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 #ifdef RUN_TIME_REMAP
510 run_time_remap (argv
[0]);
513 sort_args (argc
, argv
);
515 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
518 tem
= Fsymbol_value (intern ("emacs-version"));
521 fprintf (stderr
, "Invalid value of `emacs-version'\n");
526 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
527 printf ("Copyright (C) 1997 Free Software Foundation, Inc.\n");
528 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
529 printf ("You may redistribute copies of Emacs\n");
530 printf ("under the terms of the GNU General Public License.\n");
531 printf ("For more information about these matters, ");
532 printf ("see the files named COPYING.\n");
537 /* Map in shared memory, if we are using that. */
539 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
542 /* The shared memory was just restored, which clobbered this. */
548 /* The shared memory was just restored, which clobbered this. */
555 extern int malloc_cookie
;
556 /* This helps out unexnext.c. */
558 if (malloc_jumpstart (malloc_cookie
) != 0)
559 printf ("malloc jumpstart failed!\n");
564 /* If -map specified, map the data file in */
567 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
571 #ifdef LINK_CRTL_SHARE
572 #ifdef SHARABLE_LIB_BUG
573 /* Bletcherous shared libraries! */
575 stdin
= fdopen (0, "r");
577 stdout
= fdopen (1, "w");
579 stderr
= fdopen (2, "w");
582 #endif /* SHARABLE_LIB_BUG */
583 #endif /* LINK_CRTL_SHARE */
586 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
587 /* Extend the stack space available.
588 Don't do that if dumping, since some systems (e.g. DJGPP)
589 might define a smaller stack limit at that time. */
592 && (!noninteractive
|| initialized
)
594 && !getrlimit (RLIMIT_STACK
, &rlim
))
597 extern int re_max_failures
;
598 /* Approximate the amount regex.c needs, plus some more. */
599 newlim
= re_max_failures
* 2 * 20 * sizeof (char *);
601 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
602 stack allocation routine for new process that the allocation
603 fails if stack limit is not on page boundary. So, round up the
604 new limit to page boundary. */
605 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
607 if (newlim
> rlim
.rlim_max
)
609 newlim
= rlim
.rlim_max
;
610 /* Don't let regex.c overflow the stack. */
611 re_max_failures
= newlim
/ (2 * 20 * sizeof (char *));
613 if (rlim
.rlim_cur
< newlim
)
614 rlim
.rlim_cur
= newlim
;
616 setrlimit (RLIMIT_STACK
, &rlim
);
618 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
620 /* Record (approximately) where the stack begins. */
621 stack_bottom
= &stack_bottom_variable
;
623 #ifdef USG_SHARED_LIBRARIES
625 brk ((void *)bss_end
);
630 #ifndef SYSTEM_MALLOC
633 /* Arrange to get warning messages as memory fills up. */
634 memory_warnings (0, malloc_warning
);
636 /* Arrange to disable interrupt input while malloc and friends are
638 uninterrupt_malloc ();
640 #endif /* not SYSTEM_MALLOC */
643 /* We do all file input/output as binary files. When we need to translate
644 newlines, we do that manually. */
648 if (!isatty (fileno (stdin
)))
649 setmode (fileno (stdin
), O_BINARY
);
650 if (!isatty (fileno (stdout
)))
653 setmode (fileno (stdout
), O_BINARY
);
655 #else /* not __DJGPP__ >= 2 */
656 (stdin
)->_flag
&= ~_IOTEXT
;
657 (stdout
)->_flag
&= ~_IOTEXT
;
658 (stderr
)->_flag
&= ~_IOTEXT
;
659 #endif /* not __DJGPP__ >= 2 */
662 #ifdef SET_EMACS_PRIORITY
664 nice (emacs_priority
);
666 #endif /* SET_EMACS_PRIORITY */
668 #ifdef EXTRA_INITIALIZE
672 inhibit_window_system
= 0;
674 /* Handle the -t switch, which specifies filename to use as terminal */
677 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
682 result
= open (term
, O_RDWR
, 2 );
685 char *errstring
= strerror (errno
);
686 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
692 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
695 fprintf (stderr
, "Using %s\n", term
);
696 #ifdef HAVE_WINDOW_SYSTEM
697 inhibit_window_system
= 1; /* -t => -nw */
701 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
702 inhibit_window_system
= 1;
704 /* Handle the -batch switch, which means don't do interactive display. */
706 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
709 /* Handle the --help option, which gives a usage message.. */
710 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
713 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
714 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
715 [--version] [--no-site-file]\n\
716 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
717 [+linenum] file-to-visit [--kill]\n\
718 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
719 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
723 #ifdef HAVE_X_WINDOWS
724 /* Stupid kludge to catch command-line display spec. We can't
725 handle this argument entirely in window system dependent code
726 because we don't even know which window system dependent code
727 to run until we've recognized this argument. */
729 char *displayname
= 0;
731 int count_before
= skip_args
;
733 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
735 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
738 /* If we have the form --display=NAME,
739 convert it into -d name.
740 This requires inserting a new element into argv. */
741 if (displayname
!= 0 && skip_args
- count_before
== 1)
743 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
746 for (j
= 0; j
< count_before
+ 1; j
++)
748 new[count_before
+ 1] = "-d";
749 new[count_before
+ 2] = displayname
;
750 for (j
= count_before
+ 2; j
<argc
; j
++)
751 new[j
+ 1] = argv
[j
];
755 /* Change --display to -d, when its arg is separate. */
756 else if (displayname
!= 0 && skip_args
> count_before
757 && argv
[count_before
+ 1][1] == '-')
758 argv
[count_before
+ 1] = "-d";
760 /* Don't actually discard this arg. */
761 skip_args
= count_before
;
765 if (! noninteractive
)
770 inherited_pgroup
= EMACS_GETPGRP (0);
771 setpgrp (0, getpid ());
774 #if defined (USG5) && defined (INTERRUPT_INPUT)
784 /* Don't catch SIGHUP if dumping. */
791 sigblock (sigmask (SIGHUP
));
792 /* In --batch mode, don't catch SIGHUP if already ignored.
793 That makes nohup work. */
795 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
796 signal (SIGHUP
, fatal_error_signal
);
797 sigunblock (sigmask (SIGHUP
));
802 ! noninteractive
|| initialized
808 /* Don't catch these signals in batch mode if dumping.
809 On some machines, this sets static data that would make
810 signal fail to work right when the dumped Emacs is run. */
811 signal (SIGQUIT
, fatal_error_signal
);
812 signal (SIGILL
, fatal_error_signal
);
813 signal (SIGTRAP
, fatal_error_signal
);
815 signal (SIGABRT
, fatal_error_signal
);
818 signal (SIGHWE
, fatal_error_signal
);
821 signal (SIGPRE
, fatal_error_signal
);
824 signal (SIGORE
, fatal_error_signal
);
827 signal (SIGUME
, fatal_error_signal
);
830 signal (SIGDLK
, fatal_error_signal
);
833 signal (SIGCPULIM
, fatal_error_signal
);
836 /* This is missing on some systems - OS/2, for example. */
837 signal (SIGIOT
, fatal_error_signal
);
840 signal (SIGEMT
, fatal_error_signal
);
842 signal (SIGFPE
, fatal_error_signal
);
844 signal (SIGBUS
, fatal_error_signal
);
846 signal (SIGSEGV
, fatal_error_signal
);
848 signal (SIGSYS
, fatal_error_signal
);
850 signal (SIGTERM
, fatal_error_signal
);
852 signal (SIGXCPU
, fatal_error_signal
);
855 signal (SIGXFSZ
, fatal_error_signal
);
859 /* This just means available memory is getting low. */
860 signal (SIGDANGER
, memory_warning_signal
);
864 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
865 signal (SIGXCPU
, fatal_error_signal
);
867 signal (SIGIOINT
, fatal_error_signal
);
869 signal (SIGGRANT
, fatal_error_signal
);
870 signal (SIGRETRACT
, fatal_error_signal
);
871 signal (SIGSOUND
, fatal_error_signal
);
872 signal (SIGMSG
, fatal_error_signal
);
876 noninteractive1
= noninteractive
;
878 /* Perform basic initializations (not merely interning symbols) */
885 init_charset_once ();
887 init_syntax_once (); /* Create standard syntax table. */
888 init_category_once (); /* Create standard category table. */
889 /* Must be done before init_buffer */
890 init_casetab_once ();
891 init_buffer_once (); /* Create buffer table and some buffers */
892 init_minibuf_once (); /* Create list of minibuffers */
893 /* Must precede init_window_once */
894 init_window_once (); /* Init the window system */
900 running_asynch_code
= 0;
903 /* Call early 'cause init_environment needs it. */
905 /* Set defaults for several environment variables. */
907 init_environment (argc
, argv
, skip_args
);
913 /* Initialize environment from registry settings. */
915 init_ntproc (); /* must precede init_editfns */
918 /* egetenv is a pretty low-level facility, which may get called in
919 many circumstances; it seems flimsy to put off initializing it
920 until calling init_callproc. */
921 set_process_environment ();
922 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
923 if this is not done. Do it after set_process_environment so that we
924 don't pollute Vprocess_environment. */
929 init_buffer (); /* Init default directory of main buffer */
931 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
932 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
936 /* Erase any pre-dump messages in the message log, to avoid confusion */
937 Lisp_Object old_log_max
;
938 old_log_max
= Vmessage_log_max
;
939 XSETFASTINT (Vmessage_log_max
, 0);
940 message_dolog ("", 0, 1);
941 Vmessage_log_max
= old_log_max
;
944 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
950 init_vms_input ();/* init_display calls get_frame_size, that needs this */
952 init_display (); /* Determine terminal type. init_sys_modes uses results */
954 init_keyboard (); /* This too must precede init_sys_modes */
956 init_vmsproc (); /* And this too. */
958 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
962 #ifdef LISP_FLOAT_TYPE
970 /* Intern the names of all standard functions and variables; define standard keys */
974 /* The basic levels of Lisp must come first */
975 /* And data must come first of all
976 for the sake of symbols like error-message */
989 syms_of_casefiddle ();
996 #ifndef NO_DIR_LIBRARY
998 #endif /* not NO_DIR_LIBRARY */
1004 syms_of_coding (); /* This should be after syms_of_fileio. */
1005 #ifdef CLASH_DETECTION
1006 syms_of_filelock ();
1007 #endif /* CLASH_DETECTION */
1010 syms_of_keyboard ();
1015 syms_of_mocklisp ();
1023 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1024 syms_of_textprop ();
1030 #endif /* WINDOWSNT */
1033 #ifdef HAVE_X_WINDOWS
1040 #endif /* HAVE_X_WINDOWS */
1050 syms_of_w32faces ();
1051 syms_of_w32select ();
1053 #endif /* HAVE_NTGUI */
1063 keys_of_casefiddle ();
1066 keys_of_keyboard ();
1077 /* Handle -l loadup-and-dump, args passed by Makefile. */
1078 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1079 Vtop_level
= Fcons (intern ("load"),
1080 Fcons (build_string (file
), Qnil
));
1082 /* Unless next switch is -nl, load "loadup.el" first thing. */
1083 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
1084 Vtop_level
= Fcons (intern ("load"),
1085 Fcons (build_string ("loadup.el"), Qnil
));
1086 #endif /* CANNOT_DUMP */
1093 /* If the execution TZ happens to be the same as the dump TZ,
1094 change it to some other value and then change it back,
1095 to force the underlying implementation to reload the TZ info.
1096 This is needed on implementations that load TZ info from files,
1097 since the TZ file contents may differ between dump and execution. */
1098 char *tz
= getenv ("TZ");
1099 if (tz
&& !strcmp (tz
, dump_tz
))
1109 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1110 FreeBSD. It might work on some other systems too.
1111 Give it a try and tell me if it works on your system. */
1116 extern void _mcleanup ();
1118 extern Lisp_Object
Fredraw_frame ();
1120 /* This uses Fredraw_frame because that function
1121 comes first in the Emacs executable.
1122 It might be better to use something that gives
1123 the start of the text segment, but start_of_text
1124 is not defined on all systems now. */
1125 monstartup (Fredraw_frame
, &etext
);
1134 #ifdef LOCALTIME_CACHE
1135 /* Some versions of localtime have a bug. They cache the value of the time
1136 zone rather than looking it up every time. Since localtime() is
1137 called to bolt the undumping time into the undumped emacs, this
1138 results in localtime ignoring the TZ environment variable.
1139 This flushes the new TZ value into localtime. */
1141 #endif /* defined (LOCALTIME_CACHE) */
1143 /* Enter editor command loop. This never returns. */
1148 /* Sort the args so we can find the most important ones
1149 at the beginning of argv. */
1151 /* First, here's a table of all the standard options. */
1153 struct standard_args
1161 struct standard_args standard_args
[] =
1163 { "-version", "--version", 110, 0 },
1164 { "-help", "--help", 110, 0 },
1165 { "-nl", "--no-shared-memory", 100, 0 },
1167 { "-map", "--map-data", 100, 0 },
1169 { "-t", "--terminal", 90, 1 },
1170 { "-d", "--display", 80, 1 },
1171 { "-display", 0, 80, 1 },
1172 { "-nw", "--no-windows", 70, 0 },
1173 { "-batch", "--batch", 60, 0 },
1174 { "-q", "--no-init-file", 50, 0 },
1175 { "-no-init-file", 0, 50, 0 },
1176 { "-no-site-file", "--no-site-file", 40, 0 },
1177 { "-u", "--user", 30, 1 },
1178 { "-user", 0, 30, 1 },
1179 { "-debug-init", "--debug-init", 20, 0 },
1180 { "-i", "--icon-type", 15, 0 },
1181 { "-itype", 0, 15, 0 },
1182 { "-iconic", "--iconic", 15, 0 },
1183 { "-bg", "--background-color", 10, 1 },
1184 { "-background", 0, 10, 1 },
1185 { "-fg", "--foreground-color", 10, 1 },
1186 { "-foreground", 0, 10, 1 },
1187 { "-bd", "--border-color", 10, 1 },
1188 { "-bw", "--border-width", 10, 1 },
1189 { "-ib", "--internal-border", 10, 1 },
1190 { "-ms", "--mouse-color", 10, 1 },
1191 { "-cr", "--cursor-color", 10, 1 },
1192 { "-fn", "--font", 10, 1 },
1193 { "-font", 0, 10, 1 },
1194 { "-g", "--geometry", 10, 1 },
1195 { "-geometry", 0, 10, 1 },
1196 { "-T", "--title", 10, 1 },
1197 { "-title", 0, 10, 1 },
1198 { "-name", "--name", 10, 1 },
1199 { "-xrm", "--xrm", 10, 1 },
1200 { "-r", "--reverse-video", 5, 0 },
1202 { "-reverse", 0, 5, 0 },
1203 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1204 { "-vb", "--vertical-scroll-bars", 5, 0 },
1205 /* These have the same priority as ordinary file name args,
1206 so they are not reordered with respect to those. */
1207 { "-L", "--directory", 0, 1 },
1208 { "-directory", 0, 0, 1 },
1209 { "-l", "--load", 0, 1 },
1210 { "-load", 0, 0, 1 },
1211 { "-f", "--funcall", 0, 1 },
1212 { "-funcall", 0, 0, 1 },
1213 { "-eval", "--eval", 0, 1 },
1214 { "-find-file", "--find-file", 0, 1 },
1215 { "-visit", "--visit", 0, 1 },
1216 { "-insert", "--insert", 0, 1 },
1217 /* This should be processed after ordinary file name args and the like. */
1218 { "-kill", "--kill", -10, 0 },
1221 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1222 so that the highest priority ones come first.
1223 Do not change the order of elements of equal priority.
1224 If an option takes an argument, keep it and its argument together. */
1227 sort_args (argc
, argv
)
1231 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1232 /* For each element of argv,
1233 the corresponding element of options is:
1234 0 for an option that takes no arguments,
1235 1 for an option that takes one argument, etc.
1236 -1 for an ordinary non-option argument. */
1237 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1238 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1242 int end_of_options
= argc
;
1244 /* Categorize all the options,
1245 and figure out which argv elts are option arguments. */
1246 for (from
= 1; from
< argc
; from
++)
1250 if (argv
[from
][0] == '-')
1255 /* If we have found "--", don't consider
1256 any more arguments as options. */
1257 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1259 /* Leave the "--", and everything following it, at the end. */
1260 for (; from
< argc
; from
++)
1262 priority
[from
] = -100;
1268 /* Look for a match with a known old-fashioned option. */
1269 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1270 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1272 options
[from
] = standard_args
[i
].nargs
;
1273 priority
[from
] = standard_args
[i
].priority
;
1274 if (from
+ standard_args
[i
].nargs
>= argc
)
1275 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1276 from
+= standard_args
[i
].nargs
;
1280 /* Look for a match with a known long option.
1281 MATCH is -1 if no match so far, -2 if two or more matches so far,
1282 >= 0 (the table index of the match) if just one match so far. */
1283 if (argv
[from
][1] == '-')
1286 thislen
= strlen (argv
[from
]);
1287 equals
= index (argv
[from
], '=');
1289 thislen
= equals
- argv
[from
];
1292 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1293 if (standard_args
[i
].longname
1294 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1303 /* If we found exactly one match, use that. */
1306 options
[from
] = standard_args
[match
].nargs
;
1307 priority
[from
] = standard_args
[match
].priority
;
1308 /* If --OPTION=VALUE syntax is used,
1309 this option uses just one argv element. */
1312 if (from
+ options
[from
] >= argc
)
1313 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1314 from
+= options
[from
];
1321 /* Copy the arguments, in order of decreasing priority, to NEW. */
1326 int best_priority
= -9999;
1328 /* Find the highest priority remaining option.
1329 If several have equal priority, take the first of them. */
1330 for (from
= 1; from
< argc
; from
++)
1332 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1334 best_priority
= priority
[from
];
1337 /* Skip option arguments--they are tied to the options. */
1338 if (options
[from
] > 0)
1339 from
+= options
[from
];
1345 /* Copy the highest priority remaining option, with its args, to NEW. */
1346 new[to
++] = argv
[best
];
1347 for (i
= 0; i
< options
[best
]; i
++)
1348 new[to
++] = argv
[best
+ i
+ 1];
1350 /* Clear out this option in ARGV. */
1352 for (i
= 0; i
< options
[best
]; i
++)
1353 argv
[best
+ i
+ 1] = 0;
1356 bcopy (new, argv
, sizeof (char *) * argc
);
1363 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1364 "Exit the Emacs job and kill it.\n\
1365 If ARG is an integer, return ARG as the exit program code.\n\
1366 If ARG is a string, stuff it as keyboard input.\n\n\
1367 The value of `kill-emacs-hook', if not void,\n\
1368 is a list of functions (of no args),\n\
1369 all of which are called before Emacs is actually killed.")
1373 Lisp_Object hook
, hook1
;
1375 struct gcpro gcpro1
;
1382 if (!NILP (Vrun_hooks
) && !noninteractive
)
1383 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1387 /* Is it really necessary to do this deassign
1388 when we are going to exit anyway? */
1393 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1395 /* If we have an auto-save list file,
1396 kill it because we are exiting Emacs deliberately (not crashing).
1397 Do it after shut_down_emacs, which does an auto-save. */
1398 if (STRINGP (Vauto_save_list_file_name
))
1399 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1401 exit (INTEGERP (arg
) ? XINT (arg
)
1412 /* Perform an orderly shutdown of Emacs. Autosave any modified
1413 buffers, kill any child processes, clean up the terminal modes (if
1414 we're in the foreground), and other stuff like that. Don't perform
1415 any redisplay; this may be called when Emacs is shutting down in
1416 the background, or after its X connection has died.
1418 If SIG is a signal number, print a message for it.
1420 This is called by fatal signal handlers, X protocol error handlers,
1424 shut_down_emacs (sig
, no_x
, stuff
)
1428 /* Prevent running of hooks from now on. */
1431 /* If we are controlling the terminal, reset terminal modes */
1432 #ifdef EMACS_HAVE_TTY_PGRP
1434 int pgrp
= EMACS_GETPGRP (0);
1437 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1442 if (sig
&& sig
!= SIGTERM
)
1443 fprintf (stderr
, "Fatal error (%d).", sig
);
1451 stuff_buffered_input (stuff
);
1453 kill_buffer_processes (Qnil
);
1454 Fdo_auto_save (Qt
, Qnil
);
1456 #ifdef CLASH_DETECTION
1457 unlock_all_files ();
1461 kill_vms_processes ();
1464 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1465 #ifdef HAVE_X_WINDOWS
1466 /* It's not safe to call intern here. Maybe we are crashing. */
1467 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1468 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1469 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1471 Fx_close_current_connection ();
1472 #endif /* HAVE_X_WINDOWS */
1476 /* There is a tendency for a SIGIO signal to arrive within exit,
1477 and cause a SIGHUP because the input descriptor is already closed. */
1479 signal (SIGIO
, SIG_IGN
);
1493 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1494 "Dump current state of Emacs into data file FILENAME.\n\
1495 This function exists on systems that use HAVE_SHM.")
1497 Lisp_Object filename
;
1499 extern char my_edata
[];
1502 CHECK_STRING (filename
, 0);
1503 filename
= Fexpand_file_name (filename
, Qnil
);
1506 Vpurify_flag
= Qnil
;
1509 /* Tell malloc where start of impure now is */
1510 /* Also arrange for warnings when nearly out of space. */
1511 #ifndef SYSTEM_MALLOC
1512 memory_warnings (my_edata
, malloc_warning
);
1514 map_out_data (XSTRING (filename
)->data
);
1521 #else /* not HAVE_SHM */
1523 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1524 "Dump current state of Emacs into executable file FILENAME.\n\
1525 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1526 This is used in the file `loadup.el' when building Emacs.\n\
1528 You must run Emacs in batch mode in order to dump it.")
1530 Lisp_Object filename
, symfile
;
1532 extern char my_edata
[];
1535 int count
= specpdl_ptr
- specpdl
;
1537 if (! noninteractive
)
1538 error ("Dumping Emacs works only in batch mode");
1540 /* Bind `command-line-processed' to nil before dumping,
1541 so that the dumped Emacs will process its command line
1542 and set up to work with X windows if appropriate. */
1543 symbol
= intern ("command-line-process");
1544 specbind (symbol
, Qnil
);
1546 CHECK_STRING (filename
, 0);
1547 filename
= Fexpand_file_name (filename
, Qnil
);
1548 if (!NILP (symfile
))
1550 CHECK_STRING (symfile
, 0);
1551 if (XSTRING (symfile
)->size
)
1552 symfile
= Fexpand_file_name (symfile
, Qnil
);
1556 Vpurify_flag
= Qnil
;
1559 set_time_zone_rule (dump_tz
);
1560 #ifndef LOCALTIME_CACHE
1561 /* Force a tz reload, since set_time_zone_rule doesn't. */
1568 mapout_data (XSTRING (filename
)->data
);
1570 /* Tell malloc where start of impure now is */
1571 /* Also arrange for warnings when nearly out of space. */
1572 #ifndef SYSTEM_MALLOC
1574 /* On Windows, this was done before dumping, and that once suffices.
1575 Meanwhile, my_edata is not valid on Windows. */
1576 memory_warnings (my_edata
, malloc_warning
);
1577 #endif /* not WINDOWSNT */
1579 #ifdef DOUG_LEA_MALLOC
1580 malloc_state_ptr
= malloc_get_state ();
1582 unexec (XSTRING (filename
)->data
,
1583 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1584 #ifdef DOUG_LEA_MALLOC
1585 free (malloc_state_ptr
);
1587 #endif /* not VMS */
1591 return unbind_to (count
, Qnil
);
1594 #endif /* not HAVE_SHM */
1596 #endif /* not CANNOT_DUMP */
1603 decode_env_path (evarname
, defalt
)
1604 char *evarname
, *defalt
;
1606 register char *path
, *p
;
1607 Lisp_Object lpath
, element
, tem
;
1609 /* It's okay to use getenv here, because this function is only used
1610 to initialize variables when Emacs starts up, and isn't called
1613 path
= (char *) getenv (evarname
);
1619 /* Ensure values from the environment use the proper directory separator. */
1622 p
= alloca (strlen (path
) + 1);
1626 if ('/' == DIRECTORY_SEP
)
1627 dostounix_filename (path
);
1629 unixtodos_filename (path
);
1635 p
= index (path
, SEPCHAR
);
1636 if (!p
) p
= path
+ strlen (path
);
1637 element
= (p
- path
? make_string (path
, p
- path
)
1638 : build_string ("."));
1640 /* Add /: to the front of the name
1641 if it would otherwise be treated as magic. */
1642 tem
= Ffind_file_name_handler (element
, Qt
);
1644 element
= concat2 (build_string ("/:"), element
);
1646 lpath
= Fcons (element
, lpath
);
1652 return Fnreverse (lpath
);
1657 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1658 staticpro (&Qfile_name_handler_alist
);
1662 defsubr (&Sdump_emacs_data
);
1664 defsubr (&Sdump_emacs
);
1668 defsubr (&Skill_emacs
);
1670 defsubr (&Sinvocation_name
);
1671 defsubr (&Sinvocation_directory
);
1673 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1674 "Args passed by shell to Emacs, as a list of strings.");
1676 DEFVAR_LISP ("system-type", &Vsystem_type
,
1677 "Value is symbol indicating type of operating system you are using.");
1678 Vsystem_type
= intern (SYSTEM_TYPE
);
1680 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1681 "Value is string indicating configuration Emacs was built for.");
1682 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1684 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1685 "String containing the configuration options Emacs was built with.");
1686 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1688 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1689 "Non-nil means Emacs is running without interactive terminal.");
1691 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1692 "Hook to be run whenever kill-emacs is called.\n\
1693 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1694 in other similar situations), functions placed on this hook should not\n\
1695 expect to be able to interact with the user. To ask for confirmation,\n\
1696 see `kill-emacs-query-functions' instead.");
1697 Vkill_emacs_hook
= Qnil
;
1699 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1700 "Priority for Emacs to run at.\n\
1701 This value is effective only if set before Emacs is dumped,\n\
1702 and only if the Emacs executable is installed with setuid to permit\n\
1703 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1704 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1705 before you compile Emacs, to enable the code for this feature.");
1708 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1709 "The program name that was used to run Emacs.\n\
1710 Any directory names are omitted.");
1712 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1713 "The directory in which the Emacs executable was found, to run it.\n\
1714 The value is nil if that directory's name is not known.");
1716 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1717 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1718 This is non-nil when we can't find those directories in their standard\n\
1719 installed locations, but we can find them\n\
1720 near where the Emacs executable was found.");
1721 Vinstallation_directory
= Qnil
;