Merge from gnulib
[emacs.git] / src / emacs.c
blob70db900246a93a2194541e323b7b03c041e02ab1
1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2015 Free Software
4 Foundation, Inc.
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/>. */
21 #define INLINE EXTERN_INLINE
22 #include <config.h>
24 #include <errno.h>
25 #include <stdio.h>
27 #include <sys/types.h>
28 #include <sys/file.h>
29 #include <unistd.h>
31 #include <close-stream.h>
33 #define MAIN_PROGRAM
34 #include "lisp.h"
36 #ifdef WINDOWSNT
37 #include <fcntl.h>
38 #include <sys/socket.h>
39 #include <mbstring.h>
40 #include "w32.h"
41 #include "w32heap.h"
42 #endif
44 #if defined WINDOWSNT || defined HAVE_NTGUI
45 #include "w32select.h"
46 #include "w32font.h"
47 #include "w32common.h"
48 #endif
50 #if defined CYGWIN
51 #include "cygw32.h"
52 #endif
54 #ifdef MSDOS
55 #include <binary-io.h>
56 #endif
58 #ifdef HAVE_WINDOW_SYSTEM
59 #include TERM_HEADER
60 #endif /* HAVE_WINDOW_SYSTEM */
62 #include "commands.h"
63 #include "intervals.h"
64 #include "character.h"
65 #include "buffer.h"
66 #include "window.h"
68 #include "systty.h"
69 #include "atimer.h"
70 #include "blockinput.h"
71 #include "syssignal.h"
72 #include "process.h"
73 #include "frame.h"
74 #include "termhooks.h"
75 #include "keyboard.h"
76 #include "keymap.h"
77 #include "category.h"
78 #include "charset.h"
79 #include "composite.h"
80 #include "dispextern.h"
81 #include "regex.h"
82 #include "syntax.h"
83 #include "sysselect.h"
84 #include "systime.h"
86 #include "gnutls.h"
88 #if (defined PROFILING \
89 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
90 # include <sys/gmon.h>
91 extern void moncontrol (int mode);
92 #endif
94 #ifdef HAVE_SETLOCALE
95 #include <locale.h>
96 #endif
98 #ifdef HAVE_SETRLIMIT
99 #include <sys/time.h>
100 #include <sys/resource.h>
101 #endif
103 #ifdef HAVE_PERSONALITY_LINUX32
104 #include <sys/personality.h>
105 #endif
107 static const char emacs_version[] = PACKAGE_VERSION;
108 static const char emacs_copyright[] = COPYRIGHT;
109 static const char emacs_bugreport[] = PACKAGE_BUGREPORT;
111 /* Empty lisp strings. To avoid having to build any others. */
112 Lisp_Object empty_unibyte_string, empty_multibyte_string;
114 #ifdef WINDOWSNT
115 /* Cache for externally loaded libraries. */
116 Lisp_Object Vlibrary_cache;
117 #endif
119 /* Set after Emacs has started up the first time.
120 Prevents reinitialization of the Lisp world and keymaps
121 on subsequent starts. */
122 bool initialized;
124 /* Set to true if this instance of Emacs might dump. */
125 bool might_dump;
127 #ifdef DARWIN_OS
128 extern void unexec_init_emacs_zone (void);
129 #endif
131 #ifdef DOUG_LEA_MALLOC
132 /* Preserves a pointer to the memory allocated that copies that
133 static data inside glibc's malloc. */
134 static void *malloc_state_ptr;
135 /* From glibc, a routine that returns a copy of the malloc internal state. */
136 extern void *malloc_get_state (void);
137 /* From glibc, a routine that overwrites the malloc internal state. */
138 extern int malloc_set_state (void *);
139 /* True if the MALLOC_CHECK_ environment variable was set while
140 dumping. Used to work around a bug in glibc's malloc. */
141 static bool malloc_using_checking;
142 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
143 extern void malloc_enable_thread (void);
144 #endif
146 /* If true, Emacs should not attempt to use a window-specific code,
147 but instead should use the virtual terminal under which it was started. */
148 bool inhibit_window_system;
150 /* If true, a filter or a sentinel is running. Tested to save the match
151 data on the first attempt to change it inside asynchronous code. */
152 bool running_asynch_code;
154 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
155 /* If true, -d was specified, meaning we're using some window system. */
156 bool display_arg;
157 #endif
159 /* An address near the bottom of the stack.
160 Tells GC how to save a copy of the stack. */
161 char *stack_bottom;
163 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
164 /* The address where the heap starts (from the first sbrk (0) call). */
165 static void *my_heap_start;
166 #endif
168 #ifdef GNU_LINUX
169 /* The gap between BSS end and heap start as far as we can tell. */
170 static uprintmax_t heap_bss_diff;
171 #endif
173 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
174 not a simple fork.
176 On Cocoa, CoreFoundation lib fails in forked process:
177 http://developer.apple.com/ReleaseNotes/
178 CoreFoundation/CoreFoundation.html)
180 On Windows, a Cygwin fork child cannot access the USER subsystem.
182 We mark being in the exec'd process by a daemon name argument of
183 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
184 NAME is the original daemon name, if any. */
185 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
186 # define DAEMON_MUST_EXEC
187 #endif
189 /* True means running Emacs without interactive terminal. */
190 bool noninteractive;
192 /* True means remove site-lisp directories from load-path. */
193 bool no_site_lisp;
195 /* Name for the server started by the daemon.*/
196 static char *daemon_name;
198 #ifndef WINDOWSNT
199 /* Pipe used to send exit notification to the daemon parent at
200 startup. */
201 int daemon_pipe[2];
202 #else
203 HANDLE w32_daemon_event;
204 #endif
206 /* Save argv and argc. */
207 char **initial_argv;
208 int initial_argc;
210 static void sort_args (int argc, char **argv);
211 static void syms_of_emacs (void);
213 /* C99 needs each string to be at most 4095 characters, and the usage
214 strings below are split to not overflow this limit. */
215 static char const *const usage_message[] =
216 { "\
218 Run Emacs, the extensible, customizable, self-documenting real-time\n\
219 display editor. The recommended way to start Emacs for normal editing\n\
220 is with no options at all.\n\
222 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
223 read the main documentation for these command-line arguments.\n\
225 Initialization options:\n\
229 --batch do not do interactive display; implies -q\n\
230 --chdir DIR change to directory DIR\n\
231 --daemon start a server in the background\n\
232 --debug-init enable Emacs Lisp debugger for init file\n\
233 --display, -d DISPLAY use X server DISPLAY\n\
236 --no-desktop do not load a saved desktop\n\
237 --no-init-file, -q load neither ~/.emacs nor default.el\n\
238 --no-loadup, -nl do not load loadup.el into bare Emacs\n\
239 --no-site-file do not load site-start.el\n\
240 --no-x-resources do not load X resources\n\
241 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
242 --no-splash do not display a splash screen on startup\n\
243 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
246 --quick, -Q equivalent to:\n\
247 -q --no-site-file --no-site-lisp --no-splash\n\
248 --no-x-resources\n\
249 --script FILE run FILE as an Emacs Lisp script\n\
250 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
251 --user, -u USER load ~USER/.emacs instead of your own\n\
255 Action options:\n\
257 FILE visit FILE using find-file\n\
258 +LINE go to line LINE in next FILE\n\
259 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
260 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
261 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
262 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
265 --file FILE visit FILE using find-file\n\
266 --find-file FILE visit FILE using find-file\n\
267 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
268 --insert FILE insert contents of FILE into current buffer\n\
269 --kill exit without asking for confirmation\n\
270 --load, -l FILE load Emacs Lisp FILE using the load function\n\
271 --visit FILE visit FILE using find-file\n\
275 Display options:\n\
277 --background-color, -bg COLOR window background color\n\
278 --basic-display, -D disable many display features;\n\
279 used for debugging Emacs\n\
280 --border-color, -bd COLOR main border color\n\
281 --border-width, -bw WIDTH width of main border\n\
284 --color, --color=MODE override color mode for character terminals;\n\
285 MODE defaults to `auto', and\n\
286 can also be `never', `always',\n\
287 or a mode name like `ansi8'\n\
288 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
289 --font, -fn FONT default font; must be fixed-width\n\
290 --foreground-color, -fg COLOR window foreground color\n\
293 --fullheight, -fh make the first frame high as the screen\n\
294 --fullscreen, -fs make the first frame fullscreen\n\
295 --fullwidth, -fw make the first frame wide as the screen\n\
296 --maximized, -mm make the first frame maximized\n\
297 --geometry, -g GEOMETRY window geometry\n\
300 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
301 --iconic start Emacs in iconified state\n\
302 --internal-border, -ib WIDTH width between text and main border\n\
303 --line-spacing, -lsp PIXELS additional space to put between lines\n\
304 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
305 --name NAME title for initial Emacs frame\n\
308 --no-blinking-cursor, -nbc disable blinking cursor\n\
309 --reverse-video, -r, -rv switch foreground and background\n\
310 --title, -T TITLE title for initial Emacs frame\n\
311 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
312 --xrm XRESOURCES set additional X resources\n\
313 --parent-id XID set parent window\n\
314 --help display this help and exit\n\
315 --version output version information and exit\n\
319 You can generally also specify long option names with a single -; for\n\
320 example, -batch as well as --batch. You can use any unambiguous\n\
321 abbreviation for a --option.\n\
323 Various environment variables and window system resources also affect\n\
324 the operation of Emacs. See the main documentation.\n\
326 Report bugs to " PACKAGE_BUGREPORT ". First, please see the Bugs\n\
327 section of the Emacs manual or the file BUGS.\n"
331 /* True if handling a fatal error already. */
332 bool fatal_error_in_progress;
334 #ifdef HAVE_NS
335 /* NS autrelease pool, for memory management. */
336 static void *ns_pool;
337 #endif
339 #if !HAVE_SETLOCALE
340 static char *
341 setlocale (int cat, char const *locale)
343 return 0;
345 #endif
348 /* Report a fatal error due to signal SIG, output a backtrace of at
349 most BACKTRACE_LIMIT lines, and exit. */
350 _Noreturn void
351 terminate_due_to_signal (int sig, int backtrace_limit)
353 signal (sig, SIG_DFL);
355 /* If fatal error occurs in code below, avoid infinite recursion. */
356 if (! fatal_error_in_progress)
358 fatal_error_in_progress = 1;
360 totally_unblock_input ();
361 if (sig == SIGTERM || sig == SIGHUP || sig == SIGINT)
362 Fkill_emacs (make_number (sig));
364 shut_down_emacs (sig, Qnil);
365 emacs_backtrace (backtrace_limit);
368 /* Signal the same code; this time it will really be fatal.
369 Since we're in a signal handler, the signal is blocked, so we
370 have to unblock it if we want to really receive it. */
371 #ifndef MSDOS
373 sigset_t unblocked;
374 sigemptyset (&unblocked);
375 sigaddset (&unblocked, sig);
376 pthread_sigmask (SIG_UNBLOCK, &unblocked, 0);
378 #endif
380 emacs_raise (sig);
382 /* This shouldn't be executed, but it prevents a warning. */
383 exit (1);
386 /* Code for dealing with Lisp access to the Unix command line. */
388 static void
389 init_cmdargs (int argc, char **argv, int skip_args, char *original_pwd)
391 int i;
392 Lisp_Object name, dir, handler;
393 ptrdiff_t count = SPECPDL_INDEX ();
394 Lisp_Object raw_name;
395 AUTO_STRING (slash_colon, "/:");
397 initial_argv = argv;
398 initial_argc = argc;
400 #ifdef WINDOWSNT
401 /* Must use argv[0] converted to UTF-8, as it begets many standard
402 file and directory names. */
404 char argv0[MAX_UTF8_PATH];
406 if (filename_from_ansi (argv[0], argv0) == 0)
407 raw_name = build_unibyte_string (argv0);
408 else
409 raw_name = build_unibyte_string (argv[0]);
411 #else
412 raw_name = build_unibyte_string (argv[0]);
413 #endif
415 /* Add /: to the front of the name
416 if it would otherwise be treated as magic. */
417 handler = Ffind_file_name_handler (raw_name, Qt);
418 if (! NILP (handler))
419 raw_name = concat2 (slash_colon, raw_name);
421 Vinvocation_name = Ffile_name_nondirectory (raw_name);
422 Vinvocation_directory = Ffile_name_directory (raw_name);
424 /* If we got no directory in argv[0], search PATH to find where
425 Emacs actually came from. */
426 if (NILP (Vinvocation_directory))
428 Lisp_Object found;
429 int yes = openp (Vexec_path, Vinvocation_name,
430 Vexec_suffixes, &found, make_number (X_OK), false);
431 if (yes == 1)
433 /* Add /: to the front of the name
434 if it would otherwise be treated as magic. */
435 handler = Ffind_file_name_handler (found, Qt);
436 if (! NILP (handler))
437 found = concat2 (slash_colon, found);
438 Vinvocation_directory = Ffile_name_directory (found);
442 if (!NILP (Vinvocation_directory)
443 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
444 /* Emacs was started with relative path, like ./emacs.
445 Make it absolute. */
447 Lisp_Object odir =
448 original_pwd ? build_unibyte_string (original_pwd) : Qnil;
450 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, odir);
453 Vinstallation_directory = Qnil;
455 if (!NILP (Vinvocation_directory))
457 dir = Vinvocation_directory;
458 #ifdef WINDOWSNT
459 /* If we are running from the build directory, set DIR to the
460 src subdirectory of the Emacs tree, like on Posix
461 platforms. */
462 if (SBYTES (dir) > sizeof ("/i386/") - 1
463 && 0 == strcmp (SSDATA (dir) + SBYTES (dir) - sizeof ("/i386/") + 1,
464 "/i386/"))
465 dir = Fexpand_file_name (build_string ("../.."), dir);
466 #else /* !WINDOWSNT */
467 #endif
468 name = Fexpand_file_name (Vinvocation_name, dir);
469 while (1)
471 Lisp_Object tem, lib_src_exists;
472 Lisp_Object etc_exists, info_exists;
474 /* See if dir contains subdirs for use by Emacs.
475 Check for the ones that would exist in a build directory,
476 not including lisp and info. */
477 tem = Fexpand_file_name (build_string ("lib-src"), dir);
478 lib_src_exists = Ffile_exists_p (tem);
480 #ifdef MSDOS
481 /* MSDOS installations frequently remove lib-src, but we still
482 must set installation-directory, or else info won't find
483 its files (it uses the value of installation-directory). */
484 tem = Fexpand_file_name (build_string ("info"), dir);
485 info_exists = Ffile_exists_p (tem);
486 #else
487 info_exists = Qnil;
488 #endif
490 if (!NILP (lib_src_exists) || !NILP (info_exists))
492 tem = Fexpand_file_name (build_string ("etc"), dir);
493 etc_exists = Ffile_exists_p (tem);
494 if (!NILP (etc_exists))
496 Vinstallation_directory
497 = Ffile_name_as_directory (dir);
498 break;
502 /* See if dir's parent contains those subdirs. */
503 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
504 lib_src_exists = Ffile_exists_p (tem);
507 #ifdef MSDOS
508 /* See the MSDOS commentary above. */
509 tem = Fexpand_file_name (build_string ("../info"), dir);
510 info_exists = Ffile_exists_p (tem);
511 #else
512 info_exists = Qnil;
513 #endif
515 if (!NILP (lib_src_exists) || !NILP (info_exists))
517 tem = Fexpand_file_name (build_string ("../etc"), dir);
518 etc_exists = Ffile_exists_p (tem);
519 if (!NILP (etc_exists))
521 tem = Fexpand_file_name (build_string (".."), dir);
522 Vinstallation_directory
523 = Ffile_name_as_directory (tem);
524 break;
528 /* If the Emacs executable is actually a link,
529 next try the dir that the link points into. */
530 tem = Ffile_symlink_p (name);
531 if (!NILP (tem))
533 name = Fexpand_file_name (tem, dir);
534 dir = Ffile_name_directory (name);
536 else
537 break;
541 Vcommand_line_args = Qnil;
543 for (i = argc - 1; i >= 0; i--)
545 if (i == 0 || i > skip_args)
546 /* For the moment, we keep arguments as is in unibyte strings.
547 They are decoded in the function command-line after we know
548 locale-coding-system. */
549 Vcommand_line_args
550 = Fcons (build_unibyte_string (argv[i]), Vcommand_line_args);
553 unbind_to (count, Qnil);
556 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
557 doc: /* Return the program name that was used to run Emacs.
558 Any directory names are omitted. */)
559 (void)
561 return Fcopy_sequence (Vinvocation_name);
564 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
565 0, 0, 0,
566 doc: /* Return the directory name in which the Emacs executable was located. */)
567 (void)
569 return Fcopy_sequence (Vinvocation_directory);
573 /* Test whether the next argument in ARGV matches SSTR or a prefix of
574 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
575 (the argument is supposed to have a value) store in *VALPTR either
576 the next argument or the portion of this one after the equal sign.
577 ARGV is read starting at position *SKIPPTR; this index is advanced
578 by the number of arguments used.
580 Too bad we can't just use getopt for all of this, but we don't have
581 enough information to do it right. */
583 static bool
584 argmatch (char **argv, int argc, const char *sstr, const char *lstr,
585 int minlen, char **valptr, int *skipptr)
587 char *p = NULL;
588 ptrdiff_t arglen;
589 char *arg;
591 /* Don't access argv[argc]; give up in advance. */
592 if (argc <= *skipptr + 1)
593 return 0;
595 arg = argv[*skipptr+1];
596 if (arg == NULL)
597 return 0;
598 if (strcmp (arg, sstr) == 0)
600 if (valptr != NULL)
602 *valptr = argv[*skipptr+2];
603 *skipptr += 2;
605 else
606 *skipptr += 1;
607 return 1;
609 arglen = (valptr != NULL && (p = strchr (arg, '=')) != NULL
610 ? p - arg : strlen (arg));
611 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
612 return 0;
613 else if (valptr == NULL)
615 *skipptr += 1;
616 return 1;
618 else if (p != NULL)
620 *valptr = p+1;
621 *skipptr += 1;
622 return 1;
624 else if (argv[*skipptr+2] != NULL)
626 *valptr = argv[*skipptr+2];
627 *skipptr += 2;
628 return 1;
630 else
632 return 0;
636 #ifdef DOUG_LEA_MALLOC
638 /* malloc can be invoked even before main (e.g. by the dynamic
639 linker), so the dumped malloc state must be restored as early as
640 possible using this special hook. */
642 static void
643 malloc_initialize_hook (void)
645 if (initialized)
647 if (!malloc_using_checking)
648 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
649 ignored if the heap to be restored was constructed without
650 malloc checking. Can't use unsetenv, since that calls malloc. */
652 char **p;
654 for (p = environ; p && *p; p++)
655 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
658 *p = p[1];
659 while (*++p);
660 break;
664 malloc_set_state (malloc_state_ptr);
665 #ifndef XMALLOC_OVERRUN_CHECK
666 free (malloc_state_ptr);
667 #endif
669 else
671 if (my_heap_start == 0)
672 my_heap_start = sbrk (0);
673 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
677 void (*__malloc_initialize_hook) (void) EXTERNALLY_VISIBLE = malloc_initialize_hook;
679 #endif /* DOUG_LEA_MALLOC */
681 /* Close standard output and standard error, reporting any write
682 errors as best we can. This is intended for use with atexit. */
683 static void
684 close_output_streams (void)
686 if (close_stream (stdout) != 0)
688 emacs_perror ("Write error to standard output");
689 _exit (EXIT_FAILURE);
692 if (close_stream (stderr) != 0)
693 _exit (EXIT_FAILURE);
696 /* ARGSUSED */
698 main (int argc, char **argv)
700 #if GC_MARK_STACK
701 Lisp_Object dummy;
702 #endif
703 char stack_bottom_variable;
704 bool do_initial_setlocale;
705 bool dumping;
706 int skip_args = 0;
707 #ifdef HAVE_SETRLIMIT
708 struct rlimit rlim;
709 #endif
710 bool no_loadup = 0;
711 char *junk = 0;
712 char *dname_arg = 0;
713 #ifdef DAEMON_MUST_EXEC
714 char dname_arg2[80];
715 #endif
716 char *ch_to_dir = 0;
718 /* If we use --chdir, this records the original directory. */
719 char *original_pwd = 0;
721 #if GC_MARK_STACK
722 stack_base = &dummy;
723 #endif
725 #ifndef CANNOT_DUMP
726 might_dump = !initialized;
727 #endif
729 #ifdef GNU_LINUX
730 if (!initialized)
732 if (my_heap_start == 0)
733 my_heap_start = sbrk (0);
735 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
737 #endif
739 #if defined WINDOWSNT || defined HAVE_NTGUI
740 /* Set global variables used to detect Windows version. Do this as
741 early as possible. (unexw32.c calls this function as well, but
742 the additional call here is harmless.) */
743 cache_system_info ();
744 #ifdef WINDOWSNT
745 /* On Windows 9X, we have to load UNICOWS.DLL as early as possible,
746 to have non-stub implementations of APIs we need to convert file
747 names between UTF-8 and the system's ANSI codepage. */
748 maybe_load_unicows_dll ();
749 #endif
750 #endif
752 #ifdef RUN_TIME_REMAP
753 if (initialized)
754 run_time_remap (argv[0]);
755 #endif
757 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
758 #ifdef DARWIN_OS
759 if (!initialized)
760 unexec_init_emacs_zone ();
761 #endif
763 atexit (close_output_streams);
765 sort_args (argc, argv);
766 argc = 0;
767 while (argv[argc]) argc++;
769 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
771 const char *version, *copyright;
772 if (initialized)
774 Lisp_Object tem, tem2;
775 tem = Fsymbol_value (intern_c_string ("emacs-version"));
776 tem2 = Fsymbol_value (intern_c_string ("emacs-copyright"));
777 if (!STRINGP (tem))
779 fprintf (stderr, "Invalid value of `emacs-version'\n");
780 exit (1);
782 if (!STRINGP (tem2))
784 fprintf (stderr, "Invalid value of `emacs-copyright'\n");
785 exit (1);
787 else
789 version = SSDATA (tem);
790 copyright = SSDATA (tem2);
793 else
795 version = emacs_version;
796 copyright = emacs_copyright;
798 printf ("%s %s\n", PACKAGE_NAME, version);
799 printf ("%s\n", copyright);
800 printf ("%s comes with ABSOLUTELY NO WARRANTY.\n", PACKAGE_NAME);
801 printf ("You may redistribute copies of %s\n", PACKAGE_NAME);
802 printf ("under the terms of the GNU General Public License.\n");
803 printf ("For more information about these matters, ");
804 printf ("see the file named COPYING.\n");
805 exit (0);
808 if (argmatch (argv, argc, "-chdir", "--chdir", 4, &ch_to_dir, &skip_args))
810 #ifdef WINDOWSNT
811 /* argv[] array is kept in its original ANSI codepage encoding,
812 we need to convert to UTF-8, for chdir to work. */
813 char newdir[MAX_UTF8_PATH];
815 filename_from_ansi (ch_to_dir, newdir);
816 ch_to_dir = newdir;
817 #endif
818 original_pwd = get_current_dir_name ();
819 if (chdir (ch_to_dir) != 0)
821 fprintf (stderr, "%s: Can't chdir to %s: %s\n",
822 argv[0], ch_to_dir, strerror (errno));
823 exit (1);
827 dumping = !initialized && (strcmp (argv[argc - 1], "dump") == 0
828 || strcmp (argv[argc - 1], "bootstrap") == 0);
830 #ifdef HAVE_PERSONALITY_LINUX32
831 if (dumping && ! getenv ("EMACS_HEAP_EXEC"))
833 /* Set this so we only do this once. */
834 xputenv ("EMACS_HEAP_EXEC=true");
836 /* A flag to turn off address randomization which is introduced
837 in linux kernel shipped with fedora core 4 */
838 #define ADD_NO_RANDOMIZE 0x0040000
839 personality (PER_LINUX32 | ADD_NO_RANDOMIZE);
840 #undef ADD_NO_RANDOMIZE
842 execvp (argv[0], argv);
844 /* If the exec fails, try to dump anyway. */
845 emacs_perror (argv[0]);
847 #endif /* HAVE_PERSONALITY_LINUX32 */
849 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
850 /* Extend the stack space available.
851 Don't do that if dumping, since some systems (e.g. DJGPP)
852 might define a smaller stack limit at that time. */
853 if (1
854 #ifndef CANNOT_DUMP
855 && (!noninteractive || initialized)
856 #endif
857 && !getrlimit (RLIMIT_STACK, &rlim))
859 long newlim;
860 /* Approximate the amount regex.c needs per unit of re_max_failures. */
861 int ratio = 20 * sizeof (char *);
862 /* Then add 33% to cover the size of the smaller stacks that regex.c
863 successively allocates and discards, on its way to the maximum. */
864 ratio += ratio / 3;
865 /* Add in some extra to cover
866 what we're likely to use for other reasons. */
867 newlim = re_max_failures * ratio + 200000;
868 #ifdef __NetBSD__
869 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
870 stack allocation routine for new process that the allocation
871 fails if stack limit is not on page boundary. So, round up the
872 new limit to page boundary. */
873 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize ();
874 #endif
875 if (newlim > rlim.rlim_max)
877 newlim = rlim.rlim_max;
878 /* Don't let regex.c overflow the stack we have. */
879 re_max_failures = (newlim - 200000) / ratio;
881 if (rlim.rlim_cur < newlim)
882 rlim.rlim_cur = newlim;
884 setrlimit (RLIMIT_STACK, &rlim);
886 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
888 /* Record (approximately) where the stack begins. */
889 stack_bottom = &stack_bottom_variable;
891 clearerr (stdin);
893 emacs_backtrace (-1);
895 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
896 /* Arrange to get warning messages as memory fills up. */
897 memory_warnings (0, malloc_warning);
899 /* Call malloc at least once, to run malloc_initialize_hook.
900 Also call realloc and free for consistency. */
901 free (realloc (malloc (4), 4));
903 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
905 #ifdef MSDOS
906 SET_BINARY (fileno (stdin));
907 fflush (stdout);
908 SET_BINARY (fileno (stdout));
909 #endif /* MSDOS */
911 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
912 The build procedure uses this while dumping, to ensure that the
913 dumped Emacs does not have its system locale tables initialized,
914 as that might cause screwups when the dumped Emacs starts up. */
916 char *lc_all = getenv ("LC_ALL");
917 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
920 /* Set locale now, so that initial error messages are localized properly.
921 fixup_locale must wait until later, since it builds strings. */
922 if (do_initial_setlocale)
923 setlocale (LC_ALL, "");
925 inhibit_window_system = 0;
927 /* Handle the -t switch, which specifies filename to use as terminal. */
928 while (1)
930 char *term;
931 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
933 int result;
934 emacs_close (0);
935 emacs_close (1);
936 result = emacs_open (term, O_RDWR, 0);
937 if (result < 0 || fcntl (0, F_DUPFD_CLOEXEC, 1) < 0)
939 char *errstring = strerror (errno);
940 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
941 exit (1);
943 if (! isatty (0))
945 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
946 exit (1);
948 fprintf (stderr, "Using %s\n", term);
949 #ifdef HAVE_WINDOW_SYSTEM
950 inhibit_window_system = 1; /* -t => -nw */
951 #endif
953 else
954 break;
957 /* Command line option --no-windows is deprecated and thus not mentioned
958 in the manual and usage information. */
959 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
960 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
961 inhibit_window_system = 1;
963 /* Handle the -batch switch, which means don't do interactive display. */
964 noninteractive = 0;
965 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
967 noninteractive = 1;
968 Vundo_outer_limit = Qnil;
970 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
972 noninteractive = 1; /* Set batch mode. */
973 /* Convert --script to -scriptload, un-skip it, and sort again
974 so that it will be handled in proper sequence. */
975 /* FIXME broken for --script=FILE - is that supposed to work? */
976 argv[skip_args - 1] = (char *) "-scriptload";
977 skip_args -= 2;
978 sort_args (argc, argv);
981 /* Handle the --help option, which gives a usage message. */
982 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
984 int i;
985 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv[0]);
986 for (i = 0; i < ARRAYELTS (usage_message); i++)
987 fputs (usage_message[i], stdout);
988 exit (0);
991 #ifndef WINDOWSNT
992 /* Make sure IS_DAEMON starts up as false. */
993 daemon_pipe[1] = 0;
994 #else
995 w32_daemon_event = NULL;
996 #endif
998 if (argmatch (argv, argc, "-daemon", "--daemon", 5, NULL, &skip_args)
999 || argmatch (argv, argc, "-daemon", "--daemon", 5, &dname_arg, &skip_args))
1001 #ifndef DOS_NT
1002 pid_t f;
1004 /* Start as a daemon: fork a new child process which will run the
1005 rest of the initialization code, then exit.
1007 Detaching a daemon requires the following steps:
1008 - fork
1009 - setsid
1010 - exit the parent
1011 - close the tty file-descriptors
1013 We only want to do the last 2 steps once the daemon is ready to
1014 serve requests, i.e. after loading .emacs (initialization).
1015 OTOH initialization may start subprocesses (e.g. ispell) and these
1016 should be run from the proper process (the one that will end up
1017 running as daemon) and with the proper "session id" in order for
1018 them to keep working after detaching, so fork and setsid need to be
1019 performed before initialization.
1021 We want to avoid exiting before the server socket is ready, so
1022 use a pipe for synchronization. The parent waits for the child
1023 to close its end of the pipe (using `daemon-initialized')
1024 before exiting. */
1025 if (emacs_pipe (daemon_pipe) != 0)
1027 fprintf (stderr, "Cannot pipe!\n");
1028 exit (1);
1031 #ifndef DAEMON_MUST_EXEC
1032 #ifdef USE_GTK
1033 fprintf (stderr, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1034 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1035 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1036 #endif /* USE_GTK */
1037 f = fork ();
1038 #else /* DAEMON_MUST_EXEC */
1039 if (!dname_arg || !strchr (dname_arg, '\n'))
1040 f = fork (); /* in orig */
1041 else
1042 f = 0; /* in exec'd */
1043 #endif /* !DAEMON_MUST_EXEC */
1044 if (f > 0)
1046 int retval;
1047 char buf[1];
1049 /* Close unused writing end of the pipe. */
1050 emacs_close (daemon_pipe[1]);
1052 /* Just wait for the child to close its end of the pipe. */
1055 retval = read (daemon_pipe[0], &buf, 1);
1057 while (retval == -1 && errno == EINTR);
1059 if (retval < 0)
1061 fprintf (stderr, "Error reading status from child\n");
1062 exit (1);
1064 else if (retval == 0)
1066 fprintf (stderr, "Error: server did not start correctly\n");
1067 exit (1);
1070 emacs_close (daemon_pipe[0]);
1071 exit (0);
1073 if (f < 0)
1075 emacs_perror ("fork");
1076 exit (EXIT_CANCELED);
1079 #ifdef DAEMON_MUST_EXEC
1081 /* In orig process, forked as child, OR in exec'd. */
1082 if (!dname_arg || !strchr (dname_arg, '\n'))
1083 { /* In orig, child: now exec w/special daemon name. */
1084 char fdStr[80];
1085 int fdStrlen =
1086 snprintf (fdStr, sizeof fdStr,
1087 "--daemon=\n%d,%d\n%s", daemon_pipe[0],
1088 daemon_pipe[1], dname_arg ? dname_arg : "");
1090 if (! (0 <= fdStrlen && fdStrlen < sizeof fdStr))
1092 fprintf (stderr, "daemon: child name too long\n");
1093 exit (EXIT_CANNOT_INVOKE);
1096 argv[skip_args] = fdStr;
1098 fcntl (daemon_pipe[0], F_SETFD, 0);
1099 fcntl (daemon_pipe[1], F_SETFD, 0);
1100 execvp (argv[0], argv);
1101 emacs_perror (argv[0]);
1102 exit (errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE);
1105 /* In exec'd: parse special dname into pipe and name info. */
1106 if (!dname_arg || !strchr (dname_arg, '\n')
1107 || strlen (dname_arg) < 1 || strlen (dname_arg) > 70)
1109 fprintf (stderr, "emacs daemon: daemon name absent or too long\n");
1110 exit (EXIT_CANNOT_INVOKE);
1112 dname_arg2[0] = '\0';
1113 sscanf (dname_arg, "\n%d,%d\n%s", &(daemon_pipe[0]), &(daemon_pipe[1]),
1114 dname_arg2);
1115 dname_arg = *dname_arg2 ? dname_arg2 : NULL;
1116 fcntl (daemon_pipe[1], F_SETFD, FD_CLOEXEC);
1118 #endif /* DAEMON_MUST_EXEC */
1120 /* Close unused reading end of the pipe. */
1121 emacs_close (daemon_pipe[0]);
1123 setsid ();
1124 #elif defined(WINDOWSNT)
1125 /* Indicate that we want daemon mode. */
1126 w32_daemon_event = CreateEvent (NULL, TRUE, FALSE, W32_DAEMON_EVENT);
1127 if (w32_daemon_event == NULL)
1129 fprintf (stderr, "Couldn't create MS-Windows event for daemon: %s\n",
1130 w32_strerror (0));
1131 exit (1);
1133 #else /* MSDOS */
1134 fprintf (stderr, "This platform does not support the -daemon flag.\n");
1135 exit (1);
1136 #endif /* MSDOS */
1137 if (dname_arg)
1138 daemon_name = xstrdup (dname_arg);
1141 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC \
1142 && !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC
1143 # ifndef CANNOT_DUMP
1144 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1145 that causes an infinite recursive loop with FreeBSD. See
1146 Bug#14569. The part of this bug involving Cygwin is no longer
1147 relevant, now that Cygwin defines HYBRID_MALLOC. */
1148 if (!noninteractive || initialized)
1149 # endif
1150 malloc_enable_thread ();
1151 #endif
1153 init_signals (dumping);
1155 noninteractive1 = noninteractive;
1157 /* Perform basic initializations (not merely interning symbols). */
1159 if (!initialized)
1161 init_alloc_once ();
1162 init_obarray ();
1163 init_eval_once ();
1164 init_charset_once ();
1165 init_coding_once ();
1166 init_syntax_once (); /* Create standard syntax table. */
1167 init_category_once (); /* Create standard category table. */
1168 init_casetab_once (); /* Must be done before init_buffer_once. */
1169 init_buffer_once (); /* Create buffer table and some buffers. */
1170 init_minibuf_once (); /* Create list of minibuffers. */
1171 /* Must precede init_window_once. */
1173 /* Call syms_of_xfaces before init_window_once because that
1174 function creates Vterminal_frame. Termcap frames now use
1175 faces, and the face implementation uses some symbols as
1176 face names. */
1177 syms_of_xfaces ();
1178 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1179 be better to arrange things not to have this dependency. */
1180 syms_of_keymap ();
1181 /* Call syms_of_keyboard before init_window_once because
1182 keyboard sets up symbols that include some face names that
1183 the X support will want to use. This can happen when
1184 CANNOT_DUMP is defined. */
1185 syms_of_keyboard ();
1187 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1188 syms_of_data ();
1189 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1190 syms_of_fileio ();
1191 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1192 syms_of_alloc ();
1193 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1194 init_print_once ();
1195 /* Before syms_of_coding because it initializes Qcharsetp. */
1196 syms_of_charset ();
1197 /* Before init_window_once, because it sets up the
1198 Vcoding_system_hash_table. */
1199 syms_of_coding (); /* This should be after syms_of_fileio. */
1201 init_window_once (); /* Init the window system. */
1202 #ifdef HAVE_WINDOW_SYSTEM
1203 init_fringe_once (); /* Swap bitmaps if necessary. */
1204 #endif /* HAVE_WINDOW_SYSTEM */
1207 init_alloc ();
1209 if (do_initial_setlocale)
1211 fixup_locale ();
1212 Vsystem_messages_locale = Vprevious_system_messages_locale;
1213 Vsystem_time_locale = Vprevious_system_time_locale;
1216 init_eval ();
1217 init_atimer ();
1218 running_asynch_code = 0;
1219 init_random ();
1221 no_loadup
1222 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1224 no_site_lisp
1225 = argmatch (argv, argc, "-nsl", "--no-site-lisp", 11, NULL, &skip_args);
1227 #ifdef HAVE_NS
1228 ns_pool = ns_alloc_autorelease_pool ();
1229 #ifdef NS_IMPL_GNUSTEP
1230 /* GNUstep stupidly resets our locale settings after we made them. */
1231 fixup_locale ();
1232 #endif
1234 if (!noninteractive)
1236 #ifdef NS_IMPL_COCOA
1237 /* Started from GUI? */
1238 /* FIXME: Do the right thing if getenv returns NULL, or if
1239 chdir fails. */
1240 if (! inhibit_window_system && ! isatty (0) && ! ch_to_dir)
1241 chdir (getenv ("HOME"));
1242 if (skip_args < argc)
1244 if (!strncmp (argv[skip_args], "-psn", 4))
1246 skip_args += 1;
1247 if (! ch_to_dir) chdir (getenv ("HOME"));
1249 else if (skip_args+1 < argc && !strncmp (argv[skip_args+1], "-psn", 4))
1251 skip_args += 2;
1252 if (! ch_to_dir) chdir (getenv ("HOME"));
1255 #endif /* COCOA */
1257 #endif /* HAVE_NS */
1259 #ifdef HAVE_X_WINDOWS
1260 /* Stupid kludge to catch command-line display spec. We can't
1261 handle this argument entirely in window system dependent code
1262 because we don't even know which window system dependent code
1263 to run until we've recognized this argument. */
1265 char *displayname = 0;
1266 int count_before = skip_args;
1268 /* Skip any number of -d options, but only use the last one. */
1269 while (1)
1271 int count_before_this = skip_args;
1273 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1274 display_arg = 1;
1275 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1276 display_arg = 1;
1277 else
1278 break;
1280 count_before = count_before_this;
1283 /* If we have the form --display=NAME,
1284 convert it into -d name.
1285 This requires inserting a new element into argv. */
1286 if (displayname && count_before < skip_args)
1288 if (skip_args == count_before + 1)
1290 memmove (argv + count_before + 3, argv + count_before + 2,
1291 (argc - (count_before + 2)) * sizeof *argv);
1292 argv[count_before + 2] = displayname;
1293 argc++;
1295 argv[count_before + 1] = (char *) "-d";
1298 if (! no_site_lisp)
1300 if (argmatch (argv, argc, "-Q", "--quick", 3, NULL, &skip_args)
1301 || argmatch (argv, argc, "-quick", 0, 2, NULL, &skip_args))
1302 no_site_lisp = 1;
1305 /* Don't actually discard this arg. */
1306 skip_args = count_before;
1308 #else /* !HAVE_X_WINDOWS */
1309 if (! no_site_lisp)
1311 int count_before = skip_args;
1313 if (argmatch (argv, argc, "-Q", "--quick", 3, NULL, &skip_args)
1314 || argmatch (argv, argc, "-quick", 0, 2, NULL, &skip_args))
1315 no_site_lisp = 1;
1317 skip_args = count_before;
1319 #endif
1321 /* argmatch must not be used after here,
1322 except when building temacs
1323 because the -d argument has not been skipped in skip_args. */
1325 #ifdef MSDOS
1326 /* Call early 'cause init_environment needs it. */
1327 init_dosfns ();
1328 /* Set defaults for several environment variables. */
1329 if (initialized)
1330 init_environment (argc, argv, skip_args);
1331 else
1332 tzset ();
1333 #endif /* MSDOS */
1335 #ifdef HAVE_GFILENOTIFY
1336 globals_of_gfilenotify ();
1337 #endif
1339 #ifdef WINDOWSNT
1340 globals_of_w32 ();
1341 #ifdef HAVE_W32NOTIFY
1342 globals_of_w32notify ();
1343 #endif
1344 /* Initialize environment from registry settings. */
1345 init_environment (argv);
1346 init_ntproc (dumping); /* must precede init_editfns. */
1347 #endif
1349 /* Initialize and GC-protect Vinitial_environment and
1350 Vprocess_environment before set_initial_environment fills them
1351 in. */
1352 if (!initialized)
1353 syms_of_callproc ();
1354 /* egetenv is a pretty low-level facility, which may get called in
1355 many circumstances; it seems flimsy to put off initializing it
1356 until calling init_callproc. Do not do it when dumping. */
1357 if (! dumping)
1358 set_initial_environment ();
1360 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1361 if this is not done. Do it after set_global_environment so that we
1362 don't pollute Vglobal_environment. */
1363 /* Setting LANG here will defeat the startup locale processing... */
1364 #ifdef AIX
1365 xputenv ("LANG=C");
1366 #endif
1368 /* Init buffer storage and default directory of main buffer. */
1369 init_buffer (initialized);
1371 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1373 /* Must precede init_lread. */
1374 init_cmdargs (argc, argv, skip_args, original_pwd);
1376 if (initialized)
1378 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1379 Lisp_Object old_log_max;
1380 old_log_max = Vmessage_log_max;
1381 XSETFASTINT (Vmessage_log_max, 0);
1382 message_dolog ("", 0, 1, 0);
1383 Vmessage_log_max = old_log_max;
1386 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1387 init_fileio ();
1388 init_lread ();
1389 #ifdef WINDOWSNT
1390 /* Check to see if Emacs has been installed correctly. */
1391 check_windows_init_file ();
1392 #endif
1394 /* Intern the names of all standard functions and variables;
1395 define standard keys. */
1397 if (!initialized)
1399 /* The basic levels of Lisp must come first. Note that
1400 syms_of_data and some others have already been called. */
1401 syms_of_chartab ();
1402 syms_of_lread ();
1403 syms_of_print ();
1404 syms_of_eval ();
1405 syms_of_floatfns ();
1407 syms_of_buffer ();
1408 syms_of_bytecode ();
1409 syms_of_callint ();
1410 syms_of_casefiddle ();
1411 syms_of_casetab ();
1412 syms_of_category ();
1413 syms_of_ccl ();
1414 syms_of_character ();
1415 syms_of_cmds ();
1416 syms_of_dired ();
1417 syms_of_display ();
1418 syms_of_doc ();
1419 syms_of_editfns ();
1420 syms_of_emacs ();
1421 syms_of_filelock ();
1422 syms_of_indent ();
1423 syms_of_insdel ();
1424 /* syms_of_keymap (); */
1425 syms_of_macros ();
1426 syms_of_marker ();
1427 syms_of_minibuf ();
1428 syms_of_process ();
1429 syms_of_search ();
1430 syms_of_frame ();
1431 syms_of_syntax ();
1432 syms_of_terminal ();
1433 syms_of_term ();
1434 syms_of_undo ();
1435 #ifdef HAVE_SOUND
1436 syms_of_sound ();
1437 #endif
1438 syms_of_textprop ();
1439 syms_of_composite ();
1440 #ifdef WINDOWSNT
1441 syms_of_ntproc ();
1442 #endif /* WINDOWSNT */
1443 #if defined CYGWIN
1444 syms_of_cygw32 ();
1445 #endif
1446 syms_of_window ();
1447 syms_of_xdisp ();
1448 syms_of_font ();
1449 #ifdef HAVE_WINDOW_SYSTEM
1450 syms_of_fringe ();
1451 syms_of_image ();
1452 #endif /* HAVE_WINDOW_SYSTEM */
1453 #ifdef HAVE_X_WINDOWS
1454 syms_of_xterm ();
1455 syms_of_xfns ();
1456 syms_of_xmenu ();
1457 syms_of_fontset ();
1458 syms_of_xsettings ();
1459 #ifdef HAVE_X_SM
1460 syms_of_xsmfns ();
1461 #endif
1462 #ifdef HAVE_X11
1463 syms_of_xselect ();
1464 #endif
1465 #endif /* HAVE_X_WINDOWS */
1467 #ifdef HAVE_LIBXML2
1468 syms_of_xml ();
1469 #endif
1471 #ifdef HAVE_ZLIB
1472 syms_of_decompress ();
1473 #endif
1475 syms_of_menu ();
1477 #ifdef HAVE_NTGUI
1478 syms_of_w32term ();
1479 syms_of_w32fns ();
1480 syms_of_w32menu ();
1481 syms_of_fontset ();
1482 #endif /* HAVE_NTGUI */
1484 #if defined WINDOWSNT || defined HAVE_NTGUI
1485 syms_of_w32select ();
1486 #endif
1488 #ifdef MSDOS
1489 syms_of_xmenu ();
1490 syms_of_dosfns ();
1491 syms_of_msdos ();
1492 syms_of_win16select ();
1493 #endif /* MSDOS */
1495 #ifdef HAVE_NS
1496 syms_of_nsterm ();
1497 syms_of_nsfns ();
1498 syms_of_nsmenu ();
1499 syms_of_nsselect ();
1500 syms_of_fontset ();
1501 #endif /* HAVE_NS */
1503 syms_of_gnutls ();
1505 #ifdef HAVE_GFILENOTIFY
1506 syms_of_gfilenotify ();
1507 #endif /* HAVE_GFILENOTIFY */
1509 #ifdef HAVE_INOTIFY
1510 syms_of_inotify ();
1511 #endif /* HAVE_INOTIFY */
1513 #ifdef HAVE_DBUS
1514 syms_of_dbusbind ();
1515 #endif /* HAVE_DBUS */
1517 #ifdef WINDOWSNT
1518 syms_of_ntterm ();
1519 #ifdef HAVE_W32NOTIFY
1520 syms_of_w32notify ();
1521 #endif /* HAVE_W32NOTIFY */
1522 #endif /* WINDOWSNT */
1524 syms_of_profiler ();
1526 keys_of_casefiddle ();
1527 keys_of_cmds ();
1528 keys_of_buffer ();
1529 keys_of_keyboard ();
1530 keys_of_keymap ();
1531 keys_of_window ();
1533 else
1535 /* Initialization that must be done even if the global variable
1536 initialized is non zero. */
1537 #ifdef HAVE_NTGUI
1538 globals_of_w32font ();
1539 globals_of_w32fns ();
1540 globals_of_w32menu ();
1541 #endif /* HAVE_NTGUI */
1543 #if defined WINDOWSNT || defined HAVE_NTGUI
1544 globals_of_w32select ();
1545 #endif
1548 init_charset ();
1550 /* This calls putenv and so must precede init_process_emacs. Also,
1551 it sets Voperating_system_release, which init_process_emacs uses. */
1552 init_editfns ();
1554 /* These two call putenv. */
1555 #ifdef HAVE_DBUS
1556 init_dbusbind ();
1557 #endif
1558 #ifdef USE_GTK
1559 init_xterm ();
1560 #endif
1562 /* This can create a thread that may call getenv, so it must follow
1563 all calls to putenv and setenv. Also, this sets up
1564 add_keyboard_wait_descriptor, which init_display uses. */
1565 init_process_emacs ();
1567 init_keyboard (); /* This too must precede init_sys_modes. */
1568 if (!noninteractive)
1569 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1570 #if HAVE_W32NOTIFY
1571 else
1572 init_crit (); /* w32notify.c needs this in batch mode. */
1573 #endif /* HAVE_W32NOTIFY */
1574 init_xdisp ();
1575 #ifdef HAVE_WINDOW_SYSTEM
1576 init_fringe ();
1577 #endif /* HAVE_WINDOW_SYSTEM */
1578 init_macros ();
1579 init_window ();
1580 init_font ();
1582 if (!initialized)
1584 char *file;
1585 /* Handle -l loadup, args passed by Makefile. */
1586 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1588 #ifdef WINDOWSNT
1589 char file_utf8[MAX_UTF8_PATH];
1591 if (filename_from_ansi (file, file_utf8) == 0)
1592 file = file_utf8;
1593 #endif
1594 Vtop_level = list2 (Qload, build_unibyte_string (file));
1596 /* Unless next switch is -nl, load "loadup.el" first thing. */
1597 if (! no_loadup)
1598 Vtop_level = list2 (Qload, build_string ("loadup.el"));
1601 /* Set up for profiling. This is known to work on FreeBSD,
1602 GNU/Linux and MinGW. It might work on some other systems too.
1603 Give it a try and tell us if it works on your system. To compile
1604 for profiling, use the configure option --enable-profiling. */
1605 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1606 #ifdef PROFILING
1607 if (initialized)
1609 #ifdef __MINGW32__
1610 extern unsigned char etext asm ("etext");
1611 #else
1612 extern char etext;
1613 #endif
1615 atexit (_mcleanup);
1616 monstartup ((uintptr_t) __executable_start, (uintptr_t) &etext);
1618 else
1619 moncontrol (0);
1620 #endif
1621 #endif
1623 initialized = 1;
1625 /* Enter editor command loop. This never returns. */
1626 Frecursive_edit ();
1627 /* NOTREACHED */
1628 return 0;
1631 /* Sort the args so we can find the most important ones
1632 at the beginning of argv. */
1634 /* First, here's a table of all the standard options. */
1636 struct standard_args
1638 const char *name;
1639 const char *longname;
1640 int priority;
1641 int nargs;
1644 static const struct standard_args standard_args[] =
1646 { "-version", "--version", 150, 0 },
1647 { "-chdir", "--chdir", 130, 1 },
1648 { "-t", "--terminal", 120, 1 },
1649 { "-nw", "--no-window-system", 110, 0 },
1650 { "-nw", "--no-windows", 110, 0 },
1651 { "-batch", "--batch", 100, 0 },
1652 { "-script", "--script", 100, 1 },
1653 { "-daemon", "--daemon", 99, 0 },
1654 { "-help", "--help", 90, 0 },
1655 { "-nl", "--no-loadup", 70, 0 },
1656 { "-nsl", "--no-site-lisp", 65, 0 },
1657 /* -d must come last before the options handled in startup.el. */
1658 { "-d", "--display", 60, 1 },
1659 { "-display", 0, 60, 1 },
1660 /* Now for the options handled in `command-line' (startup.el). */
1661 /* (Note that to imply -nsl, -Q is partially handled here.) */
1662 { "-Q", "--quick", 55, 0 },
1663 { "-quick", 0, 55, 0 },
1664 { "-q", "--no-init-file", 50, 0 },
1665 { "-no-init-file", 0, 50, 0 },
1666 { "-no-x-resources", "--no-x-resources", 40, 0 },
1667 { "-no-site-file", "--no-site-file", 40, 0 },
1668 { "-u", "--user", 30, 1 },
1669 { "-user", 0, 30, 1 },
1670 { "-debug-init", "--debug-init", 20, 0 },
1671 { "-iconic", "--iconic", 15, 0 },
1672 { "-D", "--basic-display", 12, 0},
1673 { "-basic-display", 0, 12, 0},
1674 { "-nbc", "--no-blinking-cursor", 12, 0 },
1675 /* Now for the options handled in `command-line-1' (startup.el). */
1676 { "-nbi", "--no-bitmap-icon", 10, 0 },
1677 { "-bg", "--background-color", 10, 1 },
1678 { "-background", 0, 10, 1 },
1679 { "-fg", "--foreground-color", 10, 1 },
1680 { "-foreground", 0, 10, 1 },
1681 { "-bd", "--border-color", 10, 1 },
1682 { "-bw", "--border-width", 10, 1 },
1683 { "-ib", "--internal-border", 10, 1 },
1684 { "-ms", "--mouse-color", 10, 1 },
1685 { "-cr", "--cursor-color", 10, 1 },
1686 { "-fn", "--font", 10, 1 },
1687 { "-font", 0, 10, 1 },
1688 { "-fs", "--fullscreen", 10, 0 },
1689 { "-fw", "--fullwidth", 10, 0 },
1690 { "-fh", "--fullheight", 10, 0 },
1691 { "-mm", "--maximized", 10, 0 },
1692 { "-g", "--geometry", 10, 1 },
1693 { "-geometry", 0, 10, 1 },
1694 { "-T", "--title", 10, 1 },
1695 { "-title", 0, 10, 1 },
1696 { "-name", "--name", 10, 1 },
1697 { "-xrm", "--xrm", 10, 1 },
1698 { "-parent-id", "--parent-id", 10, 1 },
1699 { "-r", "--reverse-video", 5, 0 },
1700 { "-rv", 0, 5, 0 },
1701 { "-reverse", 0, 5, 0 },
1702 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1703 { "-vb", "--vertical-scroll-bars", 5, 0 },
1704 { "-color", "--color", 5, 0},
1705 { "-no-splash", "--no-splash", 3, 0 },
1706 { "-no-desktop", "--no-desktop", 3, 0 },
1707 #ifdef HAVE_NS
1708 { "-NSAutoLaunch", 0, 5, 1 },
1709 { "-NXAutoLaunch", 0, 5, 1 },
1710 { "-_NSMachLaunch", 0, 85, 1 },
1711 { "-MachLaunch", 0, 85, 1 },
1712 { "-macosx", 0, 85, 0 },
1713 { "-NSHost", 0, 85, 1 },
1714 #endif
1715 /* These have the same priority as ordinary file name args,
1716 so they are not reordered with respect to those. */
1717 { "-L", "--directory", 0, 1 },
1718 { "-directory", 0, 0, 1 },
1719 { "-l", "--load", 0, 1 },
1720 { "-load", 0, 0, 1 },
1721 /* This has no longname, because using --scriptload confuses sort_args,
1722 because then the --script long option seems to match twice; ie
1723 you can't have a long option which is a prefix of another long
1724 option. In any case, this is entirely an internal option. */
1725 { "-scriptload", NULL, 0, 1 },
1726 { "-f", "--funcall", 0, 1 },
1727 { "-funcall", 0, 0, 1 },
1728 { "-eval", "--eval", 0, 1 },
1729 { "-execute", "--execute", 0, 1 },
1730 { "-find-file", "--find-file", 0, 1 },
1731 { "-visit", "--visit", 0, 1 },
1732 { "-file", "--file", 0, 1 },
1733 { "-insert", "--insert", 0, 1 },
1734 #ifdef HAVE_NS
1735 { "-NXOpen", 0, 0, 1 },
1736 { "-NXOpenTemp", 0, 0, 1 },
1737 { "-NSOpen", 0, 0, 1 },
1738 { "-NSOpenTemp", 0, 0, 1 },
1739 { "-GSFilePath", 0, 0, 1 },
1740 #endif
1741 /* This should be processed after ordinary file name args and the like. */
1742 { "-kill", "--kill", -10, 0 },
1745 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1746 so that the highest priority ones come first.
1747 Do not change the order of elements of equal priority.
1748 If an option takes an argument, keep it and its argument together.
1750 If an option that takes no argument appears more
1751 than once, eliminate all but one copy of it. */
1753 static void
1754 sort_args (int argc, char **argv)
1756 char **new = xmalloc (argc * sizeof *new);
1757 /* For each element of argv,
1758 the corresponding element of options is:
1759 0 for an option that takes no arguments,
1760 1 for an option that takes one argument, etc.
1761 -1 for an ordinary non-option argument. */
1762 int *options = xnmalloc (argc, sizeof *options);
1763 int *priority = xnmalloc (argc, sizeof *priority);
1764 int to = 1;
1765 int incoming_used = 1;
1766 int from;
1767 int i;
1769 /* Categorize all the options,
1770 and figure out which argv elts are option arguments. */
1771 for (from = 1; from < argc; from++)
1773 options[from] = -1;
1774 priority[from] = 0;
1775 if (argv[from][0] == '-')
1777 int match;
1779 /* If we have found "--", don't consider
1780 any more arguments as options. */
1781 if (argv[from][1] == '-' && argv[from][2] == 0)
1783 /* Leave the "--", and everything following it, at the end. */
1784 for (; from < argc; from++)
1786 priority[from] = -100;
1787 options[from] = -1;
1789 break;
1792 /* Look for a match with a known old-fashioned option. */
1793 for (i = 0; i < ARRAYELTS (standard_args); i++)
1794 if (!strcmp (argv[from], standard_args[i].name))
1796 options[from] = standard_args[i].nargs;
1797 priority[from] = standard_args[i].priority;
1798 if (from + standard_args[i].nargs >= argc)
1799 fatal ("Option `%s' requires an argument\n", argv[from]);
1800 from += standard_args[i].nargs;
1801 goto done;
1804 /* Look for a match with a known long option.
1805 MATCH is -1 if no match so far, -2 if two or more matches so far,
1806 >= 0 (the table index of the match) if just one match so far. */
1807 if (argv[from][1] == '-')
1809 char const *equals = strchr (argv[from], '=');
1810 ptrdiff_t thislen =
1811 equals ? equals - argv[from] : strlen (argv[from]);
1813 match = -1;
1815 for (i = 0; i < ARRAYELTS (standard_args); i++)
1816 if (standard_args[i].longname
1817 && !strncmp (argv[from], standard_args[i].longname,
1818 thislen))
1820 if (match == -1)
1821 match = i;
1822 else
1823 match = -2;
1826 /* If we found exactly one match, use that. */
1827 if (match >= 0)
1829 options[from] = standard_args[match].nargs;
1830 priority[from] = standard_args[match].priority;
1831 /* If --OPTION=VALUE syntax is used,
1832 this option uses just one argv element. */
1833 if (equals != 0)
1834 options[from] = 0;
1835 if (from + options[from] >= argc)
1836 fatal ("Option `%s' requires an argument\n", argv[from]);
1837 from += options[from];
1839 /* FIXME When match < 0, shouldn't there be some error,
1840 or at least indication to the user that there was a
1841 problem? */
1843 done: ;
1847 /* Copy the arguments, in order of decreasing priority, to NEW. */
1848 new[0] = argv[0];
1849 while (incoming_used < argc)
1851 int best = -1;
1852 int best_priority = -9999;
1854 /* Find the highest priority remaining option.
1855 If several have equal priority, take the first of them. */
1856 for (from = 1; from < argc; from++)
1858 if (argv[from] != 0 && priority[from] > best_priority)
1860 best_priority = priority[from];
1861 best = from;
1863 /* Skip option arguments--they are tied to the options. */
1864 if (options[from] > 0)
1865 from += options[from];
1868 if (best < 0)
1869 emacs_abort ();
1871 /* Copy the highest priority remaining option, with its args, to NEW.
1872 Unless it is a duplicate of the previous one. */
1873 if (! (options[best] == 0
1874 && ! strcmp (new[to - 1], argv[best])))
1876 new[to++] = argv[best];
1877 for (i = 0; i < options[best]; i++)
1878 new[to++] = argv[best + i + 1];
1881 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
1883 /* Clear out this option in ARGV. */
1884 argv[best] = 0;
1885 for (i = 0; i < options[best]; i++)
1886 argv[best + i + 1] = 0;
1889 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1890 while (to < argc)
1891 new[to++] = 0;
1893 memcpy (argv, new, sizeof (char *) * argc);
1895 xfree (options);
1896 xfree (new);
1897 xfree (priority);
1900 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1901 doc: /* Exit the Emacs job and kill it.
1902 If ARG is an integer, return ARG as the exit program code.
1903 If ARG is a string, stuff it as keyboard input.
1905 This function is called upon receipt of the signals SIGTERM
1906 or SIGHUP, and upon SIGINT in batch mode.
1908 The value of `kill-emacs-hook', if not void,
1909 is a list of functions (of no args),
1910 all of which are called before Emacs is actually killed. */
1911 attributes: noreturn)
1912 (Lisp_Object arg)
1914 struct gcpro gcpro1;
1915 int exit_code;
1917 GCPRO1 (arg);
1919 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1920 set. */
1921 waiting_for_input = 0;
1922 run_hook (Qkill_emacs_hook);
1923 UNGCPRO;
1925 #ifdef HAVE_X_WINDOWS
1926 /* Transfer any clipboards we own to the clipboard manager. */
1927 x_clipboard_manager_save_all ();
1928 #endif
1930 shut_down_emacs (0, (STRINGP (arg) && !feof (stdin)) ? arg : Qnil);
1932 #ifdef HAVE_NS
1933 ns_release_autorelease_pool (ns_pool);
1934 #endif
1936 /* If we have an auto-save list file,
1937 kill it because we are exiting Emacs deliberately (not crashing).
1938 Do it after shut_down_emacs, which does an auto-save. */
1939 if (STRINGP (Vauto_save_list_file_name))
1941 Lisp_Object listfile;
1942 listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil);
1943 unlink (SSDATA (listfile));
1946 if (INTEGERP (arg))
1947 exit_code = (XINT (arg) < 0
1948 ? XINT (arg) | INT_MIN
1949 : XINT (arg) & INT_MAX);
1950 else
1951 exit_code = EXIT_SUCCESS;
1952 exit (exit_code);
1956 /* Perform an orderly shutdown of Emacs. Autosave any modified
1957 buffers, kill any child processes, clean up the terminal modes (if
1958 we're in the foreground), and other stuff like that. Don't perform
1959 any redisplay; this may be called when Emacs is shutting down in
1960 the background, or after its X connection has died.
1962 If SIG is a signal number, print a message for it.
1964 This is called by fatal signal handlers, X protocol error handlers,
1965 and Fkill_emacs. */
1967 void
1968 shut_down_emacs (int sig, Lisp_Object stuff)
1970 /* Prevent running of hooks from now on. */
1971 Vrun_hooks = Qnil;
1973 /* Don't update display from now on. */
1974 Vinhibit_redisplay = Qt;
1976 /* If we are controlling the terminal, reset terminal modes. */
1977 #ifndef DOS_NT
1979 pid_t pgrp = getpgrp ();
1980 pid_t tpgrp = tcgetpgrp (0);
1981 if ((tpgrp != -1) && tpgrp == pgrp)
1983 reset_all_sys_modes ();
1984 if (sig && sig != SIGTERM)
1986 static char const format[] = "Fatal error %d: ";
1987 char buf[sizeof format - 2 + INT_STRLEN_BOUND (int)];
1988 int buflen = sprintf (buf, format, sig);
1989 char const *sig_desc = safe_strsignal (sig);
1990 emacs_write (STDERR_FILENO, buf, buflen);
1991 emacs_write (STDERR_FILENO, sig_desc, strlen (sig_desc));
1995 #else
1996 fflush (stdout);
1997 reset_all_sys_modes ();
1998 #endif
2000 stuff_buffered_input (stuff);
2002 inhibit_sentinels = 1;
2003 kill_buffer_processes (Qnil);
2004 Fdo_auto_save (Qt, Qnil);
2006 unlock_all_files ();
2008 /* There is a tendency for a SIGIO signal to arrive within exit,
2009 and cause a SIGHUP because the input descriptor is already closed. */
2010 unrequest_sigio ();
2011 ignore_sigio ();
2013 /* Do this only if terminating normally, we want glyph matrices
2014 etc. in a core dump. */
2015 if (sig == 0 || sig == SIGTERM)
2017 check_glyph_memory ();
2018 check_message_stack ();
2021 #ifdef MSDOS
2022 dos_cleanup ();
2023 #endif
2025 #ifdef HAVE_NS
2026 ns_term_shutdown (sig);
2027 #endif
2029 #ifdef HAVE_LIBXML2
2030 xml_cleanup_parser ();
2031 #endif
2033 #ifdef WINDOWSNT
2034 term_ntproc (0);
2035 #endif
2040 #ifndef CANNOT_DUMP
2042 #include "unexec.h"
2044 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2045 doc: /* Dump current state of Emacs into executable file FILENAME.
2046 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2047 This is used in the file `loadup.el' when building Emacs.
2049 You must run Emacs in batch mode in order to dump it. */)
2050 (Lisp_Object filename, Lisp_Object symfile)
2052 Lisp_Object tem;
2053 Lisp_Object symbol;
2054 ptrdiff_t count = SPECPDL_INDEX ();
2056 check_pure_size ();
2058 if (! noninteractive)
2059 error ("Dumping Emacs works only in batch mode");
2061 if (!might_dump)
2062 error ("Emacs can be dumped only once");
2064 #ifdef GNU_LINUX
2066 /* Warn if the gap between BSS end and heap start is larger than this. */
2067 # define MAX_HEAP_BSS_DIFF (1024*1024)
2069 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2071 fprintf (stderr, "**************************************************\n");
2072 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2073 fprintf (stderr, "heap (%"pMu" bytes). This usually means that exec-shield\n",
2074 heap_bss_diff);
2075 fprintf (stderr, "or something similar is in effect. The dump may\n");
2076 fprintf (stderr, "fail because of this. See the section about\n");
2077 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
2078 fprintf (stderr, "**************************************************\n");
2080 #endif /* GNU_LINUX */
2082 /* Bind `command-line-processed' to nil before dumping,
2083 so that the dumped Emacs will process its command line
2084 and set up to work with X windows if appropriate. */
2085 symbol = intern ("command-line-processed");
2086 specbind (symbol, Qnil);
2088 CHECK_STRING (filename);
2089 filename = Fexpand_file_name (filename, Qnil);
2090 filename = ENCODE_FILE (filename);
2091 if (!NILP (symfile))
2093 CHECK_STRING (symfile);
2094 if (SCHARS (symfile))
2096 symfile = Fexpand_file_name (symfile, Qnil);
2097 symfile = ENCODE_FILE (symfile);
2101 tem = Vpurify_flag;
2102 Vpurify_flag = Qnil;
2104 fflush (stdout);
2105 /* Tell malloc where start of impure now is. */
2106 /* Also arrange for warnings when nearly out of space. */
2107 #if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
2108 #ifndef WINDOWSNT
2109 /* On Windows, this was done before dumping, and that once suffices.
2110 Meanwhile, my_edata is not valid on Windows. */
2111 memory_warnings (my_edata, malloc_warning);
2112 #endif /* not WINDOWSNT */
2113 #endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
2114 #ifdef DOUG_LEA_MALLOC
2115 malloc_state_ptr = malloc_get_state ();
2116 #endif
2118 unexec (SSDATA (filename), !NILP (symfile) ? SSDATA (symfile) : 0);
2120 #ifdef DOUG_LEA_MALLOC
2121 free (malloc_state_ptr);
2122 #endif
2124 #ifdef WINDOWSNT
2125 Vlibrary_cache = Qnil;
2126 #endif
2127 #ifdef HAVE_WINDOW_SYSTEM
2128 reset_image_types ();
2129 #endif
2131 Vpurify_flag = tem;
2133 return unbind_to (count, Qnil);
2136 #endif /* not CANNOT_DUMP */
2138 #if HAVE_SETLOCALE
2139 /* Recover from setlocale (LC_ALL, ""). */
2140 void
2141 fixup_locale (void)
2143 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2144 so that numbers are read and printed properly for Emacs Lisp. */
2145 setlocale (LC_NUMERIC, "C");
2148 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2149 DESIRED_LOCALE. */
2150 static void
2151 synchronize_locale (int category, Lisp_Object *plocale, Lisp_Object desired_locale)
2153 if (! EQ (*plocale, desired_locale))
2155 #ifdef WINDOWSNT
2156 /* Changing categories like LC_TIME usually requires to specify
2157 an encoding suitable for the new locale, but MS-Windows's
2158 'setlocale' will only switch the encoding when LC_ALL is
2159 specified. So we ignore CATEGORY and use LC_ALL instead. */
2160 category = LC_ALL;
2161 #endif
2162 *plocale = desired_locale;
2163 setlocale (category, (STRINGP (desired_locale)
2164 ? SSDATA (desired_locale)
2165 : ""));
2169 /* Set system time locale to match Vsystem_time_locale, if possible. */
2170 void
2171 synchronize_system_time_locale (void)
2173 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2174 Vsystem_time_locale);
2177 /* Set system messages locale to match Vsystem_messages_locale, if
2178 possible. */
2179 void
2180 synchronize_system_messages_locale (void)
2182 #ifdef LC_MESSAGES
2183 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2184 Vsystem_messages_locale);
2185 #endif
2187 #endif /* HAVE_SETLOCALE */
2190 Lisp_Object
2191 decode_env_path (const char *evarname, const char *defalt, bool empty)
2193 const char *path, *p;
2194 Lisp_Object lpath, element, tem;
2195 /* Default is to use "." for empty path elements.
2196 But if argument EMPTY is true, use nil instead. */
2197 Lisp_Object empty_element = empty ? Qnil : build_string (".");
2198 #ifdef WINDOWSNT
2199 bool defaulted = 0;
2200 static const char *emacs_dir_env = "%emacs_dir%/";
2201 const size_t emacs_dir_len = strlen (emacs_dir_env);
2202 const char *edir = egetenv ("emacs_dir");
2203 char emacs_dir[MAX_UTF8_PATH];
2205 /* egetenv looks in process-environment, which holds the variables
2206 in their original system-locale encoding. We need emacs_dir to
2207 be in UTF-8. */
2208 if (edir)
2209 filename_from_ansi (edir, emacs_dir);
2210 #endif
2212 /* It's okay to use getenv here, because this function is only used
2213 to initialize variables when Emacs starts up, and isn't called
2214 after that. */
2215 if (evarname != 0)
2216 path = getenv (evarname);
2217 else
2218 path = 0;
2219 if (!path)
2221 path = defalt;
2222 #ifdef WINDOWSNT
2223 defaulted = 1;
2224 #endif
2226 #ifdef DOS_NT
2227 /* Ensure values from the environment use the proper directory separator. */
2228 if (path)
2230 char *path_copy;
2232 #ifdef WINDOWSNT
2233 char *path_utf8, *q, *d;
2234 int cnv_result;
2236 /* Convert each element of PATH to UTF-8. */
2237 p = path_copy = alloca (strlen (path) + 1);
2238 strcpy (path_copy, path);
2239 d = path_utf8 = alloca (4 * strlen (path) + 1);
2240 *d = '\0';
2241 do {
2242 q = _mbschr (p, SEPCHAR);
2243 if (q)
2244 *q = '\0';
2245 cnv_result = filename_from_ansi (p, d);
2246 if (q)
2248 *q++ = SEPCHAR;
2249 p = q;
2250 /* If conversion of this PATH elements fails, make sure
2251 destination pointer will stay put, thus effectively
2252 ignoring the offending element. */
2253 if (cnv_result == 0)
2255 d += strlen (d);
2256 *d++ = SEPCHAR;
2259 else if (cnv_result != 0 && d > path_utf8)
2260 d[-1] = '\0'; /* remove last semi-colon and null-terminate PATH */
2261 } while (q);
2262 path_copy = path_utf8;
2263 #else /* MSDOS */
2264 path_copy = alloca (strlen (path) + 1);
2265 strcpy (path_copy, path);
2266 #endif
2267 dostounix_filename (path_copy);
2268 path = path_copy;
2270 #endif
2271 lpath = Qnil;
2272 while (1)
2274 p = strchr (path, SEPCHAR);
2275 if (!p)
2276 p = path + strlen (path);
2277 element = ((p - path) ? make_unibyte_string (path, p - path)
2278 : empty_element);
2279 if (! NILP (element))
2281 #ifdef WINDOWSNT
2282 /* Relative file names in the default path are interpreted as
2283 being relative to $emacs_dir. */
2284 if (edir && defaulted
2285 && strncmp (path, emacs_dir_env, emacs_dir_len) == 0)
2286 element = Fexpand_file_name (Fsubstring
2287 (element,
2288 make_number (emacs_dir_len),
2289 Qnil),
2290 build_unibyte_string (emacs_dir));
2291 #endif
2293 /* Add /: to the front of the name
2294 if it would otherwise be treated as magic. */
2295 tem = Ffind_file_name_handler (element, Qt);
2297 /* However, if the handler says "I'm safe",
2298 don't bother adding /:. */
2299 if (SYMBOLP (tem))
2301 Lisp_Object prop;
2302 prop = Fget (tem, intern ("safe-magic"));
2303 if (! NILP (prop))
2304 tem = Qnil;
2307 if (! NILP (tem))
2309 AUTO_STRING (slash_colon, "/:");
2310 element = concat2 (slash_colon, element);
2312 } /* !NILP (element) */
2314 lpath = Fcons (element, lpath);
2315 if (*p)
2316 path = p + 1;
2317 else
2318 break;
2320 return Fnreverse (lpath);
2323 DEFUN ("daemonp", Fdaemonp, Sdaemonp, 0, 0, 0,
2324 doc: /* Return non-nil if the current emacs process is a daemon.
2325 If the daemon was given a name argument, return that name. */)
2326 (void)
2328 if (IS_DAEMON)
2329 if (daemon_name)
2330 return build_string (daemon_name);
2331 else
2332 return Qt;
2333 else
2334 return Qnil;
2337 DEFUN ("daemon-initialized", Fdaemon_initialized, Sdaemon_initialized, 0, 0, 0,
2338 doc: /* Mark the Emacs daemon as being initialized.
2339 This finishes the daemonization process by doing the other half of detaching
2340 from the parent process and its tty file descriptors. */)
2341 (void)
2343 bool err = 0;
2345 if (!IS_DAEMON)
2346 error ("This function can only be called if emacs is run as a daemon");
2348 if (!DAEMON_RUNNING)
2349 error ("The daemon has already been initialized");
2351 if (NILP (Vafter_init_time))
2352 error ("This function can only be called after loading the init files");
2353 #ifndef WINDOWSNT
2354 int nfd;
2356 /* Get rid of stdin, stdout and stderr. */
2357 nfd = emacs_open ("/dev/null", O_RDWR, 0);
2358 err |= nfd < 0;
2359 err |= dup2 (nfd, 0) < 0;
2360 err |= dup2 (nfd, 1) < 0;
2361 err |= dup2 (nfd, 2) < 0;
2362 err |= emacs_close (nfd) != 0;
2364 /* Closing the pipe will notify the parent that it can exit.
2365 FIXME: In case some other process inherited the pipe, closing it here
2366 won't notify the parent because it's still open elsewhere, so we
2367 additionally send a byte, just to make sure the parent really exits.
2368 Instead, we should probably close the pipe in start-process and
2369 call-process to make sure the pipe is never inherited by
2370 subprocesses. */
2371 err |= write (daemon_pipe[1], "\n", 1) < 0;
2372 err |= emacs_close (daemon_pipe[1]) != 0;
2373 /* Set it to an invalid value so we know we've already run this function. */
2374 daemon_pipe[1] = -1;
2375 #else /* WINDOWSNT */
2376 /* Signal the waiting emacsclient process. */
2377 err |= SetEvent (w32_daemon_event) == 0;
2378 err |= CloseHandle (w32_daemon_event) == 0;
2379 /* Set it to an invalid value so we know we've already run this function. */
2380 w32_daemon_event = INVALID_HANDLE_VALUE;
2381 #endif
2383 if (err)
2384 error ("I/O error during daemon initialization");
2385 return Qt;
2388 void
2389 syms_of_emacs (void)
2391 DEFSYM (Qfile_name_handler_alist, "file-name-handler-alist");
2392 DEFSYM (Qrisky_local_variable, "risky-local-variable");
2393 DEFSYM (Qkill_emacs, "kill-emacs");
2394 DEFSYM (Qkill_emacs_hook, "kill-emacs-hook");
2396 #ifndef CANNOT_DUMP
2397 defsubr (&Sdump_emacs);
2398 #endif
2400 defsubr (&Skill_emacs);
2402 defsubr (&Sinvocation_name);
2403 defsubr (&Sinvocation_directory);
2404 defsubr (&Sdaemonp);
2405 defsubr (&Sdaemon_initialized);
2407 DEFVAR_LISP ("command-line-args", Vcommand_line_args,
2408 doc: /* Args passed by shell to Emacs, as a list of strings.
2409 Many arguments are deleted from the list as they are processed. */);
2411 DEFVAR_LISP ("system-type", Vsystem_type,
2412 doc: /* The value is a symbol indicating the type of operating system you are using.
2413 Special values:
2414 `gnu' compiled for a GNU Hurd system.
2415 `gnu/linux' compiled for a GNU/Linux system.
2416 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2417 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2418 `ms-dos' compiled as an MS-DOS application.
2419 `windows-nt' compiled as a native W32 application.
2420 `cygwin' compiled using the Cygwin library.
2421 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2422 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2423 Vsystem_type = intern_c_string (SYSTEM_TYPE);
2424 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2426 DEFVAR_LISP ("system-configuration", Vsystem_configuration,
2427 doc: /* Value is string indicating configuration Emacs was built for. */);
2428 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2430 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options,
2431 doc: /* String containing the configuration options Emacs was built with. */);
2432 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2434 DEFVAR_LISP ("system-configuration-features", Vsystem_configuration_features,
2435 doc: /* String listing some of the main features this Emacs was compiled with.
2436 An element of the form \"FOO\" generally means that HAVE_FOO was
2437 defined during the build. */);
2438 Vsystem_configuration_features = build_string (EMACS_CONFIG_FEATURES);
2440 DEFVAR_BOOL ("noninteractive", noninteractive1,
2441 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2443 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook,
2444 doc: /* Hook run when `kill-emacs' is called.
2445 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2446 in other similar situations), functions placed on this hook should not
2447 expect to be able to interact with the user. To ask for confirmation,
2448 see `kill-emacs-query-functions' instead.
2450 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2451 `noninteractive' was non-nil. */);
2452 Vkill_emacs_hook = Qnil;
2454 DEFVAR_LISP ("path-separator", Vpath_separator,
2455 doc: /* String containing the character that separates directories in
2456 search paths, such as PATH and other similar environment variables. */);
2458 char c = SEPCHAR;
2459 Vpath_separator = make_string (&c, 1);
2462 DEFVAR_LISP ("invocation-name", Vinvocation_name,
2463 doc: /* The program name that was used to run Emacs.
2464 Any directory names are omitted. */);
2466 DEFVAR_LISP ("invocation-directory", Vinvocation_directory,
2467 doc: /* The directory in which the Emacs executable was found, to run it.
2468 The value is nil if that directory's name is not known. */);
2470 DEFVAR_LISP ("installation-directory", Vinstallation_directory,
2471 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2472 In an installed Emacs, this is normally nil. It is non-nil if
2473 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2474 within the variable `invocation-directory' or its parent. For example,
2475 this is the case when running an uninstalled Emacs executable from its
2476 build directory. */);
2477 Vinstallation_directory = Qnil;
2479 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale,
2480 doc: /* System locale for messages. */);
2481 Vsystem_messages_locale = Qnil;
2483 DEFVAR_LISP ("previous-system-messages-locale",
2484 Vprevious_system_messages_locale,
2485 doc: /* Most recently used system locale for messages. */);
2486 Vprevious_system_messages_locale = Qnil;
2488 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale,
2489 doc: /* System locale for time. */);
2490 Vsystem_time_locale = Qnil;
2492 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale,
2493 doc: /* Most recently used system locale for time. */);
2494 Vprevious_system_time_locale = Qnil;
2496 DEFVAR_LISP ("before-init-time", Vbefore_init_time,
2497 doc: /* Value of `current-time' before Emacs begins initialization. */);
2498 Vbefore_init_time = Qnil;
2500 DEFVAR_LISP ("after-init-time", Vafter_init_time,
2501 doc: /* Value of `current-time' after loading the init files.
2502 This is nil during initialization. */);
2503 Vafter_init_time = Qnil;
2505 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources,
2506 doc: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2507 inhibit_x_resources = 0;
2509 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright,
2510 doc: /* Short copyright string for this version of Emacs. */);
2511 Vemacs_copyright = build_string (emacs_copyright);
2513 DEFVAR_LISP ("emacs-version", Vemacs_version,
2514 doc: /* Version numbers of this version of Emacs. */);
2515 Vemacs_version = build_string (emacs_version);
2517 DEFVAR_LISP ("report-emacs-bug-address", Vreport_emacs_bug_address,
2518 doc: /* Address of mailing list for GNU Emacs bugs. */);
2519 Vreport_emacs_bug_address = build_string (emacs_bugreport);
2521 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist,
2522 doc: /* Alist of dynamic libraries vs external files implementing them.
2523 Each element is a list (LIBRARY FILE...), where the car is a symbol
2524 representing a supported external library, and the rest are strings giving
2525 alternate filenames for that library.
2527 Emacs tries to load the library from the files in the order they appear on
2528 the list; if none is loaded, the running session of Emacs won't have access
2529 to that library.
2531 Note that image types `pbm' and `xbm' do not need entries in this variable
2532 because they do not depend on external libraries and are always available.
2534 Also note that this is not a generic facility for accessing external
2535 libraries; only those already known by Emacs will be loaded. */);
2536 Vdynamic_library_alist = Qnil;
2537 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable, Qt);
2539 #ifdef WINDOWSNT
2540 Vlibrary_cache = Qnil;
2541 staticpro (&Vlibrary_cache);
2542 #endif