1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
36 #include <sys/ioctl.h>
41 #include "intervals.h"
44 #include "blockinput.h"
45 #include "syssignal.h"
50 #include <sys/resource.h>
57 extern void malloc_warning ();
58 extern void set_time_zone_rule ();
59 extern char *index ();
60 extern char *strerror ();
62 /* Command line args from shell, as list of strings */
63 Lisp_Object Vcommand_line_args
;
65 /* The name under which Emacs was invoked, with any leading directory
67 Lisp_Object Vinvocation_name
;
69 /* The directory name from which Emacs was invoked. */
70 Lisp_Object Vinvocation_directory
;
72 /* The directory name in which to find subdirs such as lisp and etc.
73 nil means get them only from PATH_LOADSEARCH. */
74 Lisp_Object Vinstallation_directory
;
76 /* Hook run by `kill-emacs' before it does really anything. */
77 Lisp_Object Vkill_emacs_hook
;
79 /* Set nonzero after Emacs has started up the first time.
80 Prevents reinitialization of the Lisp world and keymaps
81 on subsequent starts. */
84 #ifdef DOUG_LEA_MALLOC
85 /* Preserves a pointer to the memory allocated that copies that
86 static data inside glibc's malloc. */
87 void *malloc_state_ptr
;
88 /* From glibc, a routine that returns a copy of the malloc internal state. */
89 extern void *malloc_get_state ();
90 /* From glibc, a routine that overwrites the malloc internal state. */
91 extern void malloc_set_state ();
94 /* Variable whose value is symbol giving operating system type. */
95 Lisp_Object Vsystem_type
;
97 /* Variable whose value is string giving configuration built for. */
98 Lisp_Object Vsystem_configuration
;
100 /* Variable whose value is string giving configuration options,
101 for use when reporting bugs. */
102 Lisp_Object Vsystem_configuration_options
;
104 Lisp_Object Qfile_name_handler_alist
;
106 /* If non-zero, emacs should not attempt to use an window-specific code,
107 but instead should use the virtual terminal under which it was started */
108 int inhibit_window_system
;
110 /* If nonzero, set Emacs to run at this priority. This is also used
111 in child_setup and sys_suspend to make sure subshells run at normal
112 priority; Those functions have their own extern declaration. */
115 /* If non-zero a filter or a sentinel is running. Tested to save the match
116 data on the first attempt to change it inside asynchronous code. */
117 int running_asynch_code
;
121 extern int inherited_pgroup
;
124 #ifdef HAVE_X_WINDOWS
125 /* If non-zero, -d was specified, meaning we're using some window system. */
129 /* An address near the bottom of the stack.
130 Tells GC how to save a copy of the stack. */
133 #ifdef HAVE_WINDOW_SYSTEM
134 extern Lisp_Object Vwindow_system
;
135 #endif /* HAVE_WINDOW_SYSTEM */
137 extern Lisp_Object Vauto_save_list_file_name
;
139 #ifdef USG_SHARED_LIBRARIES
140 /* If nonzero, this is the place to put the end of the writable segment
143 unsigned int bss_end
= 0;
146 /* Nonzero means running Emacs without interactive terminal. */
150 /* Value of Lisp variable `noninteractive'.
151 Normally same as C variable `noninteractive'
152 but nothing terrible happens if user sets this one. */
156 /* Save argv and argc. */
160 static void sort_args ();
162 /* Signal code for the fatal signal that was received */
163 int fatal_error_code
;
165 /* Nonzero if handling a fatal error already */
166 int fatal_error_in_progress
;
168 /* Handle bus errors, illegal instruction, etc. */
170 fatal_error_signal (sig
)
173 fatal_error_code
= sig
;
174 signal (sig
, SIG_DFL
);
176 TOTALLY_UNBLOCK_INPUT
;
178 /* If fatal error occurs in code below, avoid infinite recursion. */
179 if (! fatal_error_in_progress
)
181 fatal_error_in_progress
= 1;
183 shut_down_emacs (sig
, 0, Qnil
);
187 LIB$
STOP (SS$_ABORT
);
189 /* Signal the same code; this time it will really be fatal.
190 Remember that since we're in a signal handler, the signal we're
191 going to send is probably blocked, so we have to unblock it if we
192 want to really receive it. */
194 sigunblock (sigmask (fatal_error_code
));
196 kill (getpid (), fatal_error_code
);
202 /* Handler for SIGDANGER. */
204 memory_warning_signal (sig
)
207 signal (sig
, memory_warning_signal
);
209 malloc_warning ("Operating system warns that virtual memory is running low.\n");
211 /* It might be unsafe to call do_auto_save now. */
212 force_auto_save_soon ();
216 /* Code for dealing with Lisp access to the Unix command line */
219 init_cmdargs (argc
, argv
, skip_args
)
225 Lisp_Object name
, dir
, tem
;
226 int count
= specpdl_ptr
- specpdl
;
227 Lisp_Object raw_name
;
232 raw_name
= build_string (argv
[0]);
234 /* Add /: to the front of the name
235 if it would otherwise be treated as magic. */
236 tem
= Ffind_file_name_handler (raw_name
, Qt
);
238 raw_name
= concat2 (build_string ("/:"), raw_name
);
240 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
241 Vinvocation_directory
= Ffile_name_directory (raw_name
);
243 /* If we got no directory in argv[0], search PATH to find where
244 Emacs actually came from. */
245 if (NILP (Vinvocation_directory
))
248 int yes
= openp (Vexec_path
, Vinvocation_name
,
249 EXEC_SUFFIXES
, &found
, 1);
252 /* Add /: to the front of the name
253 if it would otherwise be treated as magic. */
254 tem
= Ffind_file_name_handler (found
, Qt
);
256 found
= concat2 (build_string ("/:"), found
);
257 Vinvocation_directory
= Ffile_name_directory (found
);
261 if (!NILP (Vinvocation_directory
)
262 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
263 /* Emacs was started with relative path, like ./emacs.
265 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
267 Vinstallation_directory
= Qnil
;
269 if (!NILP (Vinvocation_directory
))
271 dir
= Vinvocation_directory
;
272 name
= Fexpand_file_name (Vinvocation_name
, dir
);
275 Lisp_Object tem
, lib_src_exists
;
276 Lisp_Object etc_exists
, info_exists
;
278 /* See if dir contains subdirs for use by Emacs.
279 Check for the ones that would exist in a build directory,
280 not including lisp and info. */
281 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
282 lib_src_exists
= Ffile_exists_p (tem
);
285 /* MSDOS installations frequently remove lib-src, but we still
286 must set installation-directory, or else info won't find
287 its files (it uses the value of installation-directory). */
288 tem
= Fexpand_file_name (build_string ("info"), dir
);
289 info_exists
= Ffile_exists_p (tem
);
294 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
296 tem
= Fexpand_file_name (build_string ("etc"), dir
);
297 etc_exists
= Ffile_exists_p (tem
);
298 if (!NILP (etc_exists
))
300 Vinstallation_directory
301 = Ffile_name_as_directory (dir
);
306 /* See if dir's parent contains those subdirs. */
307 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
308 lib_src_exists
= Ffile_exists_p (tem
);
312 /* See the MSDOS commentary above. */
313 tem
= Fexpand_file_name (build_string ("../info"), dir
);
314 info_exists
= Ffile_exists_p (tem
);
319 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
321 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
322 etc_exists
= Ffile_exists_p (tem
);
323 if (!NILP (etc_exists
))
325 tem
= Fexpand_file_name (build_string (".."), dir
);
326 Vinstallation_directory
327 = Ffile_name_as_directory (tem
);
332 /* If the Emacs executable is actually a link,
333 next try the dir that the link points into. */
334 tem
= Ffile_symlink_p (name
);
337 name
= Fexpand_file_name (tem
, dir
);
338 dir
= Ffile_name_directory (name
);
345 Vcommand_line_args
= Qnil
;
347 for (i
= argc
- 1; i
>= 0; i
--)
349 if (i
== 0 || i
> skip_args
)
351 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
354 unbind_to (count
, Qnil
);
357 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
358 "Return the program name that was used to run Emacs.\n\
359 Any directory names are omitted.")
362 return Fcopy_sequence (Vinvocation_name
);
365 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
367 "Return the directory name in which the Emacs executable was located")
370 return Fcopy_sequence (Vinvocation_directory
);
375 #ifdef LINK_CRTL_SHARE
376 #ifdef SHARABLE_LIB_BUG
377 extern noshare
char **environ
;
378 #endif /* SHARABLE_LIB_BUG */
379 #endif /* LINK_CRTL_SHARE */
383 /* A valid but unlikely value for the TZ environment value.
384 It is OK (though a bit slower) if the user actually chooses this value. */
385 static char dump_tz
[] = "UtC0";
388 #ifndef ORDINARY_LINK
389 /* We don't include crtbegin.o and crtend.o in the link,
390 so these functions and variables might be missed.
391 Provide dummy definitions to avoid error.
392 (We don't have any real constructors or destructors.) */
394 #ifndef GCC_CTORS_IN_LIBC
397 __do_global_ctors_aux ()
401 /* Linux has a bug in its library; avoid an error. */
403 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
405 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
406 #endif /* GCC_CTORS_IN_LIBC */
409 #endif /* __GNUC__ */
410 #endif /* ORDINARY_LINK */
412 /* Test whether the next argument in ARGV matches SSTR or a prefix of
413 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
414 (the argument is supposed to have a value) store in *VALPTR either
415 the next argument or the portion of this one after the equal sign.
416 ARGV is read starting at position *SKIPPTR; this index is advanced
417 by the number of arguments used.
419 Too bad we can't just use getopt for all of this, but we don't have
420 enough information to do it right. */
423 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
436 /* Don't access argv[argc]; give up in advance. */
437 if (argc
<= *skipptr
+ 1)
440 arg
= argv
[*skipptr
+1];
443 if (strcmp (arg
, sstr
) == 0)
447 *valptr
= argv
[*skipptr
+2];
454 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
455 ? p
- arg
: strlen (arg
));
456 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
458 else if (valptr
== NULL
)
469 else if (argv
[*skipptr
+2] != NULL
)
471 *valptr
= argv
[*skipptr
+2];
482 main (argc
, argv
, envp
)
487 char stack_bottom_variable
;
491 #ifdef HAVE_SETRLIMIT
495 #ifdef LINUX_SBRK_BUG
499 #ifdef DOUG_LEA_MALLOC
502 malloc_set_state (malloc_state_ptr
);
503 free (malloc_state_ptr
);
508 sort_args (argc
, argv
);
510 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
513 tem
= Fsymbol_value (intern ("emacs-version"));
516 fprintf (stderr
, "Invalid value of `emacs-version'\n");
521 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
522 printf ("Copyright (C) 1996 Free Software Foundation, Inc.\n");
523 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
524 printf ("You may redistribute copies of Emacs\n");
525 printf ("under the terms of the GNU General Public License.\n");
526 printf ("For more information about these matters, ");
527 printf ("see the files named COPYING.\n");
532 /* Map in shared memory, if we are using that. */
534 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
537 /* The shared memory was just restored, which clobbered this. */
543 /* The shared memory was just restored, which clobbered this. */
550 extern int malloc_cookie
;
551 /* This helps out unexnext.c. */
553 if (malloc_jumpstart (malloc_cookie
) != 0)
554 printf ("malloc jumpstart failed!\n");
559 /* If -map specified, map the data file in */
562 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
566 #ifdef LINK_CRTL_SHARE
567 #ifdef SHARABLE_LIB_BUG
568 /* Bletcherous shared libraries! */
570 stdin
= fdopen (0, "r");
572 stdout
= fdopen (1, "w");
574 stderr
= fdopen (2, "w");
577 #endif /* SHARABLE_LIB_BUG */
578 #endif /* LINK_CRTL_SHARE */
581 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
582 /* Extend the stack space available. */
583 if (!getrlimit (RLIMIT_STACK
, &rlim
))
586 /* Approximate the amount regex.c needs, plus some more. */
587 newlim
= 800000 * sizeof (char *);
589 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
590 stack allocation routine for new process that the allocation
591 fails if stack limit is not on page boundary. So, round up the
592 new limit to page boundary. */
593 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
595 if (newlim
> rlim
.rlim_max
)
596 newlim
= rlim
.rlim_max
;
597 if (rlim
.rlim_cur
< newlim
)
598 rlim
.rlim_cur
= newlim
;
600 setrlimit (RLIMIT_STACK
, &rlim
);
602 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
604 /* Record (approximately) where the stack begins. */
605 stack_bottom
= &stack_bottom_variable
;
607 #ifdef RUN_TIME_REMAP
609 run_time_remap (argv
[0]);
612 #ifdef USG_SHARED_LIBRARIES
614 brk ((void *)bss_end
);
619 #ifndef SYSTEM_MALLOC
622 /* Arrange to get warning messages as memory fills up. */
623 memory_warnings (0, malloc_warning
);
625 /* Arrange to disable interrupt input while malloc and friends are
627 uninterrupt_malloc ();
629 #endif /* not SYSTEM_MALLOC */
632 /* We do all file input/output as binary files. When we need to translate
633 newlines, we do that manually. */
637 if (!isatty (fileno (stdin
)))
638 setmode (fileno (stdin
), O_BINARY
);
639 if (!isatty (fileno (stdout
)))
642 setmode (fileno (stdout
), O_BINARY
);
644 #else /* not __DJGPP__ >= 2 */
645 (stdin
)->_flag
&= ~_IOTEXT
;
646 (stdout
)->_flag
&= ~_IOTEXT
;
647 (stderr
)->_flag
&= ~_IOTEXT
;
648 #endif /* not __DJGPP__ >= 2 */
651 #ifdef SET_EMACS_PRIORITY
653 nice (emacs_priority
);
655 #endif /* SET_EMACS_PRIORITY */
657 #ifdef EXTRA_INITIALIZE
661 inhibit_window_system
= 0;
663 /* Handle the -t switch, which specifies filename to use as terminal */
666 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
671 result
= open (term
, O_RDWR
, 2 );
674 char *errstring
= strerror (errno
);
675 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
681 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
684 fprintf (stderr
, "Using %s\n", term
);
685 #ifdef HAVE_WINDOW_SYSTEM
686 inhibit_window_system
= 1; /* -t => -nw */
690 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
691 inhibit_window_system
= 1;
693 /* Handle the -batch switch, which means don't do interactive display. */
695 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
698 /* Handle the --help option, which gives a usage message.. */
699 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
702 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
703 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
704 [--version] [--no-site-file]\n\
705 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
706 [+linenum] file-to-visit [--kill]\n\
707 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
708 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
712 #ifdef HAVE_X_WINDOWS
713 /* Stupid kludge to catch command-line display spec. We can't
714 handle this argument entirely in window system dependent code
715 because we don't even know which window system dependent code
716 to run until we've recognized this argument. */
718 char *displayname
= 0;
720 int count_before
= skip_args
;
722 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
724 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
727 /* If we have the form --display=NAME,
728 convert it into -d name.
729 This requires inserting a new element into argv. */
730 if (displayname
!= 0 && skip_args
- count_before
== 1)
732 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
735 for (j
= 0; j
< count_before
+ 1; j
++)
737 new[count_before
+ 1] = "-d";
738 new[count_before
+ 2] = displayname
;
739 for (j
= count_before
+ 2; j
<argc
; j
++)
740 new[j
+ 1] = argv
[j
];
744 /* Change --display to -d, when its arg is separate. */
745 else if (displayname
!= 0 && skip_args
> count_before
746 && argv
[count_before
+ 1][1] == '-')
747 argv
[count_before
+ 1] = "-d";
749 /* Don't actually discard this arg. */
750 skip_args
= count_before
;
754 if (! noninteractive
)
759 inherited_pgroup
= EMACS_GETPGRP (0);
760 setpgrp (0, getpid ());
763 #if defined (USG5) && defined (INTERRUPT_INPUT)
773 /* Don't catch SIGHUP if dumping. */
780 sigblock (sigmask (SIGHUP
));
781 /* In --batch mode, don't catch SIGHUP if already ignored.
782 That makes nohup work. */
784 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
785 signal (SIGHUP
, fatal_error_signal
);
786 sigunblock (sigmask (SIGHUP
));
791 ! noninteractive
|| initialized
797 /* Don't catch these signals in batch mode if dumping.
798 On some machines, this sets static data that would make
799 signal fail to work right when the dumped Emacs is run. */
800 signal (SIGQUIT
, fatal_error_signal
);
801 signal (SIGILL
, fatal_error_signal
);
802 signal (SIGTRAP
, fatal_error_signal
);
804 signal (SIGABRT
, fatal_error_signal
);
807 signal (SIGHWE
, fatal_error_signal
);
810 signal (SIGPRE
, fatal_error_signal
);
813 signal (SIGORE
, fatal_error_signal
);
816 signal (SIGUME
, fatal_error_signal
);
819 signal (SIGDLK
, fatal_error_signal
);
822 signal (SIGCPULIM
, fatal_error_signal
);
825 /* This is missing on some systems - OS/2, for example. */
826 signal (SIGIOT
, fatal_error_signal
);
829 signal (SIGEMT
, fatal_error_signal
);
831 signal (SIGFPE
, fatal_error_signal
);
833 signal (SIGBUS
, fatal_error_signal
);
835 signal (SIGSEGV
, fatal_error_signal
);
837 signal (SIGSYS
, fatal_error_signal
);
839 signal (SIGTERM
, fatal_error_signal
);
841 signal (SIGXCPU
, fatal_error_signal
);
844 signal (SIGXFSZ
, fatal_error_signal
);
848 /* This just means available memory is getting low. */
849 signal (SIGDANGER
, memory_warning_signal
);
853 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
854 signal (SIGXCPU
, fatal_error_signal
);
856 signal (SIGIOINT
, fatal_error_signal
);
858 signal (SIGGRANT
, fatal_error_signal
);
859 signal (SIGRETRACT
, fatal_error_signal
);
860 signal (SIGSOUND
, fatal_error_signal
);
861 signal (SIGMSG
, fatal_error_signal
);
865 noninteractive1
= noninteractive
;
867 /* Perform basic initializations (not merely interning symbols) */
874 init_charset_once ();
876 init_syntax_once (); /* Create standard syntax table. */
877 init_category_once (); /* Create standard category table. */
878 /* Must be done before init_buffer */
879 init_casetab_once ();
880 init_buffer_once (); /* Create buffer table and some buffers */
881 init_minibuf_once (); /* Create list of minibuffers */
882 /* Must precede init_window_once */
883 init_window_once (); /* Init the window system */
889 running_asynch_code
= 0;
892 /* Call early 'cause init_environment needs it. */
894 /* Set defaults for several environment variables. */
896 init_environment (argc
, argv
, skip_args
);
902 /* Initialize environment from registry settings. */
904 init_ntproc (); /* must precede init_editfns */
907 /* egetenv is a pretty low-level facility, which may get called in
908 many circumstances; it seems flimsy to put off initializing it
909 until calling init_callproc. */
910 set_process_environment ();
911 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
912 if this is not done. Do it after set_process_environment so that we
913 don't pollute Vprocess_environment. */
918 init_buffer (); /* Init default directory of main buffer */
920 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
921 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
925 /* Erase any pre-dump messages in the message log, to avoid confusion */
926 Lisp_Object old_log_max
;
927 old_log_max
= Vmessage_log_max
;
928 XSETFASTINT (Vmessage_log_max
, 0);
929 message_dolog ("", 0, 1);
930 Vmessage_log_max
= old_log_max
;
933 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
939 init_vms_input ();/* init_display calls get_frame_size, that needs this */
941 init_display (); /* Determine terminal type. init_sys_modes uses results */
943 init_keyboard (); /* This too must precede init_sys_modes */
945 init_vmsproc (); /* And this too. */
947 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
951 #ifdef LISP_FLOAT_TYPE
958 #ifdef CLASH_DETECTION
960 #endif /* CLASH_DETECTION */
962 /* Intern the names of all standard functions and variables; define standard keys */
966 /* The basic levels of Lisp must come first */
967 /* And data must come first of all
968 for the sake of symbols like error-message */
981 syms_of_casefiddle ();
988 #ifndef NO_DIR_LIBRARY
990 #endif /* not NO_DIR_LIBRARY */
996 syms_of_coding (); /* This should be after syms_of_fileio. */
997 #ifdef CLASH_DETECTION
999 #endif /* CLASH_DETECTION */
1002 syms_of_keyboard ();
1007 syms_of_mocklisp ();
1015 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1016 syms_of_textprop ();
1022 #endif /* WINDOWSNT */
1025 #ifdef HAVE_X_WINDOWS
1032 #endif /* HAVE_X_WINDOWS */
1042 syms_of_w32faces ();
1043 syms_of_w32select ();
1045 #endif /* HAVE_NTGUI */
1055 keys_of_casefiddle ();
1058 keys_of_keyboard ();
1069 /* Handle -l loadup-and-dump, args passed by Makefile. */
1070 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1071 Vtop_level
= Fcons (intern ("load"),
1072 Fcons (build_string (file
), Qnil
));
1074 /* Unless next switch is -nl, load "loadup.el" first thing. */
1075 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
1076 Vtop_level
= Fcons (intern ("load"),
1077 Fcons (build_string ("loadup.el"), Qnil
));
1078 #endif /* CANNOT_DUMP */
1085 /* If the execution TZ happens to be the same as the dump TZ,
1086 change it to some other value and then change it back,
1087 to force the underlying implementation to reload the TZ info.
1088 This is needed on implementations that load TZ info from files,
1089 since the TZ file contents may differ between dump and execution. */
1090 char *tz
= getenv ("TZ");
1091 if (tz
&& !strcmp (tz
, dump_tz
))
1103 #ifdef LOCALTIME_CACHE
1104 /* Some versions of localtime have a bug. They cache the value of the time
1105 zone rather than looking it up every time. Since localtime() is
1106 called to bolt the undumping time into the undumped emacs, this
1107 results in localtime ignoring the TZ environment variable.
1108 This flushes the new TZ value into localtime. */
1110 #endif /* defined (LOCALTIME_CACHE) */
1112 /* Enter editor command loop. This never returns. */
1117 /* Sort the args so we can find the most important ones
1118 at the beginning of argv. */
1120 /* First, here's a table of all the standard options. */
1122 struct standard_args
1130 struct standard_args standard_args
[] =
1132 { "-version", "--version", 110, 0 },
1133 { "-help", "--help", 110, 0 },
1134 { "-nl", "--no-shared-memory", 100, 0 },
1136 { "-map", "--map-data", 100, 0 },
1138 { "-t", "--terminal", 90, 1 },
1139 { "-d", "--display", 80, 1 },
1140 { "-display", 0, 80, 1 },
1141 { "-nw", "--no-windows", 70, 0 },
1142 { "-batch", "--batch", 60, 0 },
1143 { "-q", "--no-init-file", 50, 0 },
1144 { "-no-init-file", 0, 50, 0 },
1145 { "-no-site-file", "--no-site-file", 40, 0 },
1146 { "-u", "--user", 30, 1 },
1147 { "-user", 0, 30, 1 },
1148 { "-debug-init", "--debug-init", 20, 0 },
1149 { "-i", "--icon-type", 15, 0 },
1150 { "-itype", 0, 15, 0 },
1151 { "-iconic", "--iconic", 15, 0 },
1152 { "-bg", "--background-color", 10, 1 },
1153 { "-background", 0, 10, 1 },
1154 { "-fg", "--foreground-color", 10, 1 },
1155 { "-foreground", 0, 10, 1 },
1156 { "-bd", "--border-color", 10, 1 },
1157 { "-bw", "--border-width", 10, 1 },
1158 { "-ib", "--internal-border", 10, 1 },
1159 { "-ms", "--mouse-color", 10, 1 },
1160 { "-cr", "--cursor-color", 10, 1 },
1161 { "-fn", "--font", 10, 1 },
1162 { "-font", 0, 10, 1 },
1163 { "-g", "--geometry", 10, 1 },
1164 { "-geometry", 0, 10, 1 },
1165 { "-T", "--title", 10, 1 },
1166 { "-title", 0, 10, 1 },
1167 { "-name", "--name", 10, 1 },
1168 { "-xrm", "--xrm", 10, 1 },
1169 { "-r", "--reverse-video", 5, 0 },
1171 { "-reverse", 0, 5, 0 },
1172 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1173 { "-vb", "--vertical-scroll-bars", 5, 0 },
1174 /* These have the same priority as ordinary file name args,
1175 so they are not reordered with respect to those. */
1176 { "-L", "--directory", 0, 1 },
1177 { "-directory", 0, 0, 1 },
1178 { "-l", "--load", 0, 1 },
1179 { "-load", 0, 0, 1 },
1180 { "-f", "--funcall", 0, 1 },
1181 { "-funcall", 0, 0, 1 },
1182 { "-eval", "--eval", 0, 1 },
1183 { "-find-file", "--find-file", 0, 1 },
1184 { "-visit", "--visit", 0, 1 },
1185 { "-insert", "--insert", 0, 1 },
1186 /* This should be processed after ordinary file name args and the like. */
1187 { "-kill", "--kill", -10, 0 },
1190 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1191 so that the highest priority ones come first.
1192 Do not change the order of elements of equal priority.
1193 If an option takes an argument, keep it and its argument together. */
1196 sort_args (argc
, argv
)
1200 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1201 /* For each element of argv,
1202 the corresponding element of options is:
1203 0 for an option that takes no arguments,
1204 1 for an option that takes one argument, etc.
1205 -1 for an ordinary non-option argument. */
1206 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1207 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1211 int end_of_options
= argc
;
1213 /* Categorize all the options,
1214 and figure out which argv elts are option arguments. */
1215 for (from
= 1; from
< argc
; from
++)
1219 if (argv
[from
][0] == '-')
1224 /* If we have found "--", don't consider
1225 any more arguments as options. */
1226 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1228 /* Leave the "--", and everything following it, at the end. */
1229 for (; from
< argc
; from
++)
1231 priority
[from
] = -100;
1237 /* Look for a match with a known old-fashioned option. */
1238 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1239 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1241 options
[from
] = standard_args
[i
].nargs
;
1242 priority
[from
] = standard_args
[i
].priority
;
1243 if (from
+ standard_args
[i
].nargs
>= argc
)
1244 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1245 from
+= standard_args
[i
].nargs
;
1249 /* Look for a match with a known long option.
1250 MATCH is -1 if no match so far, -2 if two or more matches so far,
1251 >= 0 (the table index of the match) if just one match so far. */
1252 if (argv
[from
][1] == '-')
1255 thislen
= strlen (argv
[from
]);
1256 equals
= index (argv
[from
], '=');
1258 thislen
= equals
- argv
[from
];
1261 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1262 if (standard_args
[i
].longname
1263 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1272 /* If we found exactly one match, use that. */
1275 options
[from
] = standard_args
[match
].nargs
;
1276 priority
[from
] = standard_args
[match
].priority
;
1277 /* If --OPTION=VALUE syntax is used,
1278 this option uses just one argv element. */
1281 if (from
+ options
[from
] >= argc
)
1282 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1283 from
+= options
[from
];
1290 /* Copy the arguments, in order of decreasing priority, to NEW. */
1295 int best_priority
= -9999;
1297 /* Find the highest priority remaining option.
1298 If several have equal priority, take the first of them. */
1299 for (from
= 1; from
< argc
; from
++)
1301 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1303 best_priority
= priority
[from
];
1306 /* Skip option arguments--they are tied to the options. */
1307 if (options
[from
] > 0)
1308 from
+= options
[from
];
1314 /* Copy the highest priority remaining option, with its args, to NEW. */
1315 new[to
++] = argv
[best
];
1316 for (i
= 0; i
< options
[best
]; i
++)
1317 new[to
++] = argv
[best
+ i
+ 1];
1319 /* Clear out this option in ARGV. */
1321 for (i
= 0; i
< options
[best
]; i
++)
1322 argv
[best
+ i
+ 1] = 0;
1325 bcopy (new, argv
, sizeof (char *) * argc
);
1332 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1333 "Exit the Emacs job and kill it.\n\
1334 If ARG is an integer, return ARG as the exit program code.\n\
1335 If ARG is a string, stuff it as keyboard input.\n\n\
1336 The value of `kill-emacs-hook', if not void,\n\
1337 is a list of functions (of no args),\n\
1338 all of which are called before Emacs is actually killed.")
1342 Lisp_Object hook
, hook1
;
1344 struct gcpro gcpro1
;
1351 if (!NILP (Vrun_hooks
) && !noninteractive
)
1352 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1356 /* Is it really necessary to do this deassign
1357 when we are going to exit anyway? */
1362 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1364 /* If we have an auto-save list file,
1365 kill it because we are exiting Emacs deliberately (not crashing).
1366 Do it after shut_down_emacs, which does an auto-save. */
1367 if (STRINGP (Vauto_save_list_file_name
))
1368 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1370 exit (INTEGERP (arg
) ? XINT (arg
)
1381 /* Perform an orderly shutdown of Emacs. Autosave any modified
1382 buffers, kill any child processes, clean up the terminal modes (if
1383 we're in the foreground), and other stuff like that. Don't perform
1384 any redisplay; this may be called when Emacs is shutting down in
1385 the background, or after its X connection has died.
1387 If SIG is a signal number, print a message for it.
1389 This is called by fatal signal handlers, X protocol error handlers,
1393 shut_down_emacs (sig
, no_x
, stuff
)
1397 /* Prevent running of hooks from now on. */
1400 /* If we are controlling the terminal, reset terminal modes */
1401 #ifdef EMACS_HAVE_TTY_PGRP
1403 int pgrp
= EMACS_GETPGRP (0);
1406 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1411 if (sig
&& sig
!= SIGTERM
)
1412 fprintf (stderr
, "Fatal error (%d).", sig
);
1420 stuff_buffered_input (stuff
);
1422 kill_buffer_processes (Qnil
);
1423 Fdo_auto_save (Qt
, Qnil
);
1425 #ifdef CLASH_DETECTION
1426 unlock_all_files ();
1430 kill_vms_processes ();
1433 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1434 #ifdef HAVE_X_WINDOWS
1435 /* It's not safe to call intern here. Maybe we are crashing. */
1436 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1437 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1438 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1440 Fx_close_current_connection ();
1441 #endif /* HAVE_X_WINDOWS */
1445 /* There is a tendency for a SIGIO signal to arrive within exit,
1446 and cause a SIGHUP because the input descriptor is already closed. */
1448 signal (SIGIO
, SIG_IGN
);
1462 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1463 "Dump current state of Emacs into data file FILENAME.\n\
1464 This function exists on systems that use HAVE_SHM.")
1466 Lisp_Object filename
;
1468 extern char my_edata
[];
1471 CHECK_STRING (filename
, 0);
1472 filename
= Fexpand_file_name (filename
, Qnil
);
1475 Vpurify_flag
= Qnil
;
1478 /* Tell malloc where start of impure now is */
1479 /* Also arrange for warnings when nearly out of space. */
1480 #ifndef SYSTEM_MALLOC
1481 memory_warnings (my_edata
, malloc_warning
);
1483 map_out_data (XSTRING (filename
)->data
);
1490 #else /* not HAVE_SHM */
1492 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1493 "Dump current state of Emacs into executable file FILENAME.\n\
1494 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1495 This is used in the file `loadup.el' when building Emacs.\n\
1497 You must run Emacs in batch mode in order to dump it.")
1499 Lisp_Object filename
, symfile
;
1501 extern char my_edata
[];
1504 int count
= specpdl_ptr
- specpdl
;
1506 if (! noninteractive
)
1507 error ("Dumping Emacs works only in batch mode");
1509 /* Bind `command-line-processed' to nil before dumping,
1510 so that the dumped Emacs will process its command line
1511 and set up to work with X windows if appropriate. */
1512 symbol
= intern ("command-line-process");
1513 specbind (symbol
, Qnil
);
1515 CHECK_STRING (filename
, 0);
1516 filename
= Fexpand_file_name (filename
, Qnil
);
1517 if (!NILP (symfile
))
1519 CHECK_STRING (symfile
, 0);
1520 if (XSTRING (symfile
)->size
)
1521 symfile
= Fexpand_file_name (symfile
, Qnil
);
1525 Vpurify_flag
= Qnil
;
1528 set_time_zone_rule (dump_tz
);
1529 #ifndef LOCALTIME_CACHE
1530 /* Force a tz reload, since set_time_zone_rule doesn't. */
1537 mapout_data (XSTRING (filename
)->data
);
1539 /* Tell malloc where start of impure now is */
1540 /* Also arrange for warnings when nearly out of space. */
1541 #ifndef SYSTEM_MALLOC
1543 /* On Windows, this was done before dumping, and that once suffices.
1544 Meanwhile, my_edata is not valid on Windows. */
1545 memory_warnings (my_edata
, malloc_warning
);
1546 #endif /* not WINDOWSNT */
1548 #ifdef DOUG_LEA_MALLOC
1549 malloc_state_ptr
= malloc_get_state ();
1551 unexec (XSTRING (filename
)->data
,
1552 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1553 #ifdef DOUG_LEA_MALLOC
1554 free (malloc_state_ptr
);
1556 #endif /* not VMS */
1560 return unbind_to (count
, Qnil
);
1563 #endif /* not HAVE_SHM */
1565 #endif /* not CANNOT_DUMP */
1572 decode_env_path (evarname
, defalt
)
1573 char *evarname
, *defalt
;
1575 register char *path
, *p
;
1576 Lisp_Object lpath
, element
, tem
;
1578 /* It's okay to use getenv here, because this function is only used
1579 to initialize variables when Emacs starts up, and isn't called
1582 path
= (char *) getenv (evarname
);
1588 /* Ensure values from the environment use the proper directory separator. */
1591 p
= alloca (strlen (path
) + 1);
1595 if ('/' == DIRECTORY_SEP
)
1596 dostounix_filename (path
);
1598 unixtodos_filename (path
);
1604 p
= index (path
, SEPCHAR
);
1605 if (!p
) p
= path
+ strlen (path
);
1606 element
= (p
- path
? make_string (path
, p
- path
)
1607 : build_string ("."));
1609 /* Add /: to the front of the name
1610 if it would otherwise be treated as magic. */
1611 tem
= Ffind_file_name_handler (element
, Qt
);
1613 element
= concat2 (build_string ("/:"), element
);
1615 lpath
= Fcons (element
, lpath
);
1621 return Fnreverse (lpath
);
1626 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1627 staticpro (&Qfile_name_handler_alist
);
1631 defsubr (&Sdump_emacs_data
);
1633 defsubr (&Sdump_emacs
);
1637 defsubr (&Skill_emacs
);
1639 defsubr (&Sinvocation_name
);
1640 defsubr (&Sinvocation_directory
);
1642 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1643 "Args passed by shell to Emacs, as a list of strings.");
1645 DEFVAR_LISP ("system-type", &Vsystem_type
,
1646 "Value is symbol indicating type of operating system you are using.");
1647 Vsystem_type
= intern (SYSTEM_TYPE
);
1649 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1650 "Value is string indicating configuration Emacs was built for.");
1651 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1653 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1654 "String containing the configuration options Emacs was built with.");
1655 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1657 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1658 "Non-nil means Emacs is running without interactive terminal.");
1660 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1661 "Hook to be run whenever kill-emacs is called.\n\
1662 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1663 in other similar situations), functions placed on this hook should not\n\
1664 expect to be able to interact with the user. To ask for confirmation,\n\
1665 see `kill-emacs-query-functions' instead.");
1666 Vkill_emacs_hook
= Qnil
;
1668 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1669 "Priority for Emacs to run at.\n\
1670 This value is effective only if set before Emacs is dumped,\n\
1671 and only if the Emacs executable is installed with setuid to permit\n\
1672 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1673 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1674 before you compile Emacs, to enable the code for this feature.");
1677 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1678 "The program name that was used to run Emacs.\n\
1679 Any directory names are omitted.");
1681 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1682 "The directory in which the Emacs executable was found, to run it.\n\
1683 The value is nil if that directory's name is not known.");
1685 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1686 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1687 This is non-nil when we can't find those directories in their standard\n\
1688 installed locations, but we can find them\n\
1689 near where the Emacs executable was found.");
1690 Vinstallation_directory
= Qnil
;