1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 Free Software
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
30 #include <close-stream.h>
31 #include <ignore-value.h>
41 #if defined WINDOWSNT || defined HAVE_NTGUI
42 #include "w32select.h"
44 #include "w32common.h"
51 #ifdef HAVE_WINDOW_SYSTEM
53 #endif /* HAVE_WINDOW_SYSTEM */
55 #ifdef NS_IMPL_GNUSTEP
56 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
57 #include <GNUstepBase/GSConfig.h>
61 #include "intervals.h"
62 #include "character.h"
68 #include "blockinput.h"
69 #include "syssignal.h"
72 #include "termhooks.h"
80 #if (defined PROFILING \
81 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
82 # include <sys/gmon.h>
83 extern void moncontrol (int mode
);
92 #include <sys/resource.h>
95 #ifdef HAVE_PERSONALITY_LINUX32
96 #include <sys/personality.h>
99 static const char emacs_version
[] = VERSION
;
100 static const char emacs_copyright
[] = COPYRIGHT
;
102 /* Empty lisp strings. To avoid having to build any others. */
103 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
106 /* Cache for externally loaded libraries. */
107 Lisp_Object Vlibrary_cache
;
110 /* Set after Emacs has started up the first time.
111 Prevents reinitialization of the Lisp world and keymaps
112 on subsequent starts. */
116 extern void unexec_init_emacs_zone (void);
119 #ifdef DOUG_LEA_MALLOC
120 /* Preserves a pointer to the memory allocated that copies that
121 static data inside glibc's malloc. */
122 static void *malloc_state_ptr
;
123 /* From glibc, a routine that returns a copy of the malloc internal state. */
124 extern void *malloc_get_state (void);
125 /* From glibc, a routine that overwrites the malloc internal state. */
126 extern int malloc_set_state (void*);
127 /* True if the MALLOC_CHECK_ environment variable was set while
128 dumping. Used to work around a bug in glibc's malloc. */
129 static bool malloc_using_checking
;
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 /* MSVC needs each string be shorter than 2048 bytes, so the usage
205 strings below are split to not overflow this limit. */
207 Usage: %s [OPTION-OR-FILENAME]...\n\
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\
218 --batch do not do interactive display; implies -q\n\
219 --chdir DIR change to directory DIR\n\
220 --daemon start a server in the background\n\
221 --debug-init enable Emacs Lisp debugger for init file\n\
222 --display, -d DISPLAY use X server DISPLAY\n\
223 --no-desktop do not load a saved desktop\n\
224 --no-init-file, -q load neither ~/.emacs nor default.el\n\
225 --no-shared-memory, -nl do not use shared memory\n\
226 --no-site-file do not load site-start.el\n\
227 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
228 --no-splash do not display a splash screen on startup\n\
229 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
230 --quick, -Q equivalent to:\n\
231 -q --no-site-file --no-site-lisp --no-splash\n\
232 --script FILE run FILE as an Emacs Lisp script\n\
233 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
234 --user, -u USER load ~USER/.emacs instead of your own\n\
240 FILE visit FILE using find-file\n\
241 +LINE go to line LINE in next FILE\n\
242 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
243 --directory, -L DIR add DIR to variable load-path\n\
244 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
245 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
246 --file FILE visit FILE using find-file\n\
247 --find-file FILE visit FILE using find-file\n\
248 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
249 --insert FILE insert contents of FILE into current buffer\n\
250 --kill exit without asking for confirmation\n\
251 --load, -l FILE load Emacs Lisp FILE using the load function\n\
252 --visit FILE visit FILE using find-file\n\
258 --background-color, -bg COLOR window background color\n\
259 --basic-display, -D disable many display features;\n\
260 used for debugging Emacs\n\
261 --border-color, -bd COLOR main border color\n\
262 --border-width, -bw WIDTH width of main border\n\
263 --color, --color=MODE override color mode for character terminals;\n\
264 MODE defaults to `auto', and\n\
265 can also be `never', `always',\n\
266 or a mode name like `ansi8'\n\
267 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
268 --font, -fn FONT default font; must be fixed-width\n\
269 --foreground-color, -fg COLOR window foreground color\n\
270 --fullheight, -fh make the first frame high as the screen\n\
271 --fullscreen, -fs make the first frame fullscreen\n\
272 --fullwidth, -fw make the first frame wide as the screen\n\
273 --maximized, -mm make the first frame maximized\n\
274 --geometry, -g GEOMETRY window geometry\n\
275 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
276 --iconic start Emacs in iconified state\n\
277 --internal-border, -ib WIDTH width between text and main border\n\
278 --line-spacing, -lsp PIXELS additional space to put between lines\n\
279 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
280 --name NAME title for initial Emacs frame\n\
281 --no-blinking-cursor, -nbc disable blinking cursor\n\
282 --reverse-video, -r, -rv switch foreground and background\n\
283 --title, -T TITLE title for initial Emacs frame\n\
284 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
285 --xrm XRESOURCES set additional X resources\n\
286 --parent-id XID set parent window\n\
287 --help display this help and exit\n\
288 --version output version information and exit\n\
292 You can generally also specify long option names with a single -; for\n\
293 example, -batch as well as --batch. You can use any unambiguous\n\
294 abbreviation for a --option.\n\
296 Various environment variables and window system resources also affect\n\
297 Emacs' operation. See the main documentation.\n\
299 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
300 section of the Emacs manual or the file BUGS.\n"
303 /* True if handling a fatal error already. */
304 bool fatal_error_in_progress
;
307 /* NS autrelease pool, for memory management. */
308 static void *ns_pool
;
313 setlocale (int cat
, char const *locale
)
320 /* Report a fatal error due to signal SIG, output a backtrace of at
321 most BACKTRACE_LIMIT lines, and exit. */
323 terminate_due_to_signal (int sig
, int backtrace_limit
)
325 signal (sig
, SIG_DFL
);
326 totally_unblock_input ();
328 /* If fatal error occurs in code below, avoid infinite recursion. */
329 if (! fatal_error_in_progress
)
331 fatal_error_in_progress
= 1;
333 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
334 Fkill_emacs (make_number (sig
));
336 shut_down_emacs (sig
, Qnil
);
337 emacs_backtrace (backtrace_limit
);
340 /* Signal the same code; this time it will really be fatal.
341 Since we're in a signal handler, the signal is blocked, so we
342 have to unblock it if we want to really receive it. */
346 sigemptyset (&unblocked
);
347 sigaddset (&unblocked
, sig
);
348 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
354 /* This shouldn't be executed, but it prevents a warning. */
358 /* Code for dealing with Lisp access to the Unix command line. */
361 init_cmdargs (int argc
, char **argv
, int skip_args
)
364 Lisp_Object name
, dir
, handler
;
365 ptrdiff_t count
= SPECPDL_INDEX ();
366 Lisp_Object raw_name
;
371 raw_name
= build_string (argv
[0]);
373 /* Add /: to the front of the name
374 if it would otherwise be treated as magic. */
375 handler
= Ffind_file_name_handler (raw_name
, Qt
);
376 if (! NILP (handler
))
377 raw_name
= concat2 (build_string ("/:"), raw_name
);
379 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
380 Vinvocation_directory
= Ffile_name_directory (raw_name
);
382 /* If we got no directory in argv[0], search PATH to find where
383 Emacs actually came from. */
384 if (NILP (Vinvocation_directory
))
387 int yes
= openp (Vexec_path
, Vinvocation_name
,
388 Vexec_suffixes
, &found
, make_number (X_OK
));
391 /* Add /: to the front of the name
392 if it would otherwise be treated as magic. */
393 handler
= Ffind_file_name_handler (found
, Qt
);
394 if (! NILP (handler
))
395 found
= concat2 (build_string ("/:"), found
);
396 Vinvocation_directory
= Ffile_name_directory (found
);
400 if (!NILP (Vinvocation_directory
)
401 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
402 /* Emacs was started with relative path, like ./emacs.
404 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
406 Vinstallation_directory
= Qnil
;
408 if (!NILP (Vinvocation_directory
))
410 dir
= Vinvocation_directory
;
412 /* If we are running from the build directory, set DIR to the
413 src subdirectory of the Emacs tree, like on Posix
415 if (SBYTES (dir
) > sizeof ("/i386/") - 1
416 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
418 dir
= Fexpand_file_name (build_string ("../.."), dir
);
419 #else /* !WINDOWSNT */
421 name
= Fexpand_file_name (Vinvocation_name
, dir
);
424 Lisp_Object tem
, lib_src_exists
;
425 Lisp_Object etc_exists
, info_exists
;
427 /* See if dir contains subdirs for use by Emacs.
428 Check for the ones that would exist in a build directory,
429 not including lisp and info. */
430 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
431 lib_src_exists
= Ffile_exists_p (tem
);
434 /* MSDOS installations frequently remove lib-src, but we still
435 must set installation-directory, or else info won't find
436 its files (it uses the value of installation-directory). */
437 tem
= Fexpand_file_name (build_string ("info"), dir
);
438 info_exists
= Ffile_exists_p (tem
);
443 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
445 tem
= Fexpand_file_name (build_string ("etc"), dir
);
446 etc_exists
= Ffile_exists_p (tem
);
447 if (!NILP (etc_exists
))
449 Vinstallation_directory
450 = Ffile_name_as_directory (dir
);
455 /* See if dir's parent contains those subdirs. */
456 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
457 lib_src_exists
= Ffile_exists_p (tem
);
461 /* See the MSDOS commentary above. */
462 tem
= Fexpand_file_name (build_string ("../info"), dir
);
463 info_exists
= Ffile_exists_p (tem
);
468 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
470 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
471 etc_exists
= Ffile_exists_p (tem
);
472 if (!NILP (etc_exists
))
474 tem
= Fexpand_file_name (build_string (".."), dir
);
475 Vinstallation_directory
476 = Ffile_name_as_directory (tem
);
481 /* If the Emacs executable is actually a link,
482 next try the dir that the link points into. */
483 tem
= Ffile_symlink_p (name
);
486 name
= Fexpand_file_name (tem
, dir
);
487 dir
= Ffile_name_directory (name
);
494 Vcommand_line_args
= Qnil
;
496 for (i
= argc
- 1; i
>= 0; i
--)
498 if (i
== 0 || i
> skip_args
)
499 /* For the moment, we keep arguments as is in unibyte strings.
500 They are decoded in the function command-line after we know
501 locale-coding-system. */
503 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
507 unbind_to (count
, Qnil
);
510 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
511 doc
: /* Return the program name that was used to run Emacs.
512 Any directory names are omitted. */)
515 return Fcopy_sequence (Vinvocation_name
);
518 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
520 doc
: /* Return the directory name in which the Emacs executable was located. */)
523 return Fcopy_sequence (Vinvocation_directory
);
528 /* A valid but unlikely value for the TZ environment value.
529 It is OK (though a bit slower) if the user actually chooses this value. */
530 static char const dump_tz
[] = "UtC0";
533 /* Test whether the next argument in ARGV matches SSTR or a prefix of
534 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
535 (the argument is supposed to have a value) store in *VALPTR either
536 the next argument or the portion of this one after the equal sign.
537 ARGV is read starting at position *SKIPPTR; this index is advanced
538 by the number of arguments used.
540 Too bad we can't just use getopt for all of this, but we don't have
541 enough information to do it right. */
544 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
545 int minlen
, char **valptr
, int *skipptr
)
551 /* Don't access argv[argc]; give up in advance. */
552 if (argc
<= *skipptr
+ 1)
555 arg
= argv
[*skipptr
+1];
558 if (strcmp (arg
, sstr
) == 0)
562 *valptr
= argv
[*skipptr
+2];
569 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
570 ? p
- arg
: strlen (arg
));
571 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
573 else if (valptr
== NULL
)
584 else if (argv
[*skipptr
+2] != NULL
)
586 *valptr
= argv
[*skipptr
+2];
596 #ifdef DOUG_LEA_MALLOC
598 /* malloc can be invoked even before main (e.g. by the dynamic
599 linker), so the dumped malloc state must be restored as early as
600 possible using this special hook. */
603 malloc_initialize_hook (void)
607 if (!malloc_using_checking
)
608 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
609 ignored if the heap to be restored was constructed without
610 malloc checking. Can't use unsetenv, since that calls malloc. */
614 for (p
= environ
; p
&& *p
; p
++)
615 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
624 malloc_set_state (malloc_state_ptr
);
625 #ifndef XMALLOC_OVERRUN_CHECK
626 free (malloc_state_ptr
);
631 if (my_heap_start
== 0)
632 my_heap_start
= sbrk (0);
633 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
637 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
639 #endif /* DOUG_LEA_MALLOC */
641 /* Close standard output and standard error, reporting any write
642 errors as best we can. This is intended for use with atexit. */
644 close_output_streams (void)
646 if (close_stream (stdout
) != 0)
648 fprintf (stderr
, "Write error to standard output: %s\n",
651 _exit (EXIT_FAILURE
);
654 if (close_stream (stderr
) != 0)
655 _exit (EXIT_FAILURE
);
660 main (int argc
, char **argv
)
665 char stack_bottom_variable
;
666 bool do_initial_setlocale
;
669 #ifdef HAVE_SETRLIMIT
675 #ifdef DAEMON_MUST_EXEC
684 #ifdef G_SLICE_ALWAYS_MALLOC
685 /* This is used by the Cygwin build. */
686 xputenv ("G_SLICE=always-malloc");
692 extern char my_endbss
[];
693 extern char *my_endbss_static
;
695 if (my_heap_start
== 0)
696 my_heap_start
= sbrk (0);
698 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
702 #if defined WINDOWSNT || defined HAVE_NTGUI
703 /* Set global variables used to detect Windows version. Do this as
704 early as possible. (unexw32.c calls this function as well, but
705 the additional call here is harmless.) */
706 cache_system_info ();
709 #ifdef RUN_TIME_REMAP
711 run_time_remap (argv
[0]);
714 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
717 unexec_init_emacs_zone ();
720 atexit (close_output_streams
);
722 sort_args (argc
, argv
);
724 while (argv
[argc
]) argc
++;
726 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
728 const char *version
, *copyright
;
731 Lisp_Object tem
, tem2
;
732 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
733 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
736 fprintf (stderr
, "Invalid value of `emacs-version'\n");
741 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
746 version
= SSDATA (tem
);
747 copyright
= SSDATA (tem2
);
752 version
= emacs_version
;
753 copyright
= emacs_copyright
;
755 printf ("GNU Emacs %s\n", version
);
756 printf ("%s\n", copyright
);
757 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
758 printf ("You may redistribute copies of Emacs\n");
759 printf ("under the terms of the GNU General Public License.\n");
760 printf ("For more information about these matters, ");
761 printf ("see the file named COPYING.\n");
765 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
766 if (chdir (ch_to_dir
) == -1)
768 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
769 argv
[0], ch_to_dir
, strerror (errno
));
773 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
774 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
776 #ifdef HAVE_PERSONALITY_LINUX32
777 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
779 /* Set this so we only do this once. */
780 xputenv ("EMACS_HEAP_EXEC=true");
782 /* A flag to turn off address randomization which is introduced
783 in linux kernel shipped with fedora core 4 */
784 #define ADD_NO_RANDOMIZE 0x0040000
785 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
786 #undef ADD_NO_RANDOMIZE
788 execvp (argv
[0], argv
);
790 /* If the exec fails, try to dump anyway. */
793 #endif /* HAVE_PERSONALITY_LINUX32 */
795 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
796 /* Extend the stack space available.
797 Don't do that if dumping, since some systems (e.g. DJGPP)
798 might define a smaller stack limit at that time. */
801 && (!noninteractive
|| initialized
)
803 && !getrlimit (RLIMIT_STACK
, &rlim
))
806 extern size_t re_max_failures
;
807 /* Approximate the amount regex.c needs per unit of re_max_failures. */
808 int ratio
= 20 * sizeof (char *);
809 /* Then add 33% to cover the size of the smaller stacks that regex.c
810 successively allocates and discards, on its way to the maximum. */
812 /* Add in some extra to cover
813 what we're likely to use for other reasons. */
814 newlim
= re_max_failures
* ratio
+ 200000;
816 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
817 stack allocation routine for new process that the allocation
818 fails if stack limit is not on page boundary. So, round up the
819 new limit to page boundary. */
820 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
822 if (newlim
> rlim
.rlim_max
)
824 newlim
= rlim
.rlim_max
;
825 /* Don't let regex.c overflow the stack we have. */
826 re_max_failures
= (newlim
- 200000) / ratio
;
828 if (rlim
.rlim_cur
< newlim
)
829 rlim
.rlim_cur
= newlim
;
831 setrlimit (RLIMIT_STACK
, &rlim
);
833 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
835 /* Record (approximately) where the stack begins. */
836 stack_bottom
= &stack_bottom_variable
;
840 #ifndef SYSTEM_MALLOC
841 /* Arrange to get warning messages as memory fills up. */
842 memory_warnings (0, malloc_warning
);
844 /* Call malloc at least once, to run malloc_initialize_hook.
845 Also call realloc and free for consistency. */
846 free (realloc (malloc (4), 4));
848 #endif /* not SYSTEM_MALLOC */
850 #if defined (MSDOS) || defined (WINDOWSNT)
851 /* We do all file input/output as binary files. When we need to translate
852 newlines, we do that manually. */
854 #endif /* MSDOS || WINDOWSNT */
857 if (!isatty (fileno (stdin
)))
858 setmode (fileno (stdin
), O_BINARY
);
859 if (!isatty (fileno (stdout
)))
862 setmode (fileno (stdout
), O_BINARY
);
866 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
867 The build procedure uses this while dumping, to ensure that the
868 dumped Emacs does not have its system locale tables initialized,
869 as that might cause screwups when the dumped Emacs starts up. */
871 char *lc_all
= getenv ("LC_ALL");
872 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
875 /* Set locale now, so that initial error messages are localized properly.
876 fixup_locale must wait until later, since it builds strings. */
877 if (do_initial_setlocale
)
878 setlocale (LC_ALL
, "");
880 inhibit_window_system
= 0;
882 /* Handle the -t switch, which specifies filename to use as terminal. */
886 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
891 result
= emacs_open (term
, O_RDWR
, 0);
892 if (result
< 0 || dup (0) < 0)
894 char *errstring
= strerror (errno
);
895 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
900 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
903 fprintf (stderr
, "Using %s\n", term
);
904 #ifdef HAVE_WINDOW_SYSTEM
905 inhibit_window_system
= 1; /* -t => -nw */
912 /* Command line option --no-windows is deprecated and thus not mentioned
913 in the manual and usage information. */
914 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
915 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
916 inhibit_window_system
= 1;
918 /* Handle the -batch switch, which means don't do interactive display. */
920 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
923 Vundo_outer_limit
= Qnil
;
925 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
927 noninteractive
= 1; /* Set batch mode. */
928 /* Convert --script to -scriptload, un-skip it, and sort again
929 so that it will be handled in proper sequence. */
930 /* FIXME broken for --script=FILE - is that supposed to work? */
931 argv
[skip_args
- 1] = (char *) "-scriptload";
933 sort_args (argc
, argv
);
936 /* Handle the --help option, which gives a usage message. */
937 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
939 printf (USAGE1
, argv
[0], USAGE2
);
945 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
946 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
951 /* Start as a daemon: fork a new child process which will run the
952 rest of the initialization code, then exit.
954 Detaching a daemon requires the following steps:
958 - close the tty file-descriptors
960 We only want to do the last 2 steps once the daemon is ready to
961 serve requests, i.e. after loading .emacs (initialization).
962 OTOH initialization may start subprocesses (e.g. ispell) and these
963 should be run from the proper process (the one that will end up
964 running as daemon) and with the proper "session id" in order for
965 them to keep working after detaching, so fork and setsid need to be
966 performed before initialization.
968 We want to avoid exiting before the server socket is ready, so
969 use a pipe for synchronization. The parent waits for the child
970 to close its end of the pipe (using `daemon-initialized')
972 if (pipe (daemon_pipe
) == -1)
974 fprintf (stderr
, "Cannot pipe!\n");
978 #ifndef DAEMON_MUST_EXEC
980 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
981 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
982 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
985 #else /* DAEMON_MUST_EXEC */
986 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
987 f
= fork (); /* in orig */
989 f
= 0; /* in exec'd */
990 #endif /* !DAEMON_MUST_EXEC */
996 /* Close unused writing end of the pipe. */
997 close (daemon_pipe
[1]);
999 /* Just wait for the child to close its end of the pipe. */
1002 retval
= read (daemon_pipe
[0], &buf
, 1);
1004 while (retval
== -1 && errno
== EINTR
);
1008 fprintf (stderr
, "Error reading status from child\n");
1011 else if (retval
== 0)
1013 fprintf (stderr
, "Error: server did not start correctly\n");
1017 close (daemon_pipe
[0]);
1022 fprintf (stderr
, "Cannot fork!\n");
1026 #ifdef DAEMON_MUST_EXEC
1028 /* In orig process, forked as child, OR in exec'd. */
1029 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1030 { /* In orig, child: now exec w/special daemon name. */
1033 snprintf (fdStr
, sizeof fdStr
,
1034 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1035 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1037 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1039 fprintf (stderr
, "daemon: child name too long\n");
1043 argv
[skip_args
] = fdStr
;
1045 execvp (argv
[0], argv
);
1046 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1050 /* In exec'd: parse special dname into pipe and name info. */
1051 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1052 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1054 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1057 dname_arg2
[0] = '\0';
1058 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1060 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1062 #endif /* DAEMON_MUST_EXEC */
1065 daemon_name
= xstrdup (dname_arg
);
1066 /* Close unused reading end of the pipe. */
1067 close (daemon_pipe
[0]);
1068 /* Make sure that the used end of the pipe is closed on exec, so
1069 that it is not accessible to programs started from .emacs. */
1070 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1074 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1079 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1080 malloc_enable_thread ();
1083 init_signals (dumping
);
1085 noninteractive1
= noninteractive
;
1087 /* Perform basic initializations (not merely interning symbols). */
1094 init_charset_once ();
1095 init_coding_once ();
1096 init_syntax_once (); /* Create standard syntax table. */
1097 init_category_once (); /* Create standard category table. */
1098 init_casetab_once (); /* Must be done before init_buffer_once. */
1099 init_buffer_once (); /* Create buffer table and some buffers. */
1100 init_minibuf_once (); /* Create list of minibuffers. */
1101 /* Must precede init_window_once. */
1103 /* Call syms_of_xfaces before init_window_once because that
1104 function creates Vterminal_frame. Termcap frames now use
1105 faces, and the face implementation uses some symbols as
1108 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1109 be better to arrange things not to have this dependency. */
1111 /* Call syms_of_keyboard before init_window_once because
1112 keyboard sets up symbols that include some face names that
1113 the X support will want to use. This can happen when
1114 CANNOT_DUMP is defined. */
1115 syms_of_keyboard ();
1117 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1119 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1121 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1123 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1125 /* Before syms_of_coding because it initializes Qcharsetp. */
1127 /* Before init_window_once, because it sets up the
1128 Vcoding_system_hash_table. */
1129 syms_of_coding (); /* This should be after syms_of_fileio. */
1131 init_window_once (); /* Init the window system. */
1132 #ifdef HAVE_WINDOW_SYSTEM
1133 init_fringe_once (); /* Swap bitmaps if necessary. */
1134 #endif /* HAVE_WINDOW_SYSTEM */
1139 if (do_initial_setlocale
)
1142 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1143 Vsystem_time_locale
= Vprevious_system_time_locale
;
1148 running_asynch_code
= 0;
1152 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1155 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1158 ns_pool
= ns_alloc_autorelease_pool ();
1159 if (!noninteractive
)
1161 #ifdef NS_IMPL_COCOA
1162 if (skip_args
< argc
)
1164 /* FIXME: Do the right thing if getenv returns NULL, or if
1166 if (!strncmp (argv
[skip_args
], "-psn", 4))
1169 chdir (getenv ("HOME"));
1171 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1174 chdir (getenv ("HOME"));
1179 #endif /* HAVE_NS */
1181 #ifdef HAVE_X_WINDOWS
1182 /* Stupid kludge to catch command-line display spec. We can't
1183 handle this argument entirely in window system dependent code
1184 because we don't even know which window system dependent code
1185 to run until we've recognized this argument. */
1187 char *displayname
= 0;
1188 int count_before
= skip_args
;
1190 /* Skip any number of -d options, but only use the last one. */
1193 int count_before_this
= skip_args
;
1195 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1197 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1202 count_before
= count_before_this
;
1205 /* If we have the form --display=NAME,
1206 convert it into -d name.
1207 This requires inserting a new element into argv. */
1208 if (displayname
&& count_before
< skip_args
)
1210 if (skip_args
== count_before
+ 1)
1212 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1213 (argc
- (count_before
+ 2)) * sizeof *argv
);
1214 argv
[count_before
+ 2] = displayname
;
1217 argv
[count_before
+ 1] = (char *) "-d";
1222 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1223 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1227 /* Don't actually discard this arg. */
1228 skip_args
= count_before
;
1230 #else /* !HAVE_X_WINDOWS */
1233 int count_before
= skip_args
;
1235 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1236 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1239 skip_args
= count_before
;
1243 /* argmatch must not be used after here,
1244 except when building temacs
1245 because the -d argument has not been skipped in skip_args. */
1248 /* Call early 'cause init_environment needs it. */
1250 /* Set defaults for several environment variables. */
1252 init_environment (argc
, argv
, skip_args
);
1257 #ifdef HAVE_GFILENOTIFY
1258 globals_of_gfilenotify ();
1263 #ifdef HAVE_W32NOTIFY
1264 globals_of_w32notify ();
1266 /* Initialize environment from registry settings. */
1267 init_environment (argv
);
1268 init_ntproc (dumping
); /* must precede init_editfns. */
1271 /* Initialize and GC-protect Vinitial_environment and
1272 Vprocess_environment before set_initial_environment fills them
1275 syms_of_callproc ();
1276 /* egetenv is a pretty low-level facility, which may get called in
1277 many circumstances; it seems flimsy to put off initializing it
1278 until calling init_callproc. Do not do it when dumping. */
1280 set_initial_environment ();
1282 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1283 if this is not done. Do it after set_global_environment so that we
1284 don't pollute Vglobal_environment. */
1285 /* Setting LANG here will defeat the startup locale processing... */
1290 init_buffer (); /* Init default directory of main buffer. */
1292 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1293 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1297 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1298 Lisp_Object old_log_max
;
1299 old_log_max
= Vmessage_log_max
;
1300 XSETFASTINT (Vmessage_log_max
, 0);
1301 message_dolog ("", 0, 1, 0);
1302 Vmessage_log_max
= old_log_max
;
1305 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1309 /* Check to see if Emacs has been installed correctly. */
1310 check_windows_init_file ();
1313 /* Intern the names of all standard functions and variables;
1314 define standard keys. */
1318 /* The basic levels of Lisp must come first. Note that
1319 syms_of_data and some others have already been called. */
1324 syms_of_floatfns ();
1327 syms_of_bytecode ();
1329 syms_of_casefiddle ();
1331 syms_of_category ();
1333 syms_of_character ();
1340 syms_of_filelock ();
1343 /* syms_of_keymap (); */
1351 syms_of_terminal ();
1357 syms_of_textprop ();
1358 syms_of_composite ();
1361 #endif /* WINDOWSNT */
1368 #ifdef HAVE_WINDOW_SYSTEM
1371 #endif /* HAVE_WINDOW_SYSTEM */
1372 #ifdef HAVE_X_WINDOWS
1377 syms_of_xsettings ();
1384 #endif /* HAVE_X_WINDOWS */
1397 #endif /* HAVE_NTGUI */
1399 #if defined WINDOWSNT || defined HAVE_NTGUI
1400 syms_of_w32select ();
1407 syms_of_win16select ();
1414 syms_of_nsselect ();
1416 #endif /* HAVE_NS */
1422 #ifdef HAVE_GFILENOTIFY
1423 syms_of_gfilenotify ();
1424 #endif /* HAVE_GFILENOTIFY */
1428 #endif /* HAVE_INOTIFY */
1431 syms_of_dbusbind ();
1432 #endif /* HAVE_DBUS */
1436 #ifdef HAVE_W32NOTIFY
1437 syms_of_w32notify ();
1438 #endif /* HAVE_W32NOTIFY */
1439 #endif /* WINDOWSNT */
1441 syms_of_profiler ();
1443 keys_of_casefiddle ();
1446 keys_of_keyboard ();
1452 /* Initialization that must be done even if the global variable
1453 initialized is non zero. */
1455 globals_of_w32font ();
1456 globals_of_w32fns ();
1457 globals_of_w32menu ();
1458 #endif /* HAVE_NTGUI */
1460 #if defined WINDOWSNT || defined HAVE_NTGUI
1461 globals_of_w32select ();
1467 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1468 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1469 init_keyboard (); /* This too must precede init_sys_modes. */
1470 if (!noninteractive
)
1471 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1473 #ifdef HAVE_WINDOW_SYSTEM
1475 #endif /* HAVE_WINDOW_SYSTEM */
1483 /* Handle -l loadup, args passed by Makefile. */
1484 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1485 Vtop_level
= Fcons (intern_c_string ("load"),
1486 Fcons (build_string (file
), Qnil
));
1487 /* Unless next switch is -nl, load "loadup.el" first thing. */
1489 Vtop_level
= Fcons (intern_c_string ("load"),
1490 Fcons (build_string ("loadup.el"), Qnil
));
1497 /* If the execution TZ happens to be the same as the dump TZ,
1498 change it to some other value and then change it back,
1499 to force the underlying implementation to reload the TZ info.
1500 This is needed on implementations that load TZ info from files,
1501 since the TZ file contents may differ between dump and execution. */
1502 char *tz
= getenv ("TZ");
1503 if (tz
&& !strcmp (tz
, dump_tz
))
1513 /* Set up for profiling. This is known to work on FreeBSD,
1514 GNU/Linux and MinGW. It might work on some other systems too.
1515 Give it a try and tell us if it works on your system. To compile
1516 for profiling, use the configure option --enable-profiling. */
1517 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1522 extern unsigned char etext
asm ("etext");
1528 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1537 #ifdef LOCALTIME_CACHE
1538 /* Some versions of localtime have a bug. They cache the value of the time
1539 zone rather than looking it up every time. Since localtime() is
1540 called to bolt the undumping time into the undumped emacs, this
1541 results in localtime ignoring the TZ environment variable.
1542 This flushes the new TZ value into localtime. */
1544 #endif /* defined (LOCALTIME_CACHE) */
1546 /* Enter editor command loop. This never returns. */
1552 /* Sort the args so we can find the most important ones
1553 at the beginning of argv. */
1555 /* First, here's a table of all the standard options. */
1557 struct standard_args
1560 const char *longname
;
1565 static const struct standard_args standard_args
[] =
1567 { "-version", "--version", 150, 0 },
1568 { "-chdir", "--chdir", 130, 1 },
1569 { "-t", "--terminal", 120, 1 },
1570 { "-nw", "--no-window-system", 110, 0 },
1571 { "-nw", "--no-windows", 110, 0 },
1572 { "-batch", "--batch", 100, 0 },
1573 { "-script", "--script", 100, 1 },
1574 { "-daemon", "--daemon", 99, 0 },
1575 { "-help", "--help", 90, 0 },
1576 { "-nl", "--no-loadup", 70, 0 },
1577 { "-nsl", "--no-site-lisp", 65, 0 },
1578 /* -d must come last before the options handled in startup.el. */
1579 { "-d", "--display", 60, 1 },
1580 { "-display", 0, 60, 1 },
1581 /* Now for the options handled in `command-line' (startup.el). */
1582 /* (Note that to imply -nsl, -Q is partially handled here.) */
1583 { "-Q", "--quick", 55, 0 },
1584 { "-quick", 0, 55, 0 },
1585 { "-q", "--no-init-file", 50, 0 },
1586 { "-no-init-file", 0, 50, 0 },
1587 { "-no-site-file", "--no-site-file", 40, 0 },
1588 { "-u", "--user", 30, 1 },
1589 { "-user", 0, 30, 1 },
1590 { "-debug-init", "--debug-init", 20, 0 },
1591 { "-iconic", "--iconic", 15, 0 },
1592 { "-D", "--basic-display", 12, 0},
1593 { "-basic-display", 0, 12, 0},
1594 { "-nbc", "--no-blinking-cursor", 12, 0 },
1595 /* Now for the options handled in `command-line-1' (startup.el). */
1596 { "-nbi", "--no-bitmap-icon", 10, 0 },
1597 { "-bg", "--background-color", 10, 1 },
1598 { "-background", 0, 10, 1 },
1599 { "-fg", "--foreground-color", 10, 1 },
1600 { "-foreground", 0, 10, 1 },
1601 { "-bd", "--border-color", 10, 1 },
1602 { "-bw", "--border-width", 10, 1 },
1603 { "-ib", "--internal-border", 10, 1 },
1604 { "-ms", "--mouse-color", 10, 1 },
1605 { "-cr", "--cursor-color", 10, 1 },
1606 { "-fn", "--font", 10, 1 },
1607 { "-font", 0, 10, 1 },
1608 { "-fs", "--fullscreen", 10, 0 },
1609 { "-fw", "--fullwidth", 10, 0 },
1610 { "-fh", "--fullheight", 10, 0 },
1611 { "-mm", "--maximized", 10, 0 },
1612 { "-g", "--geometry", 10, 1 },
1613 { "-geometry", 0, 10, 1 },
1614 { "-T", "--title", 10, 1 },
1615 { "-title", 0, 10, 1 },
1616 { "-name", "--name", 10, 1 },
1617 { "-xrm", "--xrm", 10, 1 },
1618 { "-parent-id", "--parent-id", 10, 1 },
1619 { "-r", "--reverse-video", 5, 0 },
1621 { "-reverse", 0, 5, 0 },
1622 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1623 { "-vb", "--vertical-scroll-bars", 5, 0 },
1624 { "-color", "--color", 5, 0},
1625 { "-no-splash", "--no-splash", 3, 0 },
1626 { "-no-desktop", "--no-desktop", 3, 0 },
1628 { "-NSAutoLaunch", 0, 5, 1 },
1629 { "-NXAutoLaunch", 0, 5, 1 },
1630 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1631 { "-_NSMachLaunch", 0, 85, 1 },
1632 { "-MachLaunch", 0, 85, 1 },
1633 { "-macosx", 0, 85, 0 },
1634 { "-NSHost", 0, 85, 1 },
1636 /* These have the same priority as ordinary file name args,
1637 so they are not reordered with respect to those. */
1638 { "-L", "--directory", 0, 1 },
1639 { "-directory", 0, 0, 1 },
1640 { "-l", "--load", 0, 1 },
1641 { "-load", 0, 0, 1 },
1642 /* This has no longname, because using --scriptload confuses sort_args,
1643 because then the --script long option seems to match twice; ie
1644 you can't have a long option which is a prefix of another long
1645 option. In any case, this is entirely an internal option. */
1646 { "-scriptload", NULL
, 0, 1 },
1647 { "-f", "--funcall", 0, 1 },
1648 { "-funcall", 0, 0, 1 },
1649 { "-eval", "--eval", 0, 1 },
1650 { "-execute", "--execute", 0, 1 },
1651 { "-find-file", "--find-file", 0, 1 },
1652 { "-visit", "--visit", 0, 1 },
1653 { "-file", "--file", 0, 1 },
1654 { "-insert", "--insert", 0, 1 },
1656 { "-NXOpen", 0, 0, 1 },
1657 { "-NXOpenTemp", 0, 0, 1 },
1658 { "-NSOpen", 0, 0, 1 },
1659 { "-NSOpenTemp", 0, 0, 1 },
1660 { "-GSFilePath", 0, 0, 1 },
1662 /* This should be processed after ordinary file name args and the like. */
1663 { "-kill", "--kill", -10, 0 },
1666 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1667 so that the highest priority ones come first.
1668 Do not change the order of elements of equal priority.
1669 If an option takes an argument, keep it and its argument together.
1671 If an option that takes no argument appears more
1672 than once, eliminate all but one copy of it. */
1675 sort_args (int argc
, char **argv
)
1677 char **new = xmalloc (argc
* sizeof *new);
1678 /* For each element of argv,
1679 the corresponding element of options is:
1680 0 for an option that takes no arguments,
1681 1 for an option that takes one argument, etc.
1682 -1 for an ordinary non-option argument. */
1683 int *options
= xnmalloc (argc
, sizeof *options
);
1684 int *priority
= xnmalloc (argc
, sizeof *priority
);
1686 int incoming_used
= 1;
1690 /* Categorize all the options,
1691 and figure out which argv elts are option arguments. */
1692 for (from
= 1; from
< argc
; from
++)
1696 if (argv
[from
][0] == '-')
1700 /* If we have found "--", don't consider
1701 any more arguments as options. */
1702 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1704 /* Leave the "--", and everything following it, at the end. */
1705 for (; from
< argc
; from
++)
1707 priority
[from
] = -100;
1713 /* Look for a match with a known old-fashioned option. */
1714 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1715 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1717 options
[from
] = standard_args
[i
].nargs
;
1718 priority
[from
] = standard_args
[i
].priority
;
1719 if (from
+ standard_args
[i
].nargs
>= argc
)
1720 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1721 from
+= standard_args
[i
].nargs
;
1725 /* Look for a match with a known long option.
1726 MATCH is -1 if no match so far, -2 if two or more matches so far,
1727 >= 0 (the table index of the match) if just one match so far. */
1728 if (argv
[from
][1] == '-')
1730 char const *equals
= strchr (argv
[from
], '=');
1732 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1737 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1738 if (standard_args
[i
].longname
1739 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1748 /* If we found exactly one match, use that. */
1751 options
[from
] = standard_args
[match
].nargs
;
1752 priority
[from
] = standard_args
[match
].priority
;
1753 /* If --OPTION=VALUE syntax is used,
1754 this option uses just one argv element. */
1757 if (from
+ options
[from
] >= argc
)
1758 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1759 from
+= options
[from
];
1761 /* FIXME When match < 0, shouldn't there be some error,
1762 or at least indication to the user that there was a
1769 /* Copy the arguments, in order of decreasing priority, to NEW. */
1771 while (incoming_used
< argc
)
1774 int best_priority
= -9999;
1776 /* Find the highest priority remaining option.
1777 If several have equal priority, take the first of them. */
1778 for (from
= 1; from
< argc
; from
++)
1780 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1782 best_priority
= priority
[from
];
1785 /* Skip option arguments--they are tied to the options. */
1786 if (options
[from
] > 0)
1787 from
+= options
[from
];
1793 /* Copy the highest priority remaining option, with its args, to NEW.
1794 Unless it is a duplicate of the previous one. */
1795 if (! (options
[best
] == 0
1796 && ! strcmp (new[to
- 1], argv
[best
])))
1798 new[to
++] = argv
[best
];
1799 for (i
= 0; i
< options
[best
]; i
++)
1800 new[to
++] = argv
[best
+ i
+ 1];
1803 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1805 /* Clear out this option in ARGV. */
1807 for (i
= 0; i
< options
[best
]; i
++)
1808 argv
[best
+ i
+ 1] = 0;
1811 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1815 memcpy (argv
, new, sizeof (char *) * argc
);
1822 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1823 doc
: /* Exit the Emacs job and kill it.
1824 If ARG is an integer, return ARG as the exit program code.
1825 If ARG is a string, stuff it as keyboard input.
1827 This function is called upon receipt of the signals SIGTERM
1828 or SIGHUP, and upon SIGINT in batch mode.
1830 The value of `kill-emacs-hook', if not void,
1831 is a list of functions (of no args),
1832 all of which are called before Emacs is actually killed. */)
1835 struct gcpro gcpro1
;
1843 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1845 waiting_for_input
= 0;
1846 Frun_hooks (1, &Qkill_emacs_hook
);
1849 #ifdef HAVE_X_WINDOWS
1850 /* Transfer any clipboards we own to the clipboard manager. */
1851 x_clipboard_manager_save_all ();
1854 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1857 ns_release_autorelease_pool (ns_pool
);
1860 /* If we have an auto-save list file,
1861 kill it because we are exiting Emacs deliberately (not crashing).
1862 Do it after shut_down_emacs, which does an auto-save. */
1863 if (STRINGP (Vauto_save_list_file_name
))
1865 Lisp_Object listfile
;
1866 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1867 unlink (SSDATA (listfile
));
1871 exit_code
= (XINT (arg
) < 0
1872 ? XINT (arg
) | INT_MIN
1873 : XINT (arg
) & INT_MAX
);
1875 exit_code
= EXIT_SUCCESS
;
1880 /* Perform an orderly shutdown of Emacs. Autosave any modified
1881 buffers, kill any child processes, clean up the terminal modes (if
1882 we're in the foreground), and other stuff like that. Don't perform
1883 any redisplay; this may be called when Emacs is shutting down in
1884 the background, or after its X connection has died.
1886 If SIG is a signal number, print a message for it.
1888 This is called by fatal signal handlers, X protocol error handlers,
1892 shut_down_emacs (int sig
, Lisp_Object stuff
)
1894 /* Prevent running of hooks from now on. */
1897 /* Don't update display from now on. */
1898 Vinhibit_redisplay
= Qt
;
1900 /* If we are controlling the terminal, reset terminal modes. */
1903 pid_t pgrp
= getpgrp ();
1904 pid_t tpgrp
= tcgetpgrp (0);
1905 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1907 reset_all_sys_modes ();
1908 if (sig
&& sig
!= SIGTERM
)
1910 static char const format
[] = "Fatal error %d: ";
1911 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1912 int buflen
= sprintf (buf
, format
, sig
);
1913 char const *sig_desc
= safe_strsignal (sig
);
1914 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1915 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1921 reset_all_sys_modes ();
1924 stuff_buffered_input (stuff
);
1926 inhibit_sentinels
= 1;
1927 kill_buffer_processes (Qnil
);
1928 Fdo_auto_save (Qt
, Qnil
);
1930 #ifdef CLASH_DETECTION
1931 unlock_all_files ();
1934 /* There is a tendency for a SIGIO signal to arrive within exit,
1935 and cause a SIGHUP because the input descriptor is already closed. */
1939 /* Do this only if terminating normally, we want glyph matrices
1940 etc. in a core dump. */
1941 if (sig
== 0 || sig
== SIGTERM
)
1943 check_glyph_memory ();
1944 check_message_stack ();
1952 ns_term_shutdown (sig
);
1956 xml_cleanup_parser ();
1970 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1971 doc
: /* Dump current state of Emacs into executable file FILENAME.
1972 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1973 This is used in the file `loadup.el' when building Emacs.
1975 You must run Emacs in batch mode in order to dump it. */)
1976 (Lisp_Object filename
, Lisp_Object symfile
)
1980 ptrdiff_t count
= SPECPDL_INDEX ();
1984 if (! noninteractive
)
1985 error ("Dumping Emacs works only in batch mode");
1989 /* Warn if the gap between BSS end and heap start is larger than this. */
1990 # define MAX_HEAP_BSS_DIFF (1024*1024)
1992 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1994 fprintf (stderr
, "**************************************************\n");
1995 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
1996 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
1998 fprintf (stderr
, "or something similar is in effect. The dump may\n");
1999 fprintf (stderr
, "fail because of this. See the section about\n");
2000 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2001 fprintf (stderr
, "**************************************************\n");
2003 #endif /* GNU_LINUX */
2005 /* Bind `command-line-processed' to nil before dumping,
2006 so that the dumped Emacs will process its command line
2007 and set up to work with X windows if appropriate. */
2008 symbol
= intern ("command-line-processed");
2009 specbind (symbol
, Qnil
);
2011 CHECK_STRING (filename
);
2012 filename
= Fexpand_file_name (filename
, Qnil
);
2013 if (!NILP (symfile
))
2015 CHECK_STRING (symfile
);
2016 if (SCHARS (symfile
))
2017 symfile
= Fexpand_file_name (symfile
, Qnil
);
2021 Vpurify_flag
= Qnil
;
2024 set_time_zone_rule (dump_tz
);
2025 #ifndef LOCALTIME_CACHE
2026 /* Force a tz reload, since set_time_zone_rule doesn't. */
2032 /* Tell malloc where start of impure now is. */
2033 /* Also arrange for warnings when nearly out of space. */
2034 #ifndef SYSTEM_MALLOC
2036 /* On Windows, this was done before dumping, and that once suffices.
2037 Meanwhile, my_edata is not valid on Windows. */
2039 extern char my_edata
[];
2040 memory_warnings (my_edata
, malloc_warning
);
2042 #endif /* not WINDOWSNT */
2043 #endif /* not SYSTEM_MALLOC */
2044 #ifdef DOUG_LEA_MALLOC
2045 malloc_state_ptr
= malloc_get_state ();
2048 #ifdef USE_MMAP_FOR_BUFFERS
2051 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2052 #ifdef USE_MMAP_FOR_BUFFERS
2055 #ifdef DOUG_LEA_MALLOC
2056 free (malloc_state_ptr
);
2060 Vlibrary_cache
= Qnil
;
2062 #ifdef HAVE_WINDOW_SYSTEM
2063 reset_image_types ();
2068 return unbind_to (count
, Qnil
);
2071 #endif /* not CANNOT_DUMP */
2074 /* Recover from setlocale (LC_ALL, ""). */
2078 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2079 so that numbers are read and printed properly for Emacs Lisp. */
2080 setlocale (LC_NUMERIC
, "C");
2083 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2086 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2088 if (! EQ (*plocale
, desired_locale
))
2090 *plocale
= desired_locale
;
2091 setlocale (category
, (STRINGP (desired_locale
)
2092 ? SSDATA (desired_locale
)
2097 /* Set system time locale to match Vsystem_time_locale, if possible. */
2099 synchronize_system_time_locale (void)
2101 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2102 Vsystem_time_locale
);
2105 /* Set system messages locale to match Vsystem_messages_locale, if
2108 synchronize_system_messages_locale (void)
2111 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2112 Vsystem_messages_locale
);
2115 #endif /* HAVE_SETLOCALE */
2119 decode_env_path (const char *evarname
, const char *defalt
)
2121 const char *path
, *p
;
2122 Lisp_Object lpath
, element
, tem
;
2125 const char *emacs_dir
= egetenv ("emacs_dir");
2126 static const char *emacs_dir_env
= "%emacs_dir%/";
2127 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2130 /* It's okay to use getenv here, because this function is only used
2131 to initialize variables when Emacs starts up, and isn't called
2134 path
= getenv (evarname
);
2145 /* Ensure values from the environment use the proper directory separator. */
2148 char *path_copy
= alloca (strlen (path
) + 1);
2149 strcpy (path_copy
, path
);
2150 dostounix_filename (path_copy
, 0);
2157 p
= strchr (path
, SEPCHAR
);
2159 p
= path
+ strlen (path
);
2160 element
= (p
- path
? make_string (path
, p
- path
)
2161 : build_string ("."));
2163 /* Relative file names in the default path are interpreted as
2164 being relative to $emacs_dir. */
2165 if (emacs_dir
&& defaulted
2166 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2167 element
= Fexpand_file_name (Fsubstring (element
,
2168 make_number (emacs_dir_len
),
2170 build_string (emacs_dir
));
2173 /* Add /: to the front of the name
2174 if it would otherwise be treated as magic. */
2175 tem
= Ffind_file_name_handler (element
, Qt
);
2177 /* However, if the handler says "I'm safe",
2178 don't bother adding /:. */
2182 prop
= Fget (tem
, intern ("safe-magic"));
2188 element
= concat2 (build_string ("/:"), element
);
2190 lpath
= Fcons (element
, lpath
);
2196 return Fnreverse (lpath
);
2199 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2200 doc
: /* Return non-nil if the current emacs process is a daemon.
2201 If the daemon was given a name argument, return that name. */)
2206 return build_string (daemon_name
);
2213 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2214 doc
: /* Mark the Emacs daemon as being initialized.
2215 This finishes the daemonization process by doing the other half of detaching
2216 from the parent process and its tty file descriptors. */)
2223 error ("This function can only be called if emacs is run as a daemon");
2225 if (daemon_pipe
[1] < 0)
2226 error ("The daemon has already been initialized");
2228 if (NILP (Vafter_init_time
))
2229 error ("This function can only be called after loading the init files");
2231 /* Get rid of stdin, stdout and stderr. */
2232 nfd
= open ("/dev/null", O_RDWR
);
2234 err
|= dup2 (nfd
, 0) < 0;
2235 err
|= dup2 (nfd
, 1) < 0;
2236 err
|= dup2 (nfd
, 2) < 0;
2237 err
|= close (nfd
) != 0;
2239 /* Closing the pipe will notify the parent that it can exit.
2240 FIXME: In case some other process inherited the pipe, closing it here
2241 won't notify the parent because it's still open elsewhere, so we
2242 additionally send a byte, just to make sure the parent really exits.
2243 Instead, we should probably close the pipe in start-process and
2244 call-process to make sure the pipe is never inherited by
2246 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2247 err
|= close (daemon_pipe
[1]) != 0;
2248 /* Set it to an invalid value so we know we've already run this function. */
2249 daemon_pipe
[1] = -1;
2252 error ("I/O error during daemon initialization");
2257 syms_of_emacs (void)
2259 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2260 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2261 DEFSYM (Qkill_emacs
, "kill-emacs");
2262 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2265 defsubr (&Sdump_emacs
);
2268 defsubr (&Skill_emacs
);
2270 defsubr (&Sinvocation_name
);
2271 defsubr (&Sinvocation_directory
);
2272 defsubr (&Sdaemonp
);
2273 defsubr (&Sdaemon_initialized
);
2275 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2276 doc
: /* Args passed by shell to Emacs, as a list of strings.
2277 Many arguments are deleted from the list as they are processed. */);
2279 DEFVAR_LISP ("system-type", Vsystem_type
,
2280 doc
: /* The value is a symbol indicating the type of operating system you are using.
2282 `gnu' compiled for a GNU Hurd system.
2283 `gnu/linux' compiled for a GNU/Linux system.
2284 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2285 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2286 `ms-dos' compiled as an MS-DOS application.
2287 `windows-nt' compiled as a native W32 application.
2288 `cygwin' compiled using the Cygwin library.
2289 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2290 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2291 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2292 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2294 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2295 doc
: /* Value is string indicating configuration Emacs was built for.
2296 On MS-Windows, the value reflects the OS flavor and version on which
2297 Emacs is running. */);
2298 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2300 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2301 doc
: /* String containing the configuration options Emacs was built with. */);
2302 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2304 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2305 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2307 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2308 doc
: /* Hook run when `kill-emacs' is called.
2309 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2310 in other similar situations), functions placed on this hook should not
2311 expect to be able to interact with the user. To ask for confirmation,
2312 see `kill-emacs-query-functions' instead.
2314 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2315 `noninteractive' was non-nil. */);
2316 Vkill_emacs_hook
= Qnil
;
2318 DEFVAR_LISP ("path-separator", Vpath_separator
,
2319 doc
: /* String containing the character that separates directories in
2320 search paths, such as PATH and other similar environment variables. */);
2323 Vpath_separator
= make_string (&c
, 1);
2326 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2327 doc
: /* The program name that was used to run Emacs.
2328 Any directory names are omitted. */);
2330 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2331 doc
: /* The directory in which the Emacs executable was found, to run it.
2332 The value is nil if that directory's name is not known. */);
2334 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2335 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2336 In an installed Emacs, this is normally nil. It is non-nil if
2337 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2338 within the variable `invocation-directory' or its parent. For example,
2339 this is the case when running an uninstalled Emacs executable from its
2340 build directory. */);
2341 Vinstallation_directory
= Qnil
;
2343 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2344 doc
: /* System locale for messages. */);
2345 Vsystem_messages_locale
= Qnil
;
2347 DEFVAR_LISP ("previous-system-messages-locale",
2348 Vprevious_system_messages_locale
,
2349 doc
: /* Most recently used system locale for messages. */);
2350 Vprevious_system_messages_locale
= Qnil
;
2352 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2353 doc
: /* System locale for time. */);
2354 Vsystem_time_locale
= Qnil
;
2356 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2357 doc
: /* Most recently used system locale for time. */);
2358 Vprevious_system_time_locale
= Qnil
;
2360 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2361 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2362 Vbefore_init_time
= Qnil
;
2364 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2365 doc
: /* Value of `current-time' after loading the init files.
2366 This is nil during initialization. */);
2367 Vafter_init_time
= Qnil
;
2369 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2370 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2371 inhibit_x_resources
= 0;
2373 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2374 doc
: /* Short copyright string for this version of Emacs. */);
2375 Vemacs_copyright
= build_string (emacs_copyright
);
2377 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2378 doc
: /* Version numbers of this version of Emacs. */);
2379 Vemacs_version
= build_string (emacs_version
);
2381 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2382 doc
: /* Alist of dynamic libraries vs external files implementing them.
2383 Each element is a list (LIBRARY FILE...), where the car is a symbol
2384 representing a supported external library, and the rest are strings giving
2385 alternate filenames for that library.
2387 Emacs tries to load the library from the files in the order they appear on
2388 the list; if none is loaded, the running session of Emacs won't have access
2391 Note that image types `pbm' and `xbm' do not need entries in this variable
2392 because they do not depend on external libraries and are always available.
2394 Also note that this is not a generic facility for accessing external
2395 libraries; only those already known by Emacs will be loaded. */);
2396 Vdynamic_library_alist
= Qnil
;
2397 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2400 Vlibrary_cache
= Qnil
;
2401 staticpro (&Vlibrary_cache
);
2404 /* Make sure IS_DAEMON starts up as false. */