(large-file-warning-threshold): Add type, groups.
[emacs.git] / src / emacs.c
blob05897e9bb44779229306cb997b9f469b44594dbd
1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,2003
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 #include <config.h>
24 #include <signal.h>
25 #include <errno.h>
26 #include <stdio.h>
28 #include <sys/types.h>
29 #include <sys/file.h>
31 #ifdef VMS
32 #include <ssdef.h>
33 #endif
35 #ifdef HAVE_UNISTD_H
36 #include <unistd.h>
37 #endif
39 #ifdef BSD_SYSTEM
40 #include <sys/ioctl.h>
41 #endif
43 #ifdef WINDOWSNT
44 #include <fcntl.h>
45 #endif
47 #include "lisp.h"
48 #include "commands.h"
49 #include "intervals.h"
50 #include "buffer.h"
51 #include "window.h"
53 #include "systty.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
56 #include "process.h"
57 #include "termhooks.h"
58 #include "keyboard.h"
59 #include "keymap.h"
61 #ifdef HAVE_SETLOCALE
62 #include <locale.h>
63 #endif
65 #ifdef HAVE_SETRLIMIT
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #endif
70 #ifndef O_RDWR
71 #define O_RDWR 2
72 #endif
74 #ifdef HAVE_SETPGID
75 #if !defined (USG) || defined (BSD_PGRPS)
76 #undef setpgrp
77 #define setpgrp setpgid
78 #endif
79 #endif
81 extern void malloc_warning P_ ((char *));
82 extern void set_time_zone_rule P_ ((char *));
83 #ifdef HAVE_INDEX
84 extern char *index P_ ((const char *, int));
85 #endif
87 /* Make these values available in GDB, which doesn't see macros. */
89 EMACS_INT gdb_valbits = VALBITS;
90 EMACS_INT gdb_gctypebits = GCTYPEBITS;
91 EMACS_INT gdb_emacs_intbits = sizeof (EMACS_INT) * BITS_PER_CHAR;
92 #ifdef DATA_SEG_BITS
93 EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
94 #else
95 EMACS_INT gdb_data_seg_bits = 0;
96 #endif
97 EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
99 /* Command line args from shell, as list of strings. */
100 Lisp_Object Vcommand_line_args;
102 /* The name under which Emacs was invoked, with any leading directory
103 names discarded. */
104 Lisp_Object Vinvocation_name;
106 /* The directory name from which Emacs was invoked. */
107 Lisp_Object Vinvocation_directory;
109 /* The directory name in which to find subdirs such as lisp and etc.
110 nil means get them only from PATH_LOADSEARCH. */
111 Lisp_Object Vinstallation_directory;
113 /* Hook run by `kill-emacs' before it does really anything. */
114 Lisp_Object Vkill_emacs_hook;
116 /* An empty lisp string. To avoid having to build any other. */
117 Lisp_Object empty_string;
119 #ifdef SIGUSR1
120 /* Hooks for signal USR1 and USR2 handling. */
121 Lisp_Object Vsignal_USR1_hook;
122 #ifdef SIGUSR2
123 Lisp_Object Vsignal_USR2_hook;
124 #endif
125 #endif
127 /* Search path separator. */
128 Lisp_Object Vpath_separator;
130 /* Set nonzero after Emacs has started up the first time.
131 Prevents reinitialization of the Lisp world and keymaps
132 on subsequent starts. */
133 int initialized;
135 #ifdef DOUG_LEA_MALLOC
136 /* Preserves a pointer to the memory allocated that copies that
137 static data inside glibc's malloc. */
138 void *malloc_state_ptr;
139 /* From glibc, a routine that returns a copy of the malloc internal state. */
140 extern void *malloc_get_state ();
141 /* From glibc, a routine that overwrites the malloc internal state. */
142 extern void malloc_set_state ();
143 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
144 dumping. Used to work around a bug in glibc's malloc. */
145 int malloc_using_checking;
146 #endif
148 /* Variable whose value is symbol giving operating system type. */
149 Lisp_Object Vsystem_type;
151 /* Variable whose value is string giving configuration built for. */
152 Lisp_Object Vsystem_configuration;
154 /* Variable whose value is string giving configuration options,
155 for use when reporting bugs. */
156 Lisp_Object Vsystem_configuration_options;
158 Lisp_Object Qfile_name_handler_alist;
160 /* Current and previous system locales for messages and time. */
161 Lisp_Object Vsystem_messages_locale;
162 Lisp_Object Vprevious_system_messages_locale;
163 Lisp_Object Vsystem_time_locale;
164 Lisp_Object Vprevious_system_time_locale;
166 /* If non-zero, emacs should not attempt to use a window-specific code,
167 but instead should use the virtual terminal under which it was started. */
168 int inhibit_window_system;
170 /* If nonzero, set Emacs to run at this priority. This is also used
171 in child_setup and sys_suspend to make sure subshells run at normal
172 priority; those functions have their own extern declaration. */
173 EMACS_INT emacs_priority;
175 /* If non-zero, a filter or a sentinel is running. Tested to save the match
176 data on the first attempt to change it inside asynchronous code. */
177 int running_asynch_code;
179 #ifdef BSD_PGRPS
180 /* See sysdep.c. */
181 extern int inherited_pgroup;
182 #endif
184 #ifdef HAVE_X_WINDOWS
185 /* If non-zero, -d was specified, meaning we're using some window system. */
186 int display_arg;
187 #endif
189 /* An address near the bottom of the stack.
190 Tells GC how to save a copy of the stack. */
191 char *stack_bottom;
193 #ifdef HAVE_WINDOW_SYSTEM
194 extern Lisp_Object Vwindow_system;
195 #endif /* HAVE_WINDOW_SYSTEM */
197 extern Lisp_Object Vauto_save_list_file_name;
199 #ifdef USG_SHARED_LIBRARIES
200 /* If nonzero, this is the place to put the end of the writable segment
201 at startup. */
203 unsigned int bss_end = 0;
204 #endif
206 /* Nonzero means running Emacs without interactive terminal. */
208 int noninteractive;
210 /* Value of Lisp variable `noninteractive'.
211 Normally same as C variable `noninteractive'
212 but nothing terrible happens if user sets this one. */
214 int noninteractive1;
216 /* Save argv and argc. */
217 char **initial_argv;
218 int initial_argc;
220 static void sort_args ();
221 void syms_of_emacs ();
223 #define USAGE1 "\
224 Usage: %s [OPTION-OR-FILENAME]...\n\
226 Run Emacs, the extensible, customizable, self-documenting real-time\n\
227 display editor. The recommended way to start Emacs for normal editing\n\
228 is with no options at all.\n\
230 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
231 read the main documentation for these command-line arguments.\n\
233 Initialization options:\n\
235 --batch do not do interactive display; implies -q\n\
236 --script FILE run FILE as an Emacs Lisp script.\n\
237 --debug-init enable Emacs Lisp debugger during init file\n\
238 --help display this help message and exit\n\
239 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
240 --no-init-file, -q load neither ~/.emacs nor default.el\n\
241 --no-shared-memory, -nl do not use shared memory\n\
242 --no-site-file do not load site-start.el\n\
243 --no-splash do not display a splash screen on startup\n\
244 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
245 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
246 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
247 --user, -u USER load ~USER/.emacs instead of your own\n\
248 --version display version information and exit\n\
250 Action options:\n\
252 FILE visit FILE using find-file\n\
253 +LINE FILE visit FILE using find-file, then go to line LINE\n\
254 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
255 column COLUMN\n\
256 --directory, -L DIR add DIR to variable load-path\n\
257 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
258 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
259 --find-file FILE visit FILE\n\
260 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
261 --insert FILE insert contents of FILE into current buffer\n\
262 --kill exit without asking for confirmation\n\
263 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
264 --visit FILE visit FILE\n\
267 #define USAGE2 "\
268 Display options:\n\
270 --background-color, -bg COLOR window background color\n\
271 --border-color, -bd COLOR main border color\n\
272 --border-width, -bw WIDTH width of main border\n\
273 --color=MODE color mode for character terminals;\n\
274 MODE defaults to `auto', and can also\n\
275 be `never', `auto', `always',\n\
276 or a mode name like `ansi8'\n\
277 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
278 --display, -d DISPLAY use X server DISPLAY\n\
279 --font, -fn FONT default font; must be fixed-width\n\
280 --foreground-color, -fg COLOR window foreground color\n\
281 --fullscreen, -fs make first frame fullscreen\n\
282 --fullwidth, -fw make the first frame wide as the screen\n\
283 --fullheight, -fh make the first frame high as the screen\n\
284 --geometry, -g GEOMETRY window geometry\n\
285 --iconic start Emacs in iconified state\n\
286 --icon-type, -i use picture of gnu for Emacs icon\n\
287 --internal-border, -ib WIDTH width between text and main border\n\
288 --line-spacing, -lsp PIXELS additional space to put between lines\n\
289 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
290 --name NAME title of main Emacs window\n\
291 --reverse-video, -r, -rv switch foreground and background\n\
292 --title, -T, -wn TITLE title for Emacs windows\n\
293 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
294 --xrm XRESOURCES set additional X resources\n\
296 You can generally also specify long option names with a single -; for\n\
297 example, -batch as well as --batch. You can use any unambiguous\n\
298 abbreviation for a --option.\n\
300 Various environment variables and window system resources also affect\n\
301 Emacs' operation. See the main documentation.\n\
304 #define USAGE3 "\
305 Report bugs to %s. First, please see the Bugs\n\
306 section of the Emacs manual or the file BUGS.\n"
309 /* Signal code for the fatal signal that was received. */
310 int fatal_error_code;
312 /* Nonzero if handling a fatal error already. */
313 int fatal_error_in_progress;
315 /* If non-null, call this function from fatal_error_signal before
316 committing suicide. */
318 void (*fatal_error_signal_hook) P_ ((void));
321 #ifdef SIGUSR1
322 SIGTYPE
323 handle_USR1_signal (sig)
324 int sig;
326 struct input_event buf;
328 bzero (&buf, sizeof buf);
329 buf.kind = USER_SIGNAL_EVENT;
330 buf.frame_or_window = selected_frame;
332 kbd_buffer_store_event (&buf);
334 #endif /* SIGUSR1 */
336 #ifdef SIGUSR2
337 SIGTYPE
338 handle_USR2_signal (sig)
339 int sig;
341 struct input_event buf;
343 bzero (&buf, sizeof buf);
344 buf.kind = USER_SIGNAL_EVENT;
345 buf.code = 1;
346 buf.frame_or_window = selected_frame;
348 kbd_buffer_store_event (&buf);
350 #endif /* SIGUSR2 */
352 /* Handle bus errors, invalid instruction, etc. */
353 SIGTYPE
354 fatal_error_signal (sig)
355 int sig;
357 fatal_error_code = sig;
358 signal (sig, SIG_DFL);
360 TOTALLY_UNBLOCK_INPUT;
362 /* If fatal error occurs in code below, avoid infinite recursion. */
363 if (! fatal_error_in_progress)
365 fatal_error_in_progress = 1;
367 shut_down_emacs (sig, 0, Qnil);
370 #ifdef VMS
371 LIB$STOP (SS$_ABORT);
372 #else
373 /* Signal the same code; this time it will really be fatal.
374 Remember that since we're in a signal handler, the signal we're
375 going to send is probably blocked, so we have to unblock it if we
376 want to really receive it. */
377 #ifndef MSDOS
378 sigunblock (sigmask (fatal_error_code));
379 #endif
381 if (fatal_error_signal_hook)
382 fatal_error_signal_hook ();
384 kill (getpid (), fatal_error_code);
385 #endif /* not VMS */
388 #ifdef SIGDANGER
390 /* Handler for SIGDANGER. */
391 SIGTYPE
392 memory_warning_signal (sig)
393 int sig;
395 signal (sig, memory_warning_signal);
397 malloc_warning ("Operating system warns that virtual memory is running low.\n");
399 /* It might be unsafe to call do_auto_save now. */
400 force_auto_save_soon ();
402 #endif
404 /* We define abort, rather than using it from the library,
405 so that GDB can return from a breakpoint here.
406 MSDOS has its own definition in msdos.c. */
408 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
410 #ifndef ABORT_RETURN_TYPE
411 #define ABORT_RETURN_TYPE void
412 #endif
414 ABORT_RETURN_TYPE
415 abort ()
417 kill (getpid (), SIGABRT);
418 /* This shouldn't be executed, but it prevents a warning. */
419 exit (1);
421 #endif
424 /* Code for dealing with Lisp access to the Unix command line. */
426 static void
427 init_cmdargs (argc, argv, skip_args)
428 int argc;
429 char **argv;
430 int skip_args;
432 register int i;
433 Lisp_Object name, dir, tem;
434 int count = SPECPDL_INDEX ();
435 Lisp_Object raw_name;
437 initial_argv = argv;
438 initial_argc = argc;
440 raw_name = build_string (argv[0]);
442 /* Add /: to the front of the name
443 if it would otherwise be treated as magic. */
444 tem = Ffind_file_name_handler (raw_name, Qt);
445 if (! NILP (tem))
446 raw_name = concat2 (build_string ("/:"), raw_name);
448 Vinvocation_name = Ffile_name_nondirectory (raw_name);
449 Vinvocation_directory = Ffile_name_directory (raw_name);
451 /* If we got no directory in argv[0], search PATH to find where
452 Emacs actually came from. */
453 if (NILP (Vinvocation_directory))
455 Lisp_Object found;
456 int yes = openp (Vexec_path, Vinvocation_name,
457 Vexec_suffixes, &found, make_number (X_OK));
458 if (yes == 1)
460 /* Add /: to the front of the name
461 if it would otherwise be treated as magic. */
462 tem = Ffind_file_name_handler (found, Qt);
463 if (! NILP (tem))
464 found = concat2 (build_string ("/:"), found);
465 Vinvocation_directory = Ffile_name_directory (found);
469 if (!NILP (Vinvocation_directory)
470 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
471 /* Emacs was started with relative path, like ./emacs.
472 Make it absolute. */
473 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
475 Vinstallation_directory = Qnil;
477 if (!NILP (Vinvocation_directory))
479 dir = Vinvocation_directory;
480 name = Fexpand_file_name (Vinvocation_name, dir);
481 while (1)
483 Lisp_Object tem, lib_src_exists;
484 Lisp_Object etc_exists, info_exists;
486 /* See if dir contains subdirs for use by Emacs.
487 Check for the ones that would exist in a build directory,
488 not including lisp and info. */
489 tem = Fexpand_file_name (build_string ("lib-src"), dir);
490 lib_src_exists = Ffile_exists_p (tem);
492 #ifdef MSDOS
493 /* MSDOS installations frequently remove lib-src, but we still
494 must set installation-directory, or else info won't find
495 its files (it uses the value of installation-directory). */
496 tem = Fexpand_file_name (build_string ("info"), dir);
497 info_exists = Ffile_exists_p (tem);
498 #else
499 info_exists = Qnil;
500 #endif
502 if (!NILP (lib_src_exists) || !NILP (info_exists))
504 tem = Fexpand_file_name (build_string ("etc"), dir);
505 etc_exists = Ffile_exists_p (tem);
506 if (!NILP (etc_exists))
508 Vinstallation_directory
509 = Ffile_name_as_directory (dir);
510 break;
514 /* See if dir's parent contains those subdirs. */
515 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
516 lib_src_exists = Ffile_exists_p (tem);
519 #ifdef MSDOS
520 /* See the MSDOS commentary above. */
521 tem = Fexpand_file_name (build_string ("../info"), dir);
522 info_exists = Ffile_exists_p (tem);
523 #else
524 info_exists = Qnil;
525 #endif
527 if (!NILP (lib_src_exists) || !NILP (info_exists))
529 tem = Fexpand_file_name (build_string ("../etc"), dir);
530 etc_exists = Ffile_exists_p (tem);
531 if (!NILP (etc_exists))
533 tem = Fexpand_file_name (build_string (".."), dir);
534 Vinstallation_directory
535 = Ffile_name_as_directory (tem);
536 break;
540 /* If the Emacs executable is actually a link,
541 next try the dir that the link points into. */
542 tem = Ffile_symlink_p (name);
543 if (!NILP (tem))
545 name = Fexpand_file_name (tem, dir);
546 dir = Ffile_name_directory (name);
548 else
549 break;
553 Vcommand_line_args = Qnil;
555 for (i = argc - 1; i >= 0; i--)
557 if (i == 0 || i > skip_args)
558 Vcommand_line_args
559 = Fcons (build_string (argv[i]), Vcommand_line_args);
562 unbind_to (count, Qnil);
565 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
566 doc: /* Return the program name that was used to run Emacs.
567 Any directory names are omitted. */)
570 return Fcopy_sequence (Vinvocation_name);
573 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
574 0, 0, 0,
575 doc: /* Return the directory name in which the Emacs executable was located. */)
578 return Fcopy_sequence (Vinvocation_directory);
582 #ifdef VMS
583 #ifdef LINK_CRTL_SHARE
584 #ifdef SHARABLE_LIB_BUG
585 extern noshare char **environ;
586 #endif /* SHARABLE_LIB_BUG */
587 #endif /* LINK_CRTL_SHARE */
588 #endif /* VMS */
590 #ifdef HAVE_TZSET
591 /* A valid but unlikely value for the TZ environment value.
592 It is OK (though a bit slower) if the user actually chooses this value. */
593 static char dump_tz[] = "UtC0";
594 #endif
596 #ifndef ORDINARY_LINK
597 /* We don't include crtbegin.o and crtend.o in the link,
598 so these functions and variables might be missed.
599 Provide dummy definitions to avoid error.
600 (We don't have any real constructors or destructors.) */
601 #ifdef __GNUC__
602 #ifndef GCC_CTORS_IN_LIBC
603 void __do_global_ctors ()
605 void __do_global_ctors_aux ()
607 void __do_global_dtors ()
609 /* GNU/Linux has a bug in its library; avoid an error. */
610 #ifndef GNU_LINUX
611 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
612 #endif
613 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
614 #endif /* GCC_CTORS_IN_LIBC */
615 void __main ()
617 #endif /* __GNUC__ */
618 #endif /* ORDINARY_LINK */
620 /* Test whether the next argument in ARGV matches SSTR or a prefix of
621 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
622 (the argument is supposed to have a value) store in *VALPTR either
623 the next argument or the portion of this one after the equal sign.
624 ARGV is read starting at position *SKIPPTR; this index is advanced
625 by the number of arguments used.
627 Too bad we can't just use getopt for all of this, but we don't have
628 enough information to do it right. */
630 static int
631 argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
632 char **argv;
633 int argc;
634 char *sstr;
635 char *lstr;
636 int minlen;
637 char **valptr;
638 int *skipptr;
640 char *p = NULL;
641 int arglen;
642 char *arg;
644 /* Don't access argv[argc]; give up in advance. */
645 if (argc <= *skipptr + 1)
646 return 0;
648 arg = argv[*skipptr+1];
649 if (arg == NULL)
650 return 0;
651 if (strcmp (arg, sstr) == 0)
653 if (valptr != NULL)
655 *valptr = argv[*skipptr+2];
656 *skipptr += 2;
658 else
659 *skipptr += 1;
660 return 1;
662 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
663 ? p - arg : strlen (arg));
664 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
665 return 0;
666 else if (valptr == NULL)
668 *skipptr += 1;
669 return 1;
671 else if (p != NULL)
673 *valptr = p+1;
674 *skipptr += 1;
675 return 1;
677 else if (argv[*skipptr+2] != NULL)
679 *valptr = argv[*skipptr+2];
680 *skipptr += 2;
681 return 1;
683 else
685 return 0;
689 #ifdef DOUG_LEA_MALLOC
691 /* malloc can be invoked even before main (e.g. by the dynamic
692 linker), so the dumped malloc state must be restored as early as
693 possible using this special hook. */
695 static void
696 malloc_initialize_hook ()
698 #ifndef USE_CRT_DLL
699 extern char **environ;
700 #endif
702 if (initialized)
704 if (!malloc_using_checking)
705 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
706 ignored if the heap to be restored was constructed without
707 malloc checking. Can't use unsetenv, since that calls malloc. */
709 char **p;
711 for (p = environ; p && *p; p++)
712 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
715 *p = p[1];
716 while (*++p);
717 break;
721 malloc_set_state (malloc_state_ptr);
722 free (malloc_state_ptr);
724 else
725 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
728 void (*__malloc_initialize_hook) () = malloc_initialize_hook;
730 #endif /* DOUG_LEA_MALLOC */
733 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
734 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
736 /* This function is used to determine an address to which bug report should
737 be sent. */
739 char *
740 bug_reporting_address ()
742 int count = 0;
743 Lisp_Object temp;
744 char *string;
746 temp = Fsymbol_value (intern ("emacs-version"));
748 /* When `emacs-version' is invalid, use normal address. */
749 if (!STRINGP(temp))
750 return REPORT_EMACS_BUG_ADDRESS;
752 string = SDATA (temp);
754 /* Count dots in `emacs-version'. */
755 while (*string)
757 if (*string == '.')
758 count++;
759 string++;
762 /* When `emacs-version' has at least three dots, it is development or
763 pretest version of Emacs. */
764 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
768 /* ARGSUSED */
770 main (argc, argv
771 #ifdef VMS
772 , envp
773 #endif
775 int argc;
776 char **argv;
777 #ifdef VMS
778 char **envp;
779 #endif
781 #if GC_MARK_STACK
782 Lisp_Object dummy;
783 #endif
784 char stack_bottom_variable;
785 int do_initial_setlocale;
786 int skip_args = 0;
787 #ifndef USE_CRT_DLL
788 extern int errno;
789 #endif
790 #ifdef HAVE_SETRLIMIT
791 struct rlimit rlim;
792 #endif
793 int no_loadup = 0;
794 char *junk = 0;
796 #if GC_MARK_STACK
797 extern Lisp_Object *stack_base;
798 stack_base = &dummy;
799 #endif
801 #ifdef LINUX_SBRK_BUG
802 __sbrk (1);
803 #endif
805 #ifdef RUN_TIME_REMAP
806 if (initialized)
807 run_time_remap (argv[0]);
808 #endif
810 #ifdef MAC_OSX
811 if (!initialized)
812 unexec_init_emacs_zone ();
813 #endif
815 sort_args (argc, argv);
816 argc = 0;
817 while (argv[argc]) argc++;
819 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
820 /* We don't know the version number unless this is a dumped Emacs.
821 So ignore --version otherwise. */
822 && initialized)
824 Lisp_Object tem;
825 tem = Fsymbol_value (intern ("emacs-version"));
826 if (!STRINGP (tem))
828 fprintf (stderr, "Invalid value of `emacs-version'\n");
829 exit (1);
831 else
833 printf ("GNU Emacs %s\n", SDATA (tem));
834 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
835 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
836 printf ("You may redistribute copies of Emacs\n");
837 printf ("under the terms of the GNU General Public License.\n");
838 printf ("For more information about these matters, ");
839 printf ("see the file named COPYING.\n");
840 exit (0);
844 /* Map in shared memory, if we are using that. */
845 #ifdef HAVE_SHM
846 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
848 map_in_data (0);
849 /* The shared memory was just restored, which clobbered this. */
850 skip_args = 1;
852 else
854 map_in_data (1);
855 /* The shared memory was just restored, which clobbered this. */
856 skip_args = 0;
858 #endif
860 #ifdef NeXT
862 extern int malloc_cookie;
863 /* This helps out unexnext.c. */
864 if (initialized)
865 if (malloc_jumpstart (malloc_cookie) != 0)
866 printf ("malloc jumpstart failed!\n");
868 #endif /* NeXT */
870 #ifdef MAC_OSX
871 /* Skip process serial number passed in the form -psn_x_y as
872 command-line argument. */
873 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
874 skip_args++;
875 #endif /* MAC_OSX */
877 #ifdef VMS
878 /* If -map specified, map the data file in. */
880 char *file;
881 if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
882 mapin_data (file);
885 #ifdef LINK_CRTL_SHARE
886 #ifdef SHARABLE_LIB_BUG
887 /* Bletcherous shared libraries! */
888 if (!stdin)
889 stdin = fdopen (0, "r");
890 if (!stdout)
891 stdout = fdopen (1, "w");
892 if (!stderr)
893 stderr = fdopen (2, "w");
894 if (!environ)
895 environ = envp;
896 #endif /* SHARABLE_LIB_BUG */
897 #endif /* LINK_CRTL_SHARE */
898 #endif /* VMS */
900 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
901 /* Extend the stack space available.
902 Don't do that if dumping, since some systems (e.g. DJGPP)
903 might define a smaller stack limit at that time. */
904 if (1
905 #ifndef CANNOT_DUMP
906 && (!noninteractive || initialized)
907 #endif
908 && !getrlimit (RLIMIT_STACK, &rlim))
910 long newlim;
911 extern int re_max_failures;
912 /* Approximate the amount regex.c needs per unit of re_max_failures. */
913 int ratio = 20 * sizeof (char *);
914 /* Then add 33% to cover the size of the smaller stacks that regex.c
915 successively allocates and discards, on its way to the maximum. */
916 ratio += ratio / 3;
917 /* Add in some extra to cover
918 what we're likely to use for other reasons. */
919 newlim = re_max_failures * ratio + 200000;
920 #ifdef __NetBSD__
921 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
922 stack allocation routine for new process that the allocation
923 fails if stack limit is not on page boundary. So, round up the
924 new limit to page boundary. */
925 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
926 #endif
927 if (newlim > rlim.rlim_max)
929 newlim = rlim.rlim_max;
930 /* Don't let regex.c overflow the stack we have. */
931 re_max_failures = (newlim - 200000) / ratio;
933 if (rlim.rlim_cur < newlim)
934 rlim.rlim_cur = newlim;
936 setrlimit (RLIMIT_STACK, &rlim);
938 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
940 /* Record (approximately) where the stack begins. */
941 stack_bottom = &stack_bottom_variable;
943 #ifdef USG_SHARED_LIBRARIES
944 if (bss_end)
945 brk ((void *)bss_end);
946 #endif
948 clearerr (stdin);
950 #ifndef SYSTEM_MALLOC
951 /* Arrange to get warning messages as memory fills up. */
952 memory_warnings (0, malloc_warning);
954 /* Call malloc at least once, to run the initial __malloc_hook.
955 Also call realloc and free for consistency. */
956 free (realloc (malloc (4), 4));
958 /* Arrange to disable interrupt input inside malloc etc. */
959 uninterrupt_malloc ();
960 #endif /* not SYSTEM_MALLOC */
962 #if defined (MSDOS) || defined (WINDOWSNT)
963 /* We do all file input/output as binary files. When we need to translate
964 newlines, we do that manually. */
965 _fmode = O_BINARY;
966 #endif /* MSDOS || WINDOWSNT */
968 #ifdef MSDOS
969 #if __DJGPP__ >= 2
970 if (!isatty (fileno (stdin)))
971 setmode (fileno (stdin), O_BINARY);
972 if (!isatty (fileno (stdout)))
974 fflush (stdout);
975 setmode (fileno (stdout), O_BINARY);
977 #else /* not __DJGPP__ >= 2 */
978 (stdin)->_flag &= ~_IOTEXT;
979 (stdout)->_flag &= ~_IOTEXT;
980 (stderr)->_flag &= ~_IOTEXT;
981 #endif /* not __DJGPP__ >= 2 */
982 #endif /* MSDOS */
984 #ifdef SET_EMACS_PRIORITY
985 if (emacs_priority)
986 nice (emacs_priority);
987 setuid (getuid ());
988 #endif /* SET_EMACS_PRIORITY */
990 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
991 The build procedure uses this while dumping, to ensure that the
992 dumped Emacs does not have its system locale tables initialized,
993 as that might cause screwups when the dumped Emacs starts up. */
995 char *lc_all = getenv ("LC_ALL");
996 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
999 /* Set locale now, so that initial error messages are localized properly.
1000 fixup_locale must wait until later, since it builds strings. */
1001 if (do_initial_setlocale)
1002 setlocale (LC_ALL, "");
1004 #ifdef EXTRA_INITIALIZE
1005 EXTRA_INITIALIZE;
1006 #endif
1008 inhibit_window_system = 0;
1010 /* Handle the -t switch, which specifies filename to use as terminal. */
1011 while (1)
1013 char *term;
1014 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1016 int result;
1017 emacs_close (0);
1018 emacs_close (1);
1019 result = emacs_open (term, O_RDWR, 0);
1020 if (result < 0)
1022 char *errstring = strerror (errno);
1023 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1024 exit (1);
1026 dup (0);
1027 if (! isatty (0))
1029 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1030 exit (1);
1032 fprintf (stderr, "Using %s\n", term);
1033 #ifdef HAVE_WINDOW_SYSTEM
1034 inhibit_window_system = 1; /* -t => -nw */
1035 #endif
1037 else
1038 break;
1041 /* Command line option --no-windows is deprecated and thus not mentioned
1042 in the manual and usage informations. */
1043 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1044 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
1045 inhibit_window_system = 1;
1047 /* Handle the -batch switch, which means don't do interactive display. */
1048 noninteractive = 0;
1049 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
1050 noninteractive = 1;
1051 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1053 noninteractive = 1; /* Set batch mode. */
1054 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1055 handled in proper sequence. */
1056 argv[skip_args - 1] = "-l";
1057 skip_args -= 2;
1058 sort_args (argc, argv);
1061 /* Handle the --help option, which gives a usage message. */
1062 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
1064 printf (USAGE1, argv[0]);
1065 printf (USAGE2);
1066 printf (USAGE3, bug_reporting_address ());
1067 exit (0);
1070 if (! noninteractive)
1072 #ifdef BSD_PGRPS
1073 if (initialized)
1075 inherited_pgroup = EMACS_GETPGRP (0);
1076 setpgrp (0, getpid ());
1078 #else
1079 #if defined (USG5) && defined (INTERRUPT_INPUT)
1080 setpgrp ();
1081 #endif
1082 #endif
1085 init_signals ();
1087 /* Don't catch SIGHUP if dumping. */
1088 if (1
1089 #ifndef CANNOT_DUMP
1090 && initialized
1091 #endif
1094 sigblock (sigmask (SIGHUP));
1095 /* In --batch mode, don't catch SIGHUP if already ignored.
1096 That makes nohup work. */
1097 if (! noninteractive
1098 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1099 signal (SIGHUP, fatal_error_signal);
1100 sigunblock (sigmask (SIGHUP));
1103 if (
1104 #ifndef CANNOT_DUMP
1105 ! noninteractive || initialized
1106 #else
1108 #endif
1111 /* Don't catch these signals in batch mode if dumping.
1112 On some machines, this sets static data that would make
1113 signal fail to work right when the dumped Emacs is run. */
1114 signal (SIGQUIT, fatal_error_signal);
1115 signal (SIGILL, fatal_error_signal);
1116 signal (SIGTRAP, fatal_error_signal);
1117 #ifdef SIGUSR1
1118 signal (SIGUSR1, handle_USR1_signal);
1119 #ifdef SIGUSR2
1120 signal (SIGUSR2, handle_USR2_signal);
1121 #endif
1122 #endif
1123 #ifdef SIGABRT
1124 signal (SIGABRT, fatal_error_signal);
1125 #endif
1126 #ifdef SIGHWE
1127 signal (SIGHWE, fatal_error_signal);
1128 #endif
1129 #ifdef SIGPRE
1130 signal (SIGPRE, fatal_error_signal);
1131 #endif
1132 #ifdef SIGORE
1133 signal (SIGORE, fatal_error_signal);
1134 #endif
1135 #ifdef SIGUME
1136 signal (SIGUME, fatal_error_signal);
1137 #endif
1138 #ifdef SIGDLK
1139 signal (SIGDLK, fatal_error_signal);
1140 #endif
1141 #ifdef SIGCPULIM
1142 signal (SIGCPULIM, fatal_error_signal);
1143 #endif
1144 #ifdef SIGIOT
1145 /* This is missing on some systems - OS/2, for example. */
1146 signal (SIGIOT, fatal_error_signal);
1147 #endif
1148 #ifdef SIGEMT
1149 signal (SIGEMT, fatal_error_signal);
1150 #endif
1151 signal (SIGFPE, fatal_error_signal);
1152 #ifdef SIGBUS
1153 signal (SIGBUS, fatal_error_signal);
1154 #endif
1155 signal (SIGSEGV, fatal_error_signal);
1156 #ifdef SIGSYS
1157 signal (SIGSYS, fatal_error_signal);
1158 #endif
1159 signal (SIGTERM, fatal_error_signal);
1160 #ifdef SIGXCPU
1161 signal (SIGXCPU, fatal_error_signal);
1162 #endif
1163 #ifdef SIGXFSZ
1164 signal (SIGXFSZ, fatal_error_signal);
1165 #endif /* SIGXFSZ */
1167 #ifdef SIGDANGER
1168 /* This just means available memory is getting low. */
1169 signal (SIGDANGER, memory_warning_signal);
1170 #endif
1172 #ifdef AIX
1173 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1174 signal (SIGXCPU, fatal_error_signal);
1175 #ifndef _I386
1176 signal (SIGIOINT, fatal_error_signal);
1177 #endif
1178 signal (SIGGRANT, fatal_error_signal);
1179 signal (SIGRETRACT, fatal_error_signal);
1180 signal (SIGSOUND, fatal_error_signal);
1181 signal (SIGMSG, fatal_error_signal);
1182 #endif /* AIX */
1185 noninteractive1 = noninteractive;
1187 /* Perform basic initializations (not merely interning symbols). */
1189 if (!initialized)
1191 init_alloc_once ();
1192 init_obarray ();
1193 init_eval_once ();
1194 init_charset_once ();
1195 init_coding_once ();
1196 init_syntax_once (); /* Create standard syntax table. */
1197 init_category_once (); /* Create standard category table. */
1198 /* Must be done before init_buffer. */
1199 init_casetab_once ();
1200 init_buffer_once (); /* Create buffer table and some buffers. */
1201 init_minibuf_once (); /* Create list of minibuffers. */
1202 /* Must precede init_window_once. */
1204 /* Call syms_of_xfaces before init_window_once because that
1205 function creates Vterminal_frame. Termcap frames now use
1206 faces, and the face implementation uses some symbols as
1207 face names. */
1208 syms_of_xfaces ();
1209 /* Call syms_of_keyboard before init_window_once because
1210 keyboard sets up symbols that include some face names that
1211 the X support will want to use. This can happen when
1212 CANNOT_DUMP is defined. */
1213 syms_of_keyboard ();
1215 #ifdef MAC_OS8
1216 /* init_window_once calls make_terminal_frame which on Mac OS
1217 creates a full-fledge output_mac type frame. This does not
1218 work correctly before syms_of_textprop, syms_of_macfns,
1219 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1220 syms_of_frame, mac_initialize, and init_keyboard have already
1221 been called. */
1222 syms_of_textprop ();
1223 syms_of_macfns ();
1224 syms_of_ccl ();
1225 syms_of_fontset ();
1226 syms_of_macterm ();
1227 syms_of_macmenu ();
1228 syms_of_data ();
1229 syms_of_search ();
1230 syms_of_frame ();
1232 mac_initialize ();
1233 init_keyboard ();
1234 #endif
1236 init_window_once (); /* Init the window system. */
1237 init_fileio_once (); /* Must precede any path manipulation. */
1240 init_alloc ();
1242 if (do_initial_setlocale)
1244 fixup_locale ();
1245 Vsystem_messages_locale = Vprevious_system_messages_locale;
1246 Vsystem_time_locale = Vprevious_system_time_locale;
1249 init_eval ();
1250 init_data ();
1251 #ifdef CLASH_DETECTION
1252 init_filelock ();
1253 #endif
1254 init_atimer ();
1255 running_asynch_code = 0;
1257 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1258 but not while dumping. */
1259 if (1)
1261 int inhibit_unibyte = 0;
1263 /* --multibyte overrides EMACS_UNIBYTE. */
1264 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
1265 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1266 /* Ignore EMACS_UNIBYTE before dumping. */
1267 || (!initialized && noninteractive))
1268 inhibit_unibyte = 1;
1270 /* --unibyte requests that we set up to do everything with single-byte
1271 buffers and strings. We need to handle this before calling
1272 init_lread, init_editfns and other places that generate Lisp strings
1273 from text in the environment. */
1274 /* Actually this shouldn't be needed as of 20.4 in a generally
1275 unibyte environment. As handa says, environment values
1276 aren't now decoded; also existing buffers are now made
1277 unibyte during startup if .emacs sets unibyte. Tested with
1278 8-bit data in environment variables and /etc/passwd, setting
1279 unibyte and Latin-1 in .emacs. -- Dave Love */
1280 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1281 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1282 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1284 Lisp_Object old_log_max;
1285 Lisp_Object symbol, tail;
1287 symbol = intern ("default-enable-multibyte-characters");
1288 Fset (symbol, Qnil);
1290 if (initialized)
1292 /* Erase pre-dump messages in *Messages* now so no abort. */
1293 old_log_max = Vmessage_log_max;
1294 XSETFASTINT (Vmessage_log_max, 0);
1295 message_dolog ("", 0, 1, 0);
1296 Vmessage_log_max = old_log_max;
1299 for (tail = Vbuffer_alist; CONSP (tail);
1300 tail = XCDR (tail))
1302 Lisp_Object buffer;
1304 buffer = Fcdr (XCAR (tail));
1305 /* Verify that all buffers are empty now, as they
1306 ought to be. */
1307 if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
1308 abort ();
1309 /* It is safe to do this crudely in an empty buffer. */
1310 XBUFFER (buffer)->enable_multibyte_characters = Qnil;
1315 no_loadup
1316 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1319 #ifdef HAVE_X_WINDOWS
1320 /* Stupid kludge to catch command-line display spec. We can't
1321 handle this argument entirely in window system dependent code
1322 because we don't even know which window system dependent code
1323 to run until we've recognized this argument. */
1325 char *displayname = 0;
1326 int count_before = skip_args;
1328 /* Skip any number of -d options, but only use the last one. */
1329 while (1)
1331 int count_before_this = skip_args;
1333 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1334 display_arg = 1;
1335 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1336 display_arg = 1;
1337 else
1338 break;
1340 count_before = count_before_this;
1343 /* If we have the form --display=NAME,
1344 convert it into -d name.
1345 This requires inserting a new element into argv. */
1346 if (displayname != 0 && skip_args - count_before == 1)
1348 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1349 int j;
1351 for (j = 0; j < count_before + 1; j++)
1352 new[j] = argv[j];
1353 new[count_before + 1] = "-d";
1354 new[count_before + 2] = displayname;
1355 for (j = count_before + 2; j <argc; j++)
1356 new[j + 1] = argv[j];
1357 argv = new;
1358 argc++;
1360 /* Change --display to -d, when its arg is separate. */
1361 else if (displayname != 0 && skip_args > count_before
1362 && argv[count_before + 1][1] == '-')
1363 argv[count_before + 1] = "-d";
1365 /* Don't actually discard this arg. */
1366 skip_args = count_before;
1368 #endif
1370 /* argmatch must not be used after here,
1371 except when bulding temacs
1372 because the -d argument has not been skipped in skip_args. */
1374 #ifdef MSDOS
1375 /* Call early 'cause init_environment needs it. */
1376 init_dosfns ();
1377 /* Set defaults for several environment variables. */
1378 if (initialized)
1379 init_environment (argc, argv, skip_args);
1380 else
1381 tzset ();
1382 #endif /* MSDOS */
1384 #ifdef WINDOWSNT
1385 globals_of_w32 ();
1386 /* Initialize environment from registry settings. */
1387 init_environment (argv);
1388 init_ntproc (); /* must precede init_editfns. */
1389 #endif
1391 #ifdef HAVE_CARBON
1392 if (initialized)
1393 init_mac_osx_environment ();
1394 #endif
1396 /* egetenv is a pretty low-level facility, which may get called in
1397 many circumstances; it seems flimsy to put off initializing it
1398 until calling init_callproc. */
1399 set_process_environment ();
1400 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1401 if this is not done. Do it after set_process_environment so that we
1402 don't pollute Vprocess_environment. */
1403 /* Setting LANG here will defeat the startup locale processing... */
1404 #ifdef AIX3_2
1405 putenv ("LANG=C");
1406 #endif
1408 init_buffer (); /* Init default directory of main buffer. */
1410 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1411 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1413 if (initialized)
1415 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1416 Lisp_Object old_log_max;
1417 old_log_max = Vmessage_log_max;
1418 XSETFASTINT (Vmessage_log_max, 0);
1419 message_dolog ("", 0, 1, 0);
1420 Vmessage_log_max = old_log_max;
1423 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1424 init_lread ();
1426 /* Intern the names of all standard functions and variables;
1427 define standard keys. */
1429 if (!initialized)
1431 /* The basic levels of Lisp must come first. */
1432 /* And data must come first of all
1433 for the sake of symbols like error-message. */
1434 #ifndef MAC_OS8
1435 /* Called before init_window_once for Mac OS Classic. */
1436 syms_of_data ();
1437 #endif
1438 syms_of_alloc ();
1439 syms_of_lread ();
1440 syms_of_print ();
1441 syms_of_eval ();
1442 syms_of_fns ();
1443 syms_of_floatfns ();
1445 syms_of_abbrev ();
1446 syms_of_buffer ();
1447 syms_of_bytecode ();
1448 syms_of_callint ();
1449 syms_of_casefiddle ();
1450 syms_of_casetab ();
1451 syms_of_callproc ();
1452 syms_of_category ();
1453 #ifndef MAC_OS8
1454 /* Called before init_window_once for Mac OS Classic. */
1455 syms_of_ccl ();
1456 #endif
1457 syms_of_charset ();
1458 syms_of_cmds ();
1459 #ifndef NO_DIR_LIBRARY
1460 syms_of_dired ();
1461 #endif /* not NO_DIR_LIBRARY */
1462 syms_of_display ();
1463 syms_of_doc ();
1464 syms_of_editfns ();
1465 syms_of_emacs ();
1466 syms_of_fileio ();
1467 syms_of_coding (); /* This should be after syms_of_fileio. */
1468 #ifdef CLASH_DETECTION
1469 syms_of_filelock ();
1470 #endif /* CLASH_DETECTION */
1471 syms_of_indent ();
1472 syms_of_insdel ();
1473 syms_of_keymap ();
1474 syms_of_macros ();
1475 syms_of_marker ();
1476 syms_of_minibuf ();
1477 syms_of_process ();
1478 #ifndef MAC_OS8
1479 /* Called before init_window_once for Mac OS Classic. */
1480 syms_of_search ();
1481 syms_of_frame ();
1482 #endif
1483 syms_of_syntax ();
1484 syms_of_term ();
1485 syms_of_undo ();
1486 #ifdef HAVE_SOUND
1487 syms_of_sound ();
1488 #endif
1489 #ifndef MAC_OS8
1490 /* Called before init_window_once for Mac OS Classic. */
1491 syms_of_textprop ();
1492 #endif
1493 syms_of_composite ();
1494 #ifdef VMS
1495 syms_of_vmsproc ();
1496 #endif /* VMS */
1497 #ifdef WINDOWSNT
1498 syms_of_ntproc ();
1499 #endif /* WINDOWSNT */
1500 syms_of_window ();
1501 syms_of_xdisp ();
1502 #ifdef HAVE_X_WINDOWS
1503 syms_of_xterm ();
1504 syms_of_xfns ();
1505 syms_of_fontset ();
1506 #ifdef HAVE_X_SM
1507 syms_of_xsmfns ();
1508 #endif
1509 #ifdef HAVE_X11
1510 syms_of_xselect ();
1511 #endif
1512 #endif /* HAVE_X_WINDOWS */
1514 #ifndef HAVE_NTGUI
1515 #ifndef MAC_OS
1516 /* Called before init_window_once for Mac OS Classic. */
1517 syms_of_xmenu ();
1518 #endif
1519 #endif
1521 #ifdef HAVE_NTGUI
1522 syms_of_w32term ();
1523 syms_of_w32fns ();
1524 syms_of_w32select ();
1525 syms_of_w32menu ();
1526 syms_of_fontset ();
1527 #endif /* HAVE_NTGUI */
1529 #ifdef HAVE_CARBON
1530 syms_of_macterm ();
1531 syms_of_macfns ();
1532 syms_of_macmenu ();
1533 syms_of_fontset ();
1534 #endif /* HAVE_CARBON */
1536 #ifdef SYMS_SYSTEM
1537 SYMS_SYSTEM;
1538 #endif
1540 #ifdef SYMS_MACHINE
1541 SYMS_MACHINE;
1542 #endif
1544 keys_of_casefiddle ();
1545 keys_of_cmds ();
1546 keys_of_buffer ();
1547 keys_of_keyboard ();
1548 keys_of_keymap ();
1549 keys_of_minibuf ();
1550 keys_of_window ();
1552 else
1555 Initialization that must be done even if the global variable
1556 initialized is non zero
1558 #ifdef HAVE_NTGUI
1559 globals_of_w32fns ();
1560 globals_of_w32menu ();
1561 #endif /* end #ifdef HAVE_NTGUI */
1564 if (!noninteractive)
1566 #ifdef VMS
1567 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1568 #endif /* VMS */
1569 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1571 #ifndef MAC_OS8
1572 /* Called before init_window_once for Mac OS Classic. */
1573 init_keyboard (); /* This too must precede init_sys_modes. */
1574 #endif
1575 #ifdef VMS
1576 init_vmsproc (); /* And this too. */
1577 #endif /* VMS */
1578 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1579 #if defined (HAVE_X_WINDOWS) || defined (WINDOWSNT)
1580 init_xfns ();
1581 #endif /* HAVE_X_WINDOWS */
1582 init_fns ();
1583 init_xdisp ();
1584 init_macros ();
1585 init_editfns ();
1586 init_floatfns ();
1587 #ifdef VMS
1588 init_vmsfns ();
1589 #endif /* VMS */
1590 init_process ();
1591 #ifdef HAVE_SOUND
1592 init_sound ();
1593 #endif
1594 init_window ();
1596 if (!initialized)
1598 char *file;
1599 /* Handle -l loadup, args passed by Makefile. */
1600 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1601 Vtop_level = Fcons (intern ("load"),
1602 Fcons (build_string (file), Qnil));
1603 /* Unless next switch is -nl, load "loadup.el" first thing. */
1604 if (! no_loadup)
1605 Vtop_level = Fcons (intern ("load"),
1606 Fcons (build_string ("loadup.el"), Qnil));
1609 if (initialized)
1611 #ifdef HAVE_TZSET
1613 /* If the execution TZ happens to be the same as the dump TZ,
1614 change it to some other value and then change it back,
1615 to force the underlying implementation to reload the TZ info.
1616 This is needed on implementations that load TZ info from files,
1617 since the TZ file contents may differ between dump and execution. */
1618 char *tz = getenv ("TZ");
1619 if (tz && !strcmp (tz, dump_tz))
1621 ++*tz;
1622 tzset ();
1623 --*tz;
1626 #endif
1629 /* Set up for profiling. This is known to work on FreeBSD and
1630 GNU/Linux. It might work on some other systems too. Give it a
1631 try and tell us if it works on your system. To compile for
1632 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1633 #if defined (__FreeBSD__) || defined (__linux)
1634 #ifdef PROFILING
1635 if (initialized)
1637 extern void _mcleanup ();
1638 extern char etext;
1639 extern void safe_bcopy ();
1640 extern void dump_opcode_frequencies ();
1642 atexit (_mcleanup);
1643 /* This uses safe_bcopy because that function comes first in the
1644 Emacs executable. It might be better to use something that
1645 gives the start of the text segment, but start_of_text is not
1646 defined on all systems now. */
1647 monstartup (safe_bcopy, &etext);
1649 else
1650 moncontrol (0);
1651 #endif
1652 #endif
1654 initialized = 1;
1656 #ifdef LOCALTIME_CACHE
1657 /* Some versions of localtime have a bug. They cache the value of the time
1658 zone rather than looking it up every time. Since localtime() is
1659 called to bolt the undumping time into the undumped emacs, this
1660 results in localtime ignoring the TZ environment variable.
1661 This flushes the new TZ value into localtime. */
1662 tzset ();
1663 #endif /* defined (LOCALTIME_CACHE) */
1665 /* Enter editor command loop. This never returns. */
1666 Frecursive_edit ();
1667 /* NOTREACHED */
1668 return 0;
1671 /* Sort the args so we can find the most important ones
1672 at the beginning of argv. */
1674 /* First, here's a table of all the standard options. */
1676 struct standard_args
1678 char *name;
1679 char *longname;
1680 int priority;
1681 int nargs;
1684 struct standard_args standard_args[] =
1686 { "-version", "--version", 150, 0 },
1687 #ifdef HAVE_SHM
1688 { "-nl", "--no-shared-memory", 140, 0 },
1689 #endif
1690 #ifdef VMS
1691 { "-map", "--map-data", 130, 0 },
1692 #endif
1693 { "-t", "--terminal", 120, 1 },
1694 { "-nw", "--no-window-system", 110, 0 },
1695 { "-nw", "--no-windows", 110, 0 },
1696 { "-batch", "--batch", 100, 0 },
1697 { "-script", "--script", 100, 1 },
1698 { "-help", "--help", 90, 0 },
1699 { "-no-unibyte", "--no-unibyte", 83, 0 },
1700 { "-multibyte", "--multibyte", 82, 0 },
1701 { "-unibyte", "--unibyte", 81, 0 },
1702 { "-no-multibyte", "--no-multibyte", 80, 0 },
1703 { "-nl", "--no-loadup", 70, 0 },
1704 /* -d must come last before the options handled in startup.el. */
1705 { "-d", "--display", 60, 1 },
1706 { "-display", 0, 60, 1 },
1707 /* Now for the options handled in startup.el. */
1708 { "-q", "--no-init-file", 50, 0 },
1709 { "-no-init-file", 0, 50, 0 },
1710 { "-no-site-file", "--no-site-file", 40, 0 },
1711 { "-no-splash", "--no-splash", 40, 0 },
1712 { "-u", "--user", 30, 1 },
1713 { "-user", 0, 30, 1 },
1714 { "-debug-init", "--debug-init", 20, 0 },
1715 { "-i", "--icon-type", 15, 0 },
1716 { "-itype", 0, 15, 0 },
1717 { "-iconic", "--iconic", 15, 0 },
1718 { "-bg", "--background-color", 10, 1 },
1719 { "-background", 0, 10, 1 },
1720 { "-fg", "--foreground-color", 10, 1 },
1721 { "-foreground", 0, 10, 1 },
1722 { "-bd", "--border-color", 10, 1 },
1723 { "-bw", "--border-width", 10, 1 },
1724 { "-ib", "--internal-border", 10, 1 },
1725 { "-ms", "--mouse-color", 10, 1 },
1726 { "-cr", "--cursor-color", 10, 1 },
1727 { "-fn", "--font", 10, 1 },
1728 { "-font", 0, 10, 1 },
1729 { "-fs", "--fullscreen", 10, 0 },
1730 { "-fw", "--fullwidth", 10, 0 },
1731 { "-fh", "--fullheight", 10, 0 },
1732 { "-g", "--geometry", 10, 1 },
1733 { "-geometry", 0, 10, 1 },
1734 { "-T", "--title", 10, 1 },
1735 { "-title", 0, 10, 1 },
1736 { "-name", "--name", 10, 1 },
1737 { "-xrm", "--xrm", 10, 1 },
1738 { "-r", "--reverse-video", 5, 0 },
1739 { "-rv", 0, 5, 0 },
1740 { "-reverse", 0, 5, 0 },
1741 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1742 { "-vb", "--vertical-scroll-bars", 5, 0 },
1743 { "-color", "--color", 5, 0},
1744 /* These have the same priority as ordinary file name args,
1745 so they are not reordered with respect to those. */
1746 { "-L", "--directory", 0, 1 },
1747 { "-directory", 0, 0, 1 },
1748 { "-l", "--load", 0, 1 },
1749 { "-load", 0, 0, 1 },
1750 { "-f", "--funcall", 0, 1 },
1751 { "-funcall", 0, 0, 1 },
1752 { "-eval", "--eval", 0, 1 },
1753 { "-execute", "--execute", 0, 1 },
1754 { "-find-file", "--find-file", 0, 1 },
1755 { "-visit", "--visit", 0, 1 },
1756 { "-file", "--file", 0, 1 },
1757 { "-insert", "--insert", 0, 1 },
1758 /* This should be processed after ordinary file name args and the like. */
1759 { "-kill", "--kill", -10, 0 },
1762 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1763 so that the highest priority ones come first.
1764 Do not change the order of elements of equal priority.
1765 If an option takes an argument, keep it and its argument together.
1767 If an option that takes no argument appears more
1768 than once, eliminate all but one copy of it. */
1770 static void
1771 sort_args (argc, argv)
1772 int argc;
1773 char **argv;
1775 char **new = (char **) xmalloc (sizeof (char *) * argc);
1776 /* For each element of argv,
1777 the corresponding element of options is:
1778 0 for an option that takes no arguments,
1779 1 for an option that takes one argument, etc.
1780 -1 for an ordinary non-option argument. */
1781 int *options = (int *) xmalloc (sizeof (int) * argc);
1782 int *priority = (int *) xmalloc (sizeof (int) * argc);
1783 int to = 1;
1784 int incoming_used = 1;
1785 int from;
1786 int i;
1788 /* Categorize all the options,
1789 and figure out which argv elts are option arguments. */
1790 for (from = 1; from < argc; from++)
1792 options[from] = -1;
1793 priority[from] = 0;
1794 if (argv[from][0] == '-')
1796 int match, thislen;
1797 char *equals;
1799 /* If we have found "--", don't consider
1800 any more arguments as options. */
1801 if (argv[from][1] == '-' && argv[from][2] == 0)
1803 /* Leave the "--", and everything following it, at the end. */
1804 for (; from < argc; from++)
1806 priority[from] = -100;
1807 options[from] = -1;
1809 break;
1812 /* Look for a match with a known old-fashioned option. */
1813 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1814 if (!strcmp (argv[from], standard_args[i].name))
1816 options[from] = standard_args[i].nargs;
1817 priority[from] = standard_args[i].priority;
1818 if (from + standard_args[i].nargs >= argc)
1819 fatal ("Option `%s' requires an argument\n", argv[from]);
1820 from += standard_args[i].nargs;
1821 goto done;
1824 /* Look for a match with a known long option.
1825 MATCH is -1 if no match so far, -2 if two or more matches so far,
1826 >= 0 (the table index of the match) if just one match so far. */
1827 if (argv[from][1] == '-')
1829 match = -1;
1830 thislen = strlen (argv[from]);
1831 equals = index (argv[from], '=');
1832 if (equals != 0)
1833 thislen = equals - argv[from];
1835 for (i = 0;
1836 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1837 if (standard_args[i].longname
1838 && !strncmp (argv[from], standard_args[i].longname,
1839 thislen))
1841 if (match == -1)
1842 match = i;
1843 else
1844 match = -2;
1847 /* If we found exactly one match, use that. */
1848 if (match >= 0)
1850 options[from] = standard_args[match].nargs;
1851 priority[from] = standard_args[match].priority;
1852 /* If --OPTION=VALUE syntax is used,
1853 this option uses just one argv element. */
1854 if (equals != 0)
1855 options[from] = 0;
1856 if (from + options[from] >= argc)
1857 fatal ("Option `%s' requires an argument\n", argv[from]);
1858 from += options[from];
1861 done: ;
1865 /* Copy the arguments, in order of decreasing priority, to NEW. */
1866 new[0] = argv[0];
1867 while (incoming_used < argc)
1869 int best = -1;
1870 int best_priority = -9999;
1872 /* Find the highest priority remaining option.
1873 If several have equal priority, take the first of them. */
1874 for (from = 1; from < argc; from++)
1876 if (argv[from] != 0 && priority[from] > best_priority)
1878 best_priority = priority[from];
1879 best = from;
1881 /* Skip option arguments--they are tied to the options. */
1882 if (options[from] > 0)
1883 from += options[from];
1886 if (best < 0)
1887 abort ();
1889 /* Copy the highest priority remaining option, with its args, to NEW.
1890 Unless it is a duplicate of the previous one. */
1891 if (! (options[best] == 0
1892 && ! strcmp (new[to - 1], argv[best])))
1894 new[to++] = argv[best];
1895 for (i = 0; i < options[best]; i++)
1896 new[to++] = argv[best + i + 1];
1899 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
1901 /* Clear out this option in ARGV. */
1902 argv[best] = 0;
1903 for (i = 0; i < options[best]; i++)
1904 argv[best + i + 1] = 0;
1907 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1908 while (to < argc)
1909 new[to++] = 0;
1911 bcopy (new, argv, sizeof (char *) * argc);
1913 free (options);
1914 free (new);
1915 free (priority);
1918 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1919 doc: /* Exit the Emacs job and kill it.
1920 If ARG is an integer, return ARG as the exit program code.
1921 If ARG is a string, stuff it as keyboard input.
1923 The value of `kill-emacs-hook', if not void,
1924 is a list of functions (of no args),
1925 all of which are called before Emacs is actually killed. */)
1926 (arg)
1927 Lisp_Object arg;
1929 struct gcpro gcpro1;
1931 GCPRO1 (arg);
1933 if (feof (stdin))
1934 arg = Qt;
1936 if (!NILP (Vrun_hooks) && !noninteractive)
1937 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
1939 UNGCPRO;
1941 /* Is it really necessary to do this deassign
1942 when we are going to exit anyway? */
1943 /* #ifdef VMS
1944 stop_vms_input ();
1945 #endif */
1947 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
1949 /* If we have an auto-save list file,
1950 kill it because we are exiting Emacs deliberately (not crashing).
1951 Do it after shut_down_emacs, which does an auto-save. */
1952 if (STRINGP (Vauto_save_list_file_name))
1953 unlink (SDATA (Vauto_save_list_file_name));
1955 exit (INTEGERP (arg) ? XINT (arg)
1956 #ifdef VMS
1958 #else
1960 #endif
1962 /* NOTREACHED */
1966 /* Perform an orderly shutdown of Emacs. Autosave any modified
1967 buffers, kill any child processes, clean up the terminal modes (if
1968 we're in the foreground), and other stuff like that. Don't perform
1969 any redisplay; this may be called when Emacs is shutting down in
1970 the background, or after its X connection has died.
1972 If SIG is a signal number, print a message for it.
1974 This is called by fatal signal handlers, X protocol error handlers,
1975 and Fkill_emacs. */
1977 void
1978 shut_down_emacs (sig, no_x, stuff)
1979 int sig, no_x;
1980 Lisp_Object stuff;
1982 /* Prevent running of hooks from now on. */
1983 Vrun_hooks = Qnil;
1985 /* If we are controlling the terminal, reset terminal modes. */
1986 #ifdef EMACS_HAVE_TTY_PGRP
1988 int pgrp = EMACS_GETPGRP (0);
1990 int tpgrp;
1991 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
1992 && tpgrp == pgrp)
1994 fflush (stdout);
1995 reset_sys_modes ();
1996 if (sig && sig != SIGTERM)
1997 fprintf (stderr, "Fatal error (%d).", sig);
2000 #else
2001 fflush (stdout);
2002 reset_sys_modes ();
2003 #endif
2005 stuff_buffered_input (stuff);
2007 kill_buffer_processes (Qnil);
2008 Fdo_auto_save (Qt, Qnil);
2010 #ifdef CLASH_DETECTION
2011 unlock_all_files ();
2012 #endif
2014 #ifdef VMS
2015 kill_vms_processes ();
2016 #endif
2018 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2019 #ifdef HAVE_X_WINDOWS
2020 /* It's not safe to call intern here. Maybe we are crashing. */
2021 if (!noninteractive && SYMBOLP (Vwindow_system)
2022 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1
2023 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x'
2024 && ! no_x)
2025 Fx_close_current_connection ();
2026 #endif /* HAVE_X_WINDOWS */
2027 #endif
2029 #ifdef SIGIO
2030 /* There is a tendency for a SIGIO signal to arrive within exit,
2031 and cause a SIGHUP because the input descriptor is already closed. */
2032 unrequest_sigio ();
2033 signal (SIGIO, SIG_IGN);
2034 #endif
2036 #ifdef WINDOWSNT
2037 term_ntproc ();
2038 #endif
2040 /* Do this only if terminating normally, we want glyph matrices
2041 etc. in a core dump. */
2042 if (sig == 0 || sig == SIGTERM)
2044 check_glyph_memory ();
2045 check_message_stack ();
2048 #ifdef MSDOS
2049 dos_cleanup ();
2050 #endif
2055 #ifndef CANNOT_DUMP
2057 #ifdef HAVE_SHM
2059 DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
2060 doc: /* Dump current state of Emacs into data file FILENAME.
2061 This function exists on systems that use HAVE_SHM. */)
2062 (filename)
2063 Lisp_Object filename;
2065 extern char my_edata[];
2066 Lisp_Object tem;
2068 check_pure_size ();
2069 CHECK_STRING (filename);
2070 filename = Fexpand_file_name (filename, Qnil);
2072 tem = Vpurify_flag;
2073 Vpurify_flag = Qnil;
2075 fflush (stdout);
2076 /* Tell malloc where start of impure now is. */
2077 /* Also arrange for warnings when nearly out of space. */
2078 #ifndef SYSTEM_MALLOC
2079 memory_warnings (my_edata, malloc_warning);
2080 #endif
2081 map_out_data (SDATA (filename));
2083 Vpurify_flag = tem;
2085 return Qnil;
2088 #else /* not HAVE_SHM */
2090 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2091 doc: /* Dump current state of Emacs into executable file FILENAME.
2092 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2093 This is used in the file `loadup.el' when building Emacs.
2095 You must run Emacs in batch mode in order to dump it. */)
2096 (filename, symfile)
2097 Lisp_Object filename, symfile;
2099 extern char my_edata[];
2100 Lisp_Object tem;
2101 Lisp_Object symbol;
2102 int count = SPECPDL_INDEX ();
2104 check_pure_size ();
2106 if (! noninteractive)
2107 error ("Dumping Emacs works only in batch mode");
2109 /* Bind `command-line-processed' to nil before dumping,
2110 so that the dumped Emacs will process its command line
2111 and set up to work with X windows if appropriate. */
2112 symbol = intern ("command-line-processed");
2113 specbind (symbol, Qnil);
2115 CHECK_STRING (filename);
2116 filename = Fexpand_file_name (filename, Qnil);
2117 if (!NILP (symfile))
2119 CHECK_STRING (symfile);
2120 if (SCHARS (symfile))
2121 symfile = Fexpand_file_name (symfile, Qnil);
2124 tem = Vpurify_flag;
2125 Vpurify_flag = Qnil;
2127 #ifdef HAVE_TZSET
2128 set_time_zone_rule (dump_tz);
2129 #ifndef LOCALTIME_CACHE
2130 /* Force a tz reload, since set_time_zone_rule doesn't. */
2131 tzset ();
2132 #endif
2133 #endif
2135 fflush (stdout);
2136 #ifdef VMS
2137 mapout_data (SDATA (filename));
2138 #else
2139 /* Tell malloc where start of impure now is. */
2140 /* Also arrange for warnings when nearly out of space. */
2141 #ifndef SYSTEM_MALLOC
2142 #ifndef WINDOWSNT
2143 /* On Windows, this was done before dumping, and that once suffices.
2144 Meanwhile, my_edata is not valid on Windows. */
2145 memory_warnings (my_edata, malloc_warning);
2146 #endif /* not WINDOWSNT */
2147 #endif
2148 #ifdef DOUG_LEA_MALLOC
2149 malloc_state_ptr = malloc_get_state ();
2150 #endif
2152 #ifdef USE_MMAP_FOR_BUFFERS
2153 mmap_set_vars (0);
2154 #endif
2155 unexec (SDATA (filename),
2156 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
2157 #ifdef USE_MMAP_FOR_BUFFERS
2158 mmap_set_vars (1);
2159 #endif
2160 #ifdef DOUG_LEA_MALLOC
2161 free (malloc_state_ptr);
2162 #endif
2163 #endif /* not VMS */
2165 Vpurify_flag = tem;
2167 return unbind_to (count, Qnil);
2170 #endif /* not HAVE_SHM */
2172 #endif /* not CANNOT_DUMP */
2174 #if HAVE_SETLOCALE
2175 /* Recover from setlocale (LC_ALL, ""). */
2176 void
2177 fixup_locale ()
2179 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2180 so that numbers are read and printed properly for Emacs Lisp. */
2181 setlocale (LC_NUMERIC, "C");
2184 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2185 DESIRED_LOCALE. */
2186 static void
2187 synchronize_locale (category, plocale, desired_locale)
2188 int category;
2189 Lisp_Object *plocale;
2190 Lisp_Object desired_locale;
2192 if (! EQ (*plocale, desired_locale))
2194 *plocale = desired_locale;
2195 setlocale (category, (STRINGP (desired_locale)
2196 ? (char *)(SDATA (desired_locale))
2197 : ""));
2201 /* Set system time locale to match Vsystem_time_locale, if possible. */
2202 void
2203 synchronize_system_time_locale ()
2205 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2206 Vsystem_time_locale);
2209 /* Set system messages locale to match Vsystem_messages_locale, if
2210 possible. */
2211 void
2212 synchronize_system_messages_locale ()
2214 #ifdef LC_MESSAGES
2215 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2216 Vsystem_messages_locale);
2217 #endif
2219 #endif /* HAVE_SETLOCALE */
2221 #ifndef SEPCHAR
2222 #define SEPCHAR ':'
2223 #endif
2225 Lisp_Object
2226 decode_env_path (evarname, defalt)
2227 char *evarname, *defalt;
2229 register char *path, *p;
2230 Lisp_Object lpath, element, tem;
2232 /* It's okay to use getenv here, because this function is only used
2233 to initialize variables when Emacs starts up, and isn't called
2234 after that. */
2235 if (evarname != 0)
2236 path = (char *) getenv (evarname);
2237 else
2238 path = 0;
2239 if (!path)
2240 path = defalt;
2241 #ifdef DOS_NT
2242 /* Ensure values from the environment use the proper directory separator. */
2243 if (path)
2245 p = alloca (strlen (path) + 1);
2246 strcpy (p, path);
2247 path = p;
2249 if ('/' == DIRECTORY_SEP)
2250 dostounix_filename (path);
2251 else
2252 unixtodos_filename (path);
2254 #endif
2255 lpath = Qnil;
2256 while (1)
2258 p = index (path, SEPCHAR);
2259 if (!p) p = path + strlen (path);
2260 element = (p - path ? make_string (path, p - path)
2261 : build_string ("."));
2263 /* Add /: to the front of the name
2264 if it would otherwise be treated as magic. */
2265 tem = Ffind_file_name_handler (element, Qt);
2267 /* However, if the handler says "I'm safe",
2268 don't bother adding /:. */
2269 if (SYMBOLP (tem))
2271 Lisp_Object prop;
2272 prop = Fget (tem, intern ("safe-magic"));
2273 if (! NILP (prop))
2274 tem = Qnil;
2277 if (! NILP (tem))
2278 element = concat2 (build_string ("/:"), element);
2280 lpath = Fcons (element, lpath);
2281 if (*p)
2282 path = p + 1;
2283 else
2284 break;
2286 return Fnreverse (lpath);
2289 void
2290 syms_of_emacs ()
2292 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2293 staticpro (&Qfile_name_handler_alist);
2295 #ifndef CANNOT_DUMP
2296 #ifdef HAVE_SHM
2297 defsubr (&Sdump_emacs_data);
2298 #else
2299 defsubr (&Sdump_emacs);
2300 #endif
2301 #endif
2303 defsubr (&Skill_emacs);
2305 defsubr (&Sinvocation_name);
2306 defsubr (&Sinvocation_directory);
2308 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2309 doc: /* Args passed by shell to Emacs, as a list of strings.
2310 Many arguments are deleted from the list as they are processed. */);
2312 DEFVAR_LISP ("system-type", &Vsystem_type,
2313 doc: /* Value is symbol indicating type of operating system you are using. */);
2314 Vsystem_type = intern (SYSTEM_TYPE);
2316 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
2317 doc: /* Value is string indicating configuration Emacs was built for.
2318 On MS-Windows, the value reflects the OS flavor and version on which
2319 Emacs is running. */);
2320 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2322 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
2323 doc: /* String containing the configuration options Emacs was built with. */);
2324 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2326 DEFVAR_BOOL ("noninteractive", &noninteractive1,
2327 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2329 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
2330 doc: /* Hook to be run when kill-emacs is called.
2331 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2332 in other similar situations), functions placed on this hook should not
2333 expect to be able to interact with the user. To ask for confirmation,
2334 see `kill-emacs-query-functions' instead.
2336 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2337 Vkill_emacs_hook = Qnil;
2339 empty_string = build_string ("");
2340 staticpro (&empty_string);
2342 #ifdef SIGUSR1
2343 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook,
2344 doc: /* Hook to be run whenever emacs receives a USR1 signal. */);
2345 Vsignal_USR1_hook = Qnil;
2346 #ifdef SIGUSR2
2347 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook,
2348 doc: /* Hook to be run whenever emacs receives a USR2 signal. */);
2349 Vsignal_USR2_hook = Qnil;
2350 #endif
2351 #endif
2354 DEFVAR_INT ("emacs-priority", &emacs_priority,
2355 doc: /* Priority for Emacs to run at.
2356 This value is effective only if set before Emacs is dumped,
2357 and only if the Emacs executable is installed with setuid to permit
2358 it to change priority. (Emacs sets its uid back to the real uid.)
2359 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2360 before you compile Emacs, to enable the code for this feature. */);
2361 emacs_priority = 0;
2363 DEFVAR_LISP ("path-separator", &Vpath_separator,
2364 doc: /* The directory separator in search paths, as a string. */);
2366 char c = SEPCHAR;
2367 Vpath_separator = make_string (&c, 1);
2370 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
2371 doc: /* The program name that was used to run Emacs.
2372 Any directory names are omitted. */);
2374 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
2375 doc: /* The directory in which the Emacs executable was found, to run it.
2376 The value is nil if that directory's name is not known. */);
2378 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
2379 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2380 This is non-nil when we can't find those directories in their standard
2381 installed locations, but we can find them
2382 near where the Emacs executable was found. */);
2383 Vinstallation_directory = Qnil;
2385 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
2386 doc: /* System locale for messages. */);
2387 Vsystem_messages_locale = Qnil;
2389 DEFVAR_LISP ("previous-system-messages-locale",
2390 &Vprevious_system_messages_locale,
2391 doc: /* Most recently used system locale for messages. */);
2392 Vprevious_system_messages_locale = Qnil;
2394 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
2395 doc: /* System locale for time. */);
2396 Vsystem_time_locale = Qnil;
2398 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
2399 doc: /* Most recently used system locale for time. */);
2400 Vprevious_system_time_locale = Qnil;