1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 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/>. */
26 #include <sys/types.h>
30 #include <close-stream.h>
31 #include <ignore-value.h>
41 #if defined WINDOWSNT || defined HAVE_NTGUI
42 #include "w32select.h"
44 #include "w32common.h"
51 #ifdef HAVE_WINDOW_SYSTEM
53 #endif /* HAVE_WINDOW_SYSTEM */
55 #ifdef NS_IMPL_GNUSTEP
56 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
57 #include <GNUstepBase/GSConfig.h>
61 #include "intervals.h"
62 #include "character.h"
71 #include "blockinput.h"
72 #include "syssignal.h"
75 #include "termhooks.h"
83 #if (defined PROFILING \
84 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
85 # include <sys/gmon.h>
86 extern void moncontrol (int mode
);
95 #include <sys/resource.h>
98 #ifdef HAVE_PERSONALITY_LINUX32
99 #include <sys/personality.h>
102 static const char emacs_version
[] = VERSION
;
103 static const char emacs_copyright
[] = COPYRIGHT
;
105 /* Empty lisp strings. To avoid having to build any others. */
106 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
109 /* Cache for externally loaded libraries. */
110 Lisp_Object Vlibrary_cache
;
113 /* Set after Emacs has started up the first time.
114 Prevents reinitialization of the Lisp world and keymaps
115 on subsequent starts. */
119 extern void unexec_init_emacs_zone (void);
122 #ifdef DOUG_LEA_MALLOC
123 /* Preserves a pointer to the memory allocated that copies that
124 static data inside glibc's malloc. */
125 static void *malloc_state_ptr
;
126 /* From glibc, a routine that returns a copy of the malloc internal state. */
127 extern void *malloc_get_state (void);
128 /* From glibc, a routine that overwrites the malloc internal state. */
129 extern int malloc_set_state (void*);
130 /* True if the MALLOC_CHECK_ environment variable was set while
131 dumping. Used to work around a bug in glibc's malloc. */
132 static bool malloc_using_checking
;
135 Lisp_Object Qfile_name_handler_alist
;
137 Lisp_Object Qrisky_local_variable
;
139 Lisp_Object Qkill_emacs
;
140 static Lisp_Object Qkill_emacs_hook
;
142 /* If true, Emacs should not attempt to use a window-specific code,
143 but instead should use the virtual terminal under which it was started. */
144 bool inhibit_window_system
;
146 /* If true, a filter or a sentinel is running. Tested to save the match
147 data on the first attempt to change it inside asynchronous code. */
148 bool running_asynch_code
;
150 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
151 /* If true, -d was specified, meaning we're using some window system. */
155 /* An address near the bottom of the stack.
156 Tells GC how to save a copy of the stack. */
159 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
160 /* The address where the heap starts (from the first sbrk (0) call). */
161 static void *my_heap_start
;
165 /* The gap between BSS end and heap start as far as we can tell. */
166 static uprintmax_t heap_bss_diff
;
169 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
172 On Cocoa, CoreFoundation lib fails in forked process:
173 http://developer.apple.com/ReleaseNotes/
174 CoreFoundation/CoreFoundation.html)
176 On Windows, a Cygwin fork child cannot access the USER subsystem.
178 We mark being in the exec'd process by a daemon name argument of
179 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
180 NAME is the original daemon name, if any. */
181 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
182 # define DAEMON_MUST_EXEC
185 /* True means running Emacs without interactive terminal. */
188 /* True means remove site-lisp directories from load-path. */
191 /* Name for the server started by the daemon.*/
192 static char *daemon_name
;
194 /* Pipe used to send exit notification to the daemon parent at
198 /* Save argv and argc. */
202 static void sort_args (int argc
, char **argv
);
203 static void syms_of_emacs (void);
205 /* MSVC needs each string be shorter than 2048 bytes, so the usage
206 strings below are split to not overflow this limit. */
208 Usage: %s [OPTION-OR-FILENAME]...\n\
210 Run Emacs, the extensible, customizable, self-documenting real-time\n\
211 display editor. The recommended way to start Emacs for normal editing\n\
212 is with no options at all.\n\
214 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
215 read the main documentation for these command-line arguments.\n\
217 Initialization options:\n\
219 --batch do not do interactive display; implies -q\n\
220 --chdir DIR change to directory DIR\n\
221 --daemon start a server in the background\n\
222 --debug-init enable Emacs Lisp debugger for init file\n\
223 --display, -d DISPLAY use X server DISPLAY\n\
224 --no-desktop do not load a saved desktop\n\
225 --no-init-file, -q load neither ~/.emacs nor default.el\n\
226 --no-shared-memory, -nl do not use shared memory\n\
227 --no-site-file do not load site-start.el\n\
228 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
229 --no-splash do not display a splash screen on startup\n\
230 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
231 --quick, -Q equivalent to:\n\
232 -q --no-site-file --no-site-lisp --no-splash\n\
233 --script FILE run FILE as an Emacs Lisp script\n\
234 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
235 --user, -u USER load ~USER/.emacs instead of your own\n\
241 FILE visit FILE using find-file\n\
242 +LINE go to line LINE in next FILE\n\
243 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
244 --directory, -L DIR add DIR to variable load-path\n\
245 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
246 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
247 --file FILE visit FILE using find-file\n\
248 --find-file FILE visit FILE using find-file\n\
249 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
250 --insert FILE insert contents of FILE into current buffer\n\
251 --kill exit without asking for confirmation\n\
252 --load, -l FILE load Emacs Lisp FILE using the load function\n\
253 --visit FILE visit FILE using find-file\n\
259 --background-color, -bg COLOR window background color\n\
260 --basic-display, -D disable many display features;\n\
261 used for debugging Emacs\n\
262 --border-color, -bd COLOR main border color\n\
263 --border-width, -bw WIDTH width of main border\n\
264 --color, --color=MODE override color mode for character terminals;\n\
265 MODE defaults to `auto', and\n\
266 can also be `never', `always',\n\
267 or a mode name like `ansi8'\n\
268 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
269 --font, -fn FONT default font; must be fixed-width\n\
270 --foreground-color, -fg COLOR window foreground color\n\
271 --fullheight, -fh make the first frame high as the screen\n\
272 --fullscreen, -fs make the first frame fullscreen\n\
273 --fullwidth, -fw make the first frame wide as the screen\n\
274 --maximized, -mm make the first frame maximized\n\
275 --geometry, -g GEOMETRY window geometry\n\
276 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
277 --iconic start Emacs in iconified state\n\
278 --internal-border, -ib WIDTH width between text and main border\n\
279 --line-spacing, -lsp PIXELS additional space to put between lines\n\
280 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
281 --name NAME title for initial Emacs frame\n\
282 --no-blinking-cursor, -nbc disable blinking cursor\n\
283 --reverse-video, -r, -rv switch foreground and background\n\
284 --title, -T TITLE title for initial Emacs frame\n\
285 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
286 --xrm XRESOURCES set additional X resources\n\
287 --parent-id XID set parent window\n\
288 --help display this help and exit\n\
289 --version output version information and exit\n\
293 You can generally also specify long option names with a single -; for\n\
294 example, -batch as well as --batch. You can use any unambiguous\n\
295 abbreviation for a --option.\n\
297 Various environment variables and window system resources also affect\n\
298 Emacs' operation. See the main documentation.\n\
300 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
301 section of the Emacs manual or the file BUGS.\n"
304 /* True if handling a fatal error already. */
305 bool fatal_error_in_progress
;
308 /* NS autrelease pool, for memory management. */
309 static void *ns_pool
;
314 /* Report a fatal error due to signal SIG, output a backtrace of at
315 most BACKTRACE_LIMIT lines, and exit. */
317 terminate_due_to_signal (int sig
, int backtrace_limit
)
319 signal (sig
, SIG_DFL
);
320 totally_unblock_input ();
322 /* If fatal error occurs in code below, avoid infinite recursion. */
323 if (! fatal_error_in_progress
)
325 fatal_error_in_progress
= 1;
327 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
328 Fkill_emacs (make_number (sig
));
330 shut_down_emacs (sig
, Qnil
);
331 emacs_backtrace (backtrace_limit
);
334 /* Signal the same code; this time it will really be fatal.
335 Since we're in a signal handler, the signal is blocked, so we
336 have to unblock it if we want to really receive it. */
340 sigemptyset (&unblocked
);
341 sigaddset (&unblocked
, sig
);
342 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
348 /* This shouldn't be executed, but it prevents a warning. */
352 /* Code for dealing with Lisp access to the Unix command line. */
355 init_cmdargs (int argc
, char **argv
, int skip_args
)
358 Lisp_Object name
, dir
, handler
;
359 ptrdiff_t count
= SPECPDL_INDEX ();
360 Lisp_Object raw_name
;
365 raw_name
= build_string (argv
[0]);
367 /* Add /: to the front of the name
368 if it would otherwise be treated as magic. */
369 handler
= Ffind_file_name_handler (raw_name
, Qt
);
370 if (! NILP (handler
))
371 raw_name
= concat2 (build_string ("/:"), raw_name
);
373 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
374 Vinvocation_directory
= Ffile_name_directory (raw_name
);
376 /* If we got no directory in argv[0], search PATH to find where
377 Emacs actually came from. */
378 if (NILP (Vinvocation_directory
))
381 int yes
= openp (Vexec_path
, Vinvocation_name
,
382 Vexec_suffixes
, &found
, make_number (X_OK
));
385 /* Add /: to the front of the name
386 if it would otherwise be treated as magic. */
387 handler
= Ffind_file_name_handler (found
, Qt
);
388 if (! NILP (handler
))
389 found
= concat2 (build_string ("/:"), found
);
390 Vinvocation_directory
= Ffile_name_directory (found
);
394 if (!NILP (Vinvocation_directory
)
395 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
396 /* Emacs was started with relative path, like ./emacs.
398 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
400 Vinstallation_directory
= Qnil
;
402 if (!NILP (Vinvocation_directory
))
404 dir
= Vinvocation_directory
;
406 /* If we are running from the build directory, set DIR to the
407 src subdirectory of the Emacs tree, like on Posix
409 if (SBYTES (dir
) > sizeof ("/i386/") - 1
410 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
412 dir
= Fexpand_file_name (build_string ("../.."), dir
);
413 #else /* !WINDOWSNT */
415 name
= Fexpand_file_name (Vinvocation_name
, dir
);
418 Lisp_Object tem
, lib_src_exists
;
419 Lisp_Object etc_exists
, info_exists
;
421 /* See if dir contains subdirs for use by Emacs.
422 Check for the ones that would exist in a build directory,
423 not including lisp and info. */
424 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
425 lib_src_exists
= Ffile_exists_p (tem
);
428 /* MSDOS installations frequently remove lib-src, but we still
429 must set installation-directory, or else info won't find
430 its files (it uses the value of installation-directory). */
431 tem
= Fexpand_file_name (build_string ("info"), dir
);
432 info_exists
= Ffile_exists_p (tem
);
437 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
439 tem
= Fexpand_file_name (build_string ("etc"), dir
);
440 etc_exists
= Ffile_exists_p (tem
);
441 if (!NILP (etc_exists
))
443 Vinstallation_directory
444 = Ffile_name_as_directory (dir
);
449 /* See if dir's parent contains those subdirs. */
450 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
451 lib_src_exists
= Ffile_exists_p (tem
);
455 /* See the MSDOS commentary above. */
456 tem
= Fexpand_file_name (build_string ("../info"), dir
);
457 info_exists
= Ffile_exists_p (tem
);
462 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
464 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
465 etc_exists
= Ffile_exists_p (tem
);
466 if (!NILP (etc_exists
))
468 tem
= Fexpand_file_name (build_string (".."), dir
);
469 Vinstallation_directory
470 = Ffile_name_as_directory (tem
);
475 /* If the Emacs executable is actually a link,
476 next try the dir that the link points into. */
477 tem
= Ffile_symlink_p (name
);
480 name
= Fexpand_file_name (tem
, dir
);
481 dir
= Ffile_name_directory (name
);
488 Vcommand_line_args
= Qnil
;
490 for (i
= argc
- 1; i
>= 0; i
--)
492 if (i
== 0 || i
> skip_args
)
493 /* For the moment, we keep arguments as is in unibyte strings.
494 They are decoded in the function command-line after we know
495 locale-coding-system. */
497 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
501 unbind_to (count
, Qnil
);
504 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
505 doc
: /* Return the program name that was used to run Emacs.
506 Any directory names are omitted. */)
509 return Fcopy_sequence (Vinvocation_name
);
512 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
514 doc
: /* Return the directory name in which the Emacs executable was located. */)
517 return Fcopy_sequence (Vinvocation_directory
);
522 /* A valid but unlikely value for the TZ environment value.
523 It is OK (though a bit slower) if the user actually chooses this value. */
524 static char const dump_tz
[] = "UtC0";
527 /* Test whether the next argument in ARGV matches SSTR or a prefix of
528 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
529 (the argument is supposed to have a value) store in *VALPTR either
530 the next argument or the portion of this one after the equal sign.
531 ARGV is read starting at position *SKIPPTR; this index is advanced
532 by the number of arguments used.
534 Too bad we can't just use getopt for all of this, but we don't have
535 enough information to do it right. */
538 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
539 int minlen
, char **valptr
, int *skipptr
)
545 /* Don't access argv[argc]; give up in advance. */
546 if (argc
<= *skipptr
+ 1)
549 arg
= argv
[*skipptr
+1];
552 if (strcmp (arg
, sstr
) == 0)
556 *valptr
= argv
[*skipptr
+2];
563 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
564 ? p
- arg
: strlen (arg
));
565 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
567 else if (valptr
== NULL
)
578 else if (argv
[*skipptr
+2] != NULL
)
580 *valptr
= argv
[*skipptr
+2];
590 #ifdef DOUG_LEA_MALLOC
592 /* malloc can be invoked even before main (e.g. by the dynamic
593 linker), so the dumped malloc state must be restored as early as
594 possible using this special hook. */
597 malloc_initialize_hook (void)
601 if (!malloc_using_checking
)
602 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
603 ignored if the heap to be restored was constructed without
604 malloc checking. Can't use unsetenv, since that calls malloc. */
608 for (p
= environ
; p
&& *p
; p
++)
609 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
618 malloc_set_state (malloc_state_ptr
);
619 #ifndef XMALLOC_OVERRUN_CHECK
620 free (malloc_state_ptr
);
625 if (my_heap_start
== 0)
626 my_heap_start
= sbrk (0);
627 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
631 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
633 #endif /* DOUG_LEA_MALLOC */
635 /* Close standard output and standard error, reporting any write
636 errors as best we can. This is intended for use with atexit. */
638 close_output_streams (void)
640 if (close_stream (stdout
) != 0)
642 fprintf (stderr
, "Write error to standard output: %s\n",
645 _exit (EXIT_FAILURE
);
648 if (close_stream (stderr
) != 0)
649 _exit (EXIT_FAILURE
);
654 main (int argc
, char **argv
)
659 char stack_bottom_variable
;
660 bool do_initial_setlocale
;
663 #ifdef HAVE_SETRLIMIT
669 #ifdef DAEMON_MUST_EXEC
678 #ifdef G_SLICE_ALWAYS_MALLOC
679 /* This is used by the Cygwin build. */
680 xputenv ("G_SLICE=always-malloc");
686 extern char my_endbss
[];
687 extern char *my_endbss_static
;
689 if (my_heap_start
== 0)
690 my_heap_start
= sbrk (0);
692 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
696 #if defined WINDOWSNT || defined HAVE_NTGUI
697 /* Set global variables used to detect Windows version. Do this as
698 early as possible. (unexw32.c calls this function as well, but
699 the additional call here is harmless.) */
700 cache_system_info ();
703 #ifdef RUN_TIME_REMAP
705 run_time_remap (argv
[0]);
708 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
711 unexec_init_emacs_zone ();
714 atexit (close_output_streams
);
716 sort_args (argc
, argv
);
718 while (argv
[argc
]) argc
++;
720 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
722 const char *version
, *copyright
;
725 Lisp_Object tem
, tem2
;
726 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
727 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
730 fprintf (stderr
, "Invalid value of `emacs-version'\n");
735 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
740 version
= SSDATA (tem
);
741 copyright
= SSDATA (tem2
);
746 version
= emacs_version
;
747 copyright
= emacs_copyright
;
749 printf ("GNU Emacs %s\n", version
);
750 printf ("%s\n", copyright
);
751 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
752 printf ("You may redistribute copies of Emacs\n");
753 printf ("under the terms of the GNU General Public License.\n");
754 printf ("For more information about these matters, ");
755 printf ("see the file named COPYING.\n");
759 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
760 if (chdir (ch_to_dir
) == -1)
762 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
763 argv
[0], ch_to_dir
, strerror (errno
));
767 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
768 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
770 #ifdef HAVE_PERSONALITY_LINUX32
771 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
773 /* Set this so we only do this once. */
774 xputenv ("EMACS_HEAP_EXEC=true");
776 /* A flag to turn off address randomization which is introduced
777 in linux kernel shipped with fedora core 4 */
778 #define ADD_NO_RANDOMIZE 0x0040000
779 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
780 #undef ADD_NO_RANDOMIZE
782 execvp (argv
[0], argv
);
784 /* If the exec fails, try to dump anyway. */
787 #endif /* HAVE_PERSONALITY_LINUX32 */
789 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
790 /* Extend the stack space available.
791 Don't do that if dumping, since some systems (e.g. DJGPP)
792 might define a smaller stack limit at that time. */
795 && (!noninteractive
|| initialized
)
797 && !getrlimit (RLIMIT_STACK
, &rlim
))
800 extern size_t re_max_failures
;
801 /* Approximate the amount regex.c needs per unit of re_max_failures. */
802 int ratio
= 20 * sizeof (char *);
803 /* Then add 33% to cover the size of the smaller stacks that regex.c
804 successively allocates and discards, on its way to the maximum. */
806 /* Add in some extra to cover
807 what we're likely to use for other reasons. */
808 newlim
= re_max_failures
* ratio
+ 200000;
810 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
811 stack allocation routine for new process that the allocation
812 fails if stack limit is not on page boundary. So, round up the
813 new limit to page boundary. */
814 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
816 if (newlim
> rlim
.rlim_max
)
818 newlim
= rlim
.rlim_max
;
819 /* Don't let regex.c overflow the stack we have. */
820 re_max_failures
= (newlim
- 200000) / ratio
;
822 if (rlim
.rlim_cur
< newlim
)
823 rlim
.rlim_cur
= newlim
;
825 setrlimit (RLIMIT_STACK
, &rlim
);
827 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
829 /* Record (approximately) where the stack begins. */
830 stack_bottom
= &stack_bottom_variable
;
834 #ifndef SYSTEM_MALLOC
835 /* Arrange to get warning messages as memory fills up. */
836 memory_warnings (0, malloc_warning
);
838 /* Call malloc at least once, to run malloc_initialize_hook.
839 Also call realloc and free for consistency. */
840 free (realloc (malloc (4), 4));
842 #endif /* not SYSTEM_MALLOC */
844 #if defined (MSDOS) || defined (WINDOWSNT)
845 /* We do all file input/output as binary files. When we need to translate
846 newlines, we do that manually. */
848 #endif /* MSDOS || WINDOWSNT */
851 if (!isatty (fileno (stdin
)))
852 setmode (fileno (stdin
), O_BINARY
);
853 if (!isatty (fileno (stdout
)))
856 setmode (fileno (stdout
), O_BINARY
);
860 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
861 The build procedure uses this while dumping, to ensure that the
862 dumped Emacs does not have its system locale tables initialized,
863 as that might cause screwups when the dumped Emacs starts up. */
865 char *lc_all
= getenv ("LC_ALL");
866 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
869 /* Set locale now, so that initial error messages are localized properly.
870 fixup_locale must wait until later, since it builds strings. */
871 if (do_initial_setlocale
)
872 setlocale (LC_ALL
, "");
874 inhibit_window_system
= 0;
876 /* Handle the -t switch, which specifies filename to use as terminal. */
880 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
885 result
= emacs_open (term
, O_RDWR
, 0);
886 if (result
< 0 || dup (0) < 0)
888 char *errstring
= strerror (errno
);
889 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
894 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
897 fprintf (stderr
, "Using %s\n", term
);
898 #ifdef HAVE_WINDOW_SYSTEM
899 inhibit_window_system
= 1; /* -t => -nw */
906 /* Command line option --no-windows is deprecated and thus not mentioned
907 in the manual and usage information. */
908 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
909 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
910 inhibit_window_system
= 1;
912 /* Handle the -batch switch, which means don't do interactive display. */
914 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
917 Vundo_outer_limit
= Qnil
;
919 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
921 noninteractive
= 1; /* Set batch mode. */
922 /* Convert --script to -scriptload, un-skip it, and sort again
923 so that it will be handled in proper sequence. */
924 /* FIXME broken for --script=FILE - is that supposed to work? */
925 argv
[skip_args
- 1] = (char *) "-scriptload";
927 sort_args (argc
, argv
);
930 /* Handle the --help option, which gives a usage message. */
931 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
933 printf (USAGE1
, argv
[0], USAGE2
);
939 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
940 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
945 /* Start as a daemon: fork a new child process which will run the
946 rest of the initialization code, then exit.
948 Detaching a daemon requires the following steps:
952 - close the tty file-descriptors
954 We only want to do the last 2 steps once the daemon is ready to
955 serve requests, i.e. after loading .emacs (initialization).
956 OTOH initialization may start subprocesses (e.g. ispell) and these
957 should be run from the proper process (the one that will end up
958 running as daemon) and with the proper "session id" in order for
959 them to keep working after detaching, so fork and setsid need to be
960 performed before initialization.
962 We want to avoid exiting before the server socket is ready, so
963 use a pipe for synchronization. The parent waits for the child
964 to close its end of the pipe (using `daemon-initialized')
966 if (pipe (daemon_pipe
) == -1)
968 fprintf (stderr
, "Cannot pipe!\n");
972 #ifndef DAEMON_MUST_EXEC
974 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
975 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
976 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
979 #else /* DAEMON_MUST_EXEC */
980 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
981 f
= fork (); /* in orig */
983 f
= 0; /* in exec'd */
984 #endif /* !DAEMON_MUST_EXEC */
990 /* Close unused writing end of the pipe. */
991 close (daemon_pipe
[1]);
993 /* Just wait for the child to close its end of the pipe. */
996 retval
= read (daemon_pipe
[0], &buf
, 1);
998 while (retval
== -1 && errno
== EINTR
);
1002 fprintf (stderr
, "Error reading status from child\n");
1005 else if (retval
== 0)
1007 fprintf (stderr
, "Error: server did not start correctly\n");
1011 close (daemon_pipe
[0]);
1016 fprintf (stderr
, "Cannot fork!\n");
1020 #ifdef DAEMON_MUST_EXEC
1022 /* In orig process, forked as child, OR in exec'd. */
1023 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1024 { /* In orig, child: now exec w/special daemon name. */
1027 snprintf (fdStr
, sizeof fdStr
,
1028 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1029 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1031 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1033 fprintf (stderr
, "daemon: child name too long\n");
1037 argv
[skip_args
] = fdStr
;
1039 execvp (argv
[0], argv
);
1040 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1044 /* In exec'd: parse special dname into pipe and name info. */
1045 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1046 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1048 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1051 dname_arg2
[0] = '\0';
1052 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1054 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1056 #endif /* DAEMON_MUST_EXEC */
1059 daemon_name
= xstrdup (dname_arg
);
1060 /* Close unused reading end of the pipe. */
1061 close (daemon_pipe
[0]);
1062 /* Make sure that the used end of the pipe is closed on exec, so
1063 that it is not accessible to programs started from .emacs. */
1064 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1068 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1073 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1074 if (! noninteractive
)
1076 extern void malloc_enable_thread (void);
1078 malloc_enable_thread ();
1082 init_signals (dumping
);
1084 noninteractive1
= noninteractive
;
1086 /* Perform basic initializations (not merely interning symbols). */
1093 init_charset_once ();
1094 init_coding_once ();
1095 init_syntax_once (); /* Create standard syntax table. */
1096 init_category_once (); /* Create standard category table. */
1097 /* Must be done before init_buffer. */
1098 init_casetab_once ();
1099 init_buffer_once (); /* Create buffer table and some buffers. */
1100 init_minibuf_once (); /* Create list of minibuffers. */
1101 /* Must precede init_window_once. */
1103 /* Call syms_of_xfaces before init_window_once because that
1104 function creates Vterminal_frame. Termcap frames now use
1105 faces, and the face implementation uses some symbols as
1108 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1109 be better to arrange things not to have this dependency. */
1111 /* Call syms_of_keyboard before init_window_once because
1112 keyboard sets up symbols that include some face names that
1113 the X support will want to use. This can happen when
1114 CANNOT_DUMP is defined. */
1115 syms_of_keyboard ();
1117 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1119 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1121 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1123 /* Before syms_of_coding because it initializes Qcharsetp. */
1125 /* Before init_window_once, because it sets up the
1126 Vcoding_system_hash_table. */
1127 syms_of_coding (); /* This should be after syms_of_fileio. */
1129 init_window_once (); /* Init the window system. */
1130 #ifdef HAVE_WINDOW_SYSTEM
1131 init_fringe_once (); /* Swap bitmaps if necessary. */
1132 #endif /* HAVE_WINDOW_SYSTEM */
1137 if (do_initial_setlocale
)
1140 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1141 Vsystem_time_locale
= Vprevious_system_time_locale
;
1146 running_asynch_code
= 0;
1150 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1153 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1156 ns_pool
= ns_alloc_autorelease_pool ();
1157 if (!noninteractive
)
1159 #ifdef NS_IMPL_COCOA
1160 if (skip_args
< argc
)
1162 /* FIXME: Do the right thing if getenv returns NULL, or if
1164 if (!strncmp (argv
[skip_args
], "-psn", 4))
1167 chdir (getenv ("HOME"));
1169 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1172 chdir (getenv ("HOME"));
1177 #endif /* HAVE_NS */
1179 #ifdef HAVE_X_WINDOWS
1180 /* Stupid kludge to catch command-line display spec. We can't
1181 handle this argument entirely in window system dependent code
1182 because we don't even know which window system dependent code
1183 to run until we've recognized this argument. */
1185 char *displayname
= 0;
1186 int count_before
= skip_args
;
1188 /* Skip any number of -d options, but only use the last one. */
1191 int count_before_this
= skip_args
;
1193 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1195 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1200 count_before
= count_before_this
;
1203 /* If we have the form --display=NAME,
1204 convert it into -d name.
1205 This requires inserting a new element into argv. */
1206 if (displayname
&& count_before
< skip_args
)
1208 if (skip_args
== count_before
+ 1)
1210 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1211 (argc
- (count_before
+ 2)) * sizeof *argv
);
1212 argv
[count_before
+ 2] = displayname
;
1215 argv
[count_before
+ 1] = (char *) "-d";
1220 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1221 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1225 /* Don't actually discard this arg. */
1226 skip_args
= count_before
;
1228 #else /* !HAVE_X_WINDOWS */
1231 int count_before
= skip_args
;
1233 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1234 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1237 skip_args
= count_before
;
1241 /* argmatch must not be used after here,
1242 except when building temacs
1243 because the -d argument has not been skipped in skip_args. */
1246 /* Call early 'cause init_environment needs it. */
1248 /* Set defaults for several environment variables. */
1250 init_environment (argc
, argv
, skip_args
);
1257 globals_of_w32notify ();
1258 /* Initialize environment from registry settings. */
1259 init_environment (argv
);
1260 init_ntproc (dumping
); /* must precede init_editfns. */
1263 /* Initialize and GC-protect Vinitial_environment and
1264 Vprocess_environment before set_initial_environment fills them
1267 syms_of_callproc ();
1268 /* egetenv is a pretty low-level facility, which may get called in
1269 many circumstances; it seems flimsy to put off initializing it
1270 until calling init_callproc. Do not do it when dumping. */
1272 set_initial_environment ();
1274 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1275 if this is not done. Do it after set_global_environment so that we
1276 don't pollute Vglobal_environment. */
1277 /* Setting LANG here will defeat the startup locale processing... */
1282 init_buffer (); /* Init default directory of main buffer. */
1284 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1285 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1289 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1290 Lisp_Object old_log_max
;
1291 old_log_max
= Vmessage_log_max
;
1292 XSETFASTINT (Vmessage_log_max
, 0);
1293 message_dolog ("", 0, 1, 0);
1294 Vmessage_log_max
= old_log_max
;
1297 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1301 /* Check to see if Emacs has been installed correctly. */
1302 check_windows_init_file ();
1305 /* Intern the names of all standard functions and variables;
1306 define standard keys. */
1310 /* The basic levels of Lisp must come first. Note that
1311 syms_of_data and some others have already been called. */
1316 syms_of_floatfns ();
1319 syms_of_bytecode ();
1321 syms_of_casefiddle ();
1323 syms_of_category ();
1325 syms_of_character ();
1332 syms_of_filelock ();
1335 /* syms_of_keymap (); */
1343 syms_of_terminal ();
1349 syms_of_textprop ();
1350 syms_of_composite ();
1353 #endif /* WINDOWSNT */
1360 #ifdef HAVE_WINDOW_SYSTEM
1363 #endif /* HAVE_WINDOW_SYSTEM */
1364 #ifdef HAVE_X_WINDOWS
1369 #ifdef HAVE_XWIDGETS
1372 syms_of_xsettings ();
1379 #endif /* HAVE_X_WINDOWS */
1392 #endif /* HAVE_NTGUI */
1394 #if defined WINDOWSNT || defined HAVE_NTGUI
1395 syms_of_w32select ();
1402 syms_of_win16select ();
1409 syms_of_nsselect ();
1411 #endif /* HAVE_NS */
1419 #endif /* HAVE_INOTIFY */
1422 syms_of_dbusbind ();
1423 #endif /* HAVE_DBUS */
1427 syms_of_w32notify ();
1428 #endif /* WINDOWSNT */
1430 syms_of_profiler ();
1432 keys_of_casefiddle ();
1435 keys_of_keyboard ();
1441 /* Initialization that must be done even if the global variable
1442 initialized is non zero. */
1444 globals_of_w32font ();
1445 globals_of_w32fns ();
1446 globals_of_w32menu ();
1447 #endif /* HAVE_NTGUI */
1449 #if defined WINDOWSNT || defined HAVE_NTGUI
1450 globals_of_w32select ();
1456 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1457 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1458 init_keyboard (); /* This too must precede init_sys_modes. */
1459 if (!noninteractive
)
1460 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1462 #ifdef HAVE_WINDOW_SYSTEM
1464 #endif /* HAVE_WINDOW_SYSTEM */
1472 /* Handle -l loadup, args passed by Makefile. */
1473 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1474 Vtop_level
= Fcons (intern_c_string ("load"),
1475 Fcons (build_string (file
), Qnil
));
1476 /* Unless next switch is -nl, load "loadup.el" first thing. */
1478 Vtop_level
= Fcons (intern_c_string ("load"),
1479 Fcons (build_string ("loadup.el"), Qnil
));
1486 /* If the execution TZ happens to be the same as the dump TZ,
1487 change it to some other value and then change it back,
1488 to force the underlying implementation to reload the TZ info.
1489 This is needed on implementations that load TZ info from files,
1490 since the TZ file contents may differ between dump and execution. */
1491 char *tz
= getenv ("TZ");
1492 if (tz
&& !strcmp (tz
, dump_tz
))
1502 /* Set up for profiling. This is known to work on FreeBSD,
1503 GNU/Linux and MinGW. It might work on some other systems too.
1504 Give it a try and tell us if it works on your system. To compile
1505 for profiling, use the configure option --enable-profiling. */
1506 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1511 extern unsigned char etext
asm ("etext");
1517 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1526 #ifdef LOCALTIME_CACHE
1527 /* Some versions of localtime have a bug. They cache the value of the time
1528 zone rather than looking it up every time. Since localtime() is
1529 called to bolt the undumping time into the undumped emacs, this
1530 results in localtime ignoring the TZ environment variable.
1531 This flushes the new TZ value into localtime. */
1533 #endif /* defined (LOCALTIME_CACHE) */
1535 /* Enter editor command loop. This never returns. */
1541 /* Sort the args so we can find the most important ones
1542 at the beginning of argv. */
1544 /* First, here's a table of all the standard options. */
1546 struct standard_args
1549 const char *longname
;
1554 static const struct standard_args standard_args
[] =
1556 { "-version", "--version", 150, 0 },
1557 { "-chdir", "--chdir", 130, 1 },
1558 { "-t", "--terminal", 120, 1 },
1559 { "-nw", "--no-window-system", 110, 0 },
1560 { "-nw", "--no-windows", 110, 0 },
1561 { "-batch", "--batch", 100, 0 },
1562 { "-script", "--script", 100, 1 },
1563 { "-daemon", "--daemon", 99, 0 },
1564 { "-help", "--help", 90, 0 },
1565 { "-nl", "--no-loadup", 70, 0 },
1566 { "-nsl", "--no-site-lisp", 65, 0 },
1567 /* -d must come last before the options handled in startup.el. */
1568 { "-d", "--display", 60, 1 },
1569 { "-display", 0, 60, 1 },
1570 /* Now for the options handled in `command-line' (startup.el). */
1571 /* (Note that to imply -nsl, -Q is partially handled here.) */
1572 { "-Q", "--quick", 55, 0 },
1573 { "-quick", 0, 55, 0 },
1574 { "-q", "--no-init-file", 50, 0 },
1575 { "-no-init-file", 0, 50, 0 },
1576 { "-no-site-file", "--no-site-file", 40, 0 },
1577 { "-u", "--user", 30, 1 },
1578 { "-user", 0, 30, 1 },
1579 { "-debug-init", "--debug-init", 20, 0 },
1580 { "-iconic", "--iconic", 15, 0 },
1581 { "-D", "--basic-display", 12, 0},
1582 { "-basic-display", 0, 12, 0},
1583 { "-nbc", "--no-blinking-cursor", 12, 0 },
1584 /* Now for the options handled in `command-line-1' (startup.el). */
1585 { "-nbi", "--no-bitmap-icon", 10, 0 },
1586 { "-bg", "--background-color", 10, 1 },
1587 { "-background", 0, 10, 1 },
1588 { "-fg", "--foreground-color", 10, 1 },
1589 { "-foreground", 0, 10, 1 },
1590 { "-bd", "--border-color", 10, 1 },
1591 { "-bw", "--border-width", 10, 1 },
1592 { "-ib", "--internal-border", 10, 1 },
1593 { "-ms", "--mouse-color", 10, 1 },
1594 { "-cr", "--cursor-color", 10, 1 },
1595 { "-fn", "--font", 10, 1 },
1596 { "-font", 0, 10, 1 },
1597 { "-fs", "--fullscreen", 10, 0 },
1598 { "-fw", "--fullwidth", 10, 0 },
1599 { "-fh", "--fullheight", 10, 0 },
1600 { "-mm", "--maximized", 10, 0 },
1601 { "-g", "--geometry", 10, 1 },
1602 { "-geometry", 0, 10, 1 },
1603 { "-T", "--title", 10, 1 },
1604 { "-title", 0, 10, 1 },
1605 { "-name", "--name", 10, 1 },
1606 { "-xrm", "--xrm", 10, 1 },
1607 { "-parent-id", "--parent-id", 10, 1 },
1608 { "-r", "--reverse-video", 5, 0 },
1610 { "-reverse", 0, 5, 0 },
1611 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1612 { "-vb", "--vertical-scroll-bars", 5, 0 },
1613 { "-color", "--color", 5, 0},
1614 { "-no-splash", "--no-splash", 3, 0 },
1615 { "-no-desktop", "--no-desktop", 3, 0 },
1617 { "-NSAutoLaunch", 0, 5, 1 },
1618 { "-NXAutoLaunch", 0, 5, 1 },
1619 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1620 { "-_NSMachLaunch", 0, 85, 1 },
1621 { "-MachLaunch", 0, 85, 1 },
1622 { "-macosx", 0, 85, 0 },
1623 { "-NSHost", 0, 85, 1 },
1625 /* These have the same priority as ordinary file name args,
1626 so they are not reordered with respect to those. */
1627 { "-L", "--directory", 0, 1 },
1628 { "-directory", 0, 0, 1 },
1629 { "-l", "--load", 0, 1 },
1630 { "-load", 0, 0, 1 },
1631 /* This has no longname, because using --scriptload confuses sort_args,
1632 because then the --script long option seems to match twice; ie
1633 you can't have a long option which is a prefix of another long
1634 option. In any case, this is entirely an internal option. */
1635 { "-scriptload", NULL
, 0, 1 },
1636 { "-f", "--funcall", 0, 1 },
1637 { "-funcall", 0, 0, 1 },
1638 { "-eval", "--eval", 0, 1 },
1639 { "-execute", "--execute", 0, 1 },
1640 { "-find-file", "--find-file", 0, 1 },
1641 { "-visit", "--visit", 0, 1 },
1642 { "-file", "--file", 0, 1 },
1643 { "-insert", "--insert", 0, 1 },
1645 { "-NXOpen", 0, 0, 1 },
1646 { "-NXOpenTemp", 0, 0, 1 },
1647 { "-NSOpen", 0, 0, 1 },
1648 { "-NSOpenTemp", 0, 0, 1 },
1649 { "-GSFilePath", 0, 0, 1 },
1651 /* This should be processed after ordinary file name args and the like. */
1652 { "-kill", "--kill", -10, 0 },
1655 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1656 so that the highest priority ones come first.
1657 Do not change the order of elements of equal priority.
1658 If an option takes an argument, keep it and its argument together.
1660 If an option that takes no argument appears more
1661 than once, eliminate all but one copy of it. */
1664 sort_args (int argc
, char **argv
)
1666 char **new = xmalloc (argc
* sizeof *new);
1667 /* For each element of argv,
1668 the corresponding element of options is:
1669 0 for an option that takes no arguments,
1670 1 for an option that takes one argument, etc.
1671 -1 for an ordinary non-option argument. */
1672 int *options
= xnmalloc (argc
, sizeof *options
);
1673 int *priority
= xnmalloc (argc
, sizeof *priority
);
1675 int incoming_used
= 1;
1679 /* Categorize all the options,
1680 and figure out which argv elts are option arguments. */
1681 for (from
= 1; from
< argc
; from
++)
1685 if (argv
[from
][0] == '-')
1689 /* If we have found "--", don't consider
1690 any more arguments as options. */
1691 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1693 /* Leave the "--", and everything following it, at the end. */
1694 for (; from
< argc
; from
++)
1696 priority
[from
] = -100;
1702 /* Look for a match with a known old-fashioned option. */
1703 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1704 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1706 options
[from
] = standard_args
[i
].nargs
;
1707 priority
[from
] = standard_args
[i
].priority
;
1708 if (from
+ standard_args
[i
].nargs
>= argc
)
1709 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1710 from
+= standard_args
[i
].nargs
;
1714 /* Look for a match with a known long option.
1715 MATCH is -1 if no match so far, -2 if two or more matches so far,
1716 >= 0 (the table index of the match) if just one match so far. */
1717 if (argv
[from
][1] == '-')
1719 char const *equals
= strchr (argv
[from
], '=');
1721 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1726 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1727 if (standard_args
[i
].longname
1728 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1737 /* If we found exactly one match, use that. */
1740 options
[from
] = standard_args
[match
].nargs
;
1741 priority
[from
] = standard_args
[match
].priority
;
1742 /* If --OPTION=VALUE syntax is used,
1743 this option uses just one argv element. */
1746 if (from
+ options
[from
] >= argc
)
1747 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1748 from
+= options
[from
];
1750 /* FIXME When match < 0, shouldn't there be some error,
1751 or at least indication to the user that there was a
1758 /* Copy the arguments, in order of decreasing priority, to NEW. */
1760 while (incoming_used
< argc
)
1763 int best_priority
= -9999;
1765 /* Find the highest priority remaining option.
1766 If several have equal priority, take the first of them. */
1767 for (from
= 1; from
< argc
; from
++)
1769 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1771 best_priority
= priority
[from
];
1774 /* Skip option arguments--they are tied to the options. */
1775 if (options
[from
] > 0)
1776 from
+= options
[from
];
1782 /* Copy the highest priority remaining option, with its args, to NEW.
1783 Unless it is a duplicate of the previous one. */
1784 if (! (options
[best
] == 0
1785 && ! strcmp (new[to
- 1], argv
[best
])))
1787 new[to
++] = argv
[best
];
1788 for (i
= 0; i
< options
[best
]; i
++)
1789 new[to
++] = argv
[best
+ i
+ 1];
1792 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1794 /* Clear out this option in ARGV. */
1796 for (i
= 0; i
< options
[best
]; i
++)
1797 argv
[best
+ i
+ 1] = 0;
1800 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1804 memcpy (argv
, new, sizeof (char *) * argc
);
1811 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1812 doc
: /* Exit the Emacs job and kill it.
1813 If ARG is an integer, return ARG as the exit program code.
1814 If ARG is a string, stuff it as keyboard input.
1816 This function is called upon receipt of the signals SIGTERM
1817 or SIGHUP, and upon SIGINT in batch mode.
1819 The value of `kill-emacs-hook', if not void,
1820 is a list of functions (of no args),
1821 all of which are called before Emacs is actually killed. */)
1824 struct gcpro gcpro1
;
1832 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1834 waiting_for_input
= 0;
1835 Frun_hooks (1, &Qkill_emacs_hook
);
1838 #ifdef HAVE_X_WINDOWS
1839 /* Transfer any clipboards we own to the clipboard manager. */
1840 x_clipboard_manager_save_all ();
1843 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1846 ns_release_autorelease_pool (ns_pool
);
1849 /* If we have an auto-save list file,
1850 kill it because we are exiting Emacs deliberately (not crashing).
1851 Do it after shut_down_emacs, which does an auto-save. */
1852 if (STRINGP (Vauto_save_list_file_name
))
1853 unlink (SSDATA (Vauto_save_list_file_name
));
1856 exit_code
= (XINT (arg
) < 0
1857 ? XINT (arg
) | INT_MIN
1858 : XINT (arg
) & INT_MAX
);
1860 exit_code
= EXIT_SUCCESS
;
1865 /* Perform an orderly shutdown of Emacs. Autosave any modified
1866 buffers, kill any child processes, clean up the terminal modes (if
1867 we're in the foreground), and other stuff like that. Don't perform
1868 any redisplay; this may be called when Emacs is shutting down in
1869 the background, or after its X connection has died.
1871 If SIG is a signal number, print a message for it.
1873 This is called by fatal signal handlers, X protocol error handlers,
1877 shut_down_emacs (int sig
, Lisp_Object stuff
)
1879 /* Prevent running of hooks from now on. */
1882 /* Don't update display from now on. */
1883 Vinhibit_redisplay
= Qt
;
1885 /* If we are controlling the terminal, reset terminal modes. */
1888 pid_t pgrp
= getpgrp ();
1889 pid_t tpgrp
= tcgetpgrp (0);
1890 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1892 reset_all_sys_modes ();
1893 if (sig
&& sig
!= SIGTERM
)
1895 static char const format
[] = "Fatal error %d: ";
1896 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1897 int buflen
= sprintf (buf
, format
, sig
);
1898 char const *sig_desc
= safe_strsignal (sig
);
1899 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1900 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1906 reset_all_sys_modes ();
1909 stuff_buffered_input (stuff
);
1911 inhibit_sentinels
= 1;
1912 kill_buffer_processes (Qnil
);
1913 Fdo_auto_save (Qt
, Qnil
);
1915 #ifdef CLASH_DETECTION
1916 unlock_all_files ();
1919 /* There is a tendency for a SIGIO signal to arrive within exit,
1920 and cause a SIGHUP because the input descriptor is already closed. */
1924 /* Do this only if terminating normally, we want glyph matrices
1925 etc. in a core dump. */
1926 if (sig
== 0 || sig
== SIGTERM
)
1928 check_glyph_memory ();
1929 check_message_stack ();
1937 ns_term_shutdown (sig
);
1941 xml_cleanup_parser ();
1955 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1956 doc
: /* Dump current state of Emacs into executable file FILENAME.
1957 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1958 This is used in the file `loadup.el' when building Emacs.
1960 You must run Emacs in batch mode in order to dump it. */)
1961 (Lisp_Object filename
, Lisp_Object symfile
)
1965 ptrdiff_t count
= SPECPDL_INDEX ();
1969 if (! noninteractive
)
1970 error ("Dumping Emacs works only in batch mode");
1974 /* Warn if the gap between BSS end and heap start is larger than this. */
1975 # define MAX_HEAP_BSS_DIFF (1024*1024)
1977 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1979 fprintf (stderr
, "**************************************************\n");
1980 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
1981 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
1983 fprintf (stderr
, "or something similar is in effect. The dump may\n");
1984 fprintf (stderr
, "fail because of this. See the section about\n");
1985 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
1986 fprintf (stderr
, "**************************************************\n");
1988 #endif /* GNU_LINUX */
1990 /* Bind `command-line-processed' to nil before dumping,
1991 so that the dumped Emacs will process its command line
1992 and set up to work with X windows if appropriate. */
1993 symbol
= intern ("command-line-processed");
1994 specbind (symbol
, Qnil
);
1996 CHECK_STRING (filename
);
1997 filename
= Fexpand_file_name (filename
, Qnil
);
1998 if (!NILP (symfile
))
2000 CHECK_STRING (symfile
);
2001 if (SCHARS (symfile
))
2002 symfile
= Fexpand_file_name (symfile
, Qnil
);
2006 Vpurify_flag
= Qnil
;
2009 set_time_zone_rule (dump_tz
);
2010 #ifndef LOCALTIME_CACHE
2011 /* Force a tz reload, since set_time_zone_rule doesn't. */
2017 /* Tell malloc where start of impure now is. */
2018 /* Also arrange for warnings when nearly out of space. */
2019 #ifndef SYSTEM_MALLOC
2021 /* On Windows, this was done before dumping, and that once suffices.
2022 Meanwhile, my_edata is not valid on Windows. */
2024 extern char my_edata
[];
2025 memory_warnings (my_edata
, malloc_warning
);
2027 #endif /* not WINDOWSNT */
2028 #endif /* not SYSTEM_MALLOC */
2029 #ifdef DOUG_LEA_MALLOC
2030 malloc_state_ptr
= malloc_get_state ();
2033 #ifdef USE_MMAP_FOR_BUFFERS
2036 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2037 #ifdef USE_MMAP_FOR_BUFFERS
2040 #ifdef DOUG_LEA_MALLOC
2041 free (malloc_state_ptr
);
2045 Vlibrary_cache
= Qnil
;
2047 #ifdef HAVE_WINDOW_SYSTEM
2048 reset_image_types ();
2053 return unbind_to (count
, Qnil
);
2056 #endif /* not CANNOT_DUMP */
2059 /* Recover from setlocale (LC_ALL, ""). */
2063 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2064 so that numbers are read and printed properly for Emacs Lisp. */
2065 setlocale (LC_NUMERIC
, "C");
2068 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2071 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2073 if (! EQ (*plocale
, desired_locale
))
2075 *plocale
= desired_locale
;
2076 setlocale (category
, (STRINGP (desired_locale
)
2077 ? SSDATA (desired_locale
)
2082 /* Set system time locale to match Vsystem_time_locale, if possible. */
2084 synchronize_system_time_locale (void)
2086 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2087 Vsystem_time_locale
);
2090 /* Set system messages locale to match Vsystem_messages_locale, if
2093 synchronize_system_messages_locale (void)
2096 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2097 Vsystem_messages_locale
);
2100 #endif /* HAVE_SETLOCALE */
2104 decode_env_path (const char *evarname
, const char *defalt
)
2106 const char *path
, *p
;
2107 Lisp_Object lpath
, element
, tem
;
2110 const char *emacs_dir
= egetenv ("emacs_dir");
2111 static const char *emacs_dir_env
= "%emacs_dir%/";
2112 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2115 /* It's okay to use getenv here, because this function is only used
2116 to initialize variables when Emacs starts up, and isn't called
2119 path
= getenv (evarname
);
2130 /* Ensure values from the environment use the proper directory separator. */
2133 char *path_copy
= alloca (strlen (path
) + 1);
2134 strcpy (path_copy
, path
);
2135 dostounix_filename (path_copy
, 0);
2142 p
= strchr (path
, SEPCHAR
);
2144 p
= path
+ strlen (path
);
2145 element
= (p
- path
? make_string (path
, p
- path
)
2146 : build_string ("."));
2148 /* Relative file names in the default path are interpreted as
2149 being relative to $emacs_dir. */
2150 if (emacs_dir
&& defaulted
2151 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2152 element
= Fexpand_file_name (Fsubstring (element
,
2153 make_number (emacs_dir_len
),
2155 build_string (emacs_dir
));
2158 /* Add /: to the front of the name
2159 if it would otherwise be treated as magic. */
2160 tem
= Ffind_file_name_handler (element
, Qt
);
2162 /* However, if the handler says "I'm safe",
2163 don't bother adding /:. */
2167 prop
= Fget (tem
, intern ("safe-magic"));
2173 element
= concat2 (build_string ("/:"), element
);
2175 lpath
= Fcons (element
, lpath
);
2181 return Fnreverse (lpath
);
2184 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2185 doc
: /* Return non-nil if the current emacs process is a daemon.
2186 If the daemon was given a name argument, return that name. */)
2191 return build_string (daemon_name
);
2198 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2199 doc
: /* Mark the Emacs daemon as being initialized.
2200 This finishes the daemonization process by doing the other half of detaching
2201 from the parent process and its tty file descriptors. */)
2208 error ("This function can only be called if emacs is run as a daemon");
2210 if (daemon_pipe
[1] < 0)
2211 error ("The daemon has already been initialized");
2213 if (NILP (Vafter_init_time
))
2214 error ("This function can only be called after loading the init files");
2216 /* Get rid of stdin, stdout and stderr. */
2217 nfd
= open ("/dev/null", O_RDWR
);
2219 err
|= dup2 (nfd
, 0) < 0;
2220 err
|= dup2 (nfd
, 1) < 0;
2221 err
|= dup2 (nfd
, 2) < 0;
2222 err
|= close (nfd
) != 0;
2224 /* Closing the pipe will notify the parent that it can exit.
2225 FIXME: In case some other process inherited the pipe, closing it here
2226 won't notify the parent because it's still open elsewhere, so we
2227 additionally send a byte, just to make sure the parent really exits.
2228 Instead, we should probably close the pipe in start-process and
2229 call-process to make sure the pipe is never inherited by
2231 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2232 err
|= close (daemon_pipe
[1]) != 0;
2233 /* Set it to an invalid value so we know we've already run this function. */
2234 daemon_pipe
[1] = -1;
2237 error ("I/O error during daemon initialization");
2242 syms_of_emacs (void)
2244 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2245 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2246 DEFSYM (Qkill_emacs
, "kill-emacs");
2247 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2250 defsubr (&Sdump_emacs
);
2253 defsubr (&Skill_emacs
);
2255 defsubr (&Sinvocation_name
);
2256 defsubr (&Sinvocation_directory
);
2257 defsubr (&Sdaemonp
);
2258 defsubr (&Sdaemon_initialized
);
2260 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2261 doc
: /* Args passed by shell to Emacs, as a list of strings.
2262 Many arguments are deleted from the list as they are processed. */);
2264 DEFVAR_LISP ("system-type", Vsystem_type
,
2265 doc
: /* The value is a symbol indicating the type of operating system you are using.
2267 `gnu' compiled for a GNU Hurd system.
2268 `gnu/linux' compiled for a GNU/Linux system.
2269 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2270 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2271 `ms-dos' compiled as an MS-DOS application.
2272 `windows-nt' compiled as a native W32 application.
2273 `cygwin' compiled using the Cygwin library.
2274 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2275 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2276 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2277 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2279 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2280 doc
: /* Value is string indicating configuration Emacs was built for.
2281 On MS-Windows, the value reflects the OS flavor and version on which
2282 Emacs is running. */);
2283 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2285 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2286 doc
: /* String containing the configuration options Emacs was built with. */);
2287 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2289 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2290 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2292 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2293 doc
: /* Hook run when `kill-emacs' is called.
2294 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2295 in other similar situations), functions placed on this hook should not
2296 expect to be able to interact with the user. To ask for confirmation,
2297 see `kill-emacs-query-functions' instead.
2299 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2300 `noninteractive' was non-nil. */);
2301 Vkill_emacs_hook
= Qnil
;
2303 DEFVAR_LISP ("path-separator", Vpath_separator
,
2304 doc
: /* String containing the character that separates directories in
2305 search paths, such as PATH and other similar environment variables. */);
2308 Vpath_separator
= make_string (&c
, 1);
2311 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2312 doc
: /* The program name that was used to run Emacs.
2313 Any directory names are omitted. */);
2315 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2316 doc
: /* The directory in which the Emacs executable was found, to run it.
2317 The value is nil if that directory's name is not known. */);
2319 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2320 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2321 In an installed Emacs, this is normally nil. It is non-nil if
2322 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2323 within the variable `invocation-directory' or its parent. For example,
2324 this is the case when running an uninstalled Emacs executable from its
2325 build directory. */);
2326 Vinstallation_directory
= Qnil
;
2328 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2329 doc
: /* System locale for messages. */);
2330 Vsystem_messages_locale
= Qnil
;
2332 DEFVAR_LISP ("previous-system-messages-locale",
2333 Vprevious_system_messages_locale
,
2334 doc
: /* Most recently used system locale for messages. */);
2335 Vprevious_system_messages_locale
= Qnil
;
2337 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2338 doc
: /* System locale for time. */);
2339 Vsystem_time_locale
= Qnil
;
2341 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2342 doc
: /* Most recently used system locale for time. */);
2343 Vprevious_system_time_locale
= Qnil
;
2345 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2346 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2347 Vbefore_init_time
= Qnil
;
2349 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2350 doc
: /* Value of `current-time' after loading the init files.
2351 This is nil during initialization. */);
2352 Vafter_init_time
= Qnil
;
2354 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2355 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2356 inhibit_x_resources
= 0;
2358 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2359 doc
: /* Short copyright string for this version of Emacs. */);
2360 Vemacs_copyright
= build_string (emacs_copyright
);
2362 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2363 doc
: /* Version numbers of this version of Emacs. */);
2364 Vemacs_version
= build_string (emacs_version
);
2366 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2367 doc
: /* Alist of dynamic libraries vs external files implementing them.
2368 Each element is a list (LIBRARY FILE...), where the car is a symbol
2369 representing a supported external library, and the rest are strings giving
2370 alternate filenames for that library.
2372 Emacs tries to load the library from the files in the order they appear on
2373 the list; if none is loaded, the running session of Emacs won't have access
2376 Note that image types `pbm' and `xbm' do not need entries in this variable
2377 because they do not depend on external libraries and are always available.
2379 Also note that this is not a generic facility for accessing external
2380 libraries; only those already known by Emacs will be loaded. */);
2381 Vdynamic_library_alist
= Qnil
;
2382 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2385 Vlibrary_cache
= Qnil
;
2386 staticpro (&Vlibrary_cache
);
2389 /* Make sure IS_DAEMON starts up as false. */