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>
36 #include <sys/socket.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
;
130 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
131 extern void malloc_enable_thread (void);
134 Lisp_Object Qfile_name_handler_alist
;
136 Lisp_Object Qrisky_local_variable
;
138 Lisp_Object Qkill_emacs
;
139 static Lisp_Object Qkill_emacs_hook
;
141 /* If true, Emacs should not attempt to use a window-specific code,
142 but instead should use the virtual terminal under which it was started. */
143 bool inhibit_window_system
;
145 /* If true, a filter or a sentinel is running. Tested to save the match
146 data on the first attempt to change it inside asynchronous code. */
147 bool running_asynch_code
;
149 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
150 /* If true, -d was specified, meaning we're using some window system. */
154 /* An address near the bottom of the stack.
155 Tells GC how to save a copy of the stack. */
158 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
159 /* The address where the heap starts (from the first sbrk (0) call). */
160 static void *my_heap_start
;
164 /* The gap between BSS end and heap start as far as we can tell. */
165 static uprintmax_t heap_bss_diff
;
168 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
171 On Cocoa, CoreFoundation lib fails in forked process:
172 http://developer.apple.com/ReleaseNotes/
173 CoreFoundation/CoreFoundation.html)
175 On Windows, a Cygwin fork child cannot access the USER subsystem.
177 We mark being in the exec'd process by a daemon name argument of
178 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
179 NAME is the original daemon name, if any. */
180 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
181 # define DAEMON_MUST_EXEC
184 /* True means running Emacs without interactive terminal. */
187 /* True means remove site-lisp directories from load-path. */
190 /* Name for the server started by the daemon.*/
191 static char *daemon_name
;
193 /* Pipe used to send exit notification to the daemon parent at
197 /* Save argv and argc. */
201 static void sort_args (int argc
, char **argv
);
202 static void syms_of_emacs (void);
204 /* C89 needs each string be at most 509 characters, so the usage
205 strings below are split to not overflow this limit. */
206 static char const *const usage_message
[] =
209 Run Emacs, the extensible, customizable, self-documenting real-time\n\
210 display editor. The recommended way to start Emacs for normal editing\n\
211 is with no options at all.\n\
213 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
214 read the main documentation for these command-line arguments.\n\
216 Initialization options:\n\
220 --batch do not do interactive display; implies -q\n\
221 --chdir DIR change to directory DIR\n\
222 --daemon start a server in the background\n\
223 --debug-init enable Emacs Lisp debugger for init file\n\
224 --display, -d DISPLAY use X server DISPLAY\n\
227 --no-desktop do not load a saved desktop\n\
228 --no-init-file, -q load neither ~/.emacs nor default.el\n\
229 --no-shared-memory, -nl do not use shared memory\n\
230 --no-site-file do not load site-start.el\n\
231 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
232 --no-splash do not display a splash screen on startup\n\
233 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
236 --quick, -Q equivalent to:\n\
237 -q --no-site-file --no-site-lisp --no-splash\n\
238 --script FILE run FILE as an Emacs Lisp script\n\
239 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
240 --user, -u USER load ~USER/.emacs instead of your own\n\
246 FILE visit FILE using find-file\n\
247 +LINE go to line LINE in next FILE\n\
248 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
249 --directory, -L DIR add DIR to variable load-path\n\
250 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
251 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
254 --file FILE visit FILE using find-file\n\
255 --find-file FILE visit FILE using find-file\n\
256 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
257 --insert FILE insert contents of FILE into current buffer\n\
258 --kill exit without asking for confirmation\n\
259 --load, -l FILE load Emacs Lisp FILE using the load function\n\
260 --visit FILE visit FILE using find-file\n\
266 --background-color, -bg COLOR window background color\n\
267 --basic-display, -D disable many display features;\n\
268 used for debugging Emacs\n\
269 --border-color, -bd COLOR main border color\n\
270 --border-width, -bw WIDTH width of main border\n\
273 --color, --color=MODE override color mode for character terminals;\n\
274 MODE defaults to `auto', and\n\
275 can also be `never', `always',\n\
276 or a mode name like `ansi8'\n\
277 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
278 --font, -fn FONT default font; must be fixed-width\n\
279 --foreground-color, -fg COLOR window foreground color\n\
282 --fullheight, -fh make the first frame high as the screen\n\
283 --fullscreen, -fs make the first frame fullscreen\n\
284 --fullwidth, -fw make the first frame wide as the screen\n\
285 --maximized, -mm make the first frame maximized\n\
286 --geometry, -g GEOMETRY window geometry\n\
289 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
290 --iconic start Emacs in iconified state\n\
291 --internal-border, -ib WIDTH width between text and main border\n\
292 --line-spacing, -lsp PIXELS additional space to put between lines\n\
293 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
294 --name NAME title for initial Emacs frame\n\
297 --no-blinking-cursor, -nbc disable blinking cursor\n\
298 --reverse-video, -r, -rv switch foreground and background\n\
299 --title, -T TITLE title for initial Emacs frame\n\
300 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
301 --xrm XRESOURCES set additional X resources\n\
302 --parent-id XID set parent window\n\
303 --help display this help and exit\n\
304 --version output version information and exit\n\
308 You can generally also specify long option names with a single -; for\n\
309 example, -batch as well as --batch. You can use any unambiguous\n\
310 abbreviation for a --option.\n\
312 Various environment variables and window system resources also affect\n\
313 Emacs' operation. See the main documentation.\n\
315 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
316 section of the Emacs manual or the file BUGS.\n"
320 /* True if handling a fatal error already. */
321 bool fatal_error_in_progress
;
324 /* NS autrelease pool, for memory management. */
325 static void *ns_pool
;
330 setlocale (int cat
, char const *locale
)
337 /* Report a fatal error due to signal SIG, output a backtrace of at
338 most BACKTRACE_LIMIT lines, and exit. */
340 terminate_due_to_signal (int sig
, int backtrace_limit
)
342 signal (sig
, SIG_DFL
);
343 totally_unblock_input ();
345 /* If fatal error occurs in code below, avoid infinite recursion. */
346 if (! fatal_error_in_progress
)
348 fatal_error_in_progress
= 1;
350 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
351 Fkill_emacs (make_number (sig
));
353 shut_down_emacs (sig
, Qnil
);
354 emacs_backtrace (backtrace_limit
);
357 /* Signal the same code; this time it will really be fatal.
358 Since we're in a signal handler, the signal is blocked, so we
359 have to unblock it if we want to really receive it. */
363 sigemptyset (&unblocked
);
364 sigaddset (&unblocked
, sig
);
365 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
371 /* This shouldn't be executed, but it prevents a warning. */
375 /* Code for dealing with Lisp access to the Unix command line. */
378 init_cmdargs (int argc
, char **argv
, int skip_args
)
381 Lisp_Object name
, dir
, handler
;
382 ptrdiff_t count
= SPECPDL_INDEX ();
383 Lisp_Object raw_name
;
388 raw_name
= build_string (argv
[0]);
390 /* Add /: to the front of the name
391 if it would otherwise be treated as magic. */
392 handler
= Ffind_file_name_handler (raw_name
, Qt
);
393 if (! NILP (handler
))
394 raw_name
= concat2 (build_string ("/:"), raw_name
);
396 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
397 Vinvocation_directory
= Ffile_name_directory (raw_name
);
399 /* If we got no directory in argv[0], search PATH to find where
400 Emacs actually came from. */
401 if (NILP (Vinvocation_directory
))
404 int yes
= openp (Vexec_path
, Vinvocation_name
,
405 Vexec_suffixes
, &found
, make_number (X_OK
));
408 /* Add /: to the front of the name
409 if it would otherwise be treated as magic. */
410 handler
= Ffind_file_name_handler (found
, Qt
);
411 if (! NILP (handler
))
412 found
= concat2 (build_string ("/:"), found
);
413 Vinvocation_directory
= Ffile_name_directory (found
);
417 if (!NILP (Vinvocation_directory
)
418 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
419 /* Emacs was started with relative path, like ./emacs.
421 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
423 Vinstallation_directory
= Qnil
;
425 if (!NILP (Vinvocation_directory
))
427 dir
= Vinvocation_directory
;
429 /* If we are running from the build directory, set DIR to the
430 src subdirectory of the Emacs tree, like on Posix
432 if (SBYTES (dir
) > sizeof ("/i386/") - 1
433 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
435 dir
= Fexpand_file_name (build_string ("../.."), dir
);
436 #else /* !WINDOWSNT */
438 name
= Fexpand_file_name (Vinvocation_name
, dir
);
441 Lisp_Object tem
, lib_src_exists
;
442 Lisp_Object etc_exists
, info_exists
;
444 /* See if dir contains subdirs for use by Emacs.
445 Check for the ones that would exist in a build directory,
446 not including lisp and info. */
447 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
448 lib_src_exists
= Ffile_exists_p (tem
);
451 /* MSDOS installations frequently remove lib-src, but we still
452 must set installation-directory, or else info won't find
453 its files (it uses the value of installation-directory). */
454 tem
= Fexpand_file_name (build_string ("info"), dir
);
455 info_exists
= Ffile_exists_p (tem
);
460 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
462 tem
= Fexpand_file_name (build_string ("etc"), dir
);
463 etc_exists
= Ffile_exists_p (tem
);
464 if (!NILP (etc_exists
))
466 Vinstallation_directory
467 = Ffile_name_as_directory (dir
);
472 /* See if dir's parent contains those subdirs. */
473 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
474 lib_src_exists
= Ffile_exists_p (tem
);
478 /* See the MSDOS commentary above. */
479 tem
= Fexpand_file_name (build_string ("../info"), dir
);
480 info_exists
= Ffile_exists_p (tem
);
485 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
487 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
488 etc_exists
= Ffile_exists_p (tem
);
489 if (!NILP (etc_exists
))
491 tem
= Fexpand_file_name (build_string (".."), dir
);
492 Vinstallation_directory
493 = Ffile_name_as_directory (tem
);
498 /* If the Emacs executable is actually a link,
499 next try the dir that the link points into. */
500 tem
= Ffile_symlink_p (name
);
503 name
= Fexpand_file_name (tem
, dir
);
504 dir
= Ffile_name_directory (name
);
511 Vcommand_line_args
= Qnil
;
513 for (i
= argc
- 1; i
>= 0; i
--)
515 if (i
== 0 || i
> skip_args
)
516 /* For the moment, we keep arguments as is in unibyte strings.
517 They are decoded in the function command-line after we know
518 locale-coding-system. */
520 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
523 unbind_to (count
, Qnil
);
526 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
527 doc
: /* Return the program name that was used to run Emacs.
528 Any directory names are omitted. */)
531 return Fcopy_sequence (Vinvocation_name
);
534 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
536 doc
: /* Return the directory name in which the Emacs executable was located. */)
539 return Fcopy_sequence (Vinvocation_directory
);
544 /* A valid but unlikely value for the TZ environment value.
545 It is OK (though a bit slower) if the user actually chooses this value. */
546 static char const dump_tz
[] = "UtC0";
549 /* Test whether the next argument in ARGV matches SSTR or a prefix of
550 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
551 (the argument is supposed to have a value) store in *VALPTR either
552 the next argument or the portion of this one after the equal sign.
553 ARGV is read starting at position *SKIPPTR; this index is advanced
554 by the number of arguments used.
556 Too bad we can't just use getopt for all of this, but we don't have
557 enough information to do it right. */
560 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
561 int minlen
, char **valptr
, int *skipptr
)
567 /* Don't access argv[argc]; give up in advance. */
568 if (argc
<= *skipptr
+ 1)
571 arg
= argv
[*skipptr
+1];
574 if (strcmp (arg
, sstr
) == 0)
578 *valptr
= argv
[*skipptr
+2];
585 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
586 ? p
- arg
: strlen (arg
));
587 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
589 else if (valptr
== NULL
)
600 else if (argv
[*skipptr
+2] != NULL
)
602 *valptr
= argv
[*skipptr
+2];
612 #ifdef DOUG_LEA_MALLOC
614 /* malloc can be invoked even before main (e.g. by the dynamic
615 linker), so the dumped malloc state must be restored as early as
616 possible using this special hook. */
619 malloc_initialize_hook (void)
623 if (!malloc_using_checking
)
624 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
625 ignored if the heap to be restored was constructed without
626 malloc checking. Can't use unsetenv, since that calls malloc. */
630 for (p
= environ
; p
&& *p
; p
++)
631 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
640 malloc_set_state (malloc_state_ptr
);
641 #ifndef XMALLOC_OVERRUN_CHECK
642 free (malloc_state_ptr
);
647 if (my_heap_start
== 0)
648 my_heap_start
= sbrk (0);
649 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
653 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
655 #endif /* DOUG_LEA_MALLOC */
657 /* Close standard output and standard error, reporting any write
658 errors as best we can. This is intended for use with atexit. */
660 close_output_streams (void)
662 if (close_stream (stdout
) != 0)
664 emacs_perror ("Write error to standard output");
665 _exit (EXIT_FAILURE
);
668 if (close_stream (stderr
) != 0)
669 _exit (EXIT_FAILURE
);
674 main (int argc
, char **argv
)
679 char stack_bottom_variable
;
680 bool do_initial_setlocale
;
683 #ifdef HAVE_SETRLIMIT
689 #ifdef DAEMON_MUST_EXEC
698 #ifdef G_SLICE_ALWAYS_MALLOC
699 /* This is used by the Cygwin build. */
700 xputenv ("G_SLICE=always-malloc");
706 extern char my_endbss
[];
707 extern char *my_endbss_static
;
709 if (my_heap_start
== 0)
710 my_heap_start
= sbrk (0);
712 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
716 #if defined WINDOWSNT || defined HAVE_NTGUI
717 /* Set global variables used to detect Windows version. Do this as
718 early as possible. (unexw32.c calls this function as well, but
719 the additional call here is harmless.) */
720 cache_system_info ();
723 #ifdef RUN_TIME_REMAP
725 run_time_remap (argv
[0]);
728 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
731 unexec_init_emacs_zone ();
734 atexit (close_output_streams
);
736 sort_args (argc
, argv
);
738 while (argv
[argc
]) argc
++;
740 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
742 const char *version
, *copyright
;
745 Lisp_Object tem
, tem2
;
746 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
747 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
750 fprintf (stderr
, "Invalid value of `emacs-version'\n");
755 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
760 version
= SSDATA (tem
);
761 copyright
= SSDATA (tem2
);
766 version
= emacs_version
;
767 copyright
= emacs_copyright
;
769 printf ("GNU Emacs %s\n", version
);
770 printf ("%s\n", copyright
);
771 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
772 printf ("You may redistribute copies of Emacs\n");
773 printf ("under the terms of the GNU General Public License.\n");
774 printf ("For more information about these matters, ");
775 printf ("see the file named COPYING.\n");
779 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
780 if (chdir (ch_to_dir
) == -1)
782 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
783 argv
[0], ch_to_dir
, strerror (errno
));
787 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
788 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
790 #ifdef HAVE_PERSONALITY_LINUX32
791 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
793 /* Set this so we only do this once. */
794 xputenv ("EMACS_HEAP_EXEC=true");
796 /* A flag to turn off address randomization which is introduced
797 in linux kernel shipped with fedora core 4 */
798 #define ADD_NO_RANDOMIZE 0x0040000
799 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
800 #undef ADD_NO_RANDOMIZE
802 execvp (argv
[0], argv
);
804 /* If the exec fails, try to dump anyway. */
805 emacs_perror (argv
[0]);
807 #endif /* HAVE_PERSONALITY_LINUX32 */
809 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
810 /* Extend the stack space available.
811 Don't do that if dumping, since some systems (e.g. DJGPP)
812 might define a smaller stack limit at that time. */
815 && (!noninteractive
|| initialized
)
817 && !getrlimit (RLIMIT_STACK
, &rlim
))
820 extern size_t re_max_failures
;
821 /* Approximate the amount regex.c needs per unit of re_max_failures. */
822 int ratio
= 20 * sizeof (char *);
823 /* Then add 33% to cover the size of the smaller stacks that regex.c
824 successively allocates and discards, on its way to the maximum. */
826 /* Add in some extra to cover
827 what we're likely to use for other reasons. */
828 newlim
= re_max_failures
* ratio
+ 200000;
830 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
831 stack allocation routine for new process that the allocation
832 fails if stack limit is not on page boundary. So, round up the
833 new limit to page boundary. */
834 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
836 if (newlim
> rlim
.rlim_max
)
838 newlim
= rlim
.rlim_max
;
839 /* Don't let regex.c overflow the stack we have. */
840 re_max_failures
= (newlim
- 200000) / ratio
;
842 if (rlim
.rlim_cur
< newlim
)
843 rlim
.rlim_cur
= newlim
;
845 setrlimit (RLIMIT_STACK
, &rlim
);
847 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
849 /* Record (approximately) where the stack begins. */
850 stack_bottom
= &stack_bottom_variable
;
854 #ifndef SYSTEM_MALLOC
855 /* Arrange to get warning messages as memory fills up. */
856 memory_warnings (0, malloc_warning
);
858 /* Call malloc at least once, to run malloc_initialize_hook.
859 Also call realloc and free for consistency. */
860 free (realloc (malloc (4), 4));
862 #endif /* not SYSTEM_MALLOC */
864 #if defined (MSDOS) || defined (WINDOWSNT)
865 /* We do all file input/output as binary files. When we need to translate
866 newlines, we do that manually. */
868 #endif /* MSDOS || WINDOWSNT */
871 if (!isatty (fileno (stdin
)))
872 setmode (fileno (stdin
), O_BINARY
);
873 if (!isatty (fileno (stdout
)))
876 setmode (fileno (stdout
), O_BINARY
);
880 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
881 The build procedure uses this while dumping, to ensure that the
882 dumped Emacs does not have its system locale tables initialized,
883 as that might cause screwups when the dumped Emacs starts up. */
885 char *lc_all
= getenv ("LC_ALL");
886 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
889 /* Set locale now, so that initial error messages are localized properly.
890 fixup_locale must wait until later, since it builds strings. */
891 if (do_initial_setlocale
)
892 setlocale (LC_ALL
, "");
894 inhibit_window_system
= 0;
896 /* Handle the -t switch, which specifies filename to use as terminal. */
900 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
905 result
= emacs_open (term
, O_RDWR
, 0);
906 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
908 char *errstring
= strerror (errno
);
909 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
914 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
917 fprintf (stderr
, "Using %s\n", term
);
918 #ifdef HAVE_WINDOW_SYSTEM
919 inhibit_window_system
= 1; /* -t => -nw */
926 /* Command line option --no-windows is deprecated and thus not mentioned
927 in the manual and usage information. */
928 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
929 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
930 inhibit_window_system
= 1;
932 /* Handle the -batch switch, which means don't do interactive display. */
934 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
937 Vundo_outer_limit
= Qnil
;
939 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
941 noninteractive
= 1; /* Set batch mode. */
942 /* Convert --script to -scriptload, un-skip it, and sort again
943 so that it will be handled in proper sequence. */
944 /* FIXME broken for --script=FILE - is that supposed to work? */
945 argv
[skip_args
- 1] = (char *) "-scriptload";
947 sort_args (argc
, argv
);
950 /* Handle the --help option, which gives a usage message. */
951 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
954 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
955 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
956 fputs (usage_message
[i
], stdout
);
960 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
961 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
966 /* Start as a daemon: fork a new child process which will run the
967 rest of the initialization code, then exit.
969 Detaching a daemon requires the following steps:
973 - close the tty file-descriptors
975 We only want to do the last 2 steps once the daemon is ready to
976 serve requests, i.e. after loading .emacs (initialization).
977 OTOH initialization may start subprocesses (e.g. ispell) and these
978 should be run from the proper process (the one that will end up
979 running as daemon) and with the proper "session id" in order for
980 them to keep working after detaching, so fork and setsid need to be
981 performed before initialization.
983 We want to avoid exiting before the server socket is ready, so
984 use a pipe for synchronization. The parent waits for the child
985 to close its end of the pipe (using `daemon-initialized')
987 if (emacs_pipe (daemon_pipe
) != 0)
989 fprintf (stderr
, "Cannot pipe!\n");
993 #ifndef DAEMON_MUST_EXEC
995 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
996 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
997 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1000 #else /* DAEMON_MUST_EXEC */
1001 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1002 f
= fork (); /* in orig */
1004 f
= 0; /* in exec'd */
1005 #endif /* !DAEMON_MUST_EXEC */
1011 /* Close unused writing end of the pipe. */
1012 emacs_close (daemon_pipe
[1]);
1014 /* Just wait for the child to close its end of the pipe. */
1017 retval
= read (daemon_pipe
[0], &buf
, 1);
1019 while (retval
== -1 && errno
== EINTR
);
1023 fprintf (stderr
, "Error reading status from child\n");
1026 else if (retval
== 0)
1028 fprintf (stderr
, "Error: server did not start correctly\n");
1032 emacs_close (daemon_pipe
[0]);
1037 emacs_perror ("fork");
1038 exit (EXIT_CANCELED
);
1041 #ifdef DAEMON_MUST_EXEC
1043 /* In orig process, forked as child, OR in exec'd. */
1044 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1045 { /* In orig, child: now exec w/special daemon name. */
1048 snprintf (fdStr
, sizeof fdStr
,
1049 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1050 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1052 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1054 fprintf (stderr
, "daemon: child name too long\n");
1055 exit (EXIT_CANNOT_INVOKE
);
1058 argv
[skip_args
] = fdStr
;
1060 execvp (argv
[0], argv
);
1061 emacs_perror (argv
[0]);
1062 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1065 /* In exec'd: parse special dname into pipe and name info. */
1066 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1067 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1069 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1070 exit (EXIT_CANNOT_INVOKE
);
1072 dname_arg2
[0] = '\0';
1073 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1075 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1077 #endif /* DAEMON_MUST_EXEC */
1080 daemon_name
= xstrdup (dname_arg
);
1081 /* Close unused reading end of the pipe. */
1082 emacs_close (daemon_pipe
[0]);
1086 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1091 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1092 # ifndef CANNOT_DUMP
1093 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1094 that causes an infinite recursive loop with FreeBSD. But do make
1095 it thread-safe when creating emacs, otherwise bootstrap-emacs
1096 fails on Cygwin. See Bug#14569. */
1097 if (!noninteractive
|| initialized
)
1099 malloc_enable_thread ();
1102 init_signals (dumping
);
1104 noninteractive1
= noninteractive
;
1106 /* Perform basic initializations (not merely interning symbols). */
1113 init_charset_once ();
1114 init_coding_once ();
1115 init_syntax_once (); /* Create standard syntax table. */
1116 init_category_once (); /* Create standard category table. */
1117 init_casetab_once (); /* Must be done before init_buffer_once. */
1118 init_buffer_once (); /* Create buffer table and some buffers. */
1119 init_minibuf_once (); /* Create list of minibuffers. */
1120 /* Must precede init_window_once. */
1122 /* Call syms_of_xfaces before init_window_once because that
1123 function creates Vterminal_frame. Termcap frames now use
1124 faces, and the face implementation uses some symbols as
1127 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1128 be better to arrange things not to have this dependency. */
1130 /* Call syms_of_keyboard before init_window_once because
1131 keyboard sets up symbols that include some face names that
1132 the X support will want to use. This can happen when
1133 CANNOT_DUMP is defined. */
1134 syms_of_keyboard ();
1136 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1138 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1140 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1142 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1144 /* Before syms_of_coding because it initializes Qcharsetp. */
1146 /* Before init_window_once, because it sets up the
1147 Vcoding_system_hash_table. */
1148 syms_of_coding (); /* This should be after syms_of_fileio. */
1150 init_window_once (); /* Init the window system. */
1151 #ifdef HAVE_WINDOW_SYSTEM
1152 init_fringe_once (); /* Swap bitmaps if necessary. */
1153 #endif /* HAVE_WINDOW_SYSTEM */
1158 if (do_initial_setlocale
)
1161 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1162 Vsystem_time_locale
= Vprevious_system_time_locale
;
1167 running_asynch_code
= 0;
1171 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1174 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1177 ns_pool
= ns_alloc_autorelease_pool ();
1178 if (!noninteractive
)
1180 #ifdef NS_IMPL_COCOA
1181 if (skip_args
< argc
)
1183 /* FIXME: Do the right thing if getenv returns NULL, or if
1185 if (!strncmp (argv
[skip_args
], "-psn", 4))
1188 chdir (getenv ("HOME"));
1190 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1193 chdir (getenv ("HOME"));
1198 #endif /* HAVE_NS */
1200 #ifdef HAVE_X_WINDOWS
1201 /* Stupid kludge to catch command-line display spec. We can't
1202 handle this argument entirely in window system dependent code
1203 because we don't even know which window system dependent code
1204 to run until we've recognized this argument. */
1206 char *displayname
= 0;
1207 int count_before
= skip_args
;
1209 /* Skip any number of -d options, but only use the last one. */
1212 int count_before_this
= skip_args
;
1214 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1216 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1221 count_before
= count_before_this
;
1224 /* If we have the form --display=NAME,
1225 convert it into -d name.
1226 This requires inserting a new element into argv. */
1227 if (displayname
&& count_before
< skip_args
)
1229 if (skip_args
== count_before
+ 1)
1231 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1232 (argc
- (count_before
+ 2)) * sizeof *argv
);
1233 argv
[count_before
+ 2] = displayname
;
1236 argv
[count_before
+ 1] = (char *) "-d";
1241 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1242 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1246 /* Don't actually discard this arg. */
1247 skip_args
= count_before
;
1249 #else /* !HAVE_X_WINDOWS */
1252 int count_before
= skip_args
;
1254 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1255 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1258 skip_args
= count_before
;
1262 /* argmatch must not be used after here,
1263 except when building temacs
1264 because the -d argument has not been skipped in skip_args. */
1267 /* Call early 'cause init_environment needs it. */
1269 /* Set defaults for several environment variables. */
1271 init_environment (argc
, argv
, skip_args
);
1276 #ifdef HAVE_GFILENOTIFY
1277 globals_of_gfilenotify ();
1282 #ifdef HAVE_W32NOTIFY
1283 globals_of_w32notify ();
1285 /* Initialize environment from registry settings. */
1286 init_environment (argv
);
1287 init_ntproc (dumping
); /* must precede init_editfns. */
1290 /* Initialize and GC-protect Vinitial_environment and
1291 Vprocess_environment before set_initial_environment fills them
1294 syms_of_callproc ();
1295 /* egetenv is a pretty low-level facility, which may get called in
1296 many circumstances; it seems flimsy to put off initializing it
1297 until calling init_callproc. Do not do it when dumping. */
1299 set_initial_environment ();
1301 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1302 if this is not done. Do it after set_global_environment so that we
1303 don't pollute Vglobal_environment. */
1304 /* Setting LANG here will defeat the startup locale processing... */
1309 init_buffer (); /* Init default directory of main buffer. */
1311 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1312 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1316 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1317 Lisp_Object old_log_max
;
1318 old_log_max
= Vmessage_log_max
;
1319 XSETFASTINT (Vmessage_log_max
, 0);
1320 message_dolog ("", 0, 1, 0);
1321 Vmessage_log_max
= old_log_max
;
1324 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1328 /* Check to see if Emacs has been installed correctly. */
1329 check_windows_init_file ();
1332 /* Intern the names of all standard functions and variables;
1333 define standard keys. */
1337 /* The basic levels of Lisp must come first. Note that
1338 syms_of_data and some others have already been called. */
1343 syms_of_floatfns ();
1346 syms_of_bytecode ();
1348 syms_of_casefiddle ();
1350 syms_of_category ();
1352 syms_of_character ();
1359 syms_of_filelock ();
1362 /* syms_of_keymap (); */
1370 syms_of_terminal ();
1376 syms_of_textprop ();
1377 syms_of_composite ();
1380 #endif /* WINDOWSNT */
1387 #ifdef HAVE_WINDOW_SYSTEM
1390 #endif /* HAVE_WINDOW_SYSTEM */
1391 #ifdef HAVE_X_WINDOWS
1396 syms_of_xsettings ();
1403 #endif /* HAVE_X_WINDOWS */
1416 #endif /* HAVE_NTGUI */
1418 #if defined WINDOWSNT || defined HAVE_NTGUI
1419 syms_of_w32select ();
1426 syms_of_win16select ();
1433 syms_of_nsselect ();
1435 #endif /* HAVE_NS */
1441 #ifdef HAVE_GFILENOTIFY
1442 syms_of_gfilenotify ();
1443 #endif /* HAVE_GFILENOTIFY */
1447 #endif /* HAVE_INOTIFY */
1450 syms_of_dbusbind ();
1451 #endif /* HAVE_DBUS */
1455 #ifdef HAVE_W32NOTIFY
1456 syms_of_w32notify ();
1457 #endif /* HAVE_W32NOTIFY */
1458 #endif /* WINDOWSNT */
1460 syms_of_profiler ();
1462 keys_of_casefiddle ();
1465 keys_of_keyboard ();
1471 /* Initialization that must be done even if the global variable
1472 initialized is non zero. */
1474 globals_of_w32font ();
1475 globals_of_w32fns ();
1476 globals_of_w32menu ();
1477 #endif /* HAVE_NTGUI */
1479 #if defined WINDOWSNT || defined HAVE_NTGUI
1480 globals_of_w32select ();
1486 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1487 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1488 init_keyboard (); /* This too must precede init_sys_modes. */
1489 if (!noninteractive
)
1490 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1492 #ifdef HAVE_WINDOW_SYSTEM
1494 #endif /* HAVE_WINDOW_SYSTEM */
1502 /* Handle -l loadup, args passed by Makefile. */
1503 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1504 Vtop_level
= list2 (intern_c_string ("load"), build_string (file
));
1505 /* Unless next switch is -nl, load "loadup.el" first thing. */
1507 Vtop_level
= list2 (intern_c_string ("load"),
1508 build_string ("loadup.el"));
1515 /* If the execution TZ happens to be the same as the dump TZ,
1516 change it to some other value and then change it back,
1517 to force the underlying implementation to reload the TZ info.
1518 This is needed on implementations that load TZ info from files,
1519 since the TZ file contents may differ between dump and execution. */
1520 char *tz
= getenv ("TZ");
1521 if (tz
&& !strcmp (tz
, dump_tz
))
1531 /* Set up for profiling. This is known to work on FreeBSD,
1532 GNU/Linux and MinGW. It might work on some other systems too.
1533 Give it a try and tell us if it works on your system. To compile
1534 for profiling, use the configure option --enable-profiling. */
1535 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1540 extern unsigned char etext
asm ("etext");
1546 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1555 #ifdef LOCALTIME_CACHE
1556 /* Some versions of localtime have a bug. They cache the value of the time
1557 zone rather than looking it up every time. Since localtime() is
1558 called to bolt the undumping time into the undumped emacs, this
1559 results in localtime ignoring the TZ environment variable.
1560 This flushes the new TZ value into localtime. */
1562 #endif /* defined (LOCALTIME_CACHE) */
1564 /* Enter editor command loop. This never returns. */
1570 /* Sort the args so we can find the most important ones
1571 at the beginning of argv. */
1573 /* First, here's a table of all the standard options. */
1575 struct standard_args
1578 const char *longname
;
1583 static const struct standard_args standard_args
[] =
1585 { "-version", "--version", 150, 0 },
1586 { "-chdir", "--chdir", 130, 1 },
1587 { "-t", "--terminal", 120, 1 },
1588 { "-nw", "--no-window-system", 110, 0 },
1589 { "-nw", "--no-windows", 110, 0 },
1590 { "-batch", "--batch", 100, 0 },
1591 { "-script", "--script", 100, 1 },
1592 { "-daemon", "--daemon", 99, 0 },
1593 { "-help", "--help", 90, 0 },
1594 { "-nl", "--no-loadup", 70, 0 },
1595 { "-nsl", "--no-site-lisp", 65, 0 },
1596 /* -d must come last before the options handled in startup.el. */
1597 { "-d", "--display", 60, 1 },
1598 { "-display", 0, 60, 1 },
1599 /* Now for the options handled in `command-line' (startup.el). */
1600 /* (Note that to imply -nsl, -Q is partially handled here.) */
1601 { "-Q", "--quick", 55, 0 },
1602 { "-quick", 0, 55, 0 },
1603 { "-q", "--no-init-file", 50, 0 },
1604 { "-no-init-file", 0, 50, 0 },
1605 { "-no-site-file", "--no-site-file", 40, 0 },
1606 { "-u", "--user", 30, 1 },
1607 { "-user", 0, 30, 1 },
1608 { "-debug-init", "--debug-init", 20, 0 },
1609 { "-iconic", "--iconic", 15, 0 },
1610 { "-D", "--basic-display", 12, 0},
1611 { "-basic-display", 0, 12, 0},
1612 { "-nbc", "--no-blinking-cursor", 12, 0 },
1613 /* Now for the options handled in `command-line-1' (startup.el). */
1614 { "-nbi", "--no-bitmap-icon", 10, 0 },
1615 { "-bg", "--background-color", 10, 1 },
1616 { "-background", 0, 10, 1 },
1617 { "-fg", "--foreground-color", 10, 1 },
1618 { "-foreground", 0, 10, 1 },
1619 { "-bd", "--border-color", 10, 1 },
1620 { "-bw", "--border-width", 10, 1 },
1621 { "-ib", "--internal-border", 10, 1 },
1622 { "-ms", "--mouse-color", 10, 1 },
1623 { "-cr", "--cursor-color", 10, 1 },
1624 { "-fn", "--font", 10, 1 },
1625 { "-font", 0, 10, 1 },
1626 { "-fs", "--fullscreen", 10, 0 },
1627 { "-fw", "--fullwidth", 10, 0 },
1628 { "-fh", "--fullheight", 10, 0 },
1629 { "-mm", "--maximized", 10, 0 },
1630 { "-g", "--geometry", 10, 1 },
1631 { "-geometry", 0, 10, 1 },
1632 { "-T", "--title", 10, 1 },
1633 { "-title", 0, 10, 1 },
1634 { "-name", "--name", 10, 1 },
1635 { "-xrm", "--xrm", 10, 1 },
1636 { "-parent-id", "--parent-id", 10, 1 },
1637 { "-r", "--reverse-video", 5, 0 },
1639 { "-reverse", 0, 5, 0 },
1640 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1641 { "-vb", "--vertical-scroll-bars", 5, 0 },
1642 { "-color", "--color", 5, 0},
1643 { "-no-splash", "--no-splash", 3, 0 },
1644 { "-no-desktop", "--no-desktop", 3, 0 },
1646 { "-NSAutoLaunch", 0, 5, 1 },
1647 { "-NXAutoLaunch", 0, 5, 1 },
1648 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1649 { "-_NSMachLaunch", 0, 85, 1 },
1650 { "-MachLaunch", 0, 85, 1 },
1651 { "-macosx", 0, 85, 0 },
1652 { "-NSHost", 0, 85, 1 },
1654 /* These have the same priority as ordinary file name args,
1655 so they are not reordered with respect to those. */
1656 { "-L", "--directory", 0, 1 },
1657 { "-directory", 0, 0, 1 },
1658 { "-l", "--load", 0, 1 },
1659 { "-load", 0, 0, 1 },
1660 /* This has no longname, because using --scriptload confuses sort_args,
1661 because then the --script long option seems to match twice; ie
1662 you can't have a long option which is a prefix of another long
1663 option. In any case, this is entirely an internal option. */
1664 { "-scriptload", NULL
, 0, 1 },
1665 { "-f", "--funcall", 0, 1 },
1666 { "-funcall", 0, 0, 1 },
1667 { "-eval", "--eval", 0, 1 },
1668 { "-execute", "--execute", 0, 1 },
1669 { "-find-file", "--find-file", 0, 1 },
1670 { "-visit", "--visit", 0, 1 },
1671 { "-file", "--file", 0, 1 },
1672 { "-insert", "--insert", 0, 1 },
1674 { "-NXOpen", 0, 0, 1 },
1675 { "-NXOpenTemp", 0, 0, 1 },
1676 { "-NSOpen", 0, 0, 1 },
1677 { "-NSOpenTemp", 0, 0, 1 },
1678 { "-GSFilePath", 0, 0, 1 },
1680 /* This should be processed after ordinary file name args and the like. */
1681 { "-kill", "--kill", -10, 0 },
1684 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1685 so that the highest priority ones come first.
1686 Do not change the order of elements of equal priority.
1687 If an option takes an argument, keep it and its argument together.
1689 If an option that takes no argument appears more
1690 than once, eliminate all but one copy of it. */
1693 sort_args (int argc
, char **argv
)
1695 char **new = xmalloc (argc
* sizeof *new);
1696 /* For each element of argv,
1697 the corresponding element of options is:
1698 0 for an option that takes no arguments,
1699 1 for an option that takes one argument, etc.
1700 -1 for an ordinary non-option argument. */
1701 int *options
= xnmalloc (argc
, sizeof *options
);
1702 int *priority
= xnmalloc (argc
, sizeof *priority
);
1704 int incoming_used
= 1;
1708 /* Categorize all the options,
1709 and figure out which argv elts are option arguments. */
1710 for (from
= 1; from
< argc
; from
++)
1714 if (argv
[from
][0] == '-')
1718 /* If we have found "--", don't consider
1719 any more arguments as options. */
1720 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1722 /* Leave the "--", and everything following it, at the end. */
1723 for (; from
< argc
; from
++)
1725 priority
[from
] = -100;
1731 /* Look for a match with a known old-fashioned option. */
1732 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1733 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1735 options
[from
] = standard_args
[i
].nargs
;
1736 priority
[from
] = standard_args
[i
].priority
;
1737 if (from
+ standard_args
[i
].nargs
>= argc
)
1738 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1739 from
+= standard_args
[i
].nargs
;
1743 /* Look for a match with a known long option.
1744 MATCH is -1 if no match so far, -2 if two or more matches so far,
1745 >= 0 (the table index of the match) if just one match so far. */
1746 if (argv
[from
][1] == '-')
1748 char const *equals
= strchr (argv
[from
], '=');
1750 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1755 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1756 if (standard_args
[i
].longname
1757 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1766 /* If we found exactly one match, use that. */
1769 options
[from
] = standard_args
[match
].nargs
;
1770 priority
[from
] = standard_args
[match
].priority
;
1771 /* If --OPTION=VALUE syntax is used,
1772 this option uses just one argv element. */
1775 if (from
+ options
[from
] >= argc
)
1776 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1777 from
+= options
[from
];
1779 /* FIXME When match < 0, shouldn't there be some error,
1780 or at least indication to the user that there was a
1787 /* Copy the arguments, in order of decreasing priority, to NEW. */
1789 while (incoming_used
< argc
)
1792 int best_priority
= -9999;
1794 /* Find the highest priority remaining option.
1795 If several have equal priority, take the first of them. */
1796 for (from
= 1; from
< argc
; from
++)
1798 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1800 best_priority
= priority
[from
];
1803 /* Skip option arguments--they are tied to the options. */
1804 if (options
[from
] > 0)
1805 from
+= options
[from
];
1811 /* Copy the highest priority remaining option, with its args, to NEW.
1812 Unless it is a duplicate of the previous one. */
1813 if (! (options
[best
] == 0
1814 && ! strcmp (new[to
- 1], argv
[best
])))
1816 new[to
++] = argv
[best
];
1817 for (i
= 0; i
< options
[best
]; i
++)
1818 new[to
++] = argv
[best
+ i
+ 1];
1821 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1823 /* Clear out this option in ARGV. */
1825 for (i
= 0; i
< options
[best
]; i
++)
1826 argv
[best
+ i
+ 1] = 0;
1829 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1833 memcpy (argv
, new, sizeof (char *) * argc
);
1840 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1841 doc
: /* Exit the Emacs job and kill it.
1842 If ARG is an integer, return ARG as the exit program code.
1843 If ARG is a string, stuff it as keyboard input.
1845 This function is called upon receipt of the signals SIGTERM
1846 or SIGHUP, and upon SIGINT in batch mode.
1848 The value of `kill-emacs-hook', if not void,
1849 is a list of functions (of no args),
1850 all of which are called before Emacs is actually killed. */)
1853 struct gcpro gcpro1
;
1861 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1863 waiting_for_input
= 0;
1864 Frun_hooks (1, &Qkill_emacs_hook
);
1867 #ifdef HAVE_X_WINDOWS
1868 /* Transfer any clipboards we own to the clipboard manager. */
1869 x_clipboard_manager_save_all ();
1872 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1875 ns_release_autorelease_pool (ns_pool
);
1878 /* If we have an auto-save list file,
1879 kill it because we are exiting Emacs deliberately (not crashing).
1880 Do it after shut_down_emacs, which does an auto-save. */
1881 if (STRINGP (Vauto_save_list_file_name
))
1883 Lisp_Object listfile
;
1884 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1885 unlink (SSDATA (listfile
));
1889 exit_code
= (XINT (arg
) < 0
1890 ? XINT (arg
) | INT_MIN
1891 : XINT (arg
) & INT_MAX
);
1893 exit_code
= EXIT_SUCCESS
;
1898 /* Perform an orderly shutdown of Emacs. Autosave any modified
1899 buffers, kill any child processes, clean up the terminal modes (if
1900 we're in the foreground), and other stuff like that. Don't perform
1901 any redisplay; this may be called when Emacs is shutting down in
1902 the background, or after its X connection has died.
1904 If SIG is a signal number, print a message for it.
1906 This is called by fatal signal handlers, X protocol error handlers,
1910 shut_down_emacs (int sig
, Lisp_Object stuff
)
1912 /* Prevent running of hooks from now on. */
1915 /* Don't update display from now on. */
1916 Vinhibit_redisplay
= Qt
;
1918 /* If we are controlling the terminal, reset terminal modes. */
1921 pid_t pgrp
= getpgrp ();
1922 pid_t tpgrp
= tcgetpgrp (0);
1923 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1925 reset_all_sys_modes ();
1926 if (sig
&& sig
!= SIGTERM
)
1928 static char const format
[] = "Fatal error %d: ";
1929 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1930 int buflen
= sprintf (buf
, format
, sig
);
1931 char const *sig_desc
= safe_strsignal (sig
);
1932 emacs_write (STDERR_FILENO
, buf
, buflen
);
1933 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1939 reset_all_sys_modes ();
1942 stuff_buffered_input (stuff
);
1944 inhibit_sentinels
= 1;
1945 kill_buffer_processes (Qnil
);
1946 Fdo_auto_save (Qt
, Qnil
);
1948 #ifdef CLASH_DETECTION
1949 unlock_all_files ();
1952 /* There is a tendency for a SIGIO signal to arrive within exit,
1953 and cause a SIGHUP because the input descriptor is already closed. */
1957 /* Do this only if terminating normally, we want glyph matrices
1958 etc. in a core dump. */
1959 if (sig
== 0 || sig
== SIGTERM
)
1961 check_glyph_memory ();
1962 check_message_stack ();
1970 ns_term_shutdown (sig
);
1974 xml_cleanup_parser ();
1988 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1989 doc
: /* Dump current state of Emacs into executable file FILENAME.
1990 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1991 This is used in the file `loadup.el' when building Emacs.
1993 You must run Emacs in batch mode in order to dump it. */)
1994 (Lisp_Object filename
, Lisp_Object symfile
)
1998 ptrdiff_t count
= SPECPDL_INDEX ();
2002 if (! noninteractive
)
2003 error ("Dumping Emacs works only in batch mode");
2007 /* Warn if the gap between BSS end and heap start is larger than this. */
2008 # define MAX_HEAP_BSS_DIFF (1024*1024)
2010 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2012 fprintf (stderr
, "**************************************************\n");
2013 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2014 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2016 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2017 fprintf (stderr
, "fail because of this. See the section about\n");
2018 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2019 fprintf (stderr
, "**************************************************\n");
2021 #endif /* GNU_LINUX */
2023 /* Bind `command-line-processed' to nil before dumping,
2024 so that the dumped Emacs will process its command line
2025 and set up to work with X windows if appropriate. */
2026 symbol
= intern ("command-line-processed");
2027 specbind (symbol
, Qnil
);
2029 CHECK_STRING (filename
);
2030 filename
= Fexpand_file_name (filename
, Qnil
);
2031 if (!NILP (symfile
))
2033 CHECK_STRING (symfile
);
2034 if (SCHARS (symfile
))
2035 symfile
= Fexpand_file_name (symfile
, Qnil
);
2039 Vpurify_flag
= Qnil
;
2042 set_time_zone_rule (dump_tz
);
2043 #ifndef LOCALTIME_CACHE
2044 /* Force a tz reload, since set_time_zone_rule doesn't. */
2050 /* Tell malloc where start of impure now is. */
2051 /* Also arrange for warnings when nearly out of space. */
2052 #ifndef SYSTEM_MALLOC
2054 /* On Windows, this was done before dumping, and that once suffices.
2055 Meanwhile, my_edata is not valid on Windows. */
2057 extern char my_edata
[];
2058 memory_warnings (my_edata
, malloc_warning
);
2060 #endif /* not WINDOWSNT */
2061 #endif /* not SYSTEM_MALLOC */
2062 #ifdef DOUG_LEA_MALLOC
2063 malloc_state_ptr
= malloc_get_state ();
2066 #ifdef USE_MMAP_FOR_BUFFERS
2069 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2070 #ifdef USE_MMAP_FOR_BUFFERS
2073 #ifdef DOUG_LEA_MALLOC
2074 free (malloc_state_ptr
);
2078 Vlibrary_cache
= Qnil
;
2080 #ifdef HAVE_WINDOW_SYSTEM
2081 reset_image_types ();
2086 return unbind_to (count
, Qnil
);
2089 #endif /* not CANNOT_DUMP */
2092 /* Recover from setlocale (LC_ALL, ""). */
2096 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2097 so that numbers are read and printed properly for Emacs Lisp. */
2098 setlocale (LC_NUMERIC
, "C");
2101 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2104 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2106 if (! EQ (*plocale
, desired_locale
))
2108 *plocale
= desired_locale
;
2109 setlocale (category
, (STRINGP (desired_locale
)
2110 ? SSDATA (desired_locale
)
2115 /* Set system time locale to match Vsystem_time_locale, if possible. */
2117 synchronize_system_time_locale (void)
2119 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2120 Vsystem_time_locale
);
2123 /* Set system messages locale to match Vsystem_messages_locale, if
2126 synchronize_system_messages_locale (void)
2129 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2130 Vsystem_messages_locale
);
2133 #endif /* HAVE_SETLOCALE */
2137 decode_env_path (const char *evarname
, const char *defalt
)
2139 const char *path
, *p
;
2140 Lisp_Object lpath
, element
, tem
;
2143 const char *emacs_dir
= egetenv ("emacs_dir");
2144 static const char *emacs_dir_env
= "%emacs_dir%/";
2145 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2148 /* It's okay to use getenv here, because this function is only used
2149 to initialize variables when Emacs starts up, and isn't called
2152 path
= getenv (evarname
);
2163 /* Ensure values from the environment use the proper directory separator. */
2166 char *path_copy
= alloca (strlen (path
) + 1);
2167 strcpy (path_copy
, path
);
2168 dostounix_filename (path_copy
, 0);
2175 p
= strchr (path
, SEPCHAR
);
2177 p
= path
+ strlen (path
);
2178 element
= (p
- path
? make_string (path
, p
- path
)
2179 : build_string ("."));
2181 /* Relative file names in the default path are interpreted as
2182 being relative to $emacs_dir. */
2183 if (emacs_dir
&& defaulted
2184 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2185 element
= Fexpand_file_name (Fsubstring (element
,
2186 make_number (emacs_dir_len
),
2188 build_string (emacs_dir
));
2191 /* Add /: to the front of the name
2192 if it would otherwise be treated as magic. */
2193 tem
= Ffind_file_name_handler (element
, Qt
);
2195 /* However, if the handler says "I'm safe",
2196 don't bother adding /:. */
2200 prop
= Fget (tem
, intern ("safe-magic"));
2206 element
= concat2 (build_string ("/:"), element
);
2208 lpath
= Fcons (element
, lpath
);
2214 return Fnreverse (lpath
);
2217 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2218 doc
: /* Return non-nil if the current emacs process is a daemon.
2219 If the daemon was given a name argument, return that name. */)
2224 return build_string (daemon_name
);
2231 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2232 doc
: /* Mark the Emacs daemon as being initialized.
2233 This finishes the daemonization process by doing the other half of detaching
2234 from the parent process and its tty file descriptors. */)
2241 error ("This function can only be called if emacs is run as a daemon");
2243 if (daemon_pipe
[1] < 0)
2244 error ("The daemon has already been initialized");
2246 if (NILP (Vafter_init_time
))
2247 error ("This function can only be called after loading the init files");
2249 /* Get rid of stdin, stdout and stderr. */
2250 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2252 err
|= dup2 (nfd
, 0) < 0;
2253 err
|= dup2 (nfd
, 1) < 0;
2254 err
|= dup2 (nfd
, 2) < 0;
2255 err
|= emacs_close (nfd
) != 0;
2257 /* Closing the pipe will notify the parent that it can exit.
2258 FIXME: In case some other process inherited the pipe, closing it here
2259 won't notify the parent because it's still open elsewhere, so we
2260 additionally send a byte, just to make sure the parent really exits.
2261 Instead, we should probably close the pipe in start-process and
2262 call-process to make sure the pipe is never inherited by
2264 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2265 err
|= emacs_close (daemon_pipe
[1]) != 0;
2266 /* Set it to an invalid value so we know we've already run this function. */
2267 daemon_pipe
[1] = -1;
2270 error ("I/O error during daemon initialization");
2275 syms_of_emacs (void)
2277 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2278 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2279 DEFSYM (Qkill_emacs
, "kill-emacs");
2280 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2283 defsubr (&Sdump_emacs
);
2286 defsubr (&Skill_emacs
);
2288 defsubr (&Sinvocation_name
);
2289 defsubr (&Sinvocation_directory
);
2290 defsubr (&Sdaemonp
);
2291 defsubr (&Sdaemon_initialized
);
2293 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2294 doc
: /* Args passed by shell to Emacs, as a list of strings.
2295 Many arguments are deleted from the list as they are processed. */);
2297 DEFVAR_LISP ("system-type", Vsystem_type
,
2298 doc
: /* The value is a symbol indicating the type of operating system you are using.
2300 `gnu' compiled for a GNU Hurd system.
2301 `gnu/linux' compiled for a GNU/Linux system.
2302 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2303 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2304 `ms-dos' compiled as an MS-DOS application.
2305 `windows-nt' compiled as a native W32 application.
2306 `cygwin' compiled using the Cygwin library.
2307 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2308 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2309 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2310 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2312 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2313 doc
: /* Value is string indicating configuration Emacs was built for.
2314 On MS-Windows, the value reflects the OS flavor and version on which
2315 Emacs is running. */);
2316 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2318 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2319 doc
: /* String containing the configuration options Emacs was built with. */);
2320 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2322 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2323 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2325 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2326 doc
: /* Hook run when `kill-emacs' is called.
2327 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2328 in other similar situations), functions placed on this hook should not
2329 expect to be able to interact with the user. To ask for confirmation,
2330 see `kill-emacs-query-functions' instead.
2332 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2333 `noninteractive' was non-nil. */);
2334 Vkill_emacs_hook
= Qnil
;
2336 DEFVAR_LISP ("path-separator", Vpath_separator
,
2337 doc
: /* String containing the character that separates directories in
2338 search paths, such as PATH and other similar environment variables. */);
2341 Vpath_separator
= make_string (&c
, 1);
2344 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2345 doc
: /* The program name that was used to run Emacs.
2346 Any directory names are omitted. */);
2348 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2349 doc
: /* The directory in which the Emacs executable was found, to run it.
2350 The value is nil if that directory's name is not known. */);
2352 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2353 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2354 In an installed Emacs, this is normally nil. It is non-nil if
2355 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2356 within the variable `invocation-directory' or its parent. For example,
2357 this is the case when running an uninstalled Emacs executable from its
2358 build directory. */);
2359 Vinstallation_directory
= Qnil
;
2361 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2362 doc
: /* System locale for messages. */);
2363 Vsystem_messages_locale
= Qnil
;
2365 DEFVAR_LISP ("previous-system-messages-locale",
2366 Vprevious_system_messages_locale
,
2367 doc
: /* Most recently used system locale for messages. */);
2368 Vprevious_system_messages_locale
= Qnil
;
2370 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2371 doc
: /* System locale for time. */);
2372 Vsystem_time_locale
= Qnil
;
2374 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2375 doc
: /* Most recently used system locale for time. */);
2376 Vprevious_system_time_locale
= Qnil
;
2378 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2379 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2380 Vbefore_init_time
= Qnil
;
2382 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2383 doc
: /* Value of `current-time' after loading the init files.
2384 This is nil during initialization. */);
2385 Vafter_init_time
= Qnil
;
2387 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2388 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2389 inhibit_x_resources
= 0;
2391 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2392 doc
: /* Short copyright string for this version of Emacs. */);
2393 Vemacs_copyright
= build_string (emacs_copyright
);
2395 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2396 doc
: /* Version numbers of this version of Emacs. */);
2397 Vemacs_version
= build_string (emacs_version
);
2399 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2400 doc
: /* Alist of dynamic libraries vs external files implementing them.
2401 Each element is a list (LIBRARY FILE...), where the car is a symbol
2402 representing a supported external library, and the rest are strings giving
2403 alternate filenames for that library.
2405 Emacs tries to load the library from the files in the order they appear on
2406 the list; if none is loaded, the running session of Emacs won't have access
2409 Note that image types `pbm' and `xbm' do not need entries in this variable
2410 because they do not depend on external libraries and are always available.
2412 Also note that this is not a generic facility for accessing external
2413 libraries; only those already known by Emacs will be loaded. */);
2414 Vdynamic_library_alist
= Qnil
;
2415 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2418 Vlibrary_cache
= Qnil
;
2419 staticpro (&Vlibrary_cache
);
2422 /* Make sure IS_DAEMON starts up as false. */