1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
21 #define INLINE EXTERN_INLINE
27 #include <sys/types.h>
31 #include <close-stream.h>
38 #include <sys/socket.h>
43 #if defined WINDOWSNT || defined HAVE_NTGUI
44 #include "w32select.h"
46 #include "w32common.h"
53 #ifdef HAVE_WINDOW_SYSTEM
55 #endif /* HAVE_WINDOW_SYSTEM */
57 #ifdef NS_IMPL_GNUSTEP
58 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
59 #include <GNUstepBase/GSConfig.h>
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"
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
[] = VERSION
;
108 static const char emacs_copyright
[] = COPYRIGHT
;
110 /* Empty lisp strings. To avoid having to build any others. */
111 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
114 /* Cache for externally loaded libraries. */
115 Lisp_Object Vlibrary_cache
;
118 /* Set after Emacs has started up the first time.
119 Prevents reinitialization of the Lisp world and keymaps
120 on subsequent starts. */
124 extern void unexec_init_emacs_zone (void);
127 #ifdef DOUG_LEA_MALLOC
128 /* Preserves a pointer to the memory allocated that copies that
129 static data inside glibc's malloc. */
130 static void *malloc_state_ptr
;
131 /* From glibc, a routine that returns a copy of the malloc internal state. */
132 extern void *malloc_get_state (void);
133 /* From glibc, a routine that overwrites the malloc internal state. */
134 extern int malloc_set_state (void*);
135 /* True if the MALLOC_CHECK_ environment variable was set while
136 dumping. Used to work around a bug in glibc's malloc. */
137 static bool malloc_using_checking
;
138 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
139 extern void malloc_enable_thread (void);
142 Lisp_Object Qfile_name_handler_alist
;
144 Lisp_Object Qrisky_local_variable
;
146 Lisp_Object Qkill_emacs
;
147 static Lisp_Object Qkill_emacs_hook
;
149 /* If true, Emacs should not attempt to use a window-specific code,
150 but instead should use the virtual terminal under which it was started. */
151 bool inhibit_window_system
;
153 /* If true, a filter or a sentinel is running. Tested to save the match
154 data on the first attempt to change it inside asynchronous code. */
155 bool running_asynch_code
;
157 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
158 /* If true, -d was specified, meaning we're using some window system. */
162 /* An address near the bottom of the stack.
163 Tells GC how to save a copy of the stack. */
166 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
167 /* The address where the heap starts (from the first sbrk (0) call). */
168 static void *my_heap_start
;
172 /* The gap between BSS end and heap start as far as we can tell. */
173 static uprintmax_t heap_bss_diff
;
176 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
179 On Cocoa, CoreFoundation lib fails in forked process:
180 http://developer.apple.com/ReleaseNotes/
181 CoreFoundation/CoreFoundation.html)
183 On Windows, a Cygwin fork child cannot access the USER subsystem.
185 We mark being in the exec'd process by a daemon name argument of
186 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
187 NAME is the original daemon name, if any. */
188 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
189 # define DAEMON_MUST_EXEC
192 /* True means running Emacs without interactive terminal. */
195 /* True means remove site-lisp directories from load-path. */
198 /* Name for the server started by the daemon.*/
199 static char *daemon_name
;
201 /* Pipe used to send exit notification to the daemon parent at
205 /* Save argv and argc. */
209 static void sort_args (int argc
, char **argv
);
210 static void syms_of_emacs (void);
212 /* C89 needs each string be at most 509 characters, so the usage
213 strings below are split to not overflow this limit. */
214 static char const *const usage_message
[] =
217 Run Emacs, the extensible, customizable, self-documenting real-time\n\
218 display editor. The recommended way to start Emacs for normal editing\n\
219 is with no options at all.\n\
221 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
222 read the main documentation for these command-line arguments.\n\
224 Initialization options:\n\
228 --batch do not do interactive display; implies -q\n\
229 --chdir DIR change to directory DIR\n\
230 --daemon start a server in the background\n\
231 --debug-init enable Emacs Lisp debugger for init file\n\
232 --display, -d DISPLAY use X server DISPLAY\n\
235 --no-desktop do not load a saved desktop\n\
236 --no-init-file, -q load neither ~/.emacs nor default.el\n\
237 --no-shared-memory, -nl do not use shared memory\n\
238 --no-site-file do not load site-start.el\n\
239 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
240 --no-splash do not display a splash screen on startup\n\
241 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
244 --quick, -Q equivalent to:\n\
245 -q --no-site-file --no-site-lisp --no-splash\n\
246 --script FILE run FILE as an Emacs Lisp script\n\
247 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
254 FILE visit FILE using find-file\n\
255 +LINE go to line LINE in next FILE\n\
256 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
257 --directory, -L DIR add DIR to variable load-path\n\
258 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
259 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
262 --file FILE visit FILE using find-file\n\
263 --find-file FILE visit FILE using find-file\n\
264 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
265 --insert FILE insert contents of FILE into current buffer\n\
266 --kill exit without asking for confirmation\n\
267 --load, -l FILE load Emacs Lisp FILE using the load function\n\
268 --visit FILE visit FILE using find-file\n\
274 --background-color, -bg COLOR window background color\n\
275 --basic-display, -D disable many display features;\n\
276 used for debugging Emacs\n\
277 --border-color, -bd COLOR main border color\n\
278 --border-width, -bw WIDTH width of main border\n\
281 --color, --color=MODE override color mode for character terminals;\n\
282 MODE defaults to `auto', and\n\
283 can also be `never', `always',\n\
284 or a mode name like `ansi8'\n\
285 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
286 --font, -fn FONT default font; must be fixed-width\n\
287 --foreground-color, -fg COLOR window foreground color\n\
290 --fullheight, -fh make the first frame high as the screen\n\
291 --fullscreen, -fs make the first frame fullscreen\n\
292 --fullwidth, -fw make the first frame wide as the screen\n\
293 --maximized, -mm make the first frame maximized\n\
294 --geometry, -g GEOMETRY window geometry\n\
297 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
298 --iconic start Emacs in iconified state\n\
299 --internal-border, -ib WIDTH width between text and main border\n\
300 --line-spacing, -lsp PIXELS additional space to put between lines\n\
301 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
302 --name NAME title for initial Emacs frame\n\
305 --no-blinking-cursor, -nbc disable blinking cursor\n\
306 --reverse-video, -r, -rv switch foreground and background\n\
307 --title, -T TITLE title for initial Emacs frame\n\
308 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
309 --xrm XRESOURCES set additional X resources\n\
310 --parent-id XID set parent window\n\
311 --help display this help and exit\n\
312 --version output version information and exit\n\
316 You can generally also specify long option names with a single -; for\n\
317 example, -batch as well as --batch. You can use any unambiguous\n\
318 abbreviation for a --option.\n\
320 Various environment variables and window system resources also affect\n\
321 the operation of Emacs. See the main documentation.\n\
323 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
324 section of the Emacs manual or the file BUGS.\n"
328 /* True if handling a fatal error already. */
329 bool fatal_error_in_progress
;
332 /* NS autrelease pool, for memory management. */
333 static void *ns_pool
;
338 setlocale (int cat
, char const *locale
)
345 /* Report a fatal error due to signal SIG, output a backtrace of at
346 most BACKTRACE_LIMIT lines, and exit. */
348 terminate_due_to_signal (int sig
, int backtrace_limit
)
350 signal (sig
, SIG_DFL
);
351 totally_unblock_input ();
353 /* If fatal error occurs in code below, avoid infinite recursion. */
354 if (! fatal_error_in_progress
)
356 fatal_error_in_progress
= 1;
358 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
359 Fkill_emacs (make_number (sig
));
361 shut_down_emacs (sig
, Qnil
);
362 emacs_backtrace (backtrace_limit
);
365 /* Signal the same code; this time it will really be fatal.
366 Since we're in a signal handler, the signal is blocked, so we
367 have to unblock it if we want to really receive it. */
371 sigemptyset (&unblocked
);
372 sigaddset (&unblocked
, sig
);
373 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
379 /* This shouldn't be executed, but it prevents a warning. */
383 /* Code for dealing with Lisp access to the Unix command line. */
386 init_cmdargs (int argc
, char **argv
, int skip_args
)
389 Lisp_Object name
, dir
, handler
;
390 ptrdiff_t count
= SPECPDL_INDEX ();
391 Lisp_Object raw_name
;
396 raw_name
= build_string (argv
[0]);
398 /* Add /: to the front of the name
399 if it would otherwise be treated as magic. */
400 handler
= Ffind_file_name_handler (raw_name
, Qt
);
401 if (! NILP (handler
))
402 raw_name
= concat2 (build_string ("/:"), raw_name
);
404 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
405 Vinvocation_directory
= Ffile_name_directory (raw_name
);
407 /* If we got no directory in argv[0], search PATH to find where
408 Emacs actually came from. */
409 if (NILP (Vinvocation_directory
))
412 int yes
= openp (Vexec_path
, Vinvocation_name
,
413 Vexec_suffixes
, &found
, make_number (X_OK
));
416 /* Add /: to the front of the name
417 if it would otherwise be treated as magic. */
418 handler
= Ffind_file_name_handler (found
, Qt
);
419 if (! NILP (handler
))
420 found
= concat2 (build_string ("/:"), found
);
421 Vinvocation_directory
= Ffile_name_directory (found
);
425 if (!NILP (Vinvocation_directory
)
426 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
427 /* Emacs was started with relative path, like ./emacs.
429 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
431 Vinstallation_directory
= Qnil
;
433 if (!NILP (Vinvocation_directory
))
435 dir
= Vinvocation_directory
;
437 /* If we are running from the build directory, set DIR to the
438 src subdirectory of the Emacs tree, like on Posix
440 if (SBYTES (dir
) > sizeof ("/i386/") - 1
441 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
443 dir
= Fexpand_file_name (build_string ("../.."), dir
);
444 #else /* !WINDOWSNT */
446 name
= Fexpand_file_name (Vinvocation_name
, dir
);
449 Lisp_Object tem
, lib_src_exists
;
450 Lisp_Object etc_exists
, info_exists
;
452 /* See if dir contains subdirs for use by Emacs.
453 Check for the ones that would exist in a build directory,
454 not including lisp and info. */
455 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
456 lib_src_exists
= Ffile_exists_p (tem
);
459 /* MSDOS installations frequently remove lib-src, but we still
460 must set installation-directory, or else info won't find
461 its files (it uses the value of installation-directory). */
462 tem
= Fexpand_file_name (build_string ("info"), dir
);
463 info_exists
= Ffile_exists_p (tem
);
468 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
470 tem
= Fexpand_file_name (build_string ("etc"), dir
);
471 etc_exists
= Ffile_exists_p (tem
);
472 if (!NILP (etc_exists
))
474 Vinstallation_directory
475 = Ffile_name_as_directory (dir
);
480 /* See if dir's parent contains those subdirs. */
481 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
482 lib_src_exists
= Ffile_exists_p (tem
);
486 /* See the MSDOS commentary above. */
487 tem
= Fexpand_file_name (build_string ("../info"), dir
);
488 info_exists
= Ffile_exists_p (tem
);
493 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
495 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
496 etc_exists
= Ffile_exists_p (tem
);
497 if (!NILP (etc_exists
))
499 tem
= Fexpand_file_name (build_string (".."), dir
);
500 Vinstallation_directory
501 = Ffile_name_as_directory (tem
);
506 /* If the Emacs executable is actually a link,
507 next try the dir that the link points into. */
508 tem
= Ffile_symlink_p (name
);
511 name
= Fexpand_file_name (tem
, dir
);
512 dir
= Ffile_name_directory (name
);
519 Vcommand_line_args
= Qnil
;
521 for (i
= argc
- 1; i
>= 0; i
--)
523 if (i
== 0 || i
> skip_args
)
524 /* For the moment, we keep arguments as is in unibyte strings.
525 They are decoded in the function command-line after we know
526 locale-coding-system. */
528 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
531 unbind_to (count
, Qnil
);
534 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
535 doc
: /* Return the program name that was used to run Emacs.
536 Any directory names are omitted. */)
539 return Fcopy_sequence (Vinvocation_name
);
542 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
544 doc
: /* Return the directory name in which the Emacs executable was located. */)
547 return Fcopy_sequence (Vinvocation_directory
);
552 /* A valid but unlikely value for the TZ environment value.
553 It is OK (though a bit slower) if the user actually chooses this value. */
554 static char const dump_tz
[] = "UtC0";
557 /* Test whether the next argument in ARGV matches SSTR or a prefix of
558 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
559 (the argument is supposed to have a value) store in *VALPTR either
560 the next argument or the portion of this one after the equal sign.
561 ARGV is read starting at position *SKIPPTR; this index is advanced
562 by the number of arguments used.
564 Too bad we can't just use getopt for all of this, but we don't have
565 enough information to do it right. */
568 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
569 int minlen
, char **valptr
, int *skipptr
)
575 /* Don't access argv[argc]; give up in advance. */
576 if (argc
<= *skipptr
+ 1)
579 arg
= argv
[*skipptr
+1];
582 if (strcmp (arg
, sstr
) == 0)
586 *valptr
= argv
[*skipptr
+2];
593 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
594 ? p
- arg
: strlen (arg
));
595 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
597 else if (valptr
== NULL
)
608 else if (argv
[*skipptr
+2] != NULL
)
610 *valptr
= argv
[*skipptr
+2];
620 #ifdef DOUG_LEA_MALLOC
622 /* malloc can be invoked even before main (e.g. by the dynamic
623 linker), so the dumped malloc state must be restored as early as
624 possible using this special hook. */
627 malloc_initialize_hook (void)
631 if (!malloc_using_checking
)
632 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
633 ignored if the heap to be restored was constructed without
634 malloc checking. Can't use unsetenv, since that calls malloc. */
638 for (p
= environ
; p
&& *p
; p
++)
639 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
648 malloc_set_state (malloc_state_ptr
);
649 #ifndef XMALLOC_OVERRUN_CHECK
650 free (malloc_state_ptr
);
655 if (my_heap_start
== 0)
656 my_heap_start
= sbrk (0);
657 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
661 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
663 #endif /* DOUG_LEA_MALLOC */
665 /* Close standard output and standard error, reporting any write
666 errors as best we can. This is intended for use with atexit. */
668 close_output_streams (void)
670 if (close_stream (stdout
) != 0)
672 emacs_perror ("Write error to standard output");
673 _exit (EXIT_FAILURE
);
676 if (close_stream (stderr
) != 0)
677 _exit (EXIT_FAILURE
);
682 main (int argc
, char **argv
)
687 char stack_bottom_variable
;
688 bool do_initial_setlocale
;
691 #ifdef HAVE_SETRLIMIT
697 #ifdef DAEMON_MUST_EXEC
706 #ifdef G_SLICE_ALWAYS_MALLOC
707 /* This is used by the Cygwin build. It's not needed starting with
708 cygwin-1.7.24, but it doesn't do any harm. */
709 xputenv ("G_SLICE=always-malloc");
715 extern char my_endbss
[];
716 extern char *my_endbss_static
;
718 if (my_heap_start
== 0)
719 my_heap_start
= sbrk (0);
721 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
725 #if defined WINDOWSNT || defined HAVE_NTGUI
726 /* Set global variables used to detect Windows version. Do this as
727 early as possible. (unexw32.c calls this function as well, but
728 the additional call here is harmless.) */
729 cache_system_info ();
732 #ifdef RUN_TIME_REMAP
734 run_time_remap (argv
[0]);
737 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
740 unexec_init_emacs_zone ();
743 atexit (close_output_streams
);
745 sort_args (argc
, argv
);
747 while (argv
[argc
]) argc
++;
749 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
751 const char *version
, *copyright
;
754 Lisp_Object tem
, tem2
;
755 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
756 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
759 fprintf (stderr
, "Invalid value of `emacs-version'\n");
764 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
769 version
= SSDATA (tem
);
770 copyright
= SSDATA (tem2
);
775 version
= emacs_version
;
776 copyright
= emacs_copyright
;
778 printf ("GNU Emacs %s\n", version
);
779 printf ("%s\n", copyright
);
780 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
781 printf ("You may redistribute copies of Emacs\n");
782 printf ("under the terms of the GNU General Public License.\n");
783 printf ("For more information about these matters, ");
784 printf ("see the file named COPYING.\n");
788 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
789 if (chdir (ch_to_dir
) == -1)
791 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
792 argv
[0], ch_to_dir
, strerror (errno
));
796 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
797 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
799 #ifdef HAVE_PERSONALITY_LINUX32
800 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
802 /* Set this so we only do this once. */
803 xputenv ("EMACS_HEAP_EXEC=true");
805 /* A flag to turn off address randomization which is introduced
806 in linux kernel shipped with fedora core 4 */
807 #define ADD_NO_RANDOMIZE 0x0040000
808 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
809 #undef ADD_NO_RANDOMIZE
811 execvp (argv
[0], argv
);
813 /* If the exec fails, try to dump anyway. */
814 emacs_perror (argv
[0]);
816 #endif /* HAVE_PERSONALITY_LINUX32 */
818 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
819 /* Extend the stack space available.
820 Don't do that if dumping, since some systems (e.g. DJGPP)
821 might define a smaller stack limit at that time. */
824 && (!noninteractive
|| initialized
)
826 && !getrlimit (RLIMIT_STACK
, &rlim
))
829 extern size_t re_max_failures
;
830 /* Approximate the amount regex.c needs per unit of re_max_failures. */
831 int ratio
= 20 * sizeof (char *);
832 /* Then add 33% to cover the size of the smaller stacks that regex.c
833 successively allocates and discards, on its way to the maximum. */
835 /* Add in some extra to cover
836 what we're likely to use for other reasons. */
837 newlim
= re_max_failures
* ratio
+ 200000;
839 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
840 stack allocation routine for new process that the allocation
841 fails if stack limit is not on page boundary. So, round up the
842 new limit to page boundary. */
843 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
845 if (newlim
> rlim
.rlim_max
)
847 newlim
= rlim
.rlim_max
;
848 /* Don't let regex.c overflow the stack we have. */
849 re_max_failures
= (newlim
- 200000) / ratio
;
851 if (rlim
.rlim_cur
< newlim
)
852 rlim
.rlim_cur
= newlim
;
854 setrlimit (RLIMIT_STACK
, &rlim
);
856 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
858 /* Record (approximately) where the stack begins. */
859 stack_bottom
= &stack_bottom_variable
;
863 #ifndef SYSTEM_MALLOC
864 /* Arrange to get warning messages as memory fills up. */
865 memory_warnings (0, malloc_warning
);
867 /* Call malloc at least once, to run malloc_initialize_hook.
868 Also call realloc and free for consistency. */
869 free (realloc (malloc (4), 4));
871 #endif /* not SYSTEM_MALLOC */
873 #if defined (MSDOS) || defined (WINDOWSNT)
874 /* We do all file input/output as binary files. When we need to translate
875 newlines, we do that manually. */
877 #endif /* MSDOS || WINDOWSNT */
880 if (!isatty (fileno (stdin
)))
881 setmode (fileno (stdin
), O_BINARY
);
882 if (!isatty (fileno (stdout
)))
885 setmode (fileno (stdout
), O_BINARY
);
889 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
890 The build procedure uses this while dumping, to ensure that the
891 dumped Emacs does not have its system locale tables initialized,
892 as that might cause screwups when the dumped Emacs starts up. */
894 char *lc_all
= getenv ("LC_ALL");
895 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
898 /* Set locale now, so that initial error messages are localized properly.
899 fixup_locale must wait until later, since it builds strings. */
900 if (do_initial_setlocale
)
901 setlocale (LC_ALL
, "");
903 inhibit_window_system
= 0;
905 /* Handle the -t switch, which specifies filename to use as terminal. */
909 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
914 result
= emacs_open (term
, O_RDWR
, 0);
915 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
917 char *errstring
= strerror (errno
);
918 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
923 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
926 fprintf (stderr
, "Using %s\n", term
);
927 #ifdef HAVE_WINDOW_SYSTEM
928 inhibit_window_system
= 1; /* -t => -nw */
935 /* Command line option --no-windows is deprecated and thus not mentioned
936 in the manual and usage information. */
937 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
938 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
939 inhibit_window_system
= 1;
941 /* Handle the -batch switch, which means don't do interactive display. */
943 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
946 Vundo_outer_limit
= Qnil
;
948 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
950 noninteractive
= 1; /* Set batch mode. */
951 /* Convert --script to -scriptload, un-skip it, and sort again
952 so that it will be handled in proper sequence. */
953 /* FIXME broken for --script=FILE - is that supposed to work? */
954 argv
[skip_args
- 1] = (char *) "-scriptload";
956 sort_args (argc
, argv
);
959 /* Handle the --help option, which gives a usage message. */
960 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
963 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
964 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
965 fputs (usage_message
[i
], stdout
);
969 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
970 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
975 /* Start as a daemon: fork a new child process which will run the
976 rest of the initialization code, then exit.
978 Detaching a daemon requires the following steps:
982 - close the tty file-descriptors
984 We only want to do the last 2 steps once the daemon is ready to
985 serve requests, i.e. after loading .emacs (initialization).
986 OTOH initialization may start subprocesses (e.g. ispell) and these
987 should be run from the proper process (the one that will end up
988 running as daemon) and with the proper "session id" in order for
989 them to keep working after detaching, so fork and setsid need to be
990 performed before initialization.
992 We want to avoid exiting before the server socket is ready, so
993 use a pipe for synchronization. The parent waits for the child
994 to close its end of the pipe (using `daemon-initialized')
996 if (emacs_pipe (daemon_pipe
) != 0)
998 fprintf (stderr
, "Cannot pipe!\n");
1002 #ifndef DAEMON_MUST_EXEC
1004 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1005 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1006 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1007 #endif /* USE_GTK */
1009 #else /* DAEMON_MUST_EXEC */
1010 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1011 f
= fork (); /* in orig */
1013 f
= 0; /* in exec'd */
1014 #endif /* !DAEMON_MUST_EXEC */
1020 /* Close unused writing end of the pipe. */
1021 emacs_close (daemon_pipe
[1]);
1023 /* Just wait for the child to close its end of the pipe. */
1026 retval
= read (daemon_pipe
[0], &buf
, 1);
1028 while (retval
== -1 && errno
== EINTR
);
1032 fprintf (stderr
, "Error reading status from child\n");
1035 else if (retval
== 0)
1037 fprintf (stderr
, "Error: server did not start correctly\n");
1041 emacs_close (daemon_pipe
[0]);
1046 emacs_perror ("fork");
1047 exit (EXIT_CANCELED
);
1050 #ifdef DAEMON_MUST_EXEC
1052 /* In orig process, forked as child, OR in exec'd. */
1053 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1054 { /* In orig, child: now exec w/special daemon name. */
1057 snprintf (fdStr
, sizeof fdStr
,
1058 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1059 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1061 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1063 fprintf (stderr
, "daemon: child name too long\n");
1064 exit (EXIT_CANNOT_INVOKE
);
1067 argv
[skip_args
] = fdStr
;
1069 execvp (argv
[0], argv
);
1070 emacs_perror (argv
[0]);
1071 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1074 /* In exec'd: parse special dname into pipe and name info. */
1075 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1076 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1078 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1079 exit (EXIT_CANNOT_INVOKE
);
1081 dname_arg2
[0] = '\0';
1082 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1084 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1086 #endif /* DAEMON_MUST_EXEC */
1089 daemon_name
= xstrdup (dname_arg
);
1090 /* Close unused reading end of the pipe. */
1091 emacs_close (daemon_pipe
[0]);
1095 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1100 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1101 # ifndef CANNOT_DUMP
1102 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1103 that causes an infinite recursive loop with FreeBSD. But do make
1104 it thread-safe when creating emacs, otherwise bootstrap-emacs
1105 fails on Cygwin. See Bug#14569. */
1106 if (!noninteractive
|| initialized
)
1108 malloc_enable_thread ();
1111 init_signals (dumping
);
1113 noninteractive1
= noninteractive
;
1115 /* Perform basic initializations (not merely interning symbols). */
1122 init_charset_once ();
1123 init_coding_once ();
1124 init_syntax_once (); /* Create standard syntax table. */
1125 init_category_once (); /* Create standard category table. */
1126 init_casetab_once (); /* Must be done before init_buffer_once. */
1127 init_buffer_once (); /* Create buffer table and some buffers. */
1128 init_minibuf_once (); /* Create list of minibuffers. */
1129 /* Must precede init_window_once. */
1131 /* Call syms_of_xfaces before init_window_once because that
1132 function creates Vterminal_frame. Termcap frames now use
1133 faces, and the face implementation uses some symbols as
1136 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1137 be better to arrange things not to have this dependency. */
1139 /* Call syms_of_keyboard before init_window_once because
1140 keyboard sets up symbols that include some face names that
1141 the X support will want to use. This can happen when
1142 CANNOT_DUMP is defined. */
1143 syms_of_keyboard ();
1145 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1147 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1149 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1151 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1153 /* Before syms_of_coding because it initializes Qcharsetp. */
1155 /* Before init_window_once, because it sets up the
1156 Vcoding_system_hash_table. */
1157 syms_of_coding (); /* This should be after syms_of_fileio. */
1159 init_window_once (); /* Init the window system. */
1160 #ifdef HAVE_WINDOW_SYSTEM
1161 init_fringe_once (); /* Swap bitmaps if necessary. */
1162 #endif /* HAVE_WINDOW_SYSTEM */
1167 if (do_initial_setlocale
)
1170 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1171 Vsystem_time_locale
= Vprevious_system_time_locale
;
1176 running_asynch_code
= 0;
1180 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1183 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1186 ns_pool
= ns_alloc_autorelease_pool ();
1187 if (!noninteractive
)
1189 #ifdef NS_IMPL_COCOA
1190 /* Started from GUI? */
1191 /* FIXME: Do the right thing if getenv returns NULL, or if
1193 if (! inhibit_window_system
&& ! isatty (0))
1194 chdir (getenv ("HOME"));
1195 else if (skip_args
< argc
)
1197 if (!strncmp (argv
[skip_args
], "-psn", 4))
1200 chdir (getenv ("HOME"));
1202 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1205 chdir (getenv ("HOME"));
1210 #endif /* HAVE_NS */
1212 #ifdef HAVE_X_WINDOWS
1213 /* Stupid kludge to catch command-line display spec. We can't
1214 handle this argument entirely in window system dependent code
1215 because we don't even know which window system dependent code
1216 to run until we've recognized this argument. */
1218 char *displayname
= 0;
1219 int count_before
= skip_args
;
1221 /* Skip any number of -d options, but only use the last one. */
1224 int count_before_this
= skip_args
;
1226 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1228 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1233 count_before
= count_before_this
;
1236 /* If we have the form --display=NAME,
1237 convert it into -d name.
1238 This requires inserting a new element into argv. */
1239 if (displayname
&& count_before
< skip_args
)
1241 if (skip_args
== count_before
+ 1)
1243 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1244 (argc
- (count_before
+ 2)) * sizeof *argv
);
1245 argv
[count_before
+ 2] = displayname
;
1248 argv
[count_before
+ 1] = (char *) "-d";
1253 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1254 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1258 /* Don't actually discard this arg. */
1259 skip_args
= count_before
;
1261 #else /* !HAVE_X_WINDOWS */
1264 int count_before
= skip_args
;
1266 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1267 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1270 skip_args
= count_before
;
1274 /* argmatch must not be used after here,
1275 except when building temacs
1276 because the -d argument has not been skipped in skip_args. */
1279 /* Call early 'cause init_environment needs it. */
1281 /* Set defaults for several environment variables. */
1283 init_environment (argc
, argv
, skip_args
);
1288 #ifdef HAVE_GFILENOTIFY
1289 globals_of_gfilenotify ();
1294 #ifdef HAVE_W32NOTIFY
1295 globals_of_w32notify ();
1297 /* Initialize environment from registry settings. */
1298 init_environment (argv
);
1299 init_ntproc (dumping
); /* must precede init_editfns. */
1302 /* Initialize and GC-protect Vinitial_environment and
1303 Vprocess_environment before set_initial_environment fills them
1306 syms_of_callproc ();
1307 /* egetenv is a pretty low-level facility, which may get called in
1308 many circumstances; it seems flimsy to put off initializing it
1309 until calling init_callproc. Do not do it when dumping. */
1311 set_initial_environment ();
1313 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1314 if this is not done. Do it after set_global_environment so that we
1315 don't pollute Vglobal_environment. */
1316 /* Setting LANG here will defeat the startup locale processing... */
1321 init_buffer (); /* Init default directory of main buffer. */
1323 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1324 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1328 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1329 Lisp_Object old_log_max
;
1330 old_log_max
= Vmessage_log_max
;
1331 XSETFASTINT (Vmessage_log_max
, 0);
1332 message_dolog ("", 0, 1, 0);
1333 Vmessage_log_max
= old_log_max
;
1336 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1340 /* Check to see if Emacs has been installed correctly. */
1341 check_windows_init_file ();
1344 /* Intern the names of all standard functions and variables;
1345 define standard keys. */
1349 /* The basic levels of Lisp must come first. Note that
1350 syms_of_data and some others have already been called. */
1355 syms_of_floatfns ();
1358 syms_of_bytecode ();
1360 syms_of_casefiddle ();
1362 syms_of_category ();
1364 syms_of_character ();
1371 syms_of_filelock ();
1374 /* syms_of_keymap (); */
1382 syms_of_terminal ();
1388 syms_of_textprop ();
1389 syms_of_composite ();
1392 #endif /* WINDOWSNT */
1399 #ifdef HAVE_WINDOW_SYSTEM
1402 #endif /* HAVE_WINDOW_SYSTEM */
1403 #ifdef HAVE_X_WINDOWS
1408 syms_of_xsettings ();
1415 #endif /* HAVE_X_WINDOWS */
1422 syms_of_decompress ();
1432 #endif /* HAVE_NTGUI */
1434 #if defined WINDOWSNT || defined HAVE_NTGUI
1435 syms_of_w32select ();
1442 syms_of_win16select ();
1449 syms_of_nsselect ();
1451 #endif /* HAVE_NS */
1457 #ifdef HAVE_GFILENOTIFY
1458 syms_of_gfilenotify ();
1459 #endif /* HAVE_GFILENOTIFY */
1463 #endif /* HAVE_INOTIFY */
1466 syms_of_dbusbind ();
1467 #endif /* HAVE_DBUS */
1471 #ifdef HAVE_W32NOTIFY
1472 syms_of_w32notify ();
1473 #endif /* HAVE_W32NOTIFY */
1474 #endif /* WINDOWSNT */
1476 syms_of_profiler ();
1478 keys_of_casefiddle ();
1481 keys_of_keyboard ();
1487 /* Initialization that must be done even if the global variable
1488 initialized is non zero. */
1490 globals_of_w32font ();
1491 globals_of_w32fns ();
1492 globals_of_w32menu ();
1493 #endif /* HAVE_NTGUI */
1495 #if defined WINDOWSNT || defined HAVE_NTGUI
1496 globals_of_w32select ();
1502 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1503 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1504 init_keyboard (); /* This too must precede init_sys_modes. */
1505 if (!noninteractive
)
1506 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1508 #ifdef HAVE_WINDOW_SYSTEM
1510 #endif /* HAVE_WINDOW_SYSTEM */
1518 /* Handle -l loadup, args passed by Makefile. */
1519 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1520 Vtop_level
= list2 (intern_c_string ("load"), build_string (file
));
1521 /* Unless next switch is -nl, load "loadup.el" first thing. */
1523 Vtop_level
= list2 (intern_c_string ("load"),
1524 build_string ("loadup.el"));
1531 /* If the execution TZ happens to be the same as the dump TZ,
1532 change it to some other value and then change it back,
1533 to force the underlying implementation to reload the TZ info.
1534 This is needed on implementations that load TZ info from files,
1535 since the TZ file contents may differ between dump and execution. */
1536 char *tz
= getenv ("TZ");
1537 if (tz
&& !strcmp (tz
, dump_tz
))
1547 /* Set up for profiling. This is known to work on FreeBSD,
1548 GNU/Linux and MinGW. It might work on some other systems too.
1549 Give it a try and tell us if it works on your system. To compile
1550 for profiling, use the configure option --enable-profiling. */
1551 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1556 extern unsigned char etext
asm ("etext");
1562 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1571 #ifdef LOCALTIME_CACHE
1572 /* Some versions of localtime have a bug. They cache the value of the time
1573 zone rather than looking it up every time. Since localtime() is
1574 called to bolt the undumping time into the undumped emacs, this
1575 results in localtime ignoring the TZ environment variable.
1576 This flushes the new TZ value into localtime. */
1578 #endif /* defined (LOCALTIME_CACHE) */
1580 /* Enter editor command loop. This never returns. */
1586 /* Sort the args so we can find the most important ones
1587 at the beginning of argv. */
1589 /* First, here's a table of all the standard options. */
1591 struct standard_args
1594 const char *longname
;
1599 static const struct standard_args standard_args
[] =
1601 { "-version", "--version", 150, 0 },
1602 { "-chdir", "--chdir", 130, 1 },
1603 { "-t", "--terminal", 120, 1 },
1604 { "-nw", "--no-window-system", 110, 0 },
1605 { "-nw", "--no-windows", 110, 0 },
1606 { "-batch", "--batch", 100, 0 },
1607 { "-script", "--script", 100, 1 },
1608 { "-daemon", "--daemon", 99, 0 },
1609 { "-help", "--help", 90, 0 },
1610 { "-nl", "--no-loadup", 70, 0 },
1611 { "-nsl", "--no-site-lisp", 65, 0 },
1612 /* -d must come last before the options handled in startup.el. */
1613 { "-d", "--display", 60, 1 },
1614 { "-display", 0, 60, 1 },
1615 /* Now for the options handled in `command-line' (startup.el). */
1616 /* (Note that to imply -nsl, -Q is partially handled here.) */
1617 { "-Q", "--quick", 55, 0 },
1618 { "-quick", 0, 55, 0 },
1619 { "-q", "--no-init-file", 50, 0 },
1620 { "-no-init-file", 0, 50, 0 },
1621 { "-no-site-file", "--no-site-file", 40, 0 },
1622 { "-u", "--user", 30, 1 },
1623 { "-user", 0, 30, 1 },
1624 { "-debug-init", "--debug-init", 20, 0 },
1625 { "-iconic", "--iconic", 15, 0 },
1626 { "-D", "--basic-display", 12, 0},
1627 { "-basic-display", 0, 12, 0},
1628 { "-nbc", "--no-blinking-cursor", 12, 0 },
1629 /* Now for the options handled in `command-line-1' (startup.el). */
1630 { "-nbi", "--no-bitmap-icon", 10, 0 },
1631 { "-bg", "--background-color", 10, 1 },
1632 { "-background", 0, 10, 1 },
1633 { "-fg", "--foreground-color", 10, 1 },
1634 { "-foreground", 0, 10, 1 },
1635 { "-bd", "--border-color", 10, 1 },
1636 { "-bw", "--border-width", 10, 1 },
1637 { "-ib", "--internal-border", 10, 1 },
1638 { "-ms", "--mouse-color", 10, 1 },
1639 { "-cr", "--cursor-color", 10, 1 },
1640 { "-fn", "--font", 10, 1 },
1641 { "-font", 0, 10, 1 },
1642 { "-fs", "--fullscreen", 10, 0 },
1643 { "-fw", "--fullwidth", 10, 0 },
1644 { "-fh", "--fullheight", 10, 0 },
1645 { "-mm", "--maximized", 10, 0 },
1646 { "-g", "--geometry", 10, 1 },
1647 { "-geometry", 0, 10, 1 },
1648 { "-T", "--title", 10, 1 },
1649 { "-title", 0, 10, 1 },
1650 { "-name", "--name", 10, 1 },
1651 { "-xrm", "--xrm", 10, 1 },
1652 { "-parent-id", "--parent-id", 10, 1 },
1653 { "-r", "--reverse-video", 5, 0 },
1655 { "-reverse", 0, 5, 0 },
1656 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1657 { "-vb", "--vertical-scroll-bars", 5, 0 },
1658 { "-color", "--color", 5, 0},
1659 { "-no-splash", "--no-splash", 3, 0 },
1660 { "-no-desktop", "--no-desktop", 3, 0 },
1662 { "-NSAutoLaunch", 0, 5, 1 },
1663 { "-NXAutoLaunch", 0, 5, 1 },
1664 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1665 { "-_NSMachLaunch", 0, 85, 1 },
1666 { "-MachLaunch", 0, 85, 1 },
1667 { "-macosx", 0, 85, 0 },
1668 { "-NSHost", 0, 85, 1 },
1670 /* These have the same priority as ordinary file name args,
1671 so they are not reordered with respect to those. */
1672 { "-L", "--directory", 0, 1 },
1673 { "-directory", 0, 0, 1 },
1674 { "-l", "--load", 0, 1 },
1675 { "-load", 0, 0, 1 },
1676 /* This has no longname, because using --scriptload confuses sort_args,
1677 because then the --script long option seems to match twice; ie
1678 you can't have a long option which is a prefix of another long
1679 option. In any case, this is entirely an internal option. */
1680 { "-scriptload", NULL
, 0, 1 },
1681 { "-f", "--funcall", 0, 1 },
1682 { "-funcall", 0, 0, 1 },
1683 { "-eval", "--eval", 0, 1 },
1684 { "-execute", "--execute", 0, 1 },
1685 { "-find-file", "--find-file", 0, 1 },
1686 { "-visit", "--visit", 0, 1 },
1687 { "-file", "--file", 0, 1 },
1688 { "-insert", "--insert", 0, 1 },
1690 { "-NXOpen", 0, 0, 1 },
1691 { "-NXOpenTemp", 0, 0, 1 },
1692 { "-NSOpen", 0, 0, 1 },
1693 { "-NSOpenTemp", 0, 0, 1 },
1694 { "-GSFilePath", 0, 0, 1 },
1696 /* This should be processed after ordinary file name args and the like. */
1697 { "-kill", "--kill", -10, 0 },
1700 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1701 so that the highest priority ones come first.
1702 Do not change the order of elements of equal priority.
1703 If an option takes an argument, keep it and its argument together.
1705 If an option that takes no argument appears more
1706 than once, eliminate all but one copy of it. */
1709 sort_args (int argc
, char **argv
)
1711 char **new = xmalloc (argc
* sizeof *new);
1712 /* For each element of argv,
1713 the corresponding element of options is:
1714 0 for an option that takes no arguments,
1715 1 for an option that takes one argument, etc.
1716 -1 for an ordinary non-option argument. */
1717 int *options
= xnmalloc (argc
, sizeof *options
);
1718 int *priority
= xnmalloc (argc
, sizeof *priority
);
1720 int incoming_used
= 1;
1724 /* Categorize all the options,
1725 and figure out which argv elts are option arguments. */
1726 for (from
= 1; from
< argc
; from
++)
1730 if (argv
[from
][0] == '-')
1734 /* If we have found "--", don't consider
1735 any more arguments as options. */
1736 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1738 /* Leave the "--", and everything following it, at the end. */
1739 for (; from
< argc
; from
++)
1741 priority
[from
] = -100;
1747 /* Look for a match with a known old-fashioned option. */
1748 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1749 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1751 options
[from
] = standard_args
[i
].nargs
;
1752 priority
[from
] = standard_args
[i
].priority
;
1753 if (from
+ standard_args
[i
].nargs
>= argc
)
1754 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1755 from
+= standard_args
[i
].nargs
;
1759 /* Look for a match with a known long option.
1760 MATCH is -1 if no match so far, -2 if two or more matches so far,
1761 >= 0 (the table index of the match) if just one match so far. */
1762 if (argv
[from
][1] == '-')
1764 char const *equals
= strchr (argv
[from
], '=');
1766 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1771 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1772 if (standard_args
[i
].longname
1773 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1782 /* If we found exactly one match, use that. */
1785 options
[from
] = standard_args
[match
].nargs
;
1786 priority
[from
] = standard_args
[match
].priority
;
1787 /* If --OPTION=VALUE syntax is used,
1788 this option uses just one argv element. */
1791 if (from
+ options
[from
] >= argc
)
1792 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1793 from
+= options
[from
];
1795 /* FIXME When match < 0, shouldn't there be some error,
1796 or at least indication to the user that there was a
1803 /* Copy the arguments, in order of decreasing priority, to NEW. */
1805 while (incoming_used
< argc
)
1808 int best_priority
= -9999;
1810 /* Find the highest priority remaining option.
1811 If several have equal priority, take the first of them. */
1812 for (from
= 1; from
< argc
; from
++)
1814 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1816 best_priority
= priority
[from
];
1819 /* Skip option arguments--they are tied to the options. */
1820 if (options
[from
] > 0)
1821 from
+= options
[from
];
1827 /* Copy the highest priority remaining option, with its args, to NEW.
1828 Unless it is a duplicate of the previous one. */
1829 if (! (options
[best
] == 0
1830 && ! strcmp (new[to
- 1], argv
[best
])))
1832 new[to
++] = argv
[best
];
1833 for (i
= 0; i
< options
[best
]; i
++)
1834 new[to
++] = argv
[best
+ i
+ 1];
1837 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1839 /* Clear out this option in ARGV. */
1841 for (i
= 0; i
< options
[best
]; i
++)
1842 argv
[best
+ i
+ 1] = 0;
1845 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1849 memcpy (argv
, new, sizeof (char *) * argc
);
1856 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1857 doc
: /* Exit the Emacs job and kill it.
1858 If ARG is an integer, return ARG as the exit program code.
1859 If ARG is a string, stuff it as keyboard input.
1861 This function is called upon receipt of the signals SIGTERM
1862 or SIGHUP, and upon SIGINT in batch mode.
1864 The value of `kill-emacs-hook', if not void,
1865 is a list of functions (of no args),
1866 all of which are called before Emacs is actually killed. */)
1869 struct gcpro gcpro1
;
1877 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1879 waiting_for_input
= 0;
1880 Frun_hooks (1, &Qkill_emacs_hook
);
1883 #ifdef HAVE_X_WINDOWS
1884 /* Transfer any clipboards we own to the clipboard manager. */
1885 x_clipboard_manager_save_all ();
1888 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1891 ns_release_autorelease_pool (ns_pool
);
1894 /* If we have an auto-save list file,
1895 kill it because we are exiting Emacs deliberately (not crashing).
1896 Do it after shut_down_emacs, which does an auto-save. */
1897 if (STRINGP (Vauto_save_list_file_name
))
1899 Lisp_Object listfile
;
1900 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1901 unlink (SSDATA (listfile
));
1905 exit_code
= (XINT (arg
) < 0
1906 ? XINT (arg
) | INT_MIN
1907 : XINT (arg
) & INT_MAX
);
1909 exit_code
= EXIT_SUCCESS
;
1914 /* Perform an orderly shutdown of Emacs. Autosave any modified
1915 buffers, kill any child processes, clean up the terminal modes (if
1916 we're in the foreground), and other stuff like that. Don't perform
1917 any redisplay; this may be called when Emacs is shutting down in
1918 the background, or after its X connection has died.
1920 If SIG is a signal number, print a message for it.
1922 This is called by fatal signal handlers, X protocol error handlers,
1926 shut_down_emacs (int sig
, Lisp_Object stuff
)
1928 /* Prevent running of hooks from now on. */
1931 /* Don't update display from now on. */
1932 Vinhibit_redisplay
= Qt
;
1934 /* If we are controlling the terminal, reset terminal modes. */
1937 pid_t pgrp
= getpgrp ();
1938 pid_t tpgrp
= tcgetpgrp (0);
1939 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1941 reset_all_sys_modes ();
1942 if (sig
&& sig
!= SIGTERM
)
1944 static char const format
[] = "Fatal error %d: ";
1945 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1946 int buflen
= sprintf (buf
, format
, sig
);
1947 char const *sig_desc
= safe_strsignal (sig
);
1948 emacs_write (STDERR_FILENO
, buf
, buflen
);
1949 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1955 reset_all_sys_modes ();
1958 stuff_buffered_input (stuff
);
1960 inhibit_sentinels
= 1;
1961 kill_buffer_processes (Qnil
);
1962 Fdo_auto_save (Qt
, Qnil
);
1964 #ifdef CLASH_DETECTION
1965 unlock_all_files ();
1968 /* There is a tendency for a SIGIO signal to arrive within exit,
1969 and cause a SIGHUP because the input descriptor is already closed. */
1973 /* Do this only if terminating normally, we want glyph matrices
1974 etc. in a core dump. */
1975 if (sig
== 0 || sig
== SIGTERM
)
1977 check_glyph_memory ();
1978 check_message_stack ();
1986 ns_term_shutdown (sig
);
1990 xml_cleanup_parser ();
2004 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2005 doc
: /* Dump current state of Emacs into executable file FILENAME.
2006 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2007 This is used in the file `loadup.el' when building Emacs.
2009 You must run Emacs in batch mode in order to dump it. */)
2010 (Lisp_Object filename
, Lisp_Object symfile
)
2014 ptrdiff_t count
= SPECPDL_INDEX ();
2018 if (! noninteractive
)
2019 error ("Dumping Emacs works only in batch mode");
2023 /* Warn if the gap between BSS end and heap start is larger than this. */
2024 # define MAX_HEAP_BSS_DIFF (1024*1024)
2026 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2028 fprintf (stderr
, "**************************************************\n");
2029 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2030 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2032 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2033 fprintf (stderr
, "fail because of this. See the section about\n");
2034 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2035 fprintf (stderr
, "**************************************************\n");
2037 #endif /* GNU_LINUX */
2039 /* Bind `command-line-processed' to nil before dumping,
2040 so that the dumped Emacs will process its command line
2041 and set up to work with X windows if appropriate. */
2042 symbol
= intern ("command-line-processed");
2043 specbind (symbol
, Qnil
);
2045 CHECK_STRING (filename
);
2046 filename
= Fexpand_file_name (filename
, Qnil
);
2047 if (!NILP (symfile
))
2049 CHECK_STRING (symfile
);
2050 if (SCHARS (symfile
))
2051 symfile
= Fexpand_file_name (symfile
, Qnil
);
2055 Vpurify_flag
= Qnil
;
2058 set_time_zone_rule (dump_tz
);
2059 #ifndef LOCALTIME_CACHE
2060 /* Force a tz reload, since set_time_zone_rule doesn't. */
2066 /* Tell malloc where start of impure now is. */
2067 /* Also arrange for warnings when nearly out of space. */
2068 #ifndef SYSTEM_MALLOC
2070 /* On Windows, this was done before dumping, and that once suffices.
2071 Meanwhile, my_edata is not valid on Windows. */
2073 extern char my_edata
[];
2074 memory_warnings (my_edata
, malloc_warning
);
2076 #endif /* not WINDOWSNT */
2077 #endif /* not SYSTEM_MALLOC */
2078 #ifdef DOUG_LEA_MALLOC
2079 malloc_state_ptr
= malloc_get_state ();
2082 #ifdef USE_MMAP_FOR_BUFFERS
2085 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2086 #ifdef USE_MMAP_FOR_BUFFERS
2089 #ifdef DOUG_LEA_MALLOC
2090 free (malloc_state_ptr
);
2094 Vlibrary_cache
= Qnil
;
2096 #ifdef HAVE_WINDOW_SYSTEM
2097 reset_image_types ();
2102 return unbind_to (count
, Qnil
);
2105 #endif /* not CANNOT_DUMP */
2108 /* Recover from setlocale (LC_ALL, ""). */
2112 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2113 so that numbers are read and printed properly for Emacs Lisp. */
2114 setlocale (LC_NUMERIC
, "C");
2117 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2120 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2122 if (! EQ (*plocale
, desired_locale
))
2124 *plocale
= desired_locale
;
2125 setlocale (category
, (STRINGP (desired_locale
)
2126 ? SSDATA (desired_locale
)
2131 /* Set system time locale to match Vsystem_time_locale, if possible. */
2133 synchronize_system_time_locale (void)
2135 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2136 Vsystem_time_locale
);
2139 /* Set system messages locale to match Vsystem_messages_locale, if
2142 synchronize_system_messages_locale (void)
2145 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2146 Vsystem_messages_locale
);
2149 #endif /* HAVE_SETLOCALE */
2153 decode_env_path (const char *evarname
, const char *defalt
)
2155 const char *path
, *p
;
2156 Lisp_Object lpath
, element
, tem
;
2159 const char *emacs_dir
= egetenv ("emacs_dir");
2160 static const char *emacs_dir_env
= "%emacs_dir%/";
2161 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2164 /* It's okay to use getenv here, because this function is only used
2165 to initialize variables when Emacs starts up, and isn't called
2168 path
= getenv (evarname
);
2179 /* Ensure values from the environment use the proper directory separator. */
2182 char *path_copy
= alloca (strlen (path
) + 1);
2183 strcpy (path_copy
, path
);
2184 dostounix_filename (path_copy
, 0);
2191 p
= strchr (path
, SEPCHAR
);
2193 p
= path
+ strlen (path
);
2194 element
= (p
- path
? make_string (path
, p
- path
)
2195 : build_string ("."));
2197 /* Relative file names in the default path are interpreted as
2198 being relative to $emacs_dir. */
2199 if (emacs_dir
&& defaulted
2200 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2201 element
= Fexpand_file_name (Fsubstring (element
,
2202 make_number (emacs_dir_len
),
2204 build_string (emacs_dir
));
2207 /* Add /: to the front of the name
2208 if it would otherwise be treated as magic. */
2209 tem
= Ffind_file_name_handler (element
, Qt
);
2211 /* However, if the handler says "I'm safe",
2212 don't bother adding /:. */
2216 prop
= Fget (tem
, intern ("safe-magic"));
2222 element
= concat2 (build_string ("/:"), element
);
2224 lpath
= Fcons (element
, lpath
);
2230 return Fnreverse (lpath
);
2233 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2234 doc
: /* Return non-nil if the current emacs process is a daemon.
2235 If the daemon was given a name argument, return that name. */)
2240 return build_string (daemon_name
);
2247 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2248 doc
: /* Mark the Emacs daemon as being initialized.
2249 This finishes the daemonization process by doing the other half of detaching
2250 from the parent process and its tty file descriptors. */)
2257 error ("This function can only be called if emacs is run as a daemon");
2259 if (daemon_pipe
[1] < 0)
2260 error ("The daemon has already been initialized");
2262 if (NILP (Vafter_init_time
))
2263 error ("This function can only be called after loading the init files");
2265 /* Get rid of stdin, stdout and stderr. */
2266 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2268 err
|= dup2 (nfd
, 0) < 0;
2269 err
|= dup2 (nfd
, 1) < 0;
2270 err
|= dup2 (nfd
, 2) < 0;
2271 err
|= emacs_close (nfd
) != 0;
2273 /* Closing the pipe will notify the parent that it can exit.
2274 FIXME: In case some other process inherited the pipe, closing it here
2275 won't notify the parent because it's still open elsewhere, so we
2276 additionally send a byte, just to make sure the parent really exits.
2277 Instead, we should probably close the pipe in start-process and
2278 call-process to make sure the pipe is never inherited by
2280 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2281 err
|= emacs_close (daemon_pipe
[1]) != 0;
2282 /* Set it to an invalid value so we know we've already run this function. */
2283 daemon_pipe
[1] = -1;
2286 error ("I/O error during daemon initialization");
2291 syms_of_emacs (void)
2293 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2294 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2295 DEFSYM (Qkill_emacs
, "kill-emacs");
2296 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2299 defsubr (&Sdump_emacs
);
2302 defsubr (&Skill_emacs
);
2304 defsubr (&Sinvocation_name
);
2305 defsubr (&Sinvocation_directory
);
2306 defsubr (&Sdaemonp
);
2307 defsubr (&Sdaemon_initialized
);
2309 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2310 doc
: /* Args passed by shell to Emacs, as a list of strings.
2311 Many arguments are deleted from the list as they are processed. */);
2313 DEFVAR_LISP ("system-type", Vsystem_type
,
2314 doc
: /* The value is a symbol indicating the type of operating system you are using.
2316 `gnu' compiled for a GNU Hurd system.
2317 `gnu/linux' compiled for a GNU/Linux system.
2318 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2319 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2320 `ms-dos' compiled as an MS-DOS application.
2321 `windows-nt' compiled as a native W32 application.
2322 `cygwin' compiled using the Cygwin library.
2323 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2324 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2325 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2326 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2328 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2329 doc
: /* Value is string indicating configuration Emacs was built for.
2330 On MS-Windows, the value reflects the OS flavor and version on which
2331 Emacs is running. */);
2332 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2334 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2335 doc
: /* String containing the configuration options Emacs was built with. */);
2336 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2338 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2339 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2341 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2342 doc
: /* Hook run when `kill-emacs' is called.
2343 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2344 in other similar situations), functions placed on this hook should not
2345 expect to be able to interact with the user. To ask for confirmation,
2346 see `kill-emacs-query-functions' instead.
2348 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2349 `noninteractive' was non-nil. */);
2350 Vkill_emacs_hook
= Qnil
;
2352 DEFVAR_LISP ("path-separator", Vpath_separator
,
2353 doc
: /* String containing the character that separates directories in
2354 search paths, such as PATH and other similar environment variables. */);
2357 Vpath_separator
= make_string (&c
, 1);
2360 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2361 doc
: /* The program name that was used to run Emacs.
2362 Any directory names are omitted. */);
2364 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2365 doc
: /* The directory in which the Emacs executable was found, to run it.
2366 The value is nil if that directory's name is not known. */);
2368 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2369 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2370 In an installed Emacs, this is normally nil. It is non-nil if
2371 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2372 within the variable `invocation-directory' or its parent. For example,
2373 this is the case when running an uninstalled Emacs executable from its
2374 build directory. */);
2375 Vinstallation_directory
= Qnil
;
2377 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2378 doc
: /* System locale for messages. */);
2379 Vsystem_messages_locale
= Qnil
;
2381 DEFVAR_LISP ("previous-system-messages-locale",
2382 Vprevious_system_messages_locale
,
2383 doc
: /* Most recently used system locale for messages. */);
2384 Vprevious_system_messages_locale
= Qnil
;
2386 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2387 doc
: /* System locale for time. */);
2388 Vsystem_time_locale
= Qnil
;
2390 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2391 doc
: /* Most recently used system locale for time. */);
2392 Vprevious_system_time_locale
= Qnil
;
2394 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2395 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2396 Vbefore_init_time
= Qnil
;
2398 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2399 doc
: /* Value of `current-time' after loading the init files.
2400 This is nil during initialization. */);
2401 Vafter_init_time
= Qnil
;
2403 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2404 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2405 inhibit_x_resources
= 0;
2407 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2408 doc
: /* Short copyright string for this version of Emacs. */);
2409 Vemacs_copyright
= build_string (emacs_copyright
);
2411 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2412 doc
: /* Version numbers of this version of Emacs. */);
2413 Vemacs_version
= build_string (emacs_version
);
2415 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2416 doc
: /* Alist of dynamic libraries vs external files implementing them.
2417 Each element is a list (LIBRARY FILE...), where the car is a symbol
2418 representing a supported external library, and the rest are strings giving
2419 alternate filenames for that library.
2421 Emacs tries to load the library from the files in the order they appear on
2422 the list; if none is loaded, the running session of Emacs won't have access
2425 Note that image types `pbm' and `xbm' do not need entries in this variable
2426 because they do not depend on external libraries and are always available.
2428 Also note that this is not a generic facility for accessing external
2429 libraries; only those already known by Emacs will be loaded. */);
2430 Vdynamic_library_alist
= Qnil
;
2431 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2434 Vlibrary_cache
= Qnil
;
2435 staticpro (&Vlibrary_cache
);
2438 /* Make sure IS_DAEMON starts up as false. */