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"
68 #include "blockinput.h"
69 #include "syssignal.h"
72 #include "termhooks.h"
80 #if (defined PROFILING \
81 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
82 # include <sys/gmon.h>
83 extern void moncontrol (int mode
);
92 #include <sys/resource.h>
95 #ifdef HAVE_PERSONALITY_LINUX32
96 #include <sys/personality.h>
99 static const char emacs_version
[] = VERSION
;
100 static const char emacs_copyright
[] = COPYRIGHT
;
102 /* Empty lisp strings. To avoid having to build any others. */
103 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
106 /* Cache for externally loaded libraries. */
107 Lisp_Object Vlibrary_cache
;
110 /* Set after Emacs has started up the first time.
111 Prevents reinitialization of the Lisp world and keymaps
112 on subsequent starts. */
116 extern void unexec_init_emacs_zone (void);
119 #ifdef DOUG_LEA_MALLOC
120 /* Preserves a pointer to the memory allocated that copies that
121 static data inside glibc's malloc. */
122 static void *malloc_state_ptr
;
123 /* From glibc, a routine that returns a copy of the malloc internal state. */
124 extern void *malloc_get_state (void);
125 /* From glibc, a routine that overwrites the malloc internal state. */
126 extern int malloc_set_state (void*);
127 /* True if the MALLOC_CHECK_ environment variable was set while
128 dumping. Used to work around a bug in glibc's malloc. */
129 static bool malloc_using_checking
;
132 Lisp_Object Qfile_name_handler_alist
;
134 Lisp_Object Qrisky_local_variable
;
136 Lisp_Object Qkill_emacs
;
137 static Lisp_Object Qkill_emacs_hook
;
139 /* If true, Emacs should not attempt to use a window-specific code,
140 but instead should use the virtual terminal under which it was started. */
141 bool inhibit_window_system
;
143 /* If true, a filter or a sentinel is running. Tested to save the match
144 data on the first attempt to change it inside asynchronous code. */
145 bool running_asynch_code
;
147 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
148 /* If true, -d was specified, meaning we're using some window system. */
152 /* An address near the bottom of the stack.
153 Tells GC how to save a copy of the stack. */
156 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
157 /* The address where the heap starts (from the first sbrk (0) call). */
158 static void *my_heap_start
;
162 /* The gap between BSS end and heap start as far as we can tell. */
163 static uprintmax_t heap_bss_diff
;
166 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
169 On Cocoa, CoreFoundation lib fails in forked process:
170 http://developer.apple.com/ReleaseNotes/
171 CoreFoundation/CoreFoundation.html)
173 On Windows, a Cygwin fork child cannot access the USER subsystem.
175 We mark being in the exec'd process by a daemon name argument of
176 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
177 NAME is the original daemon name, if any. */
178 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
179 # define DAEMON_MUST_EXEC
182 /* True means running Emacs without interactive terminal. */
185 /* True means remove site-lisp directories from load-path. */
188 /* Name for the server started by the daemon.*/
189 static char *daemon_name
;
191 /* Pipe used to send exit notification to the daemon parent at
195 /* Save argv and argc. */
199 static void sort_args (int argc
, char **argv
);
200 static void syms_of_emacs (void);
202 /* MSVC needs each string be shorter than 2048 bytes, so the usage
203 strings below are split to not overflow this limit. */
205 Usage: %s [OPTION-OR-FILENAME]...\n\
207 Run Emacs, the extensible, customizable, self-documenting real-time\n\
208 display editor. The recommended way to start Emacs for normal editing\n\
209 is with no options at all.\n\
211 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
212 read the main documentation for these command-line arguments.\n\
214 Initialization options:\n\
216 --batch do not do interactive display; implies -q\n\
217 --chdir DIR change to directory DIR\n\
218 --daemon start a server in the background\n\
219 --debug-init enable Emacs Lisp debugger for init file\n\
220 --display, -d DISPLAY use X server DISPLAY\n\
221 --no-desktop do not load a saved desktop\n\
222 --no-init-file, -q load neither ~/.emacs nor default.el\n\
223 --no-shared-memory, -nl do not use shared memory\n\
224 --no-site-file do not load site-start.el\n\
225 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
226 --no-splash do not display a splash screen on startup\n\
227 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
228 --quick, -Q equivalent to:\n\
229 -q --no-site-file --no-site-lisp --no-splash\n\
230 --script FILE run FILE as an Emacs Lisp script\n\
231 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
232 --user, -u USER load ~USER/.emacs instead of your own\n\
238 FILE visit FILE using find-file\n\
239 +LINE go to line LINE in next FILE\n\
240 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
241 --directory, -L DIR add DIR to variable load-path\n\
242 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
243 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
244 --file FILE visit FILE using find-file\n\
245 --find-file FILE visit FILE using find-file\n\
246 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
247 --insert FILE insert contents of FILE into current buffer\n\
248 --kill exit without asking for confirmation\n\
249 --load, -l FILE load Emacs Lisp FILE using the load function\n\
250 --visit FILE visit FILE using find-file\n\
256 --background-color, -bg COLOR window background color\n\
257 --basic-display, -D disable many display features;\n\
258 used for debugging Emacs\n\
259 --border-color, -bd COLOR main border color\n\
260 --border-width, -bw WIDTH width of main border\n\
261 --color, --color=MODE override color mode for character terminals;\n\
262 MODE defaults to `auto', and\n\
263 can also be `never', `always',\n\
264 or a mode name like `ansi8'\n\
265 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
266 --font, -fn FONT default font; must be fixed-width\n\
267 --foreground-color, -fg COLOR window foreground color\n\
268 --fullheight, -fh make the first frame high as the screen\n\
269 --fullscreen, -fs make the first frame fullscreen\n\
270 --fullwidth, -fw make the first frame wide as the screen\n\
271 --maximized, -mm make the first frame maximized\n\
272 --geometry, -g GEOMETRY window geometry\n\
273 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
274 --iconic start Emacs in iconified state\n\
275 --internal-border, -ib WIDTH width between text and main border\n\
276 --line-spacing, -lsp PIXELS additional space to put between lines\n\
277 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
278 --name NAME title for initial Emacs frame\n\
279 --no-blinking-cursor, -nbc disable blinking cursor\n\
280 --reverse-video, -r, -rv switch foreground and background\n\
281 --title, -T TITLE title for initial Emacs frame\n\
282 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
283 --xrm XRESOURCES set additional X resources\n\
284 --parent-id XID set parent window\n\
285 --help display this help and exit\n\
286 --version output version information and exit\n\
290 You can generally also specify long option names with a single -; for\n\
291 example, -batch as well as --batch. You can use any unambiguous\n\
292 abbreviation for a --option.\n\
294 Various environment variables and window system resources also affect\n\
295 Emacs' operation. See the main documentation.\n\
297 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
298 section of the Emacs manual or the file BUGS.\n"
301 /* True if handling a fatal error already. */
302 bool fatal_error_in_progress
;
305 /* NS autrelease pool, for memory management. */
306 static void *ns_pool
;
311 setlocale (int cat
, char const *locale
)
318 /* Report a fatal error due to signal SIG, output a backtrace of at
319 most BACKTRACE_LIMIT lines, and exit. */
321 terminate_due_to_signal (int sig
, int backtrace_limit
)
323 signal (sig
, SIG_DFL
);
324 totally_unblock_input ();
326 /* If fatal error occurs in code below, avoid infinite recursion. */
327 if (! fatal_error_in_progress
)
329 fatal_error_in_progress
= 1;
331 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
332 Fkill_emacs (make_number (sig
));
334 shut_down_emacs (sig
, Qnil
);
335 emacs_backtrace (backtrace_limit
);
338 /* Signal the same code; this time it will really be fatal.
339 Since we're in a signal handler, the signal is blocked, so we
340 have to unblock it if we want to really receive it. */
344 sigemptyset (&unblocked
);
345 sigaddset (&unblocked
, sig
);
346 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
352 /* This shouldn't be executed, but it prevents a warning. */
356 /* Code for dealing with Lisp access to the Unix command line. */
359 init_cmdargs (int argc
, char **argv
, int skip_args
)
362 Lisp_Object name
, dir
, handler
;
363 ptrdiff_t count
= SPECPDL_INDEX ();
364 Lisp_Object raw_name
;
369 raw_name
= build_string (argv
[0]);
371 /* Add /: to the front of the name
372 if it would otherwise be treated as magic. */
373 handler
= Ffind_file_name_handler (raw_name
, Qt
);
374 if (! NILP (handler
))
375 raw_name
= concat2 (build_string ("/:"), raw_name
);
377 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
378 Vinvocation_directory
= Ffile_name_directory (raw_name
);
380 /* If we got no directory in argv[0], search PATH to find where
381 Emacs actually came from. */
382 if (NILP (Vinvocation_directory
))
385 int yes
= openp (Vexec_path
, Vinvocation_name
,
386 Vexec_suffixes
, &found
, make_number (X_OK
));
389 /* Add /: to the front of the name
390 if it would otherwise be treated as magic. */
391 handler
= Ffind_file_name_handler (found
, Qt
);
392 if (! NILP (handler
))
393 found
= concat2 (build_string ("/:"), found
);
394 Vinvocation_directory
= Ffile_name_directory (found
);
398 if (!NILP (Vinvocation_directory
)
399 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
400 /* Emacs was started with relative path, like ./emacs.
402 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
404 Vinstallation_directory
= Qnil
;
406 if (!NILP (Vinvocation_directory
))
408 dir
= Vinvocation_directory
;
410 /* If we are running from the build directory, set DIR to the
411 src subdirectory of the Emacs tree, like on Posix
413 if (SBYTES (dir
) > sizeof ("/i386/") - 1
414 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
416 dir
= Fexpand_file_name (build_string ("../.."), dir
);
417 #else /* !WINDOWSNT */
419 name
= Fexpand_file_name (Vinvocation_name
, dir
);
422 Lisp_Object tem
, lib_src_exists
;
423 Lisp_Object etc_exists
, info_exists
;
425 /* See if dir contains subdirs for use by Emacs.
426 Check for the ones that would exist in a build directory,
427 not including lisp and info. */
428 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
429 lib_src_exists
= Ffile_exists_p (tem
);
432 /* MSDOS installations frequently remove lib-src, but we still
433 must set installation-directory, or else info won't find
434 its files (it uses the value of installation-directory). */
435 tem
= Fexpand_file_name (build_string ("info"), dir
);
436 info_exists
= Ffile_exists_p (tem
);
441 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
443 tem
= Fexpand_file_name (build_string ("etc"), dir
);
444 etc_exists
= Ffile_exists_p (tem
);
445 if (!NILP (etc_exists
))
447 Vinstallation_directory
448 = Ffile_name_as_directory (dir
);
453 /* See if dir's parent contains those subdirs. */
454 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
455 lib_src_exists
= Ffile_exists_p (tem
);
459 /* See the MSDOS commentary above. */
460 tem
= Fexpand_file_name (build_string ("../info"), dir
);
461 info_exists
= Ffile_exists_p (tem
);
466 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
468 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
469 etc_exists
= Ffile_exists_p (tem
);
470 if (!NILP (etc_exists
))
472 tem
= Fexpand_file_name (build_string (".."), dir
);
473 Vinstallation_directory
474 = Ffile_name_as_directory (tem
);
479 /* If the Emacs executable is actually a link,
480 next try the dir that the link points into. */
481 tem
= Ffile_symlink_p (name
);
484 name
= Fexpand_file_name (tem
, dir
);
485 dir
= Ffile_name_directory (name
);
492 Vcommand_line_args
= Qnil
;
494 for (i
= argc
- 1; i
>= 0; i
--)
496 if (i
== 0 || i
> skip_args
)
497 /* For the moment, we keep arguments as is in unibyte strings.
498 They are decoded in the function command-line after we know
499 locale-coding-system. */
501 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
505 unbind_to (count
, Qnil
);
508 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
509 doc
: /* Return the program name that was used to run Emacs.
510 Any directory names are omitted. */)
513 return Fcopy_sequence (Vinvocation_name
);
516 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
518 doc
: /* Return the directory name in which the Emacs executable was located. */)
521 return Fcopy_sequence (Vinvocation_directory
);
526 /* A valid but unlikely value for the TZ environment value.
527 It is OK (though a bit slower) if the user actually chooses this value. */
528 static char const dump_tz
[] = "UtC0";
531 /* Test whether the next argument in ARGV matches SSTR or a prefix of
532 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
533 (the argument is supposed to have a value) store in *VALPTR either
534 the next argument or the portion of this one after the equal sign.
535 ARGV is read starting at position *SKIPPTR; this index is advanced
536 by the number of arguments used.
538 Too bad we can't just use getopt for all of this, but we don't have
539 enough information to do it right. */
542 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
543 int minlen
, char **valptr
, int *skipptr
)
549 /* Don't access argv[argc]; give up in advance. */
550 if (argc
<= *skipptr
+ 1)
553 arg
= argv
[*skipptr
+1];
556 if (strcmp (arg
, sstr
) == 0)
560 *valptr
= argv
[*skipptr
+2];
567 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
568 ? p
- arg
: strlen (arg
));
569 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
571 else if (valptr
== NULL
)
582 else if (argv
[*skipptr
+2] != NULL
)
584 *valptr
= argv
[*skipptr
+2];
594 #ifdef DOUG_LEA_MALLOC
596 /* malloc can be invoked even before main (e.g. by the dynamic
597 linker), so the dumped malloc state must be restored as early as
598 possible using this special hook. */
601 malloc_initialize_hook (void)
605 if (!malloc_using_checking
)
606 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
607 ignored if the heap to be restored was constructed without
608 malloc checking. Can't use unsetenv, since that calls malloc. */
612 for (p
= environ
; p
&& *p
; p
++)
613 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
622 malloc_set_state (malloc_state_ptr
);
623 #ifndef XMALLOC_OVERRUN_CHECK
624 free (malloc_state_ptr
);
629 if (my_heap_start
== 0)
630 my_heap_start
= sbrk (0);
631 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
635 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
637 #endif /* DOUG_LEA_MALLOC */
639 /* Close standard output and standard error, reporting any write
640 errors as best we can. This is intended for use with atexit. */
642 close_output_streams (void)
644 if (close_stream (stdout
) != 0)
646 fprintf (stderr
, "Write error to standard output: %s\n",
649 _exit (EXIT_FAILURE
);
652 if (close_stream (stderr
) != 0)
653 _exit (EXIT_FAILURE
);
658 main (int argc
, char **argv
)
663 char stack_bottom_variable
;
664 bool do_initial_setlocale
;
667 #ifdef HAVE_SETRLIMIT
673 #ifdef DAEMON_MUST_EXEC
682 #ifdef G_SLICE_ALWAYS_MALLOC
683 /* This is used by the Cygwin build. */
684 xputenv ("G_SLICE=always-malloc");
690 extern char my_endbss
[];
691 extern char *my_endbss_static
;
693 if (my_heap_start
== 0)
694 my_heap_start
= sbrk (0);
696 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
700 #if defined WINDOWSNT || defined HAVE_NTGUI
701 /* Set global variables used to detect Windows version. Do this as
702 early as possible. (unexw32.c calls this function as well, but
703 the additional call here is harmless.) */
704 cache_system_info ();
707 #ifdef RUN_TIME_REMAP
709 run_time_remap (argv
[0]);
712 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
715 unexec_init_emacs_zone ();
718 atexit (close_output_streams
);
720 sort_args (argc
, argv
);
722 while (argv
[argc
]) argc
++;
724 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
726 const char *version
, *copyright
;
729 Lisp_Object tem
, tem2
;
730 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
731 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
734 fprintf (stderr
, "Invalid value of `emacs-version'\n");
739 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
744 version
= SSDATA (tem
);
745 copyright
= SSDATA (tem2
);
750 version
= emacs_version
;
751 copyright
= emacs_copyright
;
753 printf ("GNU Emacs %s\n", version
);
754 printf ("%s\n", copyright
);
755 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
756 printf ("You may redistribute copies of Emacs\n");
757 printf ("under the terms of the GNU General Public License.\n");
758 printf ("For more information about these matters, ");
759 printf ("see the file named COPYING.\n");
763 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
764 if (chdir (ch_to_dir
) == -1)
766 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
767 argv
[0], ch_to_dir
, strerror (errno
));
771 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
772 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
774 #ifdef HAVE_PERSONALITY_LINUX32
775 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
777 /* Set this so we only do this once. */
778 xputenv ("EMACS_HEAP_EXEC=true");
780 /* A flag to turn off address randomization which is introduced
781 in linux kernel shipped with fedora core 4 */
782 #define ADD_NO_RANDOMIZE 0x0040000
783 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
784 #undef ADD_NO_RANDOMIZE
786 execvp (argv
[0], argv
);
788 /* If the exec fails, try to dump anyway. */
791 #endif /* HAVE_PERSONALITY_LINUX32 */
793 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
794 /* Extend the stack space available.
795 Don't do that if dumping, since some systems (e.g. DJGPP)
796 might define a smaller stack limit at that time. */
799 && (!noninteractive
|| initialized
)
801 && !getrlimit (RLIMIT_STACK
, &rlim
))
804 extern size_t re_max_failures
;
805 /* Approximate the amount regex.c needs per unit of re_max_failures. */
806 int ratio
= 20 * sizeof (char *);
807 /* Then add 33% to cover the size of the smaller stacks that regex.c
808 successively allocates and discards, on its way to the maximum. */
810 /* Add in some extra to cover
811 what we're likely to use for other reasons. */
812 newlim
= re_max_failures
* ratio
+ 200000;
814 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
815 stack allocation routine for new process that the allocation
816 fails if stack limit is not on page boundary. So, round up the
817 new limit to page boundary. */
818 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
820 if (newlim
> rlim
.rlim_max
)
822 newlim
= rlim
.rlim_max
;
823 /* Don't let regex.c overflow the stack we have. */
824 re_max_failures
= (newlim
- 200000) / ratio
;
826 if (rlim
.rlim_cur
< newlim
)
827 rlim
.rlim_cur
= newlim
;
829 setrlimit (RLIMIT_STACK
, &rlim
);
831 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
833 /* Record (approximately) where the stack begins. */
834 stack_bottom
= &stack_bottom_variable
;
838 #ifndef SYSTEM_MALLOC
839 /* Arrange to get warning messages as memory fills up. */
840 memory_warnings (0, malloc_warning
);
842 /* Call malloc at least once, to run malloc_initialize_hook.
843 Also call realloc and free for consistency. */
844 free (realloc (malloc (4), 4));
846 #endif /* not SYSTEM_MALLOC */
848 #if defined (MSDOS) || defined (WINDOWSNT)
849 /* We do all file input/output as binary files. When we need to translate
850 newlines, we do that manually. */
852 #endif /* MSDOS || WINDOWSNT */
855 if (!isatty (fileno (stdin
)))
856 setmode (fileno (stdin
), O_BINARY
);
857 if (!isatty (fileno (stdout
)))
860 setmode (fileno (stdout
), O_BINARY
);
864 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
865 The build procedure uses this while dumping, to ensure that the
866 dumped Emacs does not have its system locale tables initialized,
867 as that might cause screwups when the dumped Emacs starts up. */
869 char *lc_all
= getenv ("LC_ALL");
870 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
873 /* Set locale now, so that initial error messages are localized properly.
874 fixup_locale must wait until later, since it builds strings. */
875 if (do_initial_setlocale
)
876 setlocale (LC_ALL
, "");
878 inhibit_window_system
= 0;
880 /* Handle the -t switch, which specifies filename to use as terminal. */
884 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
889 result
= emacs_open (term
, O_RDWR
, 0);
890 if (result
< 0 || dup (0) < 0)
892 char *errstring
= strerror (errno
);
893 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
898 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
901 fprintf (stderr
, "Using %s\n", term
);
902 #ifdef HAVE_WINDOW_SYSTEM
903 inhibit_window_system
= 1; /* -t => -nw */
910 /* Command line option --no-windows is deprecated and thus not mentioned
911 in the manual and usage information. */
912 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
913 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
914 inhibit_window_system
= 1;
916 /* Handle the -batch switch, which means don't do interactive display. */
918 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
921 Vundo_outer_limit
= Qnil
;
923 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
925 noninteractive
= 1; /* Set batch mode. */
926 /* Convert --script to -scriptload, un-skip it, and sort again
927 so that it will be handled in proper sequence. */
928 /* FIXME broken for --script=FILE - is that supposed to work? */
929 argv
[skip_args
- 1] = (char *) "-scriptload";
931 sort_args (argc
, argv
);
934 /* Handle the --help option, which gives a usage message. */
935 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
937 printf (USAGE1
, argv
[0], USAGE2
);
943 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
944 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
949 /* Start as a daemon: fork a new child process which will run the
950 rest of the initialization code, then exit.
952 Detaching a daemon requires the following steps:
956 - close the tty file-descriptors
958 We only want to do the last 2 steps once the daemon is ready to
959 serve requests, i.e. after loading .emacs (initialization).
960 OTOH initialization may start subprocesses (e.g. ispell) and these
961 should be run from the proper process (the one that will end up
962 running as daemon) and with the proper "session id" in order for
963 them to keep working after detaching, so fork and setsid need to be
964 performed before initialization.
966 We want to avoid exiting before the server socket is ready, so
967 use a pipe for synchronization. The parent waits for the child
968 to close its end of the pipe (using `daemon-initialized')
970 if (pipe (daemon_pipe
) == -1)
972 fprintf (stderr
, "Cannot pipe!\n");
976 #ifndef DAEMON_MUST_EXEC
978 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
979 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
980 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
983 #else /* DAEMON_MUST_EXEC */
984 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
985 f
= fork (); /* in orig */
987 f
= 0; /* in exec'd */
988 #endif /* !DAEMON_MUST_EXEC */
994 /* Close unused writing end of the pipe. */
995 close (daemon_pipe
[1]);
997 /* Just wait for the child to close its end of the pipe. */
1000 retval
= read (daemon_pipe
[0], &buf
, 1);
1002 while (retval
== -1 && errno
== EINTR
);
1006 fprintf (stderr
, "Error reading status from child\n");
1009 else if (retval
== 0)
1011 fprintf (stderr
, "Error: server did not start correctly\n");
1015 close (daemon_pipe
[0]);
1020 fprintf (stderr
, "Cannot fork!\n");
1024 #ifdef DAEMON_MUST_EXEC
1026 /* In orig process, forked as child, OR in exec'd. */
1027 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1028 { /* In orig, child: now exec w/special daemon name. */
1031 snprintf (fdStr
, sizeof fdStr
,
1032 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1033 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1035 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1037 fprintf (stderr
, "daemon: child name too long\n");
1041 argv
[skip_args
] = fdStr
;
1043 execvp (argv
[0], argv
);
1044 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1048 /* In exec'd: parse special dname into pipe and name info. */
1049 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1050 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1052 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1055 dname_arg2
[0] = '\0';
1056 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1058 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1060 #endif /* DAEMON_MUST_EXEC */
1063 daemon_name
= xstrdup (dname_arg
);
1064 /* Close unused reading end of the pipe. */
1065 close (daemon_pipe
[0]);
1066 /* Make sure that the used end of the pipe is closed on exec, so
1067 that it is not accessible to programs started from .emacs. */
1068 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1072 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1077 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1078 if (! noninteractive
)
1080 extern void malloc_enable_thread (void);
1082 malloc_enable_thread ();
1086 init_signals (dumping
);
1088 noninteractive1
= noninteractive
;
1090 /* Perform basic initializations (not merely interning symbols). */
1097 init_charset_once ();
1098 init_coding_once ();
1099 init_syntax_once (); /* Create standard syntax table. */
1100 init_category_once (); /* Create standard category table. */
1101 init_casetab_once (); /* Must be done before init_buffer_once. */
1102 init_buffer_once (); /* Create buffer table and some buffers. */
1103 init_minibuf_once (); /* Create list of minibuffers. */
1104 /* Must precede init_window_once. */
1106 /* Call syms_of_xfaces before init_window_once because that
1107 function creates Vterminal_frame. Termcap frames now use
1108 faces, and the face implementation uses some symbols as
1111 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1112 be better to arrange things not to have this dependency. */
1114 /* Call syms_of_keyboard before init_window_once because
1115 keyboard sets up symbols that include some face names that
1116 the X support will want to use. This can happen when
1117 CANNOT_DUMP is defined. */
1118 syms_of_keyboard ();
1120 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1122 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1124 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1126 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1128 /* Before syms_of_coding because it initializes Qcharsetp. */
1130 /* Before init_window_once, because it sets up the
1131 Vcoding_system_hash_table. */
1132 syms_of_coding (); /* This should be after syms_of_fileio. */
1134 init_window_once (); /* Init the window system. */
1135 #ifdef HAVE_WINDOW_SYSTEM
1136 init_fringe_once (); /* Swap bitmaps if necessary. */
1137 #endif /* HAVE_WINDOW_SYSTEM */
1142 if (do_initial_setlocale
)
1145 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1146 Vsystem_time_locale
= Vprevious_system_time_locale
;
1151 running_asynch_code
= 0;
1155 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1158 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1161 ns_pool
= ns_alloc_autorelease_pool ();
1162 if (!noninteractive
)
1164 #ifdef NS_IMPL_COCOA
1165 if (skip_args
< argc
)
1167 /* FIXME: Do the right thing if getenv returns NULL, or if
1169 if (!strncmp (argv
[skip_args
], "-psn", 4))
1172 chdir (getenv ("HOME"));
1174 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1177 chdir (getenv ("HOME"));
1182 #endif /* HAVE_NS */
1184 #ifdef HAVE_X_WINDOWS
1185 /* Stupid kludge to catch command-line display spec. We can't
1186 handle this argument entirely in window system dependent code
1187 because we don't even know which window system dependent code
1188 to run until we've recognized this argument. */
1190 char *displayname
= 0;
1191 int count_before
= skip_args
;
1193 /* Skip any number of -d options, but only use the last one. */
1196 int count_before_this
= skip_args
;
1198 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1200 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1205 count_before
= count_before_this
;
1208 /* If we have the form --display=NAME,
1209 convert it into -d name.
1210 This requires inserting a new element into argv. */
1211 if (displayname
&& count_before
< skip_args
)
1213 if (skip_args
== count_before
+ 1)
1215 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1216 (argc
- (count_before
+ 2)) * sizeof *argv
);
1217 argv
[count_before
+ 2] = displayname
;
1220 argv
[count_before
+ 1] = (char *) "-d";
1225 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1226 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1230 /* Don't actually discard this arg. */
1231 skip_args
= count_before
;
1233 #else /* !HAVE_X_WINDOWS */
1236 int count_before
= skip_args
;
1238 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1239 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1242 skip_args
= count_before
;
1246 /* argmatch must not be used after here,
1247 except when building temacs
1248 because the -d argument has not been skipped in skip_args. */
1251 /* Call early 'cause init_environment needs it. */
1253 /* Set defaults for several environment variables. */
1255 init_environment (argc
, argv
, skip_args
);
1260 /* Do this after initializing the memory allocator, since it uses
1261 glib and glib uses malloc. And do it before anything else that
1262 invokes glib, to avoid potential races among glib subthreads in
1263 Cygwin glib. gfilenotify invokes glib, so this can't be delayed
1265 catch_child_signal ();
1267 #ifdef HAVE_GFILENOTIFY
1268 globals_of_gfilenotify ();
1273 #ifdef HAVE_W32NOTIFY
1274 globals_of_w32notify ();
1276 /* Initialize environment from registry settings. */
1277 init_environment (argv
);
1278 init_ntproc (dumping
); /* must precede init_editfns. */
1281 /* Initialize and GC-protect Vinitial_environment and
1282 Vprocess_environment before set_initial_environment fills them
1285 syms_of_callproc ();
1286 /* egetenv is a pretty low-level facility, which may get called in
1287 many circumstances; it seems flimsy to put off initializing it
1288 until calling init_callproc. Do not do it when dumping. */
1290 set_initial_environment ();
1292 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1293 if this is not done. Do it after set_global_environment so that we
1294 don't pollute Vglobal_environment. */
1295 /* Setting LANG here will defeat the startup locale processing... */
1300 init_buffer (); /* Init default directory of main buffer. */
1302 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1303 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1307 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1308 Lisp_Object old_log_max
;
1309 old_log_max
= Vmessage_log_max
;
1310 XSETFASTINT (Vmessage_log_max
, 0);
1311 message_dolog ("", 0, 1, 0);
1312 Vmessage_log_max
= old_log_max
;
1315 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1319 /* Check to see if Emacs has been installed correctly. */
1320 check_windows_init_file ();
1323 /* Intern the names of all standard functions and variables;
1324 define standard keys. */
1328 /* The basic levels of Lisp must come first. Note that
1329 syms_of_data and some others have already been called. */
1334 syms_of_floatfns ();
1337 syms_of_bytecode ();
1339 syms_of_casefiddle ();
1341 syms_of_category ();
1343 syms_of_character ();
1350 syms_of_filelock ();
1353 /* syms_of_keymap (); */
1361 syms_of_terminal ();
1367 syms_of_textprop ();
1368 syms_of_composite ();
1371 #endif /* WINDOWSNT */
1378 #ifdef HAVE_WINDOW_SYSTEM
1381 #endif /* HAVE_WINDOW_SYSTEM */
1382 #ifdef HAVE_X_WINDOWS
1387 syms_of_xsettings ();
1394 #endif /* HAVE_X_WINDOWS */
1407 #endif /* HAVE_NTGUI */
1409 #if defined WINDOWSNT || defined HAVE_NTGUI
1410 syms_of_w32select ();
1417 syms_of_win16select ();
1424 syms_of_nsselect ();
1426 #endif /* HAVE_NS */
1432 #ifdef HAVE_GFILENOTIFY
1433 syms_of_gfilenotify ();
1434 #endif /* HAVE_GFILENOTIFY */
1438 #endif /* HAVE_INOTIFY */
1441 syms_of_dbusbind ();
1442 #endif /* HAVE_DBUS */
1446 #ifdef HAVE_W32NOTIFY
1447 syms_of_w32notify ();
1448 #endif /* HAVE_W32NOTIFY */
1449 #endif /* WINDOWSNT */
1451 syms_of_profiler ();
1453 keys_of_casefiddle ();
1456 keys_of_keyboard ();
1462 /* Initialization that must be done even if the global variable
1463 initialized is non zero. */
1465 globals_of_w32font ();
1466 globals_of_w32fns ();
1467 globals_of_w32menu ();
1468 #endif /* HAVE_NTGUI */
1470 #if defined WINDOWSNT || defined HAVE_NTGUI
1471 globals_of_w32select ();
1477 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1478 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1479 init_keyboard (); /* This too must precede init_sys_modes. */
1480 if (!noninteractive
)
1481 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1483 #ifdef HAVE_WINDOW_SYSTEM
1485 #endif /* HAVE_WINDOW_SYSTEM */
1493 /* Handle -l loadup, args passed by Makefile. */
1494 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1495 Vtop_level
= Fcons (intern_c_string ("load"),
1496 Fcons (build_string (file
), Qnil
));
1497 /* Unless next switch is -nl, load "loadup.el" first thing. */
1499 Vtop_level
= Fcons (intern_c_string ("load"),
1500 Fcons (build_string ("loadup.el"), Qnil
));
1507 /* If the execution TZ happens to be the same as the dump TZ,
1508 change it to some other value and then change it back,
1509 to force the underlying implementation to reload the TZ info.
1510 This is needed on implementations that load TZ info from files,
1511 since the TZ file contents may differ between dump and execution. */
1512 char *tz
= getenv ("TZ");
1513 if (tz
&& !strcmp (tz
, dump_tz
))
1523 /* Set up for profiling. This is known to work on FreeBSD,
1524 GNU/Linux and MinGW. It might work on some other systems too.
1525 Give it a try and tell us if it works on your system. To compile
1526 for profiling, use the configure option --enable-profiling. */
1527 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1532 extern unsigned char etext
asm ("etext");
1538 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1547 #ifdef LOCALTIME_CACHE
1548 /* Some versions of localtime have a bug. They cache the value of the time
1549 zone rather than looking it up every time. Since localtime() is
1550 called to bolt the undumping time into the undumped emacs, this
1551 results in localtime ignoring the TZ environment variable.
1552 This flushes the new TZ value into localtime. */
1554 #endif /* defined (LOCALTIME_CACHE) */
1556 /* Enter editor command loop. This never returns. */
1562 /* Sort the args so we can find the most important ones
1563 at the beginning of argv. */
1565 /* First, here's a table of all the standard options. */
1567 struct standard_args
1570 const char *longname
;
1575 static const struct standard_args standard_args
[] =
1577 { "-version", "--version", 150, 0 },
1578 { "-chdir", "--chdir", 130, 1 },
1579 { "-t", "--terminal", 120, 1 },
1580 { "-nw", "--no-window-system", 110, 0 },
1581 { "-nw", "--no-windows", 110, 0 },
1582 { "-batch", "--batch", 100, 0 },
1583 { "-script", "--script", 100, 1 },
1584 { "-daemon", "--daemon", 99, 0 },
1585 { "-help", "--help", 90, 0 },
1586 { "-nl", "--no-loadup", 70, 0 },
1587 { "-nsl", "--no-site-lisp", 65, 0 },
1588 /* -d must come last before the options handled in startup.el. */
1589 { "-d", "--display", 60, 1 },
1590 { "-display", 0, 60, 1 },
1591 /* Now for the options handled in `command-line' (startup.el). */
1592 /* (Note that to imply -nsl, -Q is partially handled here.) */
1593 { "-Q", "--quick", 55, 0 },
1594 { "-quick", 0, 55, 0 },
1595 { "-q", "--no-init-file", 50, 0 },
1596 { "-no-init-file", 0, 50, 0 },
1597 { "-no-site-file", "--no-site-file", 40, 0 },
1598 { "-u", "--user", 30, 1 },
1599 { "-user", 0, 30, 1 },
1600 { "-debug-init", "--debug-init", 20, 0 },
1601 { "-iconic", "--iconic", 15, 0 },
1602 { "-D", "--basic-display", 12, 0},
1603 { "-basic-display", 0, 12, 0},
1604 { "-nbc", "--no-blinking-cursor", 12, 0 },
1605 /* Now for the options handled in `command-line-1' (startup.el). */
1606 { "-nbi", "--no-bitmap-icon", 10, 0 },
1607 { "-bg", "--background-color", 10, 1 },
1608 { "-background", 0, 10, 1 },
1609 { "-fg", "--foreground-color", 10, 1 },
1610 { "-foreground", 0, 10, 1 },
1611 { "-bd", "--border-color", 10, 1 },
1612 { "-bw", "--border-width", 10, 1 },
1613 { "-ib", "--internal-border", 10, 1 },
1614 { "-ms", "--mouse-color", 10, 1 },
1615 { "-cr", "--cursor-color", 10, 1 },
1616 { "-fn", "--font", 10, 1 },
1617 { "-font", 0, 10, 1 },
1618 { "-fs", "--fullscreen", 10, 0 },
1619 { "-fw", "--fullwidth", 10, 0 },
1620 { "-fh", "--fullheight", 10, 0 },
1621 { "-mm", "--maximized", 10, 0 },
1622 { "-g", "--geometry", 10, 1 },
1623 { "-geometry", 0, 10, 1 },
1624 { "-T", "--title", 10, 1 },
1625 { "-title", 0, 10, 1 },
1626 { "-name", "--name", 10, 1 },
1627 { "-xrm", "--xrm", 10, 1 },
1628 { "-parent-id", "--parent-id", 10, 1 },
1629 { "-r", "--reverse-video", 5, 0 },
1631 { "-reverse", 0, 5, 0 },
1632 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1633 { "-vb", "--vertical-scroll-bars", 5, 0 },
1634 { "-color", "--color", 5, 0},
1635 { "-no-splash", "--no-splash", 3, 0 },
1636 { "-no-desktop", "--no-desktop", 3, 0 },
1638 { "-NSAutoLaunch", 0, 5, 1 },
1639 { "-NXAutoLaunch", 0, 5, 1 },
1640 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1641 { "-_NSMachLaunch", 0, 85, 1 },
1642 { "-MachLaunch", 0, 85, 1 },
1643 { "-macosx", 0, 85, 0 },
1644 { "-NSHost", 0, 85, 1 },
1646 /* These have the same priority as ordinary file name args,
1647 so they are not reordered with respect to those. */
1648 { "-L", "--directory", 0, 1 },
1649 { "-directory", 0, 0, 1 },
1650 { "-l", "--load", 0, 1 },
1651 { "-load", 0, 0, 1 },
1652 /* This has no longname, because using --scriptload confuses sort_args,
1653 because then the --script long option seems to match twice; ie
1654 you can't have a long option which is a prefix of another long
1655 option. In any case, this is entirely an internal option. */
1656 { "-scriptload", NULL
, 0, 1 },
1657 { "-f", "--funcall", 0, 1 },
1658 { "-funcall", 0, 0, 1 },
1659 { "-eval", "--eval", 0, 1 },
1660 { "-execute", "--execute", 0, 1 },
1661 { "-find-file", "--find-file", 0, 1 },
1662 { "-visit", "--visit", 0, 1 },
1663 { "-file", "--file", 0, 1 },
1664 { "-insert", "--insert", 0, 1 },
1666 { "-NXOpen", 0, 0, 1 },
1667 { "-NXOpenTemp", 0, 0, 1 },
1668 { "-NSOpen", 0, 0, 1 },
1669 { "-NSOpenTemp", 0, 0, 1 },
1670 { "-GSFilePath", 0, 0, 1 },
1672 /* This should be processed after ordinary file name args and the like. */
1673 { "-kill", "--kill", -10, 0 },
1676 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1677 so that the highest priority ones come first.
1678 Do not change the order of elements of equal priority.
1679 If an option takes an argument, keep it and its argument together.
1681 If an option that takes no argument appears more
1682 than once, eliminate all but one copy of it. */
1685 sort_args (int argc
, char **argv
)
1687 char **new = xmalloc (argc
* sizeof *new);
1688 /* For each element of argv,
1689 the corresponding element of options is:
1690 0 for an option that takes no arguments,
1691 1 for an option that takes one argument, etc.
1692 -1 for an ordinary non-option argument. */
1693 int *options
= xnmalloc (argc
, sizeof *options
);
1694 int *priority
= xnmalloc (argc
, sizeof *priority
);
1696 int incoming_used
= 1;
1700 /* Categorize all the options,
1701 and figure out which argv elts are option arguments. */
1702 for (from
= 1; from
< argc
; from
++)
1706 if (argv
[from
][0] == '-')
1710 /* If we have found "--", don't consider
1711 any more arguments as options. */
1712 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1714 /* Leave the "--", and everything following it, at the end. */
1715 for (; from
< argc
; from
++)
1717 priority
[from
] = -100;
1723 /* Look for a match with a known old-fashioned option. */
1724 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1725 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1727 options
[from
] = standard_args
[i
].nargs
;
1728 priority
[from
] = standard_args
[i
].priority
;
1729 if (from
+ standard_args
[i
].nargs
>= argc
)
1730 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1731 from
+= standard_args
[i
].nargs
;
1735 /* Look for a match with a known long option.
1736 MATCH is -1 if no match so far, -2 if two or more matches so far,
1737 >= 0 (the table index of the match) if just one match so far. */
1738 if (argv
[from
][1] == '-')
1740 char const *equals
= strchr (argv
[from
], '=');
1742 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1747 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1748 if (standard_args
[i
].longname
1749 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1758 /* If we found exactly one match, use that. */
1761 options
[from
] = standard_args
[match
].nargs
;
1762 priority
[from
] = standard_args
[match
].priority
;
1763 /* If --OPTION=VALUE syntax is used,
1764 this option uses just one argv element. */
1767 if (from
+ options
[from
] >= argc
)
1768 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1769 from
+= options
[from
];
1771 /* FIXME When match < 0, shouldn't there be some error,
1772 or at least indication to the user that there was a
1779 /* Copy the arguments, in order of decreasing priority, to NEW. */
1781 while (incoming_used
< argc
)
1784 int best_priority
= -9999;
1786 /* Find the highest priority remaining option.
1787 If several have equal priority, take the first of them. */
1788 for (from
= 1; from
< argc
; from
++)
1790 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1792 best_priority
= priority
[from
];
1795 /* Skip option arguments--they are tied to the options. */
1796 if (options
[from
] > 0)
1797 from
+= options
[from
];
1803 /* Copy the highest priority remaining option, with its args, to NEW.
1804 Unless it is a duplicate of the previous one. */
1805 if (! (options
[best
] == 0
1806 && ! strcmp (new[to
- 1], argv
[best
])))
1808 new[to
++] = argv
[best
];
1809 for (i
= 0; i
< options
[best
]; i
++)
1810 new[to
++] = argv
[best
+ i
+ 1];
1813 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1815 /* Clear out this option in ARGV. */
1817 for (i
= 0; i
< options
[best
]; i
++)
1818 argv
[best
+ i
+ 1] = 0;
1821 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1825 memcpy (argv
, new, sizeof (char *) * argc
);
1832 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1833 doc
: /* Exit the Emacs job and kill it.
1834 If ARG is an integer, return ARG as the exit program code.
1835 If ARG is a string, stuff it as keyboard input.
1837 This function is called upon receipt of the signals SIGTERM
1838 or SIGHUP, and upon SIGINT in batch mode.
1840 The value of `kill-emacs-hook', if not void,
1841 is a list of functions (of no args),
1842 all of which are called before Emacs is actually killed. */)
1845 struct gcpro gcpro1
;
1853 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1855 waiting_for_input
= 0;
1856 Frun_hooks (1, &Qkill_emacs_hook
);
1859 #ifdef HAVE_X_WINDOWS
1860 /* Transfer any clipboards we own to the clipboard manager. */
1861 x_clipboard_manager_save_all ();
1864 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1867 ns_release_autorelease_pool (ns_pool
);
1870 /* If we have an auto-save list file,
1871 kill it because we are exiting Emacs deliberately (not crashing).
1872 Do it after shut_down_emacs, which does an auto-save. */
1873 if (STRINGP (Vauto_save_list_file_name
))
1874 unlink (SSDATA (Vauto_save_list_file_name
));
1877 exit_code
= (XINT (arg
) < 0
1878 ? XINT (arg
) | INT_MIN
1879 : XINT (arg
) & INT_MAX
);
1881 exit_code
= EXIT_SUCCESS
;
1886 /* Perform an orderly shutdown of Emacs. Autosave any modified
1887 buffers, kill any child processes, clean up the terminal modes (if
1888 we're in the foreground), and other stuff like that. Don't perform
1889 any redisplay; this may be called when Emacs is shutting down in
1890 the background, or after its X connection has died.
1892 If SIG is a signal number, print a message for it.
1894 This is called by fatal signal handlers, X protocol error handlers,
1898 shut_down_emacs (int sig
, Lisp_Object stuff
)
1900 /* Prevent running of hooks from now on. */
1903 /* Don't update display from now on. */
1904 Vinhibit_redisplay
= Qt
;
1906 /* If we are controlling the terminal, reset terminal modes. */
1909 pid_t pgrp
= getpgrp ();
1910 pid_t tpgrp
= tcgetpgrp (0);
1911 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1913 reset_all_sys_modes ();
1914 if (sig
&& sig
!= SIGTERM
)
1916 static char const format
[] = "Fatal error %d: ";
1917 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1918 int buflen
= sprintf (buf
, format
, sig
);
1919 char const *sig_desc
= safe_strsignal (sig
);
1920 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1921 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1927 reset_all_sys_modes ();
1930 stuff_buffered_input (stuff
);
1932 inhibit_sentinels
= 1;
1933 kill_buffer_processes (Qnil
);
1934 Fdo_auto_save (Qt
, Qnil
);
1936 #ifdef CLASH_DETECTION
1937 unlock_all_files ();
1940 /* There is a tendency for a SIGIO signal to arrive within exit,
1941 and cause a SIGHUP because the input descriptor is already closed. */
1945 /* Do this only if terminating normally, we want glyph matrices
1946 etc. in a core dump. */
1947 if (sig
== 0 || sig
== SIGTERM
)
1949 check_glyph_memory ();
1950 check_message_stack ();
1958 ns_term_shutdown (sig
);
1962 xml_cleanup_parser ();
1976 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1977 doc
: /* Dump current state of Emacs into executable file FILENAME.
1978 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1979 This is used in the file `loadup.el' when building Emacs.
1981 You must run Emacs in batch mode in order to dump it. */)
1982 (Lisp_Object filename
, Lisp_Object symfile
)
1986 ptrdiff_t count
= SPECPDL_INDEX ();
1990 if (! noninteractive
)
1991 error ("Dumping Emacs works only in batch mode");
1995 /* Warn if the gap between BSS end and heap start is larger than this. */
1996 # define MAX_HEAP_BSS_DIFF (1024*1024)
1998 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2000 fprintf (stderr
, "**************************************************\n");
2001 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2002 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2004 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2005 fprintf (stderr
, "fail because of this. See the section about\n");
2006 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2007 fprintf (stderr
, "**************************************************\n");
2009 #endif /* GNU_LINUX */
2011 /* Bind `command-line-processed' to nil before dumping,
2012 so that the dumped Emacs will process its command line
2013 and set up to work with X windows if appropriate. */
2014 symbol
= intern ("command-line-processed");
2015 specbind (symbol
, Qnil
);
2017 CHECK_STRING (filename
);
2018 filename
= Fexpand_file_name (filename
, Qnil
);
2019 if (!NILP (symfile
))
2021 CHECK_STRING (symfile
);
2022 if (SCHARS (symfile
))
2023 symfile
= Fexpand_file_name (symfile
, Qnil
);
2027 Vpurify_flag
= Qnil
;
2030 set_time_zone_rule (dump_tz
);
2031 #ifndef LOCALTIME_CACHE
2032 /* Force a tz reload, since set_time_zone_rule doesn't. */
2038 /* Tell malloc where start of impure now is. */
2039 /* Also arrange for warnings when nearly out of space. */
2040 #ifndef SYSTEM_MALLOC
2042 /* On Windows, this was done before dumping, and that once suffices.
2043 Meanwhile, my_edata is not valid on Windows. */
2045 extern char my_edata
[];
2046 memory_warnings (my_edata
, malloc_warning
);
2048 #endif /* not WINDOWSNT */
2049 #endif /* not SYSTEM_MALLOC */
2050 #ifdef DOUG_LEA_MALLOC
2051 malloc_state_ptr
= malloc_get_state ();
2054 #ifdef USE_MMAP_FOR_BUFFERS
2057 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2058 #ifdef USE_MMAP_FOR_BUFFERS
2061 #ifdef DOUG_LEA_MALLOC
2062 free (malloc_state_ptr
);
2066 Vlibrary_cache
= Qnil
;
2068 #ifdef HAVE_WINDOW_SYSTEM
2069 reset_image_types ();
2074 return unbind_to (count
, Qnil
);
2077 #endif /* not CANNOT_DUMP */
2080 /* Recover from setlocale (LC_ALL, ""). */
2084 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2085 so that numbers are read and printed properly for Emacs Lisp. */
2086 setlocale (LC_NUMERIC
, "C");
2089 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2092 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2094 if (! EQ (*plocale
, desired_locale
))
2096 *plocale
= desired_locale
;
2097 setlocale (category
, (STRINGP (desired_locale
)
2098 ? SSDATA (desired_locale
)
2103 /* Set system time locale to match Vsystem_time_locale, if possible. */
2105 synchronize_system_time_locale (void)
2107 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2108 Vsystem_time_locale
);
2111 /* Set system messages locale to match Vsystem_messages_locale, if
2114 synchronize_system_messages_locale (void)
2117 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2118 Vsystem_messages_locale
);
2121 #endif /* HAVE_SETLOCALE */
2125 decode_env_path (const char *evarname
, const char *defalt
)
2127 const char *path
, *p
;
2128 Lisp_Object lpath
, element
, tem
;
2131 const char *emacs_dir
= egetenv ("emacs_dir");
2132 static const char *emacs_dir_env
= "%emacs_dir%/";
2133 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2136 /* It's okay to use getenv here, because this function is only used
2137 to initialize variables when Emacs starts up, and isn't called
2140 path
= getenv (evarname
);
2151 /* Ensure values from the environment use the proper directory separator. */
2154 char *path_copy
= alloca (strlen (path
) + 1);
2155 strcpy (path_copy
, path
);
2156 dostounix_filename (path_copy
, 0);
2163 p
= strchr (path
, SEPCHAR
);
2165 p
= path
+ strlen (path
);
2166 element
= (p
- path
? make_string (path
, p
- path
)
2167 : build_string ("."));
2169 /* Relative file names in the default path are interpreted as
2170 being relative to $emacs_dir. */
2171 if (emacs_dir
&& defaulted
2172 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2173 element
= Fexpand_file_name (Fsubstring (element
,
2174 make_number (emacs_dir_len
),
2176 build_string (emacs_dir
));
2179 /* Add /: to the front of the name
2180 if it would otherwise be treated as magic. */
2181 tem
= Ffind_file_name_handler (element
, Qt
);
2183 /* However, if the handler says "I'm safe",
2184 don't bother adding /:. */
2188 prop
= Fget (tem
, intern ("safe-magic"));
2194 element
= concat2 (build_string ("/:"), element
);
2196 lpath
= Fcons (element
, lpath
);
2202 return Fnreverse (lpath
);
2205 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2206 doc
: /* Return non-nil if the current emacs process is a daemon.
2207 If the daemon was given a name argument, return that name. */)
2212 return build_string (daemon_name
);
2219 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2220 doc
: /* Mark the Emacs daemon as being initialized.
2221 This finishes the daemonization process by doing the other half of detaching
2222 from the parent process and its tty file descriptors. */)
2229 error ("This function can only be called if emacs is run as a daemon");
2231 if (daemon_pipe
[1] < 0)
2232 error ("The daemon has already been initialized");
2234 if (NILP (Vafter_init_time
))
2235 error ("This function can only be called after loading the init files");
2237 /* Get rid of stdin, stdout and stderr. */
2238 nfd
= open ("/dev/null", O_RDWR
);
2240 err
|= dup2 (nfd
, 0) < 0;
2241 err
|= dup2 (nfd
, 1) < 0;
2242 err
|= dup2 (nfd
, 2) < 0;
2243 err
|= close (nfd
) != 0;
2245 /* Closing the pipe will notify the parent that it can exit.
2246 FIXME: In case some other process inherited the pipe, closing it here
2247 won't notify the parent because it's still open elsewhere, so we
2248 additionally send a byte, just to make sure the parent really exits.
2249 Instead, we should probably close the pipe in start-process and
2250 call-process to make sure the pipe is never inherited by
2252 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2253 err
|= close (daemon_pipe
[1]) != 0;
2254 /* Set it to an invalid value so we know we've already run this function. */
2255 daemon_pipe
[1] = -1;
2258 error ("I/O error during daemon initialization");
2263 syms_of_emacs (void)
2265 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2266 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2267 DEFSYM (Qkill_emacs
, "kill-emacs");
2268 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2271 defsubr (&Sdump_emacs
);
2274 defsubr (&Skill_emacs
);
2276 defsubr (&Sinvocation_name
);
2277 defsubr (&Sinvocation_directory
);
2278 defsubr (&Sdaemonp
);
2279 defsubr (&Sdaemon_initialized
);
2281 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2282 doc
: /* Args passed by shell to Emacs, as a list of strings.
2283 Many arguments are deleted from the list as they are processed. */);
2285 DEFVAR_LISP ("system-type", Vsystem_type
,
2286 doc
: /* The value is a symbol indicating the type of operating system you are using.
2288 `gnu' compiled for a GNU Hurd system.
2289 `gnu/linux' compiled for a GNU/Linux system.
2290 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2291 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2292 `ms-dos' compiled as an MS-DOS application.
2293 `windows-nt' compiled as a native W32 application.
2294 `cygwin' compiled using the Cygwin library.
2295 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2296 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2297 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2298 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2300 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2301 doc
: /* Value is string indicating configuration Emacs was built for.
2302 On MS-Windows, the value reflects the OS flavor and version on which
2303 Emacs is running. */);
2304 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2306 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2307 doc
: /* String containing the configuration options Emacs was built with. */);
2308 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2310 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2311 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2313 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2314 doc
: /* Hook run when `kill-emacs' is called.
2315 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2316 in other similar situations), functions placed on this hook should not
2317 expect to be able to interact with the user. To ask for confirmation,
2318 see `kill-emacs-query-functions' instead.
2320 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2321 `noninteractive' was non-nil. */);
2322 Vkill_emacs_hook
= Qnil
;
2324 DEFVAR_LISP ("path-separator", Vpath_separator
,
2325 doc
: /* String containing the character that separates directories in
2326 search paths, such as PATH and other similar environment variables. */);
2329 Vpath_separator
= make_string (&c
, 1);
2332 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2333 doc
: /* The program name that was used to run Emacs.
2334 Any directory names are omitted. */);
2336 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2337 doc
: /* The directory in which the Emacs executable was found, to run it.
2338 The value is nil if that directory's name is not known. */);
2340 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2341 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2342 In an installed Emacs, this is normally nil. It is non-nil if
2343 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2344 within the variable `invocation-directory' or its parent. For example,
2345 this is the case when running an uninstalled Emacs executable from its
2346 build directory. */);
2347 Vinstallation_directory
= Qnil
;
2349 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2350 doc
: /* System locale for messages. */);
2351 Vsystem_messages_locale
= Qnil
;
2353 DEFVAR_LISP ("previous-system-messages-locale",
2354 Vprevious_system_messages_locale
,
2355 doc
: /* Most recently used system locale for messages. */);
2356 Vprevious_system_messages_locale
= Qnil
;
2358 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2359 doc
: /* System locale for time. */);
2360 Vsystem_time_locale
= Qnil
;
2362 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2363 doc
: /* Most recently used system locale for time. */);
2364 Vprevious_system_time_locale
= Qnil
;
2366 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2367 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2368 Vbefore_init_time
= Qnil
;
2370 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2371 doc
: /* Value of `current-time' after loading the init files.
2372 This is nil during initialization. */);
2373 Vafter_init_time
= Qnil
;
2375 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2376 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2377 inhibit_x_resources
= 0;
2379 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2380 doc
: /* Short copyright string for this version of Emacs. */);
2381 Vemacs_copyright
= build_string (emacs_copyright
);
2383 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2384 doc
: /* Version numbers of this version of Emacs. */);
2385 Vemacs_version
= build_string (emacs_version
);
2387 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2388 doc
: /* Alist of dynamic libraries vs external files implementing them.
2389 Each element is a list (LIBRARY FILE...), where the car is a symbol
2390 representing a supported external library, and the rest are strings giving
2391 alternate filenames for that library.
2393 Emacs tries to load the library from the files in the order they appear on
2394 the list; if none is loaded, the running session of Emacs won't have access
2397 Note that image types `pbm' and `xbm' do not need entries in this variable
2398 because they do not depend on external libraries and are always available.
2400 Also note that this is not a generic facility for accessing external
2401 libraries; only those already known by Emacs will be loaded. */);
2402 Vdynamic_library_alist
= Qnil
;
2403 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2406 Vlibrary_cache
= Qnil
;
2407 staticpro (&Vlibrary_cache
);
2410 /* Make sure IS_DAEMON starts up as false. */