the malloc internal state. */
138 extern int malloc_set_state (void *);
139 /* True if the MALLOC_CHECK_ environment variable was set while
140 dumping. Used to work around a bug in glibc's malloc. */
141 static bool malloc_using_checking
;
142 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
143 extern void malloc_enable_thread (void);
146 /* If true, Emacs should not attempt to use a window-specific code,
147 but instead should use the virtual terminal under which it was started. */
148 bool inhibit_window_system
;
150 /* If true, a filter or a sentinel is running. Tested to save the match
151 data on the first attempt to change it inside asynchronous code. */
152 bool running_asynch_code
;
154 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
155 /* If true, -d was specified, meaning we're using some window system. */
159 /* An address near the bottom of the stack.
160 Tells GC how to save a copy of the stack. */
163 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
164 /* The address where the heap starts (from the first sbrk (0) call). */
165 static void *my_heap_start
;
169 /* The gap between BSS end and heap start as far as we can tell. */
170 static uprintmax_t heap_bss_diff
;
173 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
176 On Cocoa, CoreFoundation lib fails in forked process:
177 http://developer.apple.com/ReleaseNotes/
178 CoreFoundation/CoreFoundation.html)
180 On Windows, a Cygwin fork child cannot access the USER subsystem.
182 We mark being in the exec'd process by a daemon name argument of
183 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
184 NAME is the original daemon name, if any. */
185 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
186 # define DAEMON_MUST_EXEC
189 /* True means running Emacs without interactive terminal. */
192 /* True means remove site-lisp directories from load-path. */
195 /* Name for the server started by the daemon.*/
196 static char *daemon_name
;
198 /* Pipe used to send exit notification to the daemon parent at
202 /* Save argv and argc. */
206 static void sort_args (int argc
, char **argv
);
207 static void syms_of_emacs (void);
209 /* C99 needs each string to be at most 4095 characters, and the usage
210 strings below are split to not overflow this limit. */
211 static char const *const usage_message
[] =
214 Run Emacs, the extensible, customizable, self-documenting real-time\n\
215 display editor. The recommended way to start Emacs for normal editing\n\
216 is with no options at all.\n\
218 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
219 read the main documentation for these command-line arguments.\n\
221 Initialization options:\n\
225 --batch do not do interactive display; implies -q\n\
226 --chdir DIR change to directory DIR\n\
227 --daemon start a server in the background\n\
228 --debug-init enable Emacs Lisp debugger for init file\n\
229 --display, -d DISPLAY use X server DISPLAY\n\
232 --no-desktop do not load a saved desktop\n\
233 --no-init-file, -q load neither ~/.emacs nor default.el\n\
234 --no-loadup, -nl do not load loadup.el into bare Emacs\n\
235 --no-site-file do not load site-start.el\n\
236 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
237 --no-splash do not display a splash screen on startup\n\
238 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
241 --quick, -Q equivalent to:\n\
242 -q --no-site-file --no-site-lisp --no-splash\n\
243 --script FILE run FILE as an Emacs Lisp script\n\
244 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
245 --user, -u USER load ~USER/.emacs instead of your own\n\
251 FILE visit FILE using find-file\n\
252 +LINE go to line LINE in next FILE\n\
253 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
254 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
255 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
256 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
259 --file FILE visit FILE using find-file\n\
260 --find-file FILE visit FILE using find-file\n\
261 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
262 --insert FILE insert contents of FILE into current buffer\n\
263 --kill exit without asking for confirmation\n\
264 --load, -l FILE load Emacs Lisp FILE using the load function\n\
265 --visit FILE visit FILE using find-file\n\
271 --background-color, -bg COLOR window background color\n\
272 --basic-display, -D disable many display features;\n\
273 used for debugging Emacs\n\
274 --border-color, -bd COLOR main border color\n\
275 --border-width, -bw WIDTH width of main border\n\
278 --color, --color=MODE override color mode for character terminals;\n\
279 MODE defaults to `auto', and\n\
280 can also be `never', `always',\n\
281 or a mode name like `ansi8'\n\
282 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
283 --font, -fn FONT default font; must be fixed-width\n\
284 --foreground-color, -fg COLOR window foreground color\n\
287 --fullheight, -fh make the first frame high as the screen\n\
288 --fullscreen, -fs make the first frame fullscreen\n\
289 --fullwidth, -fw make the first frame wide as the screen\n\
290 --maximized, -mm make the first frame maximized\n\
291 --geometry, -g GEOMETRY window geometry\n\
294 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
295 --iconic start Emacs in iconified state\n\
296 --internal-border, -ib WIDTH width between text and main border\n\
297 --line-spacing, -lsp PIXELS additional space to put between lines\n\
298 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
299 --name NAME title for initial Emacs frame\n\
302 --no-blinking-cursor, -nbc disable blinking cursor\n\
303 --reverse-video, -r, -rv switch foreground and background\n\
304 --title, -T TITLE title for initial Emacs frame\n\
305 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
306 --xrm XRESOURCES set additional X resources\n\
307 --parent-id XID set parent window\n\
308 --help display this help and exit\n\
309 --version output version information and exit\n\
313 You can generally also specify long option names with a single -; for\n\
314 example, -batch as well as --batch. You can use any unambiguous\n\
315 abbreviation for a --option.\n\
317 Various environment variables and window system resources also affect\n\
318 the operation of Emacs. See the main documentation.\n\
320 Report bugs to " PACKAGE_BUGREPORT
". First, please see the Bugs\n\
321 section of the Emacs manual or the file BUGS.\n"
325 /* True if handling a fatal error already. */
326 bool fatal_error_in_progress
;
329 /* NS autrelease pool, for memory management. */
330 static void *ns_pool
;
335 setlocale (int cat
, char const *locale
)
342 /* Report a fatal error due to signal SIG, output a backtrace of at
343 most BACKTRACE_LIMIT lines, and exit. */
345 terminate_due_to_signal (int sig
, int backtrace_limit
)
347 signal (sig
, SIG_DFL
);
349 /* If fatal error occurs in code below, avoid infinite recursion. */
350 if (! fatal_error_in_progress
)
352 fatal_error_in_progress
= 1;
354 totally_unblock_input ();
355 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
356 Fkill_emacs (make_number (sig
));
358 shut_down_emacs (sig
, Qnil
);
359 emacs_backtrace (backtrace_limit
);
362 /* Signal the same code; this time it will really be fatal.
363 Since we're in a signal handler, the signal is blocked, so we
364 have to unblock it if we want to really receive it. */
368 sigemptyset (&unblocked
);
369 sigaddset (&unblocked
, sig
);
370 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
376 /* This shouldn't be executed, but it prevents a warning. */
380 /* Code for dealing with Lisp access to the Unix command line. */
383 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
386 Lisp_Object name
, dir
, handler
;
387 ptrdiff_t count
= SPECPDL_INDEX ();
388 Lisp_Object raw_name
;
389 AUTO_STRING (slash_colon
, "/:");
395 /* Must use argv[0] converted to UTF-8, as it begets many standard
396 file and directory names. */
398 char argv0
[MAX_UTF8_PATH
];
400 if (filename_from_ansi (argv
[0], argv0
) == 0)
401 raw_name
= build_unibyte_string (argv0
);
403 raw_name
= build_unibyte_string (argv
[0]);
406 raw_name
= build_unibyte_string (argv
[0]);
409 /* Add /: to the front of the name
410 if it would otherwise be treated as magic. */
411 handler
= Ffind_file_name_handler (raw_name
, Qt
);
412 if (! NILP (handler
))
413 raw_name
= concat2 (slash_colon
, raw_name
);
415 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
416 Vinvocation_directory
= Ffile_name_directory (raw_name
);
418 /* If we got no directory in argv[0], search PATH to find where
419 Emacs actually came from. */
420 if (NILP (Vinvocation_directory
))
423 int yes
= openp (Vexec_path
, Vinvocation_name
,
424 Vexec_suffixes
, &found
, make_number (X_OK
), false);
427 /* Add /: to the front of the name
428 if it would otherwise be treated as magic. */
429 handler
= Ffind_file_name_handler (found
, Qt
);
430 if (! NILP (handler
))
431 found
= concat2 (slash_colon
, found
);
432 Vinvocation_directory
= Ffile_name_directory (found
);
436 if (!NILP (Vinvocation_directory
)
437 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
438 /* Emacs was started with relative path, like ./emacs.
442 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
444 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
447 Vinstallation_directory
= Qnil
;
449 if (!NILP (Vinvocation_directory
))
451 dir
= Vinvocation_directory
;
453 /* If we are running from the build directory, set DIR to the
454 src subdirectory of the Emacs tree, like on Posix
456 if (SBYTES (dir
) > sizeof ("/i386/") - 1
457 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
459 dir
= Fexpand_file_name (build_string ("../.."), dir
);
460 #else /* !WINDOWSNT */
462 name
= Fexpand_file_name (Vinvocation_name
, dir
);
465 Lisp_Object tem
, lib_src_exists
;
466 Lisp_Object etc_exists
, info_exists
;
468 /* See if dir contains subdirs for use by Emacs.
469 Check for the ones that would exist in a build directory,
470 not including lisp and info. */
471 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
472 lib_src_exists
= Ffile_exists_p (tem
);
475 /* MSDOS installations frequently remove lib-src, but we still
476 must set installation-directory, or else info won't find
477 its files (it uses the value of installation-directory). */
478 tem
= Fexpand_file_name (build_string ("info"), dir
);
479 info_exists
= Ffile_exists_p (tem
);
484 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
486 tem
= Fexpand_file_name (build_string ("etc"), dir
);
487 etc_exists
= Ffile_exists_p (tem
);
488 if (!NILP (etc_exists
))
490 Vinstallation_directory
491 = Ffile_name_as_directory (dir
);
496 /* See if dir's parent contains those subdirs. */
497 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
498 lib_src_exists
= Ffile_exists_p (tem
);
502 /* See the MSDOS commentary above. */
503 tem
= Fexpand_file_name (build_string ("../info"), dir
);
504 info_exists
= Ffile_exists_p (tem
);
509 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
511 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
512 etc_exists
= Ffile_exists_p (tem
);
513 if (!NILP (etc_exists
))
515 tem
= Fexpand_file_name (build_string (".."), dir
);
516 Vinstallation_directory
517 = Ffile_name_as_directory (tem
);
522 /* If the Emacs executable is actually a link,
523 next try the dir that the link points into. */
524 tem
= Ffile_symlink_p (name
);
527 name
= Fexpand_file_name (tem
, dir
);
528 dir
= Ffile_name_directory (name
);
535 Vcommand_line_args
= Qnil
;
537 for (i
= argc
- 1; i
>= 0; i
--)
539 if (i
== 0 || i
> skip_args
)
540 /* For the moment, we keep arguments as is in unibyte strings.
541 They are decoded in the function command-line after we know
542 locale-coding-system. */
544 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
547 unbind_to (count
, Qnil
);
550 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
551 doc
: /* Return the program name that was used to run Emacs.
552 Any directory names are omitted. */)
555 return Fcopy_sequence (Vinvocation_name
);
558 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
560 doc
: /* Return the directory name in which the Emacs executable was located. */)
563 return Fcopy_sequence (Vinvocation_directory
);
567 /* Test whether the next argument in ARGV matches SSTR or a prefix of
568 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
569 (the argument is supposed to have a value) store in *VALPTR either
570 the next argument or the portion of this one after the equal sign.
571 ARGV is read starting at position *SKIPPTR; this index is advanced
572 by the number of arguments used.
574 Too bad we can't just use getopt for all of this, but we don't have
575 enough information to do it right. */
578 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
579 int minlen
, char **valptr
, int *skipptr
)
585 /* Don't access argv[argc]; give up in advance. */
586 if (argc
<= *skipptr
+ 1)
589 arg
= argv
[*skipptr
+1];
592 if (strcmp (arg
, sstr
) == 0)
596 *valptr
= argv
[*skipptr
+2];
603 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
604 ? p
- arg
: strlen (arg
));
605 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
607 else if (valptr
== NULL
)
618 else if (argv
[*skipptr
+2] != NULL
)
620 *valptr
= argv
[*skipptr
+2];
630 #ifdef DOUG_LEA_MALLOC
632 /* malloc can be invoked even before main (e.g. by the dynamic
633 linker), so the dumped malloc state must be restored as early as
634 possible using this special hook. */
637 malloc_initialize_hook (void)
641 if (!malloc_using_checking
)
642 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
643 ignored if the heap to be restored was constructed without
644 malloc checking. Can't use unsetenv, since that calls malloc. */
648 for (p
= environ
; p
&& *p
; p
++)
649 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
658 malloc_set_state (malloc_state_ptr
);
659 #ifndef XMALLOC_OVERRUN_CHECK
660 free (malloc_state_ptr
);
665 if (my_heap_start
== 0)
666 my_heap_start
= sbrk (0);
667 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
671 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
673 #endif /* DOUG_LEA_MALLOC */
675 /* Close standard output and standard error, reporting any write
676 errors as best we can. This is intended for use with atexit. */
678 close_output_streams (void)
680 if (close_stream (stdout
) != 0)
682 emacs_perror ("Write error to standard output");
683 _exit (EXIT_FAILURE
);
686 if (close_stream (stderr
) != 0)
687 _exit (EXIT_FAILURE
);
692 main (int argc
, char **argv
)
697 char stack_bottom_variable
;
698 bool do_initial_setlocale
;
701 #ifdef HAVE_SETRLIMIT
707 #ifdef DAEMON_MUST_EXEC
712 /* If we use --chdir, this records the original directory. */
713 char *original_pwd
= 0;
720 might_dump
= !initialized
;
726 if (my_heap_start
== 0)
727 my_heap_start
= sbrk (0);
729 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
733 #if defined WINDOWSNT || defined HAVE_NTGUI
734 /* Set global variables used to detect Windows version. Do this as
735 early as possible. (unexw32.c calls this function as well, but
736 the additional call here is harmless.) */
737 cache_system_info ();
739 /* On Windows 9X, we have to load UNICOWS.DLL as early as possible,
740 to have non-stub implementations of APIs we need to convert file
741 names between UTF-8 and the system's ANSI codepage. */
742 maybe_load_unicows_dll ();
746 #ifdef RUN_TIME_REMAP
748 run_time_remap (argv
[0]);
751 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
754 unexec_init_emacs_zone ();
757 atexit (close_output_streams
);
759 sort_args (argc
, argv
);
761 while (argv
[argc
]) argc
++;
763 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
765 const char *version
, *copyright
;
768 Lisp_Object tem
, tem2
;
769 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
770 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
773 fprintf (stderr
, "Invalid value of `emacs-version'\n");
778 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
783 version
= SSDATA (tem
);
784 copyright
= SSDATA (tem2
);
789 version
= emacs_version
;
790 copyright
= emacs_copyright
;
792 printf ("%s %s\n", PACKAGE_NAME
, version
);
793 printf ("%s\n", copyright
);
794 printf ("%s comes with ABSOLUTELY NO WARRANTY.\n", PACKAGE_NAME
);
795 printf ("You may redistribute copies of %s\n", PACKAGE_NAME
);
796 printf ("under the terms of the GNU General Public License.\n");
797 printf ("For more information about these matters, ");
798 printf ("see the file named COPYING.\n");
802 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
805 /* argv[] array is kept in its original ANSI codepage encoding,
806 we need to convert to UTF-8, for chdir to work. */
807 char newdir
[MAX_UTF8_PATH
];
809 filename_from_ansi (ch_to_dir
, newdir
);
812 original_pwd
= get_current_dir_name ();
813 if (chdir (ch_to_dir
) != 0)
815 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
816 argv
[0], ch_to_dir
, strerror (errno
));
821 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
822 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
824 #ifdef HAVE_PERSONALITY_LINUX32
825 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
827 /* Set this so we only do this once. */
828 xputenv ("EMACS_HEAP_EXEC=true");
830 /* A flag to turn off address randomization which is introduced
831 in linux kernel shipped with fedora core 4 */
832 #define ADD_NO_RANDOMIZE 0x0040000
833 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
834 #undef ADD_NO_RANDOMIZE
836 execvp (argv
[0], argv
);
838 /* If the exec fails, try to dump anyway. */
839 emacs_perror (argv
[0]);
841 #endif /* HAVE_PERSONALITY_LINUX32 */
843 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
844 /* Extend the stack space available.
845 Don't do that if dumping, since some systems (e.g. DJGPP)
846 might define a smaller stack limit at that time. */
849 && (!noninteractive
|| initialized
)
851 && !getrlimit (RLIMIT_STACK
, &rlim
))
854 /* Approximate the amount regex.c needs per unit of re_max_failures. */
855 int ratio
= 20 * sizeof (char *);
856 /* Then add 33% to cover the size of the smaller stacks that regex.c
857 successively allocates and discards, on its way to the maximum. */
859 /* Add in some extra to cover
860 what we're likely to use for other reasons. */
861 newlim
= re_max_failures
* ratio
+ 200000;
863 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
864 stack allocation routine for new process that the allocation
865 fails if stack limit is not on page boundary. So, round up the
866 new limit to page boundary. */
867 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
869 if (newlim
> rlim
.rlim_max
)
871 newlim
= rlim
.rlim_max
;
872 /* Don't let regex.c overflow the stack we have. */
873 re_max_failures
= (newlim
- 200000) / ratio
;
875 if (rlim
.rlim_cur
< newlim
)
876 rlim
.rlim_cur
= newlim
;
878 setrlimit (RLIMIT_STACK
, &rlim
);
880 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
882 /* Record (approximately) where the stack begins. */
883 stack_bottom
= &stack_bottom_variable
;
887 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
888 /* Arrange to get warning messages as memory fills up. */
889 memory_warnings (0, malloc_warning
);
891 /* Call malloc at least once, to run malloc_initialize_hook.
892 Also call realloc and free for consistency. */
893 free (realloc (malloc (4), 4));
895 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
898 SET_BINARY (fileno (stdin
));
900 SET_BINARY (fileno (stdout
));
903 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
904 The build procedure uses this while dumping, to ensure that the
905 dumped Emacs does not have its system locale tables initialized,
906 as that might cause screwups when the dumped Emacs starts up. */
908 char *lc_all
= getenv ("LC_ALL");
909 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
912 /* Set locale now, so that initial error messages are localized properly.
913 fixup_locale must wait until later, since it builds strings. */
914 if (do_initial_setlocale
)
915 setlocale (LC_ALL
, "");
917 inhibit_window_system
= 0;
919 /* Handle the -t switch, which specifies filename to use as terminal. */
923 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
928 result
= emacs_open (term
, O_RDWR
, 0);
929 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
931 char *errstring
= strerror (errno
);
932 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
937 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
940 fprintf (stderr
, "Using %s\n", term
);
941 #ifdef HAVE_WINDOW_SYSTEM
942 inhibit_window_system
= 1; /* -t => -nw */
949 /* Command line option --no-windows is deprecated and thus not mentioned
950 in the manual and usage information. */
951 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
952 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
953 inhibit_window_system
= 1;
955 /* Handle the -batch switch, which means don't do interactive display. */
957 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
960 Vundo_outer_limit
= Qnil
;
962 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
964 noninteractive
= 1; /* Set batch mode. */
965 /* Convert --script to -scriptload, un-skip it, and sort again
966 so that it will be handled in proper sequence. */
967 /* FIXME broken for --script=FILE - is that supposed to work? */
968 argv
[skip_args
- 1] = (char *) "-scriptload";
970 sort_args (argc
, argv
);
973 /* Handle the --help option, which gives a usage message. */
974 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
977 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
978 for (i
= 0; i
< ARRAYELTS (usage_message
); i
++)
979 fputs (usage_message
[i
], stdout
);
983 /* Make sure IS_DAEMON starts up as false. */
986 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
987 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
992 /* Start as a daemon: fork a new child process which will run the
993 rest of the initialization code, then exit.
995 Detaching a daemon requires the following steps:
999 - close the tty file-descriptors
1001 We only want to do the last 2 steps once the daemon is ready to
1002 serve requests, i.e. after loading .emacs (initialization).
1003 OTOH initialization may start subprocesses (e.g. ispell) and these
1004 should be run from the proper process (the one that will end up
1005 running as daemon) and with the proper "session id" in order for
1006 them to keep working after detaching, so fork and setsid need to be
1007 performed before initialization.
1009 We want to avoid exiting before the server socket is ready, so
1010 use a pipe for synchronization. The parent waits for the child
1011 to close its end of the pipe (using `daemon-initialized')
1013 if (emacs_pipe (daemon_pipe
) != 0)
1015 fprintf (stderr
, "Cannot pipe!\n");
1019 #ifndef DAEMON_MUST_EXEC
1021 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1022 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1023 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1024 #endif /* USE_GTK */
1026 #else /* DAEMON_MUST_EXEC */
1027 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1028 f
= fork (); /* in orig */
1030 f
= 0; /* in exec'd */
1031 #endif /* !DAEMON_MUST_EXEC */
1037 /* Close unused writing end of the pipe. */
1038 emacs_close (daemon_pipe
[1]);
1040 /* Just wait for the child to close its end of the pipe. */
1043 retval
= read (daemon_pipe
[0], &buf
, 1);
1045 while (retval
== -1 && errno
== EINTR
);
1049 fprintf (stderr
, "Error reading status from child\n");
1052 else if (retval
== 0)
1054 fprintf (stderr
, "Error: server did not start correctly\n");
1058 emacs_close (daemon_pipe
[0]);
1063 emacs_perror ("fork");
1064 exit (EXIT_CANCELED
);
1067 #ifdef DAEMON_MUST_EXEC
1069 /* In orig process, forked as child, OR in exec'd. */
1070 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1071 { /* In orig, child: now exec w/special daemon name. */
1074 snprintf (fdStr
, sizeof fdStr
,
1075 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1076 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1078 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1080 fprintf (stderr
, "daemon: child name too long\n");
1081 exit (EXIT_CANNOT_INVOKE
);
1084 argv
[skip_args
] = fdStr
;
1086 fcntl (daemon_pipe
[0], F_SETFD
, 0);
1087 fcntl (daemon_pipe
[1], F_SETFD
, 0);
1088 execvp (argv
[0], argv
);
1089 emacs_perror (argv
[0]);
1090 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1093 /* In exec'd: parse special dname into pipe and name info. */
1094 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1095 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1097 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1098 exit (EXIT_CANNOT_INVOKE
);
1100 dname_arg2
[0] = '\0';
1101 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1103 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1104 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1106 #endif /* DAEMON_MUST_EXEC */
1109 daemon_name
= xstrdup (dname_arg
);
1110 /* Close unused reading end of the pipe. */
1111 emacs_close (daemon_pipe
[0]);
1115 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1120 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC \
1121 && !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC
1122 # ifndef CANNOT_DUMP
1123 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1124 that causes an infinite recursive loop with FreeBSD. See
1125 Bug#14569. The part of this bug involving Cygwin is no longer
1126 relevant, now that Cygwin defines HYBRID_MALLOC. */
1127 if (!noninteractive
|| initialized
)
1129 malloc_enable_thread ();
1132 init_signals (dumping
);
1134 noninteractive1
= noninteractive
;
1136 /* Perform basic initializations (not merely interning symbols). */
1143 init_charset_once ();
1144 init_coding_once ();
1145 init_syntax_once (); /* Create standard syntax table. */
1146 init_category_once (); /* Create standard category table. */
1147 init_casetab_once (); /* Must be done before init_buffer_once. */
1148 init_buffer_once (); /* Create buffer table and some buffers. */
1149 init_minibuf_once (); /* Create list of minibuffers. */
1150 /* Must precede init_window_once. */
1152 /* Call syms_of_xfaces before init_window_once because that
1153 function creates Vterminal_frame. Termcap frames now use
1154 faces, and the face implementation uses some symbols as
1157 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1158 be better to arrange things not to have this dependency. */
1160 /* Call syms_of_keyboard before init_window_once because
1161 keyboard sets up symbols that include some face names that
1162 the X support will want to use. This can happen when
1163 CANNOT_DUMP is defined. */
1164 syms_of_keyboard ();
1166 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1168 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1170 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1172 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1174 /* Before syms_of_coding because it initializes Qcharsetp. */
1176 /* Before init_window_once, because it sets up the
1177 Vcoding_system_hash_table. */
1178 syms_of_coding (); /* This should be after syms_of_fileio. */
1180 init_window_once (); /* Init the window system. */
1181 #ifdef HAVE_WINDOW_SYSTEM
1182 init_fringe_once (); /* Swap bitmaps if necessary. */
1183 #endif /* HAVE_WINDOW_SYSTEM */
1188 if (do_initial_setlocale
)
1191 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1192 Vsystem_time_locale
= Vprevious_system_time_locale
;
1197 running_asynch_code
= 0;
1201 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1204 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1207 ns_pool
= ns_alloc_autorelease_pool ();
1208 #ifdef NS_IMPL_GNUSTEP
1209 /* GNUstep stupidly resets our locale settings after we made them. */
1213 if (!noninteractive
)
1215 #ifdef NS_IMPL_COCOA
1216 /* Started from GUI? */
1217 /* FIXME: Do the right thing if getenv returns NULL, or if
1219 if (! inhibit_window_system
&& ! isatty (0) && ! ch_to_dir
)
1220 chdir (getenv ("HOME"));
1221 if (skip_args
< argc
)
1223 if (!strncmp (argv
[skip_args
], "-psn", 4))
1226 if (! ch_to_dir
) chdir (getenv ("HOME"));
1228 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1231 if (! ch_to_dir
) chdir (getenv ("HOME"));
1236 #endif /* HAVE_NS */
1238 #ifdef HAVE_X_WINDOWS
1239 /* Stupid kludge to catch command-line display spec. We can't
1240 handle this argument entirely in window system dependent code
1241 because we don't even know which window system dependent code
1242 to run until we've recognized this argument. */
1244 char *displayname
= 0;
1245 int count_before
= skip_args
;
1247 /* Skip any number of -d options, but only use the last one. */
1250 int count_before_this
= skip_args
;
1252 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1254 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1259 count_before
= count_before_this
;
1262 /* If we have the form --display=NAME,
1263 convert it into -d name.
1264 This requires inserting a new element into argv. */
1265 if (displayname
&& count_before
< skip_args
)
1267 if (skip_args
== count_before
+ 1)
1269 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1270 (argc
- (count_before
+ 2)) * sizeof *argv
);
1271 argv
[count_before
+ 2] = displayname
;
1274 argv
[count_before
+ 1] = (char *) "-d";
1279 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1280 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1284 /* Don't actually discard this arg. */
1285 skip_args
= count_before
;
1287 #else /* !HAVE_X_WINDOWS */
1290 int count_before
= skip_args
;
1292 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1293 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1296 skip_args
= count_before
;
1300 /* argmatch must not be used after here,
1301 except when building temacs
1302 because the -d argument has not been skipped in skip_args. */
1305 /* Call early 'cause init_environment needs it. */
1307 /* Set defaults for several environment variables. */
1309 init_environment (argc
, argv
, skip_args
);
1314 #ifdef HAVE_GFILENOTIFY
1315 globals_of_gfilenotify ();
1320 #ifdef HAVE_W32NOTIFY
1321 globals_of_w32notify ();
1323 /* Initialize environment from registry settings. */
1324 init_environment (argv
);
1325 init_ntproc (dumping
); /* must precede init_editfns. */
1328 /* Initialize and GC-protect Vinitial_environment and
1329 Vprocess_environment before set_initial_environment fills them
1332 syms_of_callproc ();
1333 /* egetenv is a pretty low-level facility, which may get called in
1334 many circumstances; it seems flimsy to put off initializing it
1335 until calling init_callproc. Do not do it when dumping. */
1337 set_initial_environment ();
1339 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1340 if this is not done. Do it after set_global_environment so that we
1341 don't pollute Vglobal_environment. */
1342 /* Setting LANG here will defeat the startup locale processing... */
1347 /* Init buffer storage and default directory of main buffer. */
1348 init_buffer (initialized
);
1350 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1352 /* Must precede init_lread. */
1353 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1357 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1358 Lisp_Object old_log_max
;
1359 old_log_max
= Vmessage_log_max
;
1360 XSETFASTINT (Vmessage_log_max
, 0);
1361 message_dolog ("", 0, 1, 0);
1362 Vmessage_log_max
= old_log_max
;
1365 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1369 /* Check to see if Emacs has been installed correctly. */
1370 check_windows_init_file ();
1373 /* Intern the names of all standard functions and variables;
1374 define standard keys. */
1378 /* The basic levels of Lisp must come first. Note that
1379 syms_of_data and some others have already been called. */
1384 syms_of_floatfns ();
1387 syms_of_bytecode ();
1389 syms_of_casefiddle ();
1391 syms_of_category ();
1393 syms_of_character ();
1400 syms_of_filelock ();
1403 /* syms_of_keymap (); */
1411 syms_of_terminal ();
1417 syms_of_textprop ();
1418 syms_of_composite ();
1421 #endif /* WINDOWSNT */
1428 #ifdef HAVE_WINDOW_SYSTEM
1431 #endif /* HAVE_WINDOW_SYSTEM */
1432 #ifdef HAVE_X_WINDOWS
1437 syms_of_xsettings ();
1444 #endif /* HAVE_X_WINDOWS */
1451 syms_of_decompress ();
1461 #endif /* HAVE_NTGUI */
1463 #if defined WINDOWSNT || defined HAVE_NTGUI
1464 syms_of_w32select ();
1471 syms_of_win16select ();
1478 syms_of_nsselect ();
1480 #endif /* HAVE_NS */
1484 #ifdef HAVE_GFILENOTIFY
1485 syms_of_gfilenotify ();
1486 #endif /* HAVE_GFILENOTIFY */
1490 #endif /* HAVE_INOTIFY */
1493 syms_of_dbusbind ();
1494 #endif /* HAVE_DBUS */
1498 #ifdef HAVE_W32NOTIFY
1499 syms_of_w32notify ();
1500 #endif /* HAVE_W32NOTIFY */
1501 #endif /* WINDOWSNT */
1503 syms_of_profiler ();
1505 keys_of_casefiddle ();
1508 keys_of_keyboard ();
1514 /* Initialization that must be done even if the global variable
1515 initialized is non zero. */
1517 globals_of_w32font ();
1518 globals_of_w32fns ();
1519 globals_of_w32menu ();
1520 #endif /* HAVE_NTGUI */
1522 #if defined WINDOWSNT || defined HAVE_NTGUI
1523 globals_of_w32select ();
1529 /* This calls putenv and so must precede init_process_emacs. Also,
1530 it sets Voperating_system_release, which init_process_emacs uses. */
1533 /* These two call putenv. */
1541 /* This can create a thread that may call getenv, so it must follow
1542 all calls to putenv and setenv. Also, this sets up
1543 add_keyboard_wait_descriptor, which init_display uses. */
1544 init_process_emacs ();
1546 init_keyboard (); /* This too must precede init_sys_modes. */
1547 if (!noninteractive
)
1548 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1551 init_crit (); /* w32notify.c needs this in batch mode. */
1552 #endif /* HAVE_W32NOTIFY */
1554 #ifdef HAVE_WINDOW_SYSTEM
1556 #endif /* HAVE_WINDOW_SYSTEM */
1564 /* Handle -l loadup, args passed by Makefile. */
1565 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1568 char file_utf8
[MAX_UTF8_PATH
];
1570 if (filename_from_ansi (file
, file_utf8
) == 0)
1573 Vtop_level
= list2 (Qload
, build_unibyte_string (file
));
1575 /* Unless next switch is -nl, load "loadup.el" first thing. */
1577 Vtop_level
= list2 (Qload
, build_string ("loadup.el"));
1580 /* Set up for profiling. This is known to work on FreeBSD,
1581 GNU/Linux and MinGW. It might work on some other systems too.
1582 Give it a try and tell us if it works on your system. To compile
1583 for profiling, use the configure option --enable-profiling. */
1584 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1589 extern unsigned char etext
asm ("etext");
1595 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1604 /* Enter editor command loop. This never returns. */
1610 /* Sort the args so we can find the most important ones
1611 at the beginning of argv. */
1613 /* First, here's a table of all the standard options. */
1615 struct standard_args
1618 const char *longname
;
1623 static const struct standard_args standard_args
[] =
1625 { "-version", "--version", 150, 0 },
1626 { "-chdir", "--chdir", 130, 1 },
1627 { "-t", "--terminal", 120, 1 },
1628 { "-nw", "--no-window-system", 110, 0 },
1629 { "-nw", "--no-windows", 110, 0 },
1630 { "-batch", "--batch", 100, 0 },
1631 { "-script", "--script", 100, 1 },
1632 { "-daemon", "--daemon", 99, 0 },
1633 { "-help", "--help", 90, 0 },
1634 { "-nl", "--no-loadup", 70, 0 },
1635 { "-nsl", "--no-site-lisp", 65, 0 },
1636 /* -d must come last before the options handled in startup.el. */
1637 { "-d", "--display", 60, 1 },
1638 { "-display", 0, 60, 1 },
1639 /* Now for the options handled in `command-line' (startup.el). */
1640 /* (Note that to imply -nsl, -Q is partially handled here.) */
1641 { "-Q", "--quick", 55, 0 },
1642 { "-quick", 0, 55, 0 },
1643 { "-q", "--no-init-file", 50, 0 },
1644 { "-no-init-file", 0, 50, 0 },
1645 { "-no-site-file", "--no-site-file", 40, 0 },
1646 { "-u", "--user", 30, 1 },
1647 { "-user", 0, 30, 1 },
1648 { "-debug-init", "--debug-init", 20, 0 },
1649 { "-iconic", "--iconic", 15, 0 },
1650 { "-D", "--basic-display", 12, 0},
1651 { "-basic-display", 0, 12, 0},
1652 { "-nbc", "--no-blinking-cursor", 12, 0 },
1653 /* Now for the options handled in `command-line-1' (startup.el). */
1654 { "-nbi", "--no-bitmap-icon", 10, 0 },
1655 { "-bg", "--background-color", 10, 1 },
1656 { "-background", 0, 10, 1 },
1657 { "-fg", "--foreground-color", 10, 1 },
1658 { "-foreground", 0, 10, 1 },
1659 { "-bd", "--border-color", 10, 1 },
1660 { "-bw", "--border-width", 10, 1 },
1661 { "-ib", "--internal-border", 10, 1 },
1662 { "-ms", "--mouse-color", 10, 1 },
1663 { "-cr", "--cursor-color", 10, 1 },
1664 { "-fn", "--font", 10, 1 },
1665 { "-font", 0, 10, 1 },
1666 { "-fs", "--fullscreen", 10, 0 },
1667 { "-fw", "--fullwidth", 10, 0 },
1668 { "-fh", "--fullheight", 10, 0 },
1669 { "-mm", "--maximized", 10, 0 },
1670 { "-g", "--geometry", 10, 1 },
1671 { "-geometry", 0, 10, 1 },
1672 { "-T", "--title", 10, 1 },
1673 { "-title", 0, 10, 1 },
1674 { "-name", "--name", 10, 1 },
1675 { "-xrm", "--xrm", 10, 1 },
1676 { "-parent-id", "--parent-id", 10, 1 },
1677 { "-r", "--reverse-video", 5, 0 },
1679 { "-reverse", 0, 5, 0 },
1680 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1681 { "-vb", "--vertical-scroll-bars", 5, 0 },
1682 { "-color", "--color", 5, 0},
1683 { "-no-splash", "--no-splash", 3, 0 },
1684 { "-no-desktop", "--no-desktop", 3, 0 },
1686 { "-NSAutoLaunch", 0, 5, 1 },
1687 { "-NXAutoLaunch", 0, 5, 1 },
1688 { "-_NSMachLaunch", 0, 85, 1 },
1689 { "-MachLaunch", 0, 85, 1 },
1690 { "-macosx", 0, 85, 0 },
1691 { "-NSHost", 0, 85, 1 },
1693 /* These have the same priority as ordinary file name args,
1694 so they are not reordered with respect to those. */
1695 { "-L", "--directory", 0, 1 },
1696 { "-directory", 0, 0, 1 },
1697 { "-l", "--load", 0, 1 },
1698 { "-load", 0, 0, 1 },
1699 /* This has no longname, because using --scriptload confuses sort_args,
1700 because then the --script long option seems to match twice; ie
1701 you can't have a long option which is a prefix of another long
1702 option. In any case, this is entirely an internal option. */
1703 { "-scriptload", NULL
, 0, 1 },
1704 { "-f", "--funcall", 0, 1 },
1705 { "-funcall", 0, 0, 1 },
1706 { "-eval", "--eval", 0, 1 },
1707 { "-execute", "--execute", 0, 1 },
1708 { "-find-file", "--find-file", 0, 1 },
1709 { "-visit", "--visit", 0, 1 },
1710 { "-file", "--file", 0, 1 },
1711 { "-insert", "--insert", 0, 1 },
1713 { "-NXOpen", 0, 0, 1 },
1714 { "-NXOpenTemp", 0, 0, 1 },
1715 { "-NSOpen", 0, 0, 1 },
1716 { "-NSOpenTemp", 0, 0, 1 },
1717 { "-GSFilePath", 0, 0, 1 },
1719 /* This should be processed after ordinary file name args and the like. */
1720 { "-kill", "--kill", -10, 0 },
1723 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1724 so that the highest priority ones come first.
1725 Do not change the order of elements of equal priority.
1726 If an option takes an argument, keep it and its argument together.
1728 If an option that takes no argument appears more
1729 than once, eliminate all but one copy of it. */
1732 sort_args (int argc
, char **argv
)
1734 char **new = xmalloc (argc
* sizeof *new);
1735 /* For each element of argv,
1736 the corresponding element of options is:
1737 0 for an option that takes no arguments,
1738 1 for an option that takes one argument, etc.
1739 -1 for an ordinary non-option argument. */
1740 int *options
= xnmalloc (argc
, sizeof *options
);
1741 int *priority
= xnmalloc (argc
, sizeof *priority
);
1743 int incoming_used
= 1;
1747 /* Categorize all the options,
1748 and figure out which argv elts are option arguments. */
1749 for (from
= 1; from
< argc
; from
++)
1753 if (argv
[from
][0] == '-')
1757 /* If we have found "--", don't consider
1758 any more arguments as options. */
1759 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1761 /* Leave the "--", and everything following it, at the end. */
1762 for (; from
< argc
; from
++)
1764 priority
[from
] = -100;
1770 /* Look for a match with a known old-fashioned option. */
1771 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1772 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1774 options
[from
] = standard_args
[i
].nargs
;
1775 priority
[from
] = standard_args
[i
].priority
;
1776 if (from
+ standard_args
[i
].nargs
>= argc
)
1777 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1778 from
+= standard_args
[i
].nargs
;
1782 /* Look for a match with a known long option.
1783 MATCH is -1 if no match so far, -2 if two or more matches so far,
1784 >= 0 (the table index of the match) if just one match so far. */
1785 if (argv
[from
][1] == '-')
1787 char const *equals
= strchr (argv
[from
], '=');
1789 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1793 for (i
= 0; i
< ARRAYELTS (standard_args
); i
++)
1794 if (standard_args
[i
].longname
1795 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1804 /* If we found exactly one match, use that. */
1807 options
[from
] = standard_args
[match
].nargs
;
1808 priority
[from
] = standard_args
[match
].priority
;
1809 /* If --OPTION=VALUE syntax is used,
1810 this option uses just one argv element. */
1813 if (from
+ options
[from
] >= argc
)
1814 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1815 from
+= options
[from
];
1817 /* FIXME When match < 0, shouldn't there be some error,
1818 or at least indication to the user that there was a
1825 /* Copy the arguments, in order of decreasing priority, to NEW. */
1827 while (incoming_used
< argc
)
1830 int best_priority
= -9999;
1832 /* Find the highest priority remaining option.
1833 If several have equal priority, take the first of them. */
1834 for (from
= 1; from
< argc
; from
++)
1836 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1838 best_priority
= priority
[from
];
1841 /* Skip option arguments--they are tied to the options. */
1842 if (options
[from
] > 0)
1843 from
+= options
[from
];
1849 /* Copy the highest priority remaining option, with its args, to NEW.
1850 Unless it is a duplicate of the previous one. */
1851 if (! (options
[best
] == 0
1852 && ! strcmp (new[to
- 1], argv
[best
])))
1854 new[to
++] = argv
[best
];
1855 for (i
= 0; i
< options
[best
]; i
++)
1856 new[to
++] = argv
[best
+ i
+ 1];
1859 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1861 /* Clear out this option in ARGV. */
1863 for (i
= 0; i
< options
[best
]; i
++)
1864 argv
[best
+ i
+ 1] = 0;
1867 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1871 memcpy (argv
, new, sizeof (char *) * argc
);
1878 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1879 doc
: /* Exit the Emacs job and kill it.
1880 If ARG is an integer, return ARG as the exit program code.
1881 If ARG is a string, stuff it as keyboard input.
1883 This function is called upon receipt of the signals SIGTERM
1884 or SIGHUP, and upon SIGINT in batch mode.
1886 The value of `kill-emacs-hook', if not void,
1887 is a list of functions (of no args),
1888 all of which are called before Emacs is actually killed. */
1889 attributes
: noreturn
)
1892 struct gcpro gcpro1
;
1897 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1899 waiting_for_input
= 0;
1900 run_hook (Qkill_emacs_hook
);
1903 #ifdef HAVE_X_WINDOWS
1904 /* Transfer any clipboards we own to the clipboard manager. */
1905 x_clipboard_manager_save_all ();
1908 shut_down_emacs (0, (STRINGP (arg
) && !feof (stdin
)) ? arg
: Qnil
);
1911 ns_release_autorelease_pool (ns_pool
);
1914 /* If we have an auto-save list file,
1915 kill it because we are exiting Emacs deliberately (not crashing).
1916 Do it after shut_down_emacs, which does an auto-save. */
1917 if (STRINGP (Vauto_save_list_file_name
))
1919 Lisp_Object listfile
;
1920 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1921 unlink (SSDATA (listfile
));
1925 exit_code
= (XINT (arg
) < 0
1926 ? XINT (arg
) | INT_MIN
1927 : XINT (arg
) & INT_MAX
);
1929 exit_code
= EXIT_SUCCESS
;
1934 /* Perform an orderly shutdown of Emacs. Autosave any modified
1935 buffers, kill any child processes, clean up the terminal modes (if
1936 we're in the foreground), and other stuff like that. Don't perform
1937 any redisplay; this may be called when Emacs is shutting down in
1938 the background, or after its X connection has died.
1940 If SIG is a signal number, print a message for it.
1942 This is called by fatal signal handlers, X protocol error handlers,
1946 shut_down_emacs (int sig
, Lisp_Object stuff
)
1948 /* Prevent running of hooks from now on. */
1951 /* Don't update display from now on. */
1952 Vinhibit_redisplay
= Qt
;
1954 /* If we are controlling the terminal, reset terminal modes. */
1957 pid_t pgrp
= getpgrp ();
1958 pid_t tpgrp
= tcgetpgrp (0);
1959 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1961 reset_all_sys_modes ();
1962 if (sig
&& sig
!= SIGTERM
)
1964 static char const format
[] = "Fatal error %d: ";
1965 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1966 int buflen
= sprintf (buf
, format
, sig
);
1967 char const *sig_desc
= safe_strsignal (sig
);
1968 emacs_write (STDERR_FILENO
, buf
, buflen
);
1969 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1975 reset_all_sys_modes ();
1978 stuff_buffered_input (stuff
);
1980 inhibit_sentinels
= 1;
1981 kill_buffer_processes (Qnil
);
1982 Fdo_auto_save (Qt
, Qnil
);
1984 unlock_all_files ();
1986 /* There is a tendency for a SIGIO signal to arrive within exit,
1987 and cause a SIGHUP because the input descriptor is already closed. */
1991 /* Do this only if terminating normally, we want glyph matrices
1992 etc. in a core dump. */
1993 if (sig
== 0 || sig
== SIGTERM
)
1995 check_glyph_memory ();
1996 check_message_stack ();
2004 ns_term_shutdown (sig
);
2008 xml_cleanup_parser ();
2022 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2023 doc
: /* Dump current state of Emacs into executable file FILENAME.
2024 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2025 This is used in the file `loadup.el' when building Emacs.
2027 You must run Emacs in batch mode in order to dump it. */)
2028 (Lisp_Object filename
, Lisp_Object symfile
)
2032 ptrdiff_t count
= SPECPDL_INDEX ();
2036 if (! noninteractive
)
2037 error ("Dumping Emacs works only in batch mode");
2040 error ("Emacs can be dumped only once");
2044 /* Warn if the gap between BSS end and heap start is larger than this. */
2045 # define MAX_HEAP_BSS_DIFF (1024*1024)
2047 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2049 fprintf (stderr
, "**************************************************\n");
2050 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2051 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2053 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2054 fprintf (stderr
, "fail because of this. See the section about\n");
2055 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2056 fprintf (stderr
, "**************************************************\n");
2058 #endif /* GNU_LINUX */
2060 /* Bind `command-line-processed' to nil before dumping,
2061 so that the dumped Emacs will process its command line
2062 and set up to work with X windows if appropriate. */
2063 symbol
= intern ("command-line-processed");
2064 specbind (symbol
, Qnil
);
2066 CHECK_STRING (filename
);
2067 filename
= Fexpand_file_name (filename
, Qnil
);
2068 filename
= ENCODE_FILE (filename
);
2069 if (!NILP (symfile
))
2071 CHECK_STRING (symfile
);
2072 if (SCHARS (symfile
))
2074 symfile
= Fexpand_file_name (symfile
, Qnil
);
2075 symfile
= ENCODE_FILE (symfile
);
2080 Vpurify_flag
= Qnil
;
2083 /* Tell malloc where start of impure now is. */
2084 /* Also arrange for warnings when nearly out of space. */
2085 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
2087 /* On Windows, this was done before dumping, and that once suffices.
2088 Meanwhile, my_edata is not valid on Windows. */
2089 memory_warnings (my_edata
, malloc_warning
);
2090 #endif /* not WINDOWSNT */
2091 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
2092 #ifdef DOUG_LEA_MALLOC
2093 malloc_state_ptr
= malloc_get_state ();
2096 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2098 #ifdef DOUG_LEA_MALLOC
2099 free (malloc_state_ptr
);
2103 Vlibrary_cache
= Qnil
;
2105 #ifdef HAVE_WINDOW_SYSTEM
2106 reset_image_types ();
2111 return unbind_to (count
, Qnil
);
2114 #endif /* not CANNOT_DUMP */
2117 /* Recover from setlocale (LC_ALL, ""). */
2121 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2122 so that numbers are read and printed properly for Emacs Lisp. */
2123 setlocale (LC_NUMERIC
, "C");
2126 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2129 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2131 if (! EQ (*plocale
, desired_locale
))
2133 *plocale
= desired_locale
;
2134 setlocale (category
, (STRINGP (desired_locale
)
2135 ? SSDATA (desired_locale
)
2140 /* Set system time locale to match Vsystem_time_locale, if possible. */
2142 synchronize_system_time_locale (void)
2144 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2145 Vsystem_time_locale
);
2148 /* Set system messages locale to match Vsystem_messages_locale, if
2151 synchronize_system_messages_locale (void)
2154 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2155 Vsystem_messages_locale
);
2158 #endif /* HAVE_SETLOCALE */
2162 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2164 const char *path
, *p
;
2165 Lisp_Object lpath
, element
, tem
;
2166 /* Default is to use "." for empty path elements.
2167 But if argument EMPTY is true, use nil instead. */
2168 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2171 static const char *emacs_dir_env
= "%emacs_dir%/";
2172 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2173 const char *edir
= egetenv ("emacs_dir");
2174 char emacs_dir
[MAX_UTF8_PATH
];
2176 /* egetenv looks in process-environment, which holds the variables
2177 in their original system-locale encoding. We need emacs_dir to
2180 filename_from_ansi (edir
, emacs_dir
);
2183 /* It's okay to use getenv here, because this function is only used
2184 to initialize variables when Emacs starts up, and isn't called
2187 path
= getenv (evarname
);
2198 /* Ensure values from the environment use the proper directory separator. */
2204 char *path_utf8
, *q
, *d
;
2207 /* Convert each element of PATH to UTF-8. */
2208 p
= path_copy
= alloca (strlen (path
) + 1);
2209 strcpy (path_copy
, path
);
2210 d
= path_utf8
= alloca (4 * strlen (path
) + 1);
2213 q
= _mbschr (p
, SEPCHAR
);
2216 cnv_result
= filename_from_ansi (p
, d
);
2221 /* If conversion of this PATH elements fails, make sure
2222 destination pointer will stay put, thus effectively
2223 ignoring the offending element. */
2224 if (cnv_result
== 0)
2230 else if (cnv_result
!= 0 && d
> path_utf8
)
2231 d
[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2233 path_copy
= path_utf8
;
2235 path_copy
= alloca (strlen (path
) + 1);
2236 strcpy (path_copy
, path
);
2238 dostounix_filename (path_copy
);
2245 p
= strchr (path
, SEPCHAR
);
2247 p
= path
+ strlen (path
);
2248 element
= (p
- path
? make_unibyte_string (path
, p
- path
)
2250 if (! NILP (element
))
2253 /* Relative file names in the default path are interpreted as
2254 being relative to $emacs_dir. */
2255 if (edir
&& defaulted
2256 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2257 element
= Fexpand_file_name (Fsubstring
2259 make_number (emacs_dir_len
),
2261 build_unibyte_string (emacs_dir
));
2264 /* Add /: to the front of the name
2265 if it would otherwise be treated as magic. */
2266 tem
= Ffind_file_name_handler (element
, Qt
);
2268 /* However, if the handler says "I'm safe",
2269 don't bother adding /:. */
2273 prop
= Fget (tem
, intern ("safe-magic"));
2280 AUTO_STRING (slash_colon
, "/:");
2281 element
= concat2 (slash_colon
, element
);
2283 } /* !NILP (element) */
2285 lpath
= Fcons (element
, lpath
);
2291 return Fnreverse (lpath
);
2294 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2295 doc
: /* Return non-nil if the current emacs process is a daemon.
2296 If the daemon was given a name argument, return that name. */)
2301 return build_string (daemon_name
);
2308 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2309 doc
: /* Mark the Emacs daemon as being initialized.
2310 This finishes the daemonization process by doing the other half of detaching
2311 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_pipe
[1] < 0)
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");
2326 /* Get rid of stdin, stdout and stderr. */
2327 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2329 err
|= dup2 (nfd
, 0) < 0;
2330 err
|= dup2 (nfd
, 1) < 0;
2331 err
|= dup2 (nfd
, 2) < 0;
2332 err
|= emacs_close (nfd
) != 0;
2334 /* Closing the pipe will notify the parent that it can exit.
2335 FIXME: In case some other process inherited the pipe, closing it here
2336 won't notify the parent because it's still open elsewhere, so we
2337 additionally send a byte, just to make sure the parent really exits.
2338 Instead, we should probably close the pipe in start-process and
2339 call-process to make sure the pipe is never inherited by
2341 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2342 err
|= emacs_close (daemon_pipe
[1]) != 0;
2343 /* Set it to an invalid value so we know we've already run this function. */
2344 daemon_pipe
[1] = -1;
2347 error ("I/O error during daemon initialization");
2352 syms_of_emacs (void)
2354 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2355 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2356 DEFSYM (Qkill_emacs
, "kill-emacs");
2357 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2360 defsubr (&Sdump_emacs
);
2363 defsubr (&Skill_emacs
);
2365 defsubr (&Sinvocation_name
);
2366 defsubr (&Sinvocation_directory
);
2367 defsubr (&Sdaemonp
);
2368 defsubr (&Sdaemon_initialized
);
2370 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2371 doc
: /* Args passed by shell to Emacs, as a list of strings.
2372 Many arguments are deleted from the list as they are processed. */);
2374 DEFVAR_LISP ("system-type", Vsystem_type
,
2375 doc
: /* The value is a symbol indicating the type of operating system you are using.
2377 `gnu' compiled for a GNU Hurd system.
2378 `gnu/linux' compiled for a GNU/Linux system.
2379 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2380 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2381 `ms-dos' compiled as an MS-DOS application.
2382 `windows-nt' compiled as a native W32 application.
2383 `cygwin' compiled using the Cygwin library.
2384 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2385 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2386 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2387 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2389 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2390 doc
: /* Value is string indicating configuration Emacs was built for. */);
2391 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2393 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2394 doc
: /* String containing the configuration options Emacs was built with. */);
2395 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2397 DEFVAR_LISP ("system-configuration-features", Vsystem_configuration_features
,
2398 doc
: /* String listing some of the main features this Emacs was compiled with.
2399 An element of the form \"FOO\" generally means that HAVE_FOO was
2400 defined during the build. */);
2401 Vsystem_configuration_features
= build_string (EMACS_CONFIG_FEATURES
);
2403 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2404 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2406 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2407 doc
: /* Hook run when `kill-emacs' is called.
2408 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2409 in other similar situations), functions placed on this hook should not
2410 expect to be able to interact with the user. To ask for confirmation,
2411 see `kill-emacs-query-functions' instead.
2413 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2414 `noninteractive' was non-nil. */);
2415 Vkill_emacs_hook
= Qnil
;
2417 DEFVAR_LISP ("path-separator", Vpath_separator
,
2418 doc
: /* String containing the character that separates directories in
2419 search paths, such as PATH and other similar environment variables. */);
2422 Vpath_separator
= make_string (&c
, 1);
2425 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2426 doc
: /* The program name that was used to run Emacs.
2427 Any directory names are omitted. */);
2429 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2430 doc
: /* The directory in which the Emacs executable was found, to run it.
2431 The value is nil if that directory's name is not known. */);
2433 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2434 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2435 In an installed Emacs, this is normally nil. It is non-nil if
2436 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2437 within the variable `invocation-directory' or its parent. For example,
2438 this is the case when running an uninstalled Emacs executable from its
2439 build directory. */);
2440 Vinstallation_directory
= Qnil
;
2442 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2443 doc
: /* System locale for messages. */);
2444 Vsystem_messages_locale
= Qnil
;
2446 DEFVAR_LISP ("previous-system-messages-locale",
2447 Vprevious_system_messages_locale
,
2448 doc
: /* Most recently used system locale for messages. */);
2449 Vprevious_system_messages_locale
= Qnil
;
2451 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2452 doc
: /* System locale for time. */);
2453 Vsystem_time_locale
= Qnil
;
2455 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2456 doc
: /* Most recently used system locale for time. */);
2457 Vprevious_system_time_locale
= Qnil
;
2459 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2460 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2461 Vbefore_init_time
= Qnil
;
2463 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2464 doc
: /* Value of `current-time' after loading the init files.
2465 This is nil during initialization. */);
2466 Vafter_init_time
= Qnil
;
2468 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2469 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2470 inhibit_x_resources
= 0;
2472 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2473 doc
: /* Short copyright string for this version of Emacs. */);
2474 Vemacs_copyright
= build_string (emacs_copyright
);
2476 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2477 doc
: /* Version numbers of this version of Emacs. */);
2478 Vemacs_version
= build_string (emacs_version
);
2480 DEFVAR_LISP ("report-emacs-bug-address", Vreport_emacs_bug_address
,
2481 doc
: /* Address of mailing list for GNU Emacs bugs. */);
2482 Vreport_emacs_bug_address
= build_string (emacs_bugreport
);
2484 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2485 doc
: /* Alist of dynamic libraries vs external files implementing them.
2486 Each element is a list (LIBRARY FILE...), where the car is a symbol
2487 representing a supported external library, and the rest are strings giving
2488 alternate filenames for that library.
2490 Emacs tries to load the library from the files in the order they appear on
2491 the list; if none is loaded, the running session of Emacs won't have access
2494 Note that image types `pbm' and `xbm' do not need entries in this variable
2495 because they do not depend on external libraries and are always available.
2497 Also note that this is not a generic facility for accessing external
2498 libraries; only those already known by Emacs will be loaded. */);
2499 Vdynamic_library_alist
= Qnil
;
2500 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2503 Vlibrary_cache
= Qnil
;
2504 staticpro (&Vlibrary_cache
);