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 per unit of re_max_failures. */
599 int ratio
= 20 * sizeof (char *);
600 /* Then add 33% to cover the size of the smaller stacks that regex.c
601 successively allocates and discards, on its way to the maximum. */
603 /* Add in some extra to cover
604 what we're likely to use for other reasons. */
605 newlim
= re_max_failures
* ratio
+ 200000;
607 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
608 stack allocation routine for new process that the allocation
609 fails if stack limit is not on page boundary. So, round up the
610 new limit to page boundary. */
611 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
613 if (newlim
> rlim
.rlim_max
)
615 newlim
= rlim
.rlim_max
;
616 /* Don't let regex.c overflow the stack we have. */
617 re_max_failures
= (newlim
- 200000) / ratio
;
619 if (rlim
.rlim_cur
< newlim
)
620 rlim
.rlim_cur
= newlim
;
622 setrlimit (RLIMIT_STACK
, &rlim
);
624 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
626 /* Record (approximately) where the stack begins. */
627 stack_bottom
= &stack_bottom_variable
;
629 #ifdef USG_SHARED_LIBRARIES
631 brk ((void *)bss_end
);
636 #ifndef SYSTEM_MALLOC
639 /* Arrange to get warning messages as memory fills up. */
640 memory_warnings (0, malloc_warning
);
642 /* Arrange to disable interrupt input while malloc and friends are
644 uninterrupt_malloc ();
646 #endif /* not SYSTEM_MALLOC */
649 /* We do all file input/output as binary files. When we need to translate
650 newlines, we do that manually. */
654 if (!isatty (fileno (stdin
)))
655 setmode (fileno (stdin
), O_BINARY
);
656 if (!isatty (fileno (stdout
)))
659 setmode (fileno (stdout
), O_BINARY
);
661 #else /* not __DJGPP__ >= 2 */
662 (stdin
)->_flag
&= ~_IOTEXT
;
663 (stdout
)->_flag
&= ~_IOTEXT
;
664 (stderr
)->_flag
&= ~_IOTEXT
;
665 #endif /* not __DJGPP__ >= 2 */
668 #ifdef SET_EMACS_PRIORITY
670 nice (emacs_priority
);
672 #endif /* SET_EMACS_PRIORITY */
674 #ifdef EXTRA_INITIALIZE
678 inhibit_window_system
= 0;
680 /* Handle the -t switch, which specifies filename to use as terminal */
683 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
688 result
= open (term
, O_RDWR
, 2 );
691 char *errstring
= strerror (errno
);
692 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
698 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
701 fprintf (stderr
, "Using %s\n", term
);
702 #ifdef HAVE_WINDOW_SYSTEM
703 inhibit_window_system
= 1; /* -t => -nw */
707 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
708 inhibit_window_system
= 1;
710 /* Handle the -batch switch, which means don't do interactive display. */
712 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
715 /* Handle the --help option, which gives a usage message.. */
716 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
719 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
720 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
721 [--version] [--no-site-file]\n\
722 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
723 [+linenum] file-to-visit [--kill]\n\
724 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
725 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
729 #ifdef HAVE_X_WINDOWS
730 /* Stupid kludge to catch command-line display spec. We can't
731 handle this argument entirely in window system dependent code
732 because we don't even know which window system dependent code
733 to run until we've recognized this argument. */
735 char *displayname
= 0;
737 int count_before
= skip_args
;
739 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
741 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
744 /* If we have the form --display=NAME,
745 convert it into -d name.
746 This requires inserting a new element into argv. */
747 if (displayname
!= 0 && skip_args
- count_before
== 1)
749 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
752 for (j
= 0; j
< count_before
+ 1; j
++)
754 new[count_before
+ 1] = "-d";
755 new[count_before
+ 2] = displayname
;
756 for (j
= count_before
+ 2; j
<argc
; j
++)
757 new[j
+ 1] = argv
[j
];
761 /* Change --display to -d, when its arg is separate. */
762 else if (displayname
!= 0 && skip_args
> count_before
763 && argv
[count_before
+ 1][1] == '-')
764 argv
[count_before
+ 1] = "-d";
766 /* Don't actually discard this arg. */
767 skip_args
= count_before
;
771 if (! noninteractive
)
776 inherited_pgroup
= EMACS_GETPGRP (0);
777 setpgrp (0, getpid ());
780 #if defined (USG5) && defined (INTERRUPT_INPUT)
790 /* Don't catch SIGHUP if dumping. */
797 sigblock (sigmask (SIGHUP
));
798 /* In --batch mode, don't catch SIGHUP if already ignored.
799 That makes nohup work. */
801 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
802 signal (SIGHUP
, fatal_error_signal
);
803 sigunblock (sigmask (SIGHUP
));
808 ! noninteractive
|| initialized
814 /* Don't catch these signals in batch mode if dumping.
815 On some machines, this sets static data that would make
816 signal fail to work right when the dumped Emacs is run. */
817 signal (SIGQUIT
, fatal_error_signal
);
818 signal (SIGILL
, fatal_error_signal
);
819 signal (SIGTRAP
, fatal_error_signal
);
821 signal (SIGABRT
, fatal_error_signal
);
824 signal (SIGHWE
, fatal_error_signal
);
827 signal (SIGPRE
, fatal_error_signal
);
830 signal (SIGORE
, fatal_error_signal
);
833 signal (SIGUME
, fatal_error_signal
);
836 signal (SIGDLK
, fatal_error_signal
);
839 signal (SIGCPULIM
, fatal_error_signal
);
842 /* This is missing on some systems - OS/2, for example. */
843 signal (SIGIOT
, fatal_error_signal
);
846 signal (SIGEMT
, fatal_error_signal
);
848 signal (SIGFPE
, fatal_error_signal
);
850 signal (SIGBUS
, fatal_error_signal
);
852 signal (SIGSEGV
, fatal_error_signal
);
854 signal (SIGSYS
, fatal_error_signal
);
856 signal (SIGTERM
, fatal_error_signal
);
858 signal (SIGXCPU
, fatal_error_signal
);
861 signal (SIGXFSZ
, fatal_error_signal
);
865 /* This just means available memory is getting low. */
866 signal (SIGDANGER
, memory_warning_signal
);
870 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
871 signal (SIGXCPU
, fatal_error_signal
);
873 signal (SIGIOINT
, fatal_error_signal
);
875 signal (SIGGRANT
, fatal_error_signal
);
876 signal (SIGRETRACT
, fatal_error_signal
);
877 signal (SIGSOUND
, fatal_error_signal
);
878 signal (SIGMSG
, fatal_error_signal
);
882 noninteractive1
= noninteractive
;
884 /* Perform basic initializations (not merely interning symbols) */
891 init_charset_once ();
893 init_syntax_once (); /* Create standard syntax table. */
894 init_category_once (); /* Create standard category table. */
895 /* Must be done before init_buffer */
896 init_casetab_once ();
897 init_buffer_once (); /* Create buffer table and some buffers */
898 init_minibuf_once (); /* Create list of minibuffers */
899 /* Must precede init_window_once */
900 init_window_once (); /* Init the window system */
906 running_asynch_code
= 0;
909 /* Call early 'cause init_environment needs it. */
911 /* Set defaults for several environment variables. */
913 init_environment (argc
, argv
, skip_args
);
919 /* Initialize environment from registry settings. */
921 init_ntproc (); /* must precede init_editfns */
924 /* egetenv is a pretty low-level facility, which may get called in
925 many circumstances; it seems flimsy to put off initializing it
926 until calling init_callproc. */
927 set_process_environment ();
928 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
929 if this is not done. Do it after set_process_environment so that we
930 don't pollute Vprocess_environment. */
935 init_buffer (); /* Init default directory of main buffer */
937 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
938 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
942 /* Erase any pre-dump messages in the message log, to avoid confusion */
943 Lisp_Object old_log_max
;
944 old_log_max
= Vmessage_log_max
;
945 XSETFASTINT (Vmessage_log_max
, 0);
946 message_dolog ("", 0, 1);
947 Vmessage_log_max
= old_log_max
;
950 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
956 init_vms_input ();/* init_display calls get_frame_size, that needs this */
958 init_display (); /* Determine terminal type. init_sys_modes uses results */
960 init_keyboard (); /* This too must precede init_sys_modes */
962 init_vmsproc (); /* And this too. */
964 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
968 #ifdef LISP_FLOAT_TYPE
976 /* Intern the names of all standard functions and variables; define standard keys */
980 /* The basic levels of Lisp must come first */
981 /* And data must come first of all
982 for the sake of symbols like error-message */
995 syms_of_casefiddle ();
1002 #ifndef NO_DIR_LIBRARY
1004 #endif /* not NO_DIR_LIBRARY */
1010 syms_of_coding (); /* This should be after syms_of_fileio. */
1011 #ifdef CLASH_DETECTION
1012 syms_of_filelock ();
1013 #endif /* CLASH_DETECTION */
1016 syms_of_keyboard ();
1021 syms_of_mocklisp ();
1029 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1030 syms_of_textprop ();
1036 #endif /* WINDOWSNT */
1039 #ifdef HAVE_X_WINDOWS
1046 #endif /* HAVE_X_WINDOWS */
1056 syms_of_w32faces ();
1057 syms_of_w32select ();
1059 #endif /* HAVE_NTGUI */
1069 keys_of_casefiddle ();
1072 keys_of_keyboard ();
1083 /* Handle -l loadup-and-dump, args passed by Makefile. */
1084 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1085 Vtop_level
= Fcons (intern ("load"),
1086 Fcons (build_string (file
), Qnil
));
1088 /* Unless next switch is -nl, load "loadup.el" first thing. */
1089 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
1090 Vtop_level
= Fcons (intern ("load"),
1091 Fcons (build_string ("loadup.el"), Qnil
));
1092 #endif /* CANNOT_DUMP */
1099 /* If the execution TZ happens to be the same as the dump TZ,
1100 change it to some other value and then change it back,
1101 to force the underlying implementation to reload the TZ info.
1102 This is needed on implementations that load TZ info from files,
1103 since the TZ file contents may differ between dump and execution. */
1104 char *tz
= getenv ("TZ");
1105 if (tz
&& !strcmp (tz
, dump_tz
))
1115 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1116 FreeBSD. It might work on some other systems too.
1117 Give it a try and tell me if it works on your system. */
1122 extern void _mcleanup ();
1124 extern Lisp_Object
Fredraw_frame ();
1126 /* This uses Fredraw_frame because that function
1127 comes first in the Emacs executable.
1128 It might be better to use something that gives
1129 the start of the text segment, but start_of_text
1130 is not defined on all systems now. */
1131 monstartup (Fredraw_frame
, &etext
);
1140 #ifdef LOCALTIME_CACHE
1141 /* Some versions of localtime have a bug. They cache the value of the time
1142 zone rather than looking it up every time. Since localtime() is
1143 called to bolt the undumping time into the undumped emacs, this
1144 results in localtime ignoring the TZ environment variable.
1145 This flushes the new TZ value into localtime. */
1147 #endif /* defined (LOCALTIME_CACHE) */
1149 /* Enter editor command loop. This never returns. */
1154 /* Sort the args so we can find the most important ones
1155 at the beginning of argv. */
1157 /* First, here's a table of all the standard options. */
1159 struct standard_args
1167 struct standard_args standard_args
[] =
1169 { "-version", "--version", 110, 0 },
1170 { "-help", "--help", 110, 0 },
1171 { "-nl", "--no-shared-memory", 100, 0 },
1173 { "-map", "--map-data", 100, 0 },
1175 { "-t", "--terminal", 90, 1 },
1176 { "-d", "--display", 80, 1 },
1177 { "-display", 0, 80, 1 },
1178 { "-nw", "--no-windows", 70, 0 },
1179 { "-batch", "--batch", 60, 0 },
1180 { "-q", "--no-init-file", 50, 0 },
1181 { "-no-init-file", 0, 50, 0 },
1182 { "-no-site-file", "--no-site-file", 40, 0 },
1183 { "-u", "--user", 30, 1 },
1184 { "-user", 0, 30, 1 },
1185 { "-debug-init", "--debug-init", 20, 0 },
1186 { "-i", "--icon-type", 15, 0 },
1187 { "-itype", 0, 15, 0 },
1188 { "-iconic", "--iconic", 15, 0 },
1189 { "-bg", "--background-color", 10, 1 },
1190 { "-background", 0, 10, 1 },
1191 { "-fg", "--foreground-color", 10, 1 },
1192 { "-foreground", 0, 10, 1 },
1193 { "-bd", "--border-color", 10, 1 },
1194 { "-bw", "--border-width", 10, 1 },
1195 { "-ib", "--internal-border", 10, 1 },
1196 { "-ms", "--mouse-color", 10, 1 },
1197 { "-cr", "--cursor-color", 10, 1 },
1198 { "-fn", "--font", 10, 1 },
1199 { "-font", 0, 10, 1 },
1200 { "-g", "--geometry", 10, 1 },
1201 { "-geometry", 0, 10, 1 },
1202 { "-T", "--title", 10, 1 },
1203 { "-title", 0, 10, 1 },
1204 { "-name", "--name", 10, 1 },
1205 { "-xrm", "--xrm", 10, 1 },
1206 { "-r", "--reverse-video", 5, 0 },
1208 { "-reverse", 0, 5, 0 },
1209 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1210 { "-vb", "--vertical-scroll-bars", 5, 0 },
1211 /* These have the same priority as ordinary file name args,
1212 so they are not reordered with respect to those. */
1213 { "-L", "--directory", 0, 1 },
1214 { "-directory", 0, 0, 1 },
1215 { "-l", "--load", 0, 1 },
1216 { "-load", 0, 0, 1 },
1217 { "-f", "--funcall", 0, 1 },
1218 { "-funcall", 0, 0, 1 },
1219 { "-eval", "--eval", 0, 1 },
1220 { "-find-file", "--find-file", 0, 1 },
1221 { "-visit", "--visit", 0, 1 },
1222 { "-insert", "--insert", 0, 1 },
1223 /* This should be processed after ordinary file name args and the like. */
1224 { "-kill", "--kill", -10, 0 },
1227 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1228 so that the highest priority ones come first.
1229 Do not change the order of elements of equal priority.
1230 If an option takes an argument, keep it and its argument together. */
1233 sort_args (argc
, argv
)
1237 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1238 /* For each element of argv,
1239 the corresponding element of options is:
1240 0 for an option that takes no arguments,
1241 1 for an option that takes one argument, etc.
1242 -1 for an ordinary non-option argument. */
1243 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1244 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1248 int end_of_options
= argc
;
1250 /* Categorize all the options,
1251 and figure out which argv elts are option arguments. */
1252 for (from
= 1; from
< argc
; from
++)
1256 if (argv
[from
][0] == '-')
1261 /* If we have found "--", don't consider
1262 any more arguments as options. */
1263 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1265 /* Leave the "--", and everything following it, at the end. */
1266 for (; from
< argc
; from
++)
1268 priority
[from
] = -100;
1274 /* Look for a match with a known old-fashioned option. */
1275 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1276 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1278 options
[from
] = standard_args
[i
].nargs
;
1279 priority
[from
] = standard_args
[i
].priority
;
1280 if (from
+ standard_args
[i
].nargs
>= argc
)
1281 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1282 from
+= standard_args
[i
].nargs
;
1286 /* Look for a match with a known long option.
1287 MATCH is -1 if no match so far, -2 if two or more matches so far,
1288 >= 0 (the table index of the match) if just one match so far. */
1289 if (argv
[from
][1] == '-')
1292 thislen
= strlen (argv
[from
]);
1293 equals
= index (argv
[from
], '=');
1295 thislen
= equals
- argv
[from
];
1298 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1299 if (standard_args
[i
].longname
1300 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1309 /* If we found exactly one match, use that. */
1312 options
[from
] = standard_args
[match
].nargs
;
1313 priority
[from
] = standard_args
[match
].priority
;
1314 /* If --OPTION=VALUE syntax is used,
1315 this option uses just one argv element. */
1318 if (from
+ options
[from
] >= argc
)
1319 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1320 from
+= options
[from
];
1327 /* Copy the arguments, in order of decreasing priority, to NEW. */
1332 int best_priority
= -9999;
1334 /* Find the highest priority remaining option.
1335 If several have equal priority, take the first of them. */
1336 for (from
= 1; from
< argc
; from
++)
1338 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1340 best_priority
= priority
[from
];
1343 /* Skip option arguments--they are tied to the options. */
1344 if (options
[from
] > 0)
1345 from
+= options
[from
];
1351 /* Copy the highest priority remaining option, with its args, to NEW. */
1352 new[to
++] = argv
[best
];
1353 for (i
= 0; i
< options
[best
]; i
++)
1354 new[to
++] = argv
[best
+ i
+ 1];
1356 /* Clear out this option in ARGV. */
1358 for (i
= 0; i
< options
[best
]; i
++)
1359 argv
[best
+ i
+ 1] = 0;
1362 bcopy (new, argv
, sizeof (char *) * argc
);
1369 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1370 "Exit the Emacs job and kill it.\n\
1371 If ARG is an integer, return ARG as the exit program code.\n\
1372 If ARG is a string, stuff it as keyboard input.\n\n\
1373 The value of `kill-emacs-hook', if not void,\n\
1374 is a list of functions (of no args),\n\
1375 all of which are called before Emacs is actually killed.")
1379 Lisp_Object hook
, hook1
;
1381 struct gcpro gcpro1
;
1388 if (!NILP (Vrun_hooks
) && !noninteractive
)
1389 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1393 /* Is it really necessary to do this deassign
1394 when we are going to exit anyway? */
1399 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1401 /* If we have an auto-save list file,
1402 kill it because we are exiting Emacs deliberately (not crashing).
1403 Do it after shut_down_emacs, which does an auto-save. */
1404 if (STRINGP (Vauto_save_list_file_name
))
1405 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1407 exit (INTEGERP (arg
) ? XINT (arg
)
1418 /* Perform an orderly shutdown of Emacs. Autosave any modified
1419 buffers, kill any child processes, clean up the terminal modes (if
1420 we're in the foreground), and other stuff like that. Don't perform
1421 any redisplay; this may be called when Emacs is shutting down in
1422 the background, or after its X connection has died.
1424 If SIG is a signal number, print a message for it.
1426 This is called by fatal signal handlers, X protocol error handlers,
1430 shut_down_emacs (sig
, no_x
, stuff
)
1434 /* Prevent running of hooks from now on. */
1437 /* If we are controlling the terminal, reset terminal modes */
1438 #ifdef EMACS_HAVE_TTY_PGRP
1440 int pgrp
= EMACS_GETPGRP (0);
1443 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1448 if (sig
&& sig
!= SIGTERM
)
1449 fprintf (stderr
, "Fatal error (%d).", sig
);
1457 stuff_buffered_input (stuff
);
1459 kill_buffer_processes (Qnil
);
1460 Fdo_auto_save (Qt
, Qnil
);
1462 #ifdef CLASH_DETECTION
1463 unlock_all_files ();
1467 kill_vms_processes ();
1470 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1471 #ifdef HAVE_X_WINDOWS
1472 /* It's not safe to call intern here. Maybe we are crashing. */
1473 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1474 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1475 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1477 Fx_close_current_connection ();
1478 #endif /* HAVE_X_WINDOWS */
1482 /* There is a tendency for a SIGIO signal to arrive within exit,
1483 and cause a SIGHUP because the input descriptor is already closed. */
1485 signal (SIGIO
, SIG_IGN
);
1503 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1504 "Dump current state of Emacs into data file FILENAME.\n\
1505 This function exists on systems that use HAVE_SHM.")
1507 Lisp_Object filename
;
1509 extern char my_edata
[];
1512 CHECK_STRING (filename
, 0);
1513 filename
= Fexpand_file_name (filename
, Qnil
);
1516 Vpurify_flag
= Qnil
;
1519 /* Tell malloc where start of impure now is */
1520 /* Also arrange for warnings when nearly out of space. */
1521 #ifndef SYSTEM_MALLOC
1522 memory_warnings (my_edata
, malloc_warning
);
1524 map_out_data (XSTRING (filename
)->data
);
1531 #else /* not HAVE_SHM */
1533 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1534 "Dump current state of Emacs into executable file FILENAME.\n\
1535 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1536 This is used in the file `loadup.el' when building Emacs.\n\
1538 You must run Emacs in batch mode in order to dump it.")
1540 Lisp_Object filename
, symfile
;
1542 extern char my_edata
[];
1545 int count
= specpdl_ptr
- specpdl
;
1547 if (! noninteractive
)
1548 error ("Dumping Emacs works only in batch mode");
1550 /* Bind `command-line-processed' to nil before dumping,
1551 so that the dumped Emacs will process its command line
1552 and set up to work with X windows if appropriate. */
1553 symbol
= intern ("command-line-process");
1554 specbind (symbol
, Qnil
);
1556 CHECK_STRING (filename
, 0);
1557 filename
= Fexpand_file_name (filename
, Qnil
);
1558 if (!NILP (symfile
))
1560 CHECK_STRING (symfile
, 0);
1561 if (XSTRING (symfile
)->size
)
1562 symfile
= Fexpand_file_name (symfile
, Qnil
);
1566 Vpurify_flag
= Qnil
;
1569 set_time_zone_rule (dump_tz
);
1570 #ifndef LOCALTIME_CACHE
1571 /* Force a tz reload, since set_time_zone_rule doesn't. */
1578 mapout_data (XSTRING (filename
)->data
);
1580 /* Tell malloc where start of impure now is */
1581 /* Also arrange for warnings when nearly out of space. */
1582 #ifndef SYSTEM_MALLOC
1584 /* On Windows, this was done before dumping, and that once suffices.
1585 Meanwhile, my_edata is not valid on Windows. */
1586 memory_warnings (my_edata
, malloc_warning
);
1587 #endif /* not WINDOWSNT */
1589 #ifdef DOUG_LEA_MALLOC
1590 malloc_state_ptr
= malloc_get_state ();
1592 unexec (XSTRING (filename
)->data
,
1593 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1594 #ifdef DOUG_LEA_MALLOC
1595 free (malloc_state_ptr
);
1597 #endif /* not VMS */
1601 return unbind_to (count
, Qnil
);
1604 #endif /* not HAVE_SHM */
1606 #endif /* not CANNOT_DUMP */
1613 decode_env_path (evarname
, defalt
)
1614 char *evarname
, *defalt
;
1616 register char *path
, *p
;
1617 Lisp_Object lpath
, element
, tem
;
1619 /* It's okay to use getenv here, because this function is only used
1620 to initialize variables when Emacs starts up, and isn't called
1623 path
= (char *) getenv (evarname
);
1629 /* Ensure values from the environment use the proper directory separator. */
1632 p
= alloca (strlen (path
) + 1);
1636 if ('/' == DIRECTORY_SEP
)
1637 dostounix_filename (path
);
1639 unixtodos_filename (path
);
1645 p
= index (path
, SEPCHAR
);
1646 if (!p
) p
= path
+ strlen (path
);
1647 element
= (p
- path
? make_string (path
, p
- path
)
1648 : build_string ("."));
1650 /* Add /: to the front of the name
1651 if it would otherwise be treated as magic. */
1652 tem
= Ffind_file_name_handler (element
, Qt
);
1654 element
= concat2 (build_string ("/:"), element
);
1656 lpath
= Fcons (element
, lpath
);
1662 return Fnreverse (lpath
);
1667 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1668 staticpro (&Qfile_name_handler_alist
);
1672 defsubr (&Sdump_emacs_data
);
1674 defsubr (&Sdump_emacs
);
1678 defsubr (&Skill_emacs
);
1680 defsubr (&Sinvocation_name
);
1681 defsubr (&Sinvocation_directory
);
1683 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1684 "Args passed by shell to Emacs, as a list of strings.");
1686 DEFVAR_LISP ("system-type", &Vsystem_type
,
1687 "Value is symbol indicating type of operating system you are using.");
1688 Vsystem_type
= intern (SYSTEM_TYPE
);
1690 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1691 "Value is string indicating configuration Emacs was built for.");
1692 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1694 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1695 "String containing the configuration options Emacs was built with.");
1696 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1698 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1699 "Non-nil means Emacs is running without interactive terminal.");
1701 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1702 "Hook to be run whenever kill-emacs is called.\n\
1703 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1704 in other similar situations), functions placed on this hook should not\n\
1705 expect to be able to interact with the user. To ask for confirmation,\n\
1706 see `kill-emacs-query-functions' instead.");
1707 Vkill_emacs_hook
= Qnil
;
1709 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1710 "Priority for Emacs to run at.\n\
1711 This value is effective only if set before Emacs is dumped,\n\
1712 and only if the Emacs executable is installed with setuid to permit\n\
1713 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1714 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1715 before you compile Emacs, to enable the code for this feature.");
1718 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1719 "The program name that was used to run Emacs.\n\
1720 Any directory names are omitted.");
1722 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1723 "The directory in which the Emacs executable was found, to run it.\n\
1724 The value is nil if that directory's name is not known.");
1726 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1727 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1728 This is non-nil when we can't find those directories in their standard\n\
1729 installed locations, but we can find them\n\
1730 near where the Emacs executable was found.");
1731 Vinstallation_directory
= Qnil
;