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"
71 #include "blockinput.h"
72 #include "syssignal.h"
75 #include "termhooks.h"
83 #if (defined PROFILING \
84 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
85 # include <sys/gmon.h>
86 extern void moncontrol (int mode
);
95 #include <sys/resource.h>
98 #ifdef HAVE_PERSONALITY_LINUX32
99 #include <sys/personality.h>
102 static const char emacs_version
[] = VERSION
;
103 static const char emacs_copyright
[] = COPYRIGHT
;
105 /* Empty lisp strings. To avoid having to build any others. */
106 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
109 /* Cache for externally loaded libraries. */
110 Lisp_Object Vlibrary_cache
;
113 /* Set after Emacs has started up the first time.
114 Prevents reinitialization of the Lisp world and keymaps
115 on subsequent starts. */
119 extern void unexec_init_emacs_zone (void);
122 #ifdef DOUG_LEA_MALLOC
123 /* Preserves a pointer to the memory allocated that copies that
124 static data inside glibc's malloc. */
125 static void *malloc_state_ptr
;
126 /* From glibc, a routine that returns a copy of the malloc internal state. */
127 extern void *malloc_get_state (void);
128 /* From glibc, a routine that overwrites the malloc internal state. */
129 extern int malloc_set_state (void*);
130 /* True if the MALLOC_CHECK_ environment variable was set while
131 dumping. Used to work around a bug in glibc's malloc. */
132 static bool malloc_using_checking
;
133 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
134 extern void malloc_enable_thread (void);
137 Lisp_Object Qfile_name_handler_alist
;
139 Lisp_Object Qrisky_local_variable
;
141 Lisp_Object Qkill_emacs
;
142 static Lisp_Object Qkill_emacs_hook
;
144 /* If true, Emacs should not attempt to use a window-specific code,
145 but instead should use the virtual terminal under which it was started. */
146 bool inhibit_window_system
;
148 /* If true, a filter or a sentinel is running. Tested to save the match
149 data on the first attempt to change it inside asynchronous code. */
150 bool running_asynch_code
;
152 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
153 /* If true, -d was specified, meaning we're using some window system. */
157 /* An address near the bottom of the stack.
158 Tells GC how to save a copy of the stack. */
161 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
162 /* The address where the heap starts (from the first sbrk (0) call). */
163 static void *my_heap_start
;
167 /* The gap between BSS end and heap start as far as we can tell. */
168 static uprintmax_t heap_bss_diff
;
171 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
174 On Cocoa, CoreFoundation lib fails in forked process:
175 http://developer.apple.com/ReleaseNotes/
176 CoreFoundation/CoreFoundation.html)
178 On Windows, a Cygwin fork child cannot access the USER subsystem.
180 We mark being in the exec'd process by a daemon name argument of
181 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
182 NAME is the original daemon name, if any. */
183 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
184 # define DAEMON_MUST_EXEC
187 /* True means running Emacs without interactive terminal. */
190 /* True means remove site-lisp directories from load-path. */
193 /* Name for the server started by the daemon.*/
194 static char *daemon_name
;
196 /* Pipe used to send exit notification to the daemon parent at
200 /* Save argv and argc. */
204 static void sort_args (int argc
, char **argv
);
205 static void syms_of_emacs (void);
207 /* C89 needs each string be at most 509 characters, so the usage
208 strings below are split to not overflow this limit. */
209 static char const *const usage_message
[] =
212 Run Emacs, the extensible, customizable, self-documenting real-time\n\
213 display editor. The recommended way to start Emacs for normal editing\n\
214 is with no options at all.\n\
216 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
217 read the main documentation for these command-line arguments.\n\
219 Initialization options:\n\
223 --batch do not do interactive display; implies -q\n\
224 --chdir DIR change to directory DIR\n\
225 --daemon start a server in the background\n\
226 --debug-init enable Emacs Lisp debugger for init file\n\
227 --display, -d DISPLAY use X server DISPLAY\n\
230 --no-desktop do not load a saved desktop\n\
231 --no-init-file, -q load neither ~/.emacs nor default.el\n\
232 --no-shared-memory, -nl do not use shared memory\n\
233 --no-site-file do not load site-start.el\n\
234 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
235 --no-splash do not display a splash screen on startup\n\
236 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
239 --quick, -Q equivalent to:\n\
240 -q --no-site-file --no-site-lisp --no-splash\n\
241 --script FILE run FILE as an Emacs Lisp script\n\
242 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
243 --user, -u USER load ~USER/.emacs instead of your own\n\
249 FILE visit FILE using find-file\n\
250 +LINE go to line LINE in next FILE\n\
251 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
252 --directory, -L DIR add DIR to variable load-path\n\
253 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
254 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
257 --file FILE visit FILE using find-file\n\
258 --find-file FILE visit FILE using find-file\n\
259 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
260 --insert FILE insert contents of FILE into current buffer\n\
261 --kill exit without asking for confirmation\n\
262 --load, -l FILE load Emacs Lisp FILE using the load function\n\
263 --visit FILE visit FILE using find-file\n\
269 --background-color, -bg COLOR window background color\n\
270 --basic-display, -D disable many display features;\n\
271 used for debugging Emacs\n\
272 --border-color, -bd COLOR main border color\n\
273 --border-width, -bw WIDTH width of main border\n\
276 --color, --color=MODE override color mode for character terminals;\n\
277 MODE defaults to `auto', and\n\
278 can also be `never', `always',\n\
279 or a mode name like `ansi8'\n\
280 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
281 --font, -fn FONT default font; must be fixed-width\n\
282 --foreground-color, -fg COLOR window foreground color\n\
285 --fullheight, -fh make the first frame high as the screen\n\
286 --fullscreen, -fs make the first frame fullscreen\n\
287 --fullwidth, -fw make the first frame wide as the screen\n\
288 --maximized, -mm make the first frame maximized\n\
289 --geometry, -g GEOMETRY window geometry\n\
292 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
293 --iconic start Emacs in iconified state\n\
294 --internal-border, -ib WIDTH width between text and main border\n\
295 --line-spacing, -lsp PIXELS additional space to put between lines\n\
296 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
297 --name NAME title for initial Emacs frame\n\
300 --no-blinking-cursor, -nbc disable blinking cursor\n\
301 --reverse-video, -r, -rv switch foreground and background\n\
302 --title, -T TITLE title for initial Emacs frame\n\
303 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
304 --xrm XRESOURCES set additional X resources\n\
305 --parent-id XID set parent window\n\
306 --help display this help and exit\n\
307 --version output version information and exit\n\
311 You can generally also specify long option names with a single -; for\n\
312 example, -batch as well as --batch. You can use any unambiguous\n\
313 abbreviation for a --option.\n\
315 Various environment variables and window system resources also affect\n\
316 Emacs' operation. See the main documentation.\n\
318 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
319 section of the Emacs manual or the file BUGS.\n"
323 /* True if handling a fatal error already. */
324 bool fatal_error_in_progress
;
327 /* NS autrelease pool, for memory management. */
328 static void *ns_pool
;
333 setlocale (int cat
, char const *locale
)
340 /* Report a fatal error due to signal SIG, output a backtrace of at
341 most BACKTRACE_LIMIT lines, and exit. */
343 terminate_due_to_signal (int sig
, int backtrace_limit
)
345 signal (sig
, SIG_DFL
);
346 totally_unblock_input ();
348 /* If fatal error occurs in code below, avoid infinite recursion. */
349 if (! fatal_error_in_progress
)
351 fatal_error_in_progress
= 1;
353 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
354 Fkill_emacs (make_number (sig
));
356 shut_down_emacs (sig
, Qnil
);
357 emacs_backtrace (backtrace_limit
);
360 /* Signal the same code; this time it will really be fatal.
361 Since we're in a signal handler, the signal is blocked, so we
362 have to unblock it if we want to really receive it. */
366 sigemptyset (&unblocked
);
367 sigaddset (&unblocked
, sig
);
368 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
374 /* This shouldn't be executed, but it prevents a warning. */
378 /* Code for dealing with Lisp access to the Unix command line. */
381 init_cmdargs (int argc
, char **argv
, int skip_args
)
384 Lisp_Object name
, dir
, handler
;
385 ptrdiff_t count
= SPECPDL_INDEX ();
386 Lisp_Object raw_name
;
391 raw_name
= build_string (argv
[0]);
393 /* Add /: to the front of the name
394 if it would otherwise be treated as magic. */
395 handler
= Ffind_file_name_handler (raw_name
, Qt
);
396 if (! NILP (handler
))
397 raw_name
= concat2 (build_string ("/:"), raw_name
);
399 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
400 Vinvocation_directory
= Ffile_name_directory (raw_name
);
402 /* If we got no directory in argv[0], search PATH to find where
403 Emacs actually came from. */
404 if (NILP (Vinvocation_directory
))
407 int yes
= openp (Vexec_path
, Vinvocation_name
,
408 Vexec_suffixes
, &found
, make_number (X_OK
));
411 /* Add /: to the front of the name
412 if it would otherwise be treated as magic. */
413 handler
= Ffind_file_name_handler (found
, Qt
);
414 if (! NILP (handler
))
415 found
= concat2 (build_string ("/:"), found
);
416 Vinvocation_directory
= Ffile_name_directory (found
);
420 if (!NILP (Vinvocation_directory
)
421 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
422 /* Emacs was started with relative path, like ./emacs.
424 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
426 Vinstallation_directory
= Qnil
;
428 if (!NILP (Vinvocation_directory
))
430 dir
= Vinvocation_directory
;
432 /* If we are running from the build directory, set DIR to the
433 src subdirectory of the Emacs tree, like on Posix
435 if (SBYTES (dir
) > sizeof ("/i386/") - 1
436 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
438 dir
= Fexpand_file_name (build_string ("../.."), dir
);
439 #else /* !WINDOWSNT */
441 name
= Fexpand_file_name (Vinvocation_name
, dir
);
444 Lisp_Object tem
, lib_src_exists
;
445 Lisp_Object etc_exists
, info_exists
;
447 /* See if dir contains subdirs for use by Emacs.
448 Check for the ones that would exist in a build directory,
449 not including lisp and info. */
450 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
451 lib_src_exists
= Ffile_exists_p (tem
);
454 /* MSDOS installations frequently remove lib-src, but we still
455 must set installation-directory, or else info won't find
456 its files (it uses the value of installation-directory). */
457 tem
= Fexpand_file_name (build_string ("info"), dir
);
458 info_exists
= Ffile_exists_p (tem
);
463 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
465 tem
= Fexpand_file_name (build_string ("etc"), dir
);
466 etc_exists
= Ffile_exists_p (tem
);
467 if (!NILP (etc_exists
))
469 Vinstallation_directory
470 = Ffile_name_as_directory (dir
);
475 /* See if dir's parent contains those subdirs. */
476 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
477 lib_src_exists
= Ffile_exists_p (tem
);
481 /* See the MSDOS commentary above. */
482 tem
= Fexpand_file_name (build_string ("../info"), dir
);
483 info_exists
= Ffile_exists_p (tem
);
488 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
490 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
491 etc_exists
= Ffile_exists_p (tem
);
492 if (!NILP (etc_exists
))
494 tem
= Fexpand_file_name (build_string (".."), dir
);
495 Vinstallation_directory
496 = Ffile_name_as_directory (tem
);
501 /* If the Emacs executable is actually a link,
502 next try the dir that the link points into. */
503 tem
= Ffile_symlink_p (name
);
506 name
= Fexpand_file_name (tem
, dir
);
507 dir
= Ffile_name_directory (name
);
514 Vcommand_line_args
= Qnil
;
516 for (i
= argc
- 1; i
>= 0; i
--)
518 if (i
== 0 || i
> skip_args
)
519 /* For the moment, we keep arguments as is in unibyte strings.
520 They are decoded in the function command-line after we know
521 locale-coding-system. */
523 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
526 unbind_to (count
, Qnil
);
529 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
530 doc
: /* Return the program name that was used to run Emacs.
531 Any directory names are omitted. */)
534 return Fcopy_sequence (Vinvocation_name
);
537 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
539 doc
: /* Return the directory name in which the Emacs executable was located. */)
542 return Fcopy_sequence (Vinvocation_directory
);
547 /* A valid but unlikely value for the TZ environment value.
548 It is OK (though a bit slower) if the user actually chooses this value. */
549 static char const dump_tz
[] = "UtC0";
552 /* Test whether the next argument in ARGV matches SSTR or a prefix of
553 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
554 (the argument is supposed to have a value) store in *VALPTR either
555 the next argument or the portion of this one after the equal sign.
556 ARGV is read starting at position *SKIPPTR; this index is advanced
557 by the number of arguments used.
559 Too bad we can't just use getopt for all of this, but we don't have
560 enough information to do it right. */
563 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
564 int minlen
, char **valptr
, int *skipptr
)
570 /* Don't access argv[argc]; give up in advance. */
571 if (argc
<= *skipptr
+ 1)
574 arg
= argv
[*skipptr
+1];
577 if (strcmp (arg
, sstr
) == 0)
581 *valptr
= argv
[*skipptr
+2];
588 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
589 ? p
- arg
: strlen (arg
));
590 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
592 else if (valptr
== NULL
)
603 else if (argv
[*skipptr
+2] != NULL
)
605 *valptr
= argv
[*skipptr
+2];
615 #ifdef DOUG_LEA_MALLOC
617 /* malloc can be invoked even before main (e.g. by the dynamic
618 linker), so the dumped malloc state must be restored as early as
619 possible using this special hook. */
622 malloc_initialize_hook (void)
626 if (!malloc_using_checking
)
627 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
628 ignored if the heap to be restored was constructed without
629 malloc checking. Can't use unsetenv, since that calls malloc. */
633 for (p
= environ
; p
&& *p
; p
++)
634 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
643 malloc_set_state (malloc_state_ptr
);
644 #ifndef XMALLOC_OVERRUN_CHECK
645 free (malloc_state_ptr
);
650 if (my_heap_start
== 0)
651 my_heap_start
= sbrk (0);
652 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
656 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
658 #endif /* DOUG_LEA_MALLOC */
660 /* Close standard output and standard error, reporting any write
661 errors as best we can. This is intended for use with atexit. */
663 close_output_streams (void)
665 if (close_stream (stdout
) != 0)
667 emacs_perror ("Write error to standard output");
668 _exit (EXIT_FAILURE
);
671 if (close_stream (stderr
) != 0)
672 _exit (EXIT_FAILURE
);
677 main (int argc
, char **argv
)
682 char stack_bottom_variable
;
683 bool do_initial_setlocale
;
686 #ifdef HAVE_SETRLIMIT
692 #ifdef DAEMON_MUST_EXEC
701 #ifdef G_SLICE_ALWAYS_MALLOC
702 /* This is used by the Cygwin build. It's not needed starting with
703 cygwin-1.7.24, but it doesn't do any harm. */
704 xputenv ("G_SLICE=always-malloc");
710 extern char my_endbss
[];
711 extern char *my_endbss_static
;
713 if (my_heap_start
== 0)
714 my_heap_start
= sbrk (0);
716 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
720 #if defined WINDOWSNT || defined HAVE_NTGUI
721 /* Set global variables used to detect Windows version. Do this as
722 early as possible. (unexw32.c calls this function as well, but
723 the additional call here is harmless.) */
724 cache_system_info ();
727 #ifdef RUN_TIME_REMAP
729 run_time_remap (argv
[0]);
732 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
735 unexec_init_emacs_zone ();
738 atexit (close_output_streams
);
740 sort_args (argc
, argv
);
742 while (argv
[argc
]) argc
++;
744 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
746 const char *version
, *copyright
;
749 Lisp_Object tem
, tem2
;
750 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
751 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
754 fprintf (stderr
, "Invalid value of `emacs-version'\n");
759 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
764 version
= SSDATA (tem
);
765 copyright
= SSDATA (tem2
);
770 version
= emacs_version
;
771 copyright
= emacs_copyright
;
773 printf ("GNU Emacs %s\n", version
);
774 printf ("%s\n", copyright
);
775 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
776 printf ("You may redistribute copies of Emacs\n");
777 printf ("under the terms of the GNU General Public License.\n");
778 printf ("For more information about these matters, ");
779 printf ("see the file named COPYING.\n");
783 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
784 if (chdir (ch_to_dir
) == -1)
786 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
787 argv
[0], ch_to_dir
, strerror (errno
));
791 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
792 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
794 #ifdef HAVE_PERSONALITY_LINUX32
795 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
797 /* Set this so we only do this once. */
798 xputenv ("EMACS_HEAP_EXEC=true");
800 /* A flag to turn off address randomization which is introduced
801 in linux kernel shipped with fedora core 4 */
802 #define ADD_NO_RANDOMIZE 0x0040000
803 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
804 #undef ADD_NO_RANDOMIZE
806 execvp (argv
[0], argv
);
808 /* If the exec fails, try to dump anyway. */
809 emacs_perror (argv
[0]);
811 #endif /* HAVE_PERSONALITY_LINUX32 */
813 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
814 /* Extend the stack space available.
815 Don't do that if dumping, since some systems (e.g. DJGPP)
816 might define a smaller stack limit at that time. */
819 && (!noninteractive
|| initialized
)
821 && !getrlimit (RLIMIT_STACK
, &rlim
))
824 extern size_t re_max_failures
;
825 /* Approximate the amount regex.c needs per unit of re_max_failures. */
826 int ratio
= 20 * sizeof (char *);
827 /* Then add 33% to cover the size of the smaller stacks that regex.c
828 successively allocates and discards, on its way to the maximum. */
830 /* Add in some extra to cover
831 what we're likely to use for other reasons. */
832 newlim
= re_max_failures
* ratio
+ 200000;
834 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
835 stack allocation routine for new process that the allocation
836 fails if stack limit is not on page boundary. So, round up the
837 new limit to page boundary. */
838 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
840 if (newlim
> rlim
.rlim_max
)
842 newlim
= rlim
.rlim_max
;
843 /* Don't let regex.c overflow the stack we have. */
844 re_max_failures
= (newlim
- 200000) / ratio
;
846 if (rlim
.rlim_cur
< newlim
)
847 rlim
.rlim_cur
= newlim
;
849 setrlimit (RLIMIT_STACK
, &rlim
);
851 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
853 /* Record (approximately) where the stack begins. */
854 stack_bottom
= &stack_bottom_variable
;
858 #ifndef SYSTEM_MALLOC
859 /* Arrange to get warning messages as memory fills up. */
860 memory_warnings (0, malloc_warning
);
862 /* Call malloc at least once, to run malloc_initialize_hook.
863 Also call realloc and free for consistency. */
864 free (realloc (malloc (4), 4));
866 #endif /* not SYSTEM_MALLOC */
868 #if defined (MSDOS) || defined (WINDOWSNT)
869 /* We do all file input/output as binary files. When we need to translate
870 newlines, we do that manually. */
872 #endif /* MSDOS || WINDOWSNT */
875 if (!isatty (fileno (stdin
)))
876 setmode (fileno (stdin
), O_BINARY
);
877 if (!isatty (fileno (stdout
)))
880 setmode (fileno (stdout
), O_BINARY
);
884 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
885 The build procedure uses this while dumping, to ensure that the
886 dumped Emacs does not have its system locale tables initialized,
887 as that might cause screwups when the dumped Emacs starts up. */
889 char *lc_all
= getenv ("LC_ALL");
890 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
893 /* Set locale now, so that initial error messages are localized properly.
894 fixup_locale must wait until later, since it builds strings. */
895 if (do_initial_setlocale
)
896 setlocale (LC_ALL
, "");
898 inhibit_window_system
= 0;
900 /* Handle the -t switch, which specifies filename to use as terminal. */
904 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
909 result
= emacs_open (term
, O_RDWR
, 0);
910 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
912 char *errstring
= strerror (errno
);
913 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
918 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
921 fprintf (stderr
, "Using %s\n", term
);
922 #ifdef HAVE_WINDOW_SYSTEM
923 inhibit_window_system
= 1; /* -t => -nw */
930 /* Command line option --no-windows is deprecated and thus not mentioned
931 in the manual and usage information. */
932 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
933 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
934 inhibit_window_system
= 1;
936 /* Handle the -batch switch, which means don't do interactive display. */
938 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
941 Vundo_outer_limit
= Qnil
;
943 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
945 noninteractive
= 1; /* Set batch mode. */
946 /* Convert --script to -scriptload, un-skip it, and sort again
947 so that it will be handled in proper sequence. */
948 /* FIXME broken for --script=FILE - is that supposed to work? */
949 argv
[skip_args
- 1] = (char *) "-scriptload";
951 sort_args (argc
, argv
);
954 /* Handle the --help option, which gives a usage message. */
955 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
958 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
959 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
960 fputs (usage_message
[i
], stdout
);
964 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
965 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
970 /* Start as a daemon: fork a new child process which will run the
971 rest of the initialization code, then exit.
973 Detaching a daemon requires the following steps:
977 - close the tty file-descriptors
979 We only want to do the last 2 steps once the daemon is ready to
980 serve requests, i.e. after loading .emacs (initialization).
981 OTOH initialization may start subprocesses (e.g. ispell) and these
982 should be run from the proper process (the one that will end up
983 running as daemon) and with the proper "session id" in order for
984 them to keep working after detaching, so fork and setsid need to be
985 performed before initialization.
987 We want to avoid exiting before the server socket is ready, so
988 use a pipe for synchronization. The parent waits for the child
989 to close its end of the pipe (using `daemon-initialized')
991 if (emacs_pipe (daemon_pipe
) != 0)
993 fprintf (stderr
, "Cannot pipe!\n");
997 #ifndef DAEMON_MUST_EXEC
999 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1000 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1001 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1002 #endif /* USE_GTK */
1004 #else /* DAEMON_MUST_EXEC */
1005 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1006 f
= fork (); /* in orig */
1008 f
= 0; /* in exec'd */
1009 #endif /* !DAEMON_MUST_EXEC */
1015 /* Close unused writing end of the pipe. */
1016 emacs_close (daemon_pipe
[1]);
1018 /* Just wait for the child to close its end of the pipe. */
1021 retval
= read (daemon_pipe
[0], &buf
, 1);
1023 while (retval
== -1 && errno
== EINTR
);
1027 fprintf (stderr
, "Error reading status from child\n");
1030 else if (retval
== 0)
1032 fprintf (stderr
, "Error: server did not start correctly\n");
1036 emacs_close (daemon_pipe
[0]);
1041 emacs_perror ("fork");
1042 exit (EXIT_CANCELED
);
1045 #ifdef DAEMON_MUST_EXEC
1047 /* In orig process, forked as child, OR in exec'd. */
1048 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1049 { /* In orig, child: now exec w/special daemon name. */
1052 snprintf (fdStr
, sizeof fdStr
,
1053 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1054 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1056 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1058 fprintf (stderr
, "daemon: child name too long\n");
1059 exit (EXIT_CANNOT_INVOKE
);
1062 argv
[skip_args
] = fdStr
;
1064 execvp (argv
[0], argv
);
1065 emacs_perror (argv
[0]);
1066 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1069 /* In exec'd: parse special dname into pipe and name info. */
1070 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1071 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1073 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1074 exit (EXIT_CANNOT_INVOKE
);
1076 dname_arg2
[0] = '\0';
1077 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1079 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1081 #endif /* DAEMON_MUST_EXEC */
1084 daemon_name
= xstrdup (dname_arg
);
1085 /* Close unused reading end of the pipe. */
1086 emacs_close (daemon_pipe
[0]);
1090 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1095 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1096 # ifndef CANNOT_DUMP
1097 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1098 that causes an infinite recursive loop with FreeBSD. But do make
1099 it thread-safe when creating emacs, otherwise bootstrap-emacs
1100 fails on Cygwin. See Bug#14569. */
1101 if (!noninteractive
|| initialized
)
1103 malloc_enable_thread ();
1106 init_signals (dumping
);
1108 noninteractive1
= noninteractive
;
1110 /* Perform basic initializations (not merely interning symbols). */
1117 init_charset_once ();
1118 init_coding_once ();
1119 init_syntax_once (); /* Create standard syntax table. */
1120 init_category_once (); /* Create standard category table. */
1121 init_casetab_once (); /* Must be done before init_buffer_once. */
1122 init_buffer_once (); /* Create buffer table and some buffers. */
1123 init_minibuf_once (); /* Create list of minibuffers. */
1124 /* Must precede init_window_once. */
1126 /* Call syms_of_xfaces before init_window_once because that
1127 function creates Vterminal_frame. Termcap frames now use
1128 faces, and the face implementation uses some symbols as
1131 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1132 be better to arrange things not to have this dependency. */
1134 /* Call syms_of_keyboard before init_window_once because
1135 keyboard sets up symbols that include some face names that
1136 the X support will want to use. This can happen when
1137 CANNOT_DUMP is defined. */
1138 syms_of_keyboard ();
1140 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1142 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1144 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1146 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1148 /* Before syms_of_coding because it initializes Qcharsetp. */
1150 /* Before init_window_once, because it sets up the
1151 Vcoding_system_hash_table. */
1152 syms_of_coding (); /* This should be after syms_of_fileio. */
1154 init_window_once (); /* Init the window system. */
1155 #ifdef HAVE_WINDOW_SYSTEM
1156 init_fringe_once (); /* Swap bitmaps if necessary. */
1157 #endif /* HAVE_WINDOW_SYSTEM */
1162 if (do_initial_setlocale
)
1165 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1166 Vsystem_time_locale
= Vprevious_system_time_locale
;
1171 running_asynch_code
= 0;
1175 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1178 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1181 ns_pool
= ns_alloc_autorelease_pool ();
1182 if (!noninteractive
)
1184 #ifdef NS_IMPL_COCOA
1185 if (skip_args
< argc
)
1187 /* FIXME: Do the right thing if getenv returns NULL, or if
1189 if (!strncmp (argv
[skip_args
], "-psn", 4))
1192 chdir (getenv ("HOME"));
1194 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1197 chdir (getenv ("HOME"));
1202 #endif /* HAVE_NS */
1204 #ifdef HAVE_X_WINDOWS
1205 /* Stupid kludge to catch command-line display spec. We can't
1206 handle this argument entirely in window system dependent code
1207 because we don't even know which window system dependent code
1208 to run until we've recognized this argument. */
1210 char *displayname
= 0;
1211 int count_before
= skip_args
;
1213 /* Skip any number of -d options, but only use the last one. */
1216 int count_before_this
= skip_args
;
1218 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1220 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1225 count_before
= count_before_this
;
1228 /* If we have the form --display=NAME,
1229 convert it into -d name.
1230 This requires inserting a new element into argv. */
1231 if (displayname
&& count_before
< skip_args
)
1233 if (skip_args
== count_before
+ 1)
1235 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1236 (argc
- (count_before
+ 2)) * sizeof *argv
);
1237 argv
[count_before
+ 2] = displayname
;
1240 argv
[count_before
+ 1] = (char *) "-d";
1245 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1246 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1250 /* Don't actually discard this arg. */
1251 skip_args
= count_before
;
1253 #else /* !HAVE_X_WINDOWS */
1256 int count_before
= skip_args
;
1258 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1259 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1262 skip_args
= count_before
;
1266 /* argmatch must not be used after here,
1267 except when building temacs
1268 because the -d argument has not been skipped in skip_args. */
1271 /* Call early 'cause init_environment needs it. */
1273 /* Set defaults for several environment variables. */
1275 init_environment (argc
, argv
, skip_args
);
1280 #ifdef HAVE_GFILENOTIFY
1281 globals_of_gfilenotify ();
1286 #ifdef HAVE_W32NOTIFY
1287 globals_of_w32notify ();
1289 /* Initialize environment from registry settings. */
1290 init_environment (argv
);
1291 init_ntproc (dumping
); /* must precede init_editfns. */
1294 /* Initialize and GC-protect Vinitial_environment and
1295 Vprocess_environment before set_initial_environment fills them
1298 syms_of_callproc ();
1299 /* egetenv is a pretty low-level facility, which may get called in
1300 many circumstances; it seems flimsy to put off initializing it
1301 until calling init_callproc. Do not do it when dumping. */
1303 set_initial_environment ();
1305 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1306 if this is not done. Do it after set_global_environment so that we
1307 don't pollute Vglobal_environment. */
1308 /* Setting LANG here will defeat the startup locale processing... */
1313 init_buffer (); /* Init default directory of main buffer. */
1315 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1316 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1320 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1321 Lisp_Object old_log_max
;
1322 old_log_max
= Vmessage_log_max
;
1323 XSETFASTINT (Vmessage_log_max
, 0);
1324 message_dolog ("", 0, 1, 0);
1325 Vmessage_log_max
= old_log_max
;
1328 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1332 /* Check to see if Emacs has been installed correctly. */
1333 check_windows_init_file ();
1336 /* Intern the names of all standard functions and variables;
1337 define standard keys. */
1341 /* The basic levels of Lisp must come first. Note that
1342 syms_of_data and some others have already been called. */
1347 syms_of_floatfns ();
1350 syms_of_bytecode ();
1352 syms_of_casefiddle ();
1354 syms_of_category ();
1356 syms_of_character ();
1363 syms_of_filelock ();
1366 /* syms_of_keymap (); */
1374 syms_of_terminal ();
1380 syms_of_textprop ();
1381 syms_of_composite ();
1384 #endif /* WINDOWSNT */
1391 #ifdef HAVE_WINDOW_SYSTEM
1394 #endif /* HAVE_WINDOW_SYSTEM */
1395 #ifdef HAVE_X_WINDOWS
1400 #ifdef HAVE_XWIDGETS
1403 syms_of_xsettings ();
1410 #endif /* HAVE_X_WINDOWS */
1417 syms_of_decompress ();
1427 #endif /* HAVE_NTGUI */
1429 #if defined WINDOWSNT || defined HAVE_NTGUI
1430 syms_of_w32select ();
1437 syms_of_win16select ();
1444 syms_of_nsselect ();
1446 #endif /* HAVE_NS */
1452 #ifdef HAVE_GFILENOTIFY
1453 syms_of_gfilenotify ();
1454 #endif /* HAVE_GFILENOTIFY */
1458 #endif /* HAVE_INOTIFY */
1461 syms_of_dbusbind ();
1462 #endif /* HAVE_DBUS */
1466 #ifdef HAVE_W32NOTIFY
1467 syms_of_w32notify ();
1468 #endif /* HAVE_W32NOTIFY */
1469 #endif /* WINDOWSNT */
1471 syms_of_profiler ();
1473 keys_of_casefiddle ();
1476 keys_of_keyboard ();
1482 /* Initialization that must be done even if the global variable
1483 initialized is non zero. */
1485 globals_of_w32font ();
1486 globals_of_w32fns ();
1487 globals_of_w32menu ();
1488 #endif /* HAVE_NTGUI */
1490 #if defined WINDOWSNT || defined HAVE_NTGUI
1491 globals_of_w32select ();
1497 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1498 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1499 init_keyboard (); /* This too must precede init_sys_modes. */
1500 if (!noninteractive
)
1501 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1503 #ifdef HAVE_WINDOW_SYSTEM
1505 #endif /* HAVE_WINDOW_SYSTEM */
1513 /* Handle -l loadup, args passed by Makefile. */
1514 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1515 Vtop_level
= list2 (intern_c_string ("load"), build_string (file
));
1516 /* Unless next switch is -nl, load "loadup.el" first thing. */
1518 Vtop_level
= list2 (intern_c_string ("load"),
1519 build_string ("loadup.el"));
1526 /* If the execution TZ happens to be the same as the dump TZ,
1527 change it to some other value and then change it back,
1528 to force the underlying implementation to reload the TZ info.
1529 This is needed on implementations that load TZ info from files,
1530 since the TZ file contents may differ between dump and execution. */
1531 char *tz
= getenv ("TZ");
1532 if (tz
&& !strcmp (tz
, dump_tz
))
1542 /* Set up for profiling. This is known to work on FreeBSD,
1543 GNU/Linux and MinGW. It might work on some other systems too.
1544 Give it a try and tell us if it works on your system. To compile
1545 for profiling, use the configure option --enable-profiling. */
1546 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1551 extern unsigned char etext
asm ("etext");
1557 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1566 #ifdef LOCALTIME_CACHE
1567 /* Some versions of localtime have a bug. They cache the value of the time
1568 zone rather than looking it up every time. Since localtime() is
1569 called to bolt the undumping time into the undumped emacs, this
1570 results in localtime ignoring the TZ environment variable.
1571 This flushes the new TZ value into localtime. */
1573 #endif /* defined (LOCALTIME_CACHE) */
1575 /* Enter editor command loop. This never returns. */
1581 /* Sort the args so we can find the most important ones
1582 at the beginning of argv. */
1584 /* First, here's a table of all the standard options. */
1586 struct standard_args
1589 const char *longname
;
1594 static const struct standard_args standard_args
[] =
1596 { "-version", "--version", 150, 0 },
1597 { "-chdir", "--chdir", 130, 1 },
1598 { "-t", "--terminal", 120, 1 },
1599 { "-nw", "--no-window-system", 110, 0 },
1600 { "-nw", "--no-windows", 110, 0 },
1601 { "-batch", "--batch", 100, 0 },
1602 { "-script", "--script", 100, 1 },
1603 { "-daemon", "--daemon", 99, 0 },
1604 { "-help", "--help", 90, 0 },
1605 { "-nl", "--no-loadup", 70, 0 },
1606 { "-nsl", "--no-site-lisp", 65, 0 },
1607 /* -d must come last before the options handled in startup.el. */
1608 { "-d", "--display", 60, 1 },
1609 { "-display", 0, 60, 1 },
1610 /* Now for the options handled in `command-line' (startup.el). */
1611 /* (Note that to imply -nsl, -Q is partially handled here.) */
1612 { "-Q", "--quick", 55, 0 },
1613 { "-quick", 0, 55, 0 },
1614 { "-q", "--no-init-file", 50, 0 },
1615 { "-no-init-file", 0, 50, 0 },
1616 { "-no-site-file", "--no-site-file", 40, 0 },
1617 { "-u", "--user", 30, 1 },
1618 { "-user", 0, 30, 1 },
1619 { "-debug-init", "--debug-init", 20, 0 },
1620 { "-iconic", "--iconic", 15, 0 },
1621 { "-D", "--basic-display", 12, 0},
1622 { "-basic-display", 0, 12, 0},
1623 { "-nbc", "--no-blinking-cursor", 12, 0 },
1624 /* Now for the options handled in `command-line-1' (startup.el). */
1625 { "-nbi", "--no-bitmap-icon", 10, 0 },
1626 { "-bg", "--background-color", 10, 1 },
1627 { "-background", 0, 10, 1 },
1628 { "-fg", "--foreground-color", 10, 1 },
1629 { "-foreground", 0, 10, 1 },
1630 { "-bd", "--border-color", 10, 1 },
1631 { "-bw", "--border-width", 10, 1 },
1632 { "-ib", "--internal-border", 10, 1 },
1633 { "-ms", "--mouse-color", 10, 1 },
1634 { "-cr", "--cursor-color", 10, 1 },
1635 { "-fn", "--font", 10, 1 },
1636 { "-font", 0, 10, 1 },
1637 { "-fs", "--fullscreen", 10, 0 },
1638 { "-fw", "--fullwidth", 10, 0 },
1639 { "-fh", "--fullheight", 10, 0 },
1640 { "-mm", "--maximized", 10, 0 },
1641 { "-g", "--geometry", 10, 1 },
1642 { "-geometry", 0, 10, 1 },
1643 { "-T", "--title", 10, 1 },
1644 { "-title", 0, 10, 1 },
1645 { "-name", "--name", 10, 1 },
1646 { "-xrm", "--xrm", 10, 1 },
1647 { "-parent-id", "--parent-id", 10, 1 },
1648 { "-r", "--reverse-video", 5, 0 },
1650 { "-reverse", 0, 5, 0 },
1651 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1652 { "-vb", "--vertical-scroll-bars", 5, 0 },
1653 { "-color", "--color", 5, 0},
1654 { "-no-splash", "--no-splash", 3, 0 },
1655 { "-no-desktop", "--no-desktop", 3, 0 },
1657 { "-NSAutoLaunch", 0, 5, 1 },
1658 { "-NXAutoLaunch", 0, 5, 1 },
1659 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1660 { "-_NSMachLaunch", 0, 85, 1 },
1661 { "-MachLaunch", 0, 85, 1 },
1662 { "-macosx", 0, 85, 0 },
1663 { "-NSHost", 0, 85, 1 },
1665 /* These have the same priority as ordinary file name args,
1666 so they are not reordered with respect to those. */
1667 { "-L", "--directory", 0, 1 },
1668 { "-directory", 0, 0, 1 },
1669 { "-l", "--load", 0, 1 },
1670 { "-load", 0, 0, 1 },
1671 /* This has no longname, because using --scriptload confuses sort_args,
1672 because then the --script long option seems to match twice; ie
1673 you can't have a long option which is a prefix of another long
1674 option. In any case, this is entirely an internal option. */
1675 { "-scriptload", NULL
, 0, 1 },
1676 { "-f", "--funcall", 0, 1 },
1677 { "-funcall", 0, 0, 1 },
1678 { "-eval", "--eval", 0, 1 },
1679 { "-execute", "--execute", 0, 1 },
1680 { "-find-file", "--find-file", 0, 1 },
1681 { "-visit", "--visit", 0, 1 },
1682 { "-file", "--file", 0, 1 },
1683 { "-insert", "--insert", 0, 1 },
1685 { "-NXOpen", 0, 0, 1 },
1686 { "-NXOpenTemp", 0, 0, 1 },
1687 { "-NSOpen", 0, 0, 1 },
1688 { "-NSOpenTemp", 0, 0, 1 },
1689 { "-GSFilePath", 0, 0, 1 },
1691 /* This should be processed after ordinary file name args and the like. */
1692 { "-kill", "--kill", -10, 0 },
1695 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1696 so that the highest priority ones come first.
1697 Do not change the order of elements of equal priority.
1698 If an option takes an argument, keep it and its argument together.
1700 If an option that takes no argument appears more
1701 than once, eliminate all but one copy of it. */
1704 sort_args (int argc
, char **argv
)
1706 char **new = xmalloc (argc
* sizeof *new);
1707 /* For each element of argv,
1708 the corresponding element of options is:
1709 0 for an option that takes no arguments,
1710 1 for an option that takes one argument, etc.
1711 -1 for an ordinary non-option argument. */
1712 int *options
= xnmalloc (argc
, sizeof *options
);
1713 int *priority
= xnmalloc (argc
, sizeof *priority
);
1715 int incoming_used
= 1;
1719 /* Categorize all the options,
1720 and figure out which argv elts are option arguments. */
1721 for (from
= 1; from
< argc
; from
++)
1725 if (argv
[from
][0] == '-')
1729 /* If we have found "--", don't consider
1730 any more arguments as options. */
1731 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1733 /* Leave the "--", and everything following it, at the end. */
1734 for (; from
< argc
; from
++)
1736 priority
[from
] = -100;
1742 /* Look for a match with a known old-fashioned option. */
1743 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1744 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1746 options
[from
] = standard_args
[i
].nargs
;
1747 priority
[from
] = standard_args
[i
].priority
;
1748 if (from
+ standard_args
[i
].nargs
>= argc
)
1749 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1750 from
+= standard_args
[i
].nargs
;
1754 /* Look for a match with a known long option.
1755 MATCH is -1 if no match so far, -2 if two or more matches so far,
1756 >= 0 (the table index of the match) if just one match so far. */
1757 if (argv
[from
][1] == '-')
1759 char const *equals
= strchr (argv
[from
], '=');
1761 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1766 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1767 if (standard_args
[i
].longname
1768 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1777 /* If we found exactly one match, use that. */
1780 options
[from
] = standard_args
[match
].nargs
;
1781 priority
[from
] = standard_args
[match
].priority
;
1782 /* If --OPTION=VALUE syntax is used,
1783 this option uses just one argv element. */
1786 if (from
+ options
[from
] >= argc
)
1787 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1788 from
+= options
[from
];
1790 /* FIXME When match < 0, shouldn't there be some error,
1791 or at least indication to the user that there was a
1798 /* Copy the arguments, in order of decreasing priority, to NEW. */
1800 while (incoming_used
< argc
)
1803 int best_priority
= -9999;
1805 /* Find the highest priority remaining option.
1806 If several have equal priority, take the first of them. */
1807 for (from
= 1; from
< argc
; from
++)
1809 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1811 best_priority
= priority
[from
];
1814 /* Skip option arguments--they are tied to the options. */
1815 if (options
[from
] > 0)
1816 from
+= options
[from
];
1822 /* Copy the highest priority remaining option, with its args, to NEW.
1823 Unless it is a duplicate of the previous one. */
1824 if (! (options
[best
] == 0
1825 && ! strcmp (new[to
- 1], argv
[best
])))
1827 new[to
++] = argv
[best
];
1828 for (i
= 0; i
< options
[best
]; i
++)
1829 new[to
++] = argv
[best
+ i
+ 1];
1832 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1834 /* Clear out this option in ARGV. */
1836 for (i
= 0; i
< options
[best
]; i
++)
1837 argv
[best
+ i
+ 1] = 0;
1840 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1844 memcpy (argv
, new, sizeof (char *) * argc
);
1851 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1852 doc
: /* Exit the Emacs job and kill it.
1853 If ARG is an integer, return ARG as the exit program code.
1854 If ARG is a string, stuff it as keyboard input.
1856 This function is called upon receipt of the signals SIGTERM
1857 or SIGHUP, and upon SIGINT in batch mode.
1859 The value of `kill-emacs-hook', if not void,
1860 is a list of functions (of no args),
1861 all of which are called before Emacs is actually killed. */)
1864 struct gcpro gcpro1
;
1872 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1874 waiting_for_input
= 0;
1875 Frun_hooks (1, &Qkill_emacs_hook
);
1878 #ifdef HAVE_X_WINDOWS
1879 /* Transfer any clipboards we own to the clipboard manager. */
1880 x_clipboard_manager_save_all ();
1883 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1886 ns_release_autorelease_pool (ns_pool
);
1889 /* If we have an auto-save list file,
1890 kill it because we are exiting Emacs deliberately (not crashing).
1891 Do it after shut_down_emacs, which does an auto-save. */
1892 if (STRINGP (Vauto_save_list_file_name
))
1894 Lisp_Object listfile
;
1895 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1896 unlink (SSDATA (listfile
));
1900 exit_code
= (XINT (arg
) < 0
1901 ? XINT (arg
) | INT_MIN
1902 : XINT (arg
) & INT_MAX
);
1904 exit_code
= EXIT_SUCCESS
;
1909 /* Perform an orderly shutdown of Emacs. Autosave any modified
1910 buffers, kill any child processes, clean up the terminal modes (if
1911 we're in the foreground), and other stuff like that. Don't perform
1912 any redisplay; this may be called when Emacs is shutting down in
1913 the background, or after its X connection has died.
1915 If SIG is a signal number, print a message for it.
1917 This is called by fatal signal handlers, X protocol error handlers,
1921 shut_down_emacs (int sig
, Lisp_Object stuff
)
1923 /* Prevent running of hooks from now on. */
1926 /* Don't update display from now on. */
1927 Vinhibit_redisplay
= Qt
;
1929 /* If we are controlling the terminal, reset terminal modes. */
1932 pid_t pgrp
= getpgrp ();
1933 pid_t tpgrp
= tcgetpgrp (0);
1934 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1936 reset_all_sys_modes ();
1937 if (sig
&& sig
!= SIGTERM
)
1939 static char const format
[] = "Fatal error %d: ";
1940 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1941 int buflen
= sprintf (buf
, format
, sig
);
1942 char const *sig_desc
= safe_strsignal (sig
);
1943 emacs_write (STDERR_FILENO
, buf
, buflen
);
1944 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1950 reset_all_sys_modes ();
1953 stuff_buffered_input (stuff
);
1955 inhibit_sentinels
= 1;
1956 kill_buffer_processes (Qnil
);
1957 Fdo_auto_save (Qt
, Qnil
);
1959 #ifdef CLASH_DETECTION
1960 unlock_all_files ();
1963 /* There is a tendency for a SIGIO signal to arrive within exit,
1964 and cause a SIGHUP because the input descriptor is already closed. */
1968 /* Do this only if terminating normally, we want glyph matrices
1969 etc. in a core dump. */
1970 if (sig
== 0 || sig
== SIGTERM
)
1972 check_glyph_memory ();
1973 check_message_stack ();
1981 ns_term_shutdown (sig
);
1985 xml_cleanup_parser ();
1999 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2000 doc
: /* Dump current state of Emacs into executable file FILENAME.
2001 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2002 This is used in the file `loadup.el' when building Emacs.
2004 You must run Emacs in batch mode in order to dump it. */)
2005 (Lisp_Object filename
, Lisp_Object symfile
)
2009 ptrdiff_t count
= SPECPDL_INDEX ();
2013 if (! noninteractive
)
2014 error ("Dumping Emacs works only in batch mode");
2018 /* Warn if the gap between BSS end and heap start is larger than this. */
2019 # define MAX_HEAP_BSS_DIFF (1024*1024)
2021 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2023 fprintf (stderr
, "**************************************************\n");
2024 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2025 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2027 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2028 fprintf (stderr
, "fail because of this. See the section about\n");
2029 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2030 fprintf (stderr
, "**************************************************\n");
2032 #endif /* GNU_LINUX */
2034 /* Bind `command-line-processed' to nil before dumping,
2035 so that the dumped Emacs will process its command line
2036 and set up to work with X windows if appropriate. */
2037 symbol
= intern ("command-line-processed");
2038 specbind (symbol
, Qnil
);
2040 CHECK_STRING (filename
);
2041 filename
= Fexpand_file_name (filename
, Qnil
);
2042 if (!NILP (symfile
))
2044 CHECK_STRING (symfile
);
2045 if (SCHARS (symfile
))
2046 symfile
= Fexpand_file_name (symfile
, Qnil
);
2050 Vpurify_flag
= Qnil
;
2053 set_time_zone_rule (dump_tz
);
2054 #ifndef LOCALTIME_CACHE
2055 /* Force a tz reload, since set_time_zone_rule doesn't. */
2061 /* Tell malloc where start of impure now is. */
2062 /* Also arrange for warnings when nearly out of space. */
2063 #ifndef SYSTEM_MALLOC
2065 /* On Windows, this was done before dumping, and that once suffices.
2066 Meanwhile, my_edata is not valid on Windows. */
2068 extern char my_edata
[];
2069 memory_warnings (my_edata
, malloc_warning
);
2071 #endif /* not WINDOWSNT */
2072 #endif /* not SYSTEM_MALLOC */
2073 #ifdef DOUG_LEA_MALLOC
2074 malloc_state_ptr
= malloc_get_state ();
2077 #ifdef USE_MMAP_FOR_BUFFERS
2080 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2081 #ifdef USE_MMAP_FOR_BUFFERS
2084 #ifdef DOUG_LEA_MALLOC
2085 free (malloc_state_ptr
);
2089 Vlibrary_cache
= Qnil
;
2091 #ifdef HAVE_WINDOW_SYSTEM
2092 reset_image_types ();
2097 return unbind_to (count
, Qnil
);
2100 #endif /* not CANNOT_DUMP */
2103 /* Recover from setlocale (LC_ALL, ""). */
2107 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2108 so that numbers are read and printed properly for Emacs Lisp. */
2109 setlocale (LC_NUMERIC
, "C");
2112 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2115 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2117 if (! EQ (*plocale
, desired_locale
))
2119 *plocale
= desired_locale
;
2120 setlocale (category
, (STRINGP (desired_locale
)
2121 ? SSDATA (desired_locale
)
2126 /* Set system time locale to match Vsystem_time_locale, if possible. */
2128 synchronize_system_time_locale (void)
2130 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2131 Vsystem_time_locale
);
2134 /* Set system messages locale to match Vsystem_messages_locale, if
2137 synchronize_system_messages_locale (void)
2140 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2141 Vsystem_messages_locale
);
2144 #endif /* HAVE_SETLOCALE */
2148 decode_env_path (const char *evarname
, const char *defalt
)
2150 const char *path
, *p
;
2151 Lisp_Object lpath
, element
, tem
;
2154 const char *emacs_dir
= egetenv ("emacs_dir");
2155 static const char *emacs_dir_env
= "%emacs_dir%/";
2156 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2159 /* It's okay to use getenv here, because this function is only used
2160 to initialize variables when Emacs starts up, and isn't called
2163 path
= getenv (evarname
);
2174 /* Ensure values from the environment use the proper directory separator. */
2177 char *path_copy
= alloca (strlen (path
) + 1);
2178 strcpy (path_copy
, path
);
2179 dostounix_filename (path_copy
, 0);
2186 p
= strchr (path
, SEPCHAR
);
2188 p
= path
+ strlen (path
);
2189 element
= (p
- path
? make_string (path
, p
- path
)
2190 : build_string ("."));
2192 /* Relative file names in the default path are interpreted as
2193 being relative to $emacs_dir. */
2194 if (emacs_dir
&& defaulted
2195 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2196 element
= Fexpand_file_name (Fsubstring (element
,
2197 make_number (emacs_dir_len
),
2199 build_string (emacs_dir
));
2202 /* Add /: to the front of the name
2203 if it would otherwise be treated as magic. */
2204 tem
= Ffind_file_name_handler (element
, Qt
);
2206 /* However, if the handler says "I'm safe",
2207 don't bother adding /:. */
2211 prop
= Fget (tem
, intern ("safe-magic"));
2217 element
= concat2 (build_string ("/:"), element
);
2219 lpath
= Fcons (element
, lpath
);
2225 return Fnreverse (lpath
);
2228 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2229 doc
: /* Return non-nil if the current emacs process is a daemon.
2230 If the daemon was given a name argument, return that name. */)
2235 return build_string (daemon_name
);
2242 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2243 doc
: /* Mark the Emacs daemon as being initialized.
2244 This finishes the daemonization process by doing the other half of detaching
2245 from the parent process and its tty file descriptors. */)
2252 error ("This function can only be called if emacs is run as a daemon");
2254 if (daemon_pipe
[1] < 0)
2255 error ("The daemon has already been initialized");
2257 if (NILP (Vafter_init_time
))
2258 error ("This function can only be called after loading the init files");
2260 /* Get rid of stdin, stdout and stderr. */
2261 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2263 err
|= dup2 (nfd
, 0) < 0;
2264 err
|= dup2 (nfd
, 1) < 0;
2265 err
|= dup2 (nfd
, 2) < 0;
2266 err
|= emacs_close (nfd
) != 0;
2268 /* Closing the pipe will notify the parent that it can exit.
2269 FIXME: In case some other process inherited the pipe, closing it here
2270 won't notify the parent because it's still open elsewhere, so we
2271 additionally send a byte, just to make sure the parent really exits.
2272 Instead, we should probably close the pipe in start-process and
2273 call-process to make sure the pipe is never inherited by
2275 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2276 err
|= emacs_close (daemon_pipe
[1]) != 0;
2277 /* Set it to an invalid value so we know we've already run this function. */
2278 daemon_pipe
[1] = -1;
2281 error ("I/O error during daemon initialization");
2286 syms_of_emacs (void)
2288 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2289 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2290 DEFSYM (Qkill_emacs
, "kill-emacs");
2291 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2294 defsubr (&Sdump_emacs
);
2297 defsubr (&Skill_emacs
);
2299 defsubr (&Sinvocation_name
);
2300 defsubr (&Sinvocation_directory
);
2301 defsubr (&Sdaemonp
);
2302 defsubr (&Sdaemon_initialized
);
2304 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2305 doc
: /* Args passed by shell to Emacs, as a list of strings.
2306 Many arguments are deleted from the list as they are processed. */);
2308 DEFVAR_LISP ("system-type", Vsystem_type
,
2309 doc
: /* The value is a symbol indicating the type of operating system you are using.
2311 `gnu' compiled for a GNU Hurd system.
2312 `gnu/linux' compiled for a GNU/Linux system.
2313 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2314 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2315 `ms-dos' compiled as an MS-DOS application.
2316 `windows-nt' compiled as a native W32 application.
2317 `cygwin' compiled using the Cygwin library.
2318 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2319 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2320 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2321 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2323 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2324 doc
: /* Value is string indicating configuration Emacs was built for.
2325 On MS-Windows, the value reflects the OS flavor and version on which
2326 Emacs is running. */);
2327 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2329 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2330 doc
: /* String containing the configuration options Emacs was built with. */);
2331 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2333 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2334 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2336 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2337 doc
: /* Hook run when `kill-emacs' is called.
2338 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2339 in other similar situations), functions placed on this hook should not
2340 expect to be able to interact with the user. To ask for confirmation,
2341 see `kill-emacs-query-functions' instead.
2343 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2344 `noninteractive' was non-nil. */);
2345 Vkill_emacs_hook
= Qnil
;
2347 DEFVAR_LISP ("path-separator", Vpath_separator
,
2348 doc
: /* String containing the character that separates directories in
2349 search paths, such as PATH and other similar environment variables. */);
2352 Vpath_separator
= make_string (&c
, 1);
2355 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2356 doc
: /* The program name that was used to run Emacs.
2357 Any directory names are omitted. */);
2359 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2360 doc
: /* The directory in which the Emacs executable was found, to run it.
2361 The value is nil if that directory's name is not known. */);
2363 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2364 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2365 In an installed Emacs, this is normally nil. It is non-nil if
2366 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2367 within the variable `invocation-directory' or its parent. For example,
2368 this is the case when running an uninstalled Emacs executable from its
2369 build directory. */);
2370 Vinstallation_directory
= Qnil
;
2372 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2373 doc
: /* System locale for messages. */);
2374 Vsystem_messages_locale
= Qnil
;
2376 DEFVAR_LISP ("previous-system-messages-locale",
2377 Vprevious_system_messages_locale
,
2378 doc
: /* Most recently used system locale for messages. */);
2379 Vprevious_system_messages_locale
= Qnil
;
2381 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2382 doc
: /* System locale for time. */);
2383 Vsystem_time_locale
= Qnil
;
2385 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2386 doc
: /* Most recently used system locale for time. */);
2387 Vprevious_system_time_locale
= Qnil
;
2389 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2390 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2391 Vbefore_init_time
= Qnil
;
2393 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2394 doc
: /* Value of `current-time' after loading the init files.
2395 This is nil during initialization. */);
2396 Vafter_init_time
= Qnil
;
2398 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2399 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2400 inhibit_x_resources
= 0;
2402 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2403 doc
: /* Short copyright string for this version of Emacs. */);
2404 Vemacs_copyright
= build_string (emacs_copyright
);
2406 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2407 doc
: /* Version numbers of this version of Emacs. */);
2408 Vemacs_version
= build_string (emacs_version
);
2410 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2411 doc
: /* Alist of dynamic libraries vs external files implementing them.
2412 Each element is a list (LIBRARY FILE...), where the car is a symbol
2413 representing a supported external library, and the rest are strings giving
2414 alternate filenames for that library.
2416 Emacs tries to load the library from the files in the order they appear on
2417 the list; if none is loaded, the running session of Emacs won't have access
2420 Note that image types `pbm' and `xbm' do not need entries in this variable
2421 because they do not depend on external libraries and are always available.
2423 Also note that this is not a generic facility for accessing external
2424 libraries; only those already known by Emacs will be loaded. */);
2425 Vdynamic_library_alist
= Qnil
;
2426 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2429 Vlibrary_cache
= Qnil
;
2430 staticpro (&Vlibrary_cache
);
2433 /* Make sure IS_DAEMON starts up as false. */