1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,1998 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"
45 #include "blockinput.h"
46 #include "syssignal.h"
48 #include "termhooks.h"
53 #include <sys/resource.h>
60 extern void malloc_warning ();
61 extern void set_time_zone_rule ();
62 extern char *index ();
63 extern char *strerror ();
65 /* Command line args from shell, as list of strings */
66 Lisp_Object Vcommand_line_args
;
68 /* The name under which Emacs was invoked, with any leading directory
70 Lisp_Object Vinvocation_name
;
72 /* The directory name from which Emacs was invoked. */
73 Lisp_Object Vinvocation_directory
;
75 /* The directory name in which to find subdirs such as lisp and etc.
76 nil means get them only from PATH_LOADSEARCH. */
77 Lisp_Object Vinstallation_directory
;
79 /* Hook run by `kill-emacs' before it does really anything. */
80 Lisp_Object Vkill_emacs_hook
;
83 /* Hooks for signal USR1 and USR2 handing */
84 Lisp_Object Vsignal_USR1_hook
;
86 Lisp_Object Vsignal_USR2_hook
;
90 /* Search path separator. */
91 Lisp_Object Vpath_separator
;
93 /* Set nonzero after Emacs has started up the first time.
94 Prevents reinitialization of the Lisp world and keymaps
95 on subsequent starts. */
98 #ifdef DOUG_LEA_MALLOC
99 /* Preserves a pointer to the memory allocated that copies that
100 static data inside glibc's malloc. */
101 void *malloc_state_ptr
;
102 /* From glibc, a routine that returns a copy of the malloc internal state. */
103 extern void *malloc_get_state ();
104 /* From glibc, a routine that overwrites the malloc internal state. */
105 extern void malloc_set_state ();
106 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
107 dumping. Used to work around a bug in glibc's malloc. */
108 int malloc_using_checking
;
111 /* Variable whose value is symbol giving operating system type. */
112 Lisp_Object Vsystem_type
;
114 /* Variable whose value is string giving configuration built for. */
115 Lisp_Object Vsystem_configuration
;
117 /* Variable whose value is string giving configuration options,
118 for use when reporting bugs. */
119 Lisp_Object Vsystem_configuration_options
;
121 Lisp_Object Qfile_name_handler_alist
;
123 /* If non-zero, emacs should not attempt to use an window-specific code,
124 but instead should use the virtual terminal under which it was started */
125 int inhibit_window_system
;
127 /* If nonzero, set Emacs to run at this priority. This is also used
128 in child_setup and sys_suspend to make sure subshells run at normal
129 priority; Those functions have their own extern declaration. */
132 /* If non-zero a filter or a sentinel is running. Tested to save the match
133 data on the first attempt to change it inside asynchronous code. */
134 int running_asynch_code
;
138 extern int inherited_pgroup
;
141 #ifdef HAVE_X_WINDOWS
142 /* If non-zero, -d was specified, meaning we're using some window system. */
146 /* An address near the bottom of the stack.
147 Tells GC how to save a copy of the stack. */
150 #ifdef HAVE_WINDOW_SYSTEM
151 extern Lisp_Object Vwindow_system
;
152 #endif /* HAVE_WINDOW_SYSTEM */
154 extern Lisp_Object Vauto_save_list_file_name
;
156 #ifdef USG_SHARED_LIBRARIES
157 /* If nonzero, this is the place to put the end of the writable segment
160 unsigned int bss_end
= 0;
163 /* Nonzero means running Emacs without interactive terminal. */
167 /* Value of Lisp variable `noninteractive'.
168 Normally same as C variable `noninteractive'
169 but nothing terrible happens if user sets this one. */
173 /* Save argv and argc. */
177 static void sort_args ();
178 void syms_of_emacs ();
180 /* Signal code for the fatal signal that was received */
181 int fatal_error_code
;
183 /* Nonzero if handling a fatal error already */
184 int fatal_error_in_progress
;
188 handle_USR1_signal (sig
)
191 struct input_event buf
;
193 buf
.kind
= user_signal
;
195 buf
.frame_or_window
= Fselected_frame ();
199 kbd_buffer_store_event (&buf
);
205 handle_USR2_signal (sig
)
208 struct input_event buf
;
210 buf
.kind
= user_signal
;
212 buf
.frame_or_window
= Fselected_frame ();
216 kbd_buffer_store_event (&buf
);
220 /* Handle bus errors, illegal instruction, etc. */
222 fatal_error_signal (sig
)
225 fatal_error_code
= sig
;
226 signal (sig
, SIG_DFL
);
228 TOTALLY_UNBLOCK_INPUT
;
230 /* If fatal error occurs in code below, avoid infinite recursion. */
231 if (! fatal_error_in_progress
)
233 fatal_error_in_progress
= 1;
235 shut_down_emacs (sig
, 0, Qnil
);
239 LIB$
STOP (SS$_ABORT
);
241 /* Signal the same code; this time it will really be fatal.
242 Remember that since we're in a signal handler, the signal we're
243 going to send is probably blocked, so we have to unblock it if we
244 want to really receive it. */
246 sigunblock (sigmask (fatal_error_code
));
248 kill (getpid (), fatal_error_code
);
254 /* Handler for SIGDANGER. */
256 memory_warning_signal (sig
)
259 signal (sig
, memory_warning_signal
);
261 malloc_warning ("Operating system warns that virtual memory is running low.\n");
263 /* It might be unsafe to call do_auto_save now. */
264 force_auto_save_soon ();
268 /* We define abort, rather than using it from the library,
269 so that GDB can return from a breakpoint here.
270 MSDOS has its own definition on msdos.c */
272 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
276 kill (getpid (), SIGABRT
);
277 /* This shouldn't be executed, but it prevents a warning. */
283 /* Code for dealing with Lisp access to the Unix command line */
286 init_cmdargs (argc
, argv
, skip_args
)
292 Lisp_Object name
, dir
, tem
;
293 int count
= specpdl_ptr
- specpdl
;
294 Lisp_Object raw_name
;
299 raw_name
= build_string (argv
[0]);
301 /* Add /: to the front of the name
302 if it would otherwise be treated as magic. */
303 tem
= Ffind_file_name_handler (raw_name
, Qt
);
305 raw_name
= concat2 (build_string ("/:"), raw_name
);
307 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
308 Vinvocation_directory
= Ffile_name_directory (raw_name
);
310 /* If we got no directory in argv[0], search PATH to find where
311 Emacs actually came from. */
312 if (NILP (Vinvocation_directory
))
315 int yes
= openp (Vexec_path
, Vinvocation_name
,
316 EXEC_SUFFIXES
, &found
, 1);
319 /* Add /: to the front of the name
320 if it would otherwise be treated as magic. */
321 tem
= Ffind_file_name_handler (found
, Qt
);
323 found
= concat2 (build_string ("/:"), found
);
324 Vinvocation_directory
= Ffile_name_directory (found
);
328 if (!NILP (Vinvocation_directory
)
329 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
330 /* Emacs was started with relative path, like ./emacs.
332 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
334 Vinstallation_directory
= Qnil
;
336 if (!NILP (Vinvocation_directory
))
338 dir
= Vinvocation_directory
;
339 name
= Fexpand_file_name (Vinvocation_name
, dir
);
342 Lisp_Object tem
, lib_src_exists
;
343 Lisp_Object etc_exists
, info_exists
;
345 /* See if dir contains subdirs for use by Emacs.
346 Check for the ones that would exist in a build directory,
347 not including lisp and info. */
348 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
349 lib_src_exists
= Ffile_exists_p (tem
);
352 /* MSDOS installations frequently remove lib-src, but we still
353 must set installation-directory, or else info won't find
354 its files (it uses the value of installation-directory). */
355 tem
= Fexpand_file_name (build_string ("info"), dir
);
356 info_exists
= Ffile_exists_p (tem
);
361 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
363 tem
= Fexpand_file_name (build_string ("etc"), dir
);
364 etc_exists
= Ffile_exists_p (tem
);
365 if (!NILP (etc_exists
))
367 Vinstallation_directory
368 = Ffile_name_as_directory (dir
);
373 /* See if dir's parent contains those subdirs. */
374 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
375 lib_src_exists
= Ffile_exists_p (tem
);
379 /* See the MSDOS commentary above. */
380 tem
= Fexpand_file_name (build_string ("../info"), dir
);
381 info_exists
= Ffile_exists_p (tem
);
386 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
388 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
389 etc_exists
= Ffile_exists_p (tem
);
390 if (!NILP (etc_exists
))
392 tem
= Fexpand_file_name (build_string (".."), dir
);
393 Vinstallation_directory
394 = Ffile_name_as_directory (tem
);
399 /* If the Emacs executable is actually a link,
400 next try the dir that the link points into. */
401 tem
= Ffile_symlink_p (name
);
404 name
= Fexpand_file_name (tem
, dir
);
405 dir
= Ffile_name_directory (name
);
412 Vcommand_line_args
= Qnil
;
414 for (i
= argc
- 1; i
>= 0; i
--)
416 if (i
== 0 || i
> skip_args
)
418 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
421 unbind_to (count
, Qnil
);
424 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
425 "Return the program name that was used to run Emacs.\n\
426 Any directory names are omitted.")
429 return Fcopy_sequence (Vinvocation_name
);
432 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
434 "Return the directory name in which the Emacs executable was located")
437 return Fcopy_sequence (Vinvocation_directory
);
442 #ifdef LINK_CRTL_SHARE
443 #ifdef SHARABLE_LIB_BUG
444 extern noshare
char **environ
;
445 #endif /* SHARABLE_LIB_BUG */
446 #endif /* LINK_CRTL_SHARE */
450 /* A valid but unlikely value for the TZ environment value.
451 It is OK (though a bit slower) if the user actually chooses this value. */
452 static char dump_tz
[] = "UtC0";
455 #ifndef ORDINARY_LINK
456 /* We don't include crtbegin.o and crtend.o in the link,
457 so these functions and variables might be missed.
458 Provide dummy definitions to avoid error.
459 (We don't have any real constructors or destructors.) */
461 #ifndef GCC_CTORS_IN_LIBC
462 void __do_global_ctors ()
464 void __do_global_ctors_aux ()
466 void __do_global_dtors ()
468 /* Linux has a bug in its library; avoid an error. */
470 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
472 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
473 #endif /* GCC_CTORS_IN_LIBC */
476 #endif /* __GNUC__ */
477 #endif /* ORDINARY_LINK */
479 /* Test whether the next argument in ARGV matches SSTR or a prefix of
480 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
481 (the argument is supposed to have a value) store in *VALPTR either
482 the next argument or the portion of this one after the equal sign.
483 ARGV is read starting at position *SKIPPTR; this index is advanced
484 by the number of arguments used.
486 Too bad we can't just use getopt for all of this, but we don't have
487 enough information to do it right. */
490 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
503 /* Don't access argv[argc]; give up in advance. */
504 if (argc
<= *skipptr
+ 1)
507 arg
= argv
[*skipptr
+1];
510 if (strcmp (arg
, sstr
) == 0)
514 *valptr
= argv
[*skipptr
+2];
521 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
522 ? p
- arg
: strlen (arg
));
523 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
525 else if (valptr
== NULL
)
536 else if (argv
[*skipptr
+2] != NULL
)
538 *valptr
= argv
[*skipptr
+2];
548 #ifdef DOUG_LEA_MALLOC
550 /* malloc can be invoked even before main (e.g. by the dynamic
551 linker), so the dumped malloc state must be restored as early as
552 possible using this special hook. */
555 malloc_initialize_hook ()
557 extern char **environ
;
561 if (!malloc_using_checking
)
562 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
563 ignored if the heap to be restored was constructed without
564 malloc checking. Can't use unsetenv, since that calls malloc. */
568 for (p
= environ
; *p
; p
++)
569 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
578 malloc_set_state (malloc_state_ptr
);
579 free (malloc_state_ptr
);
582 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
585 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
587 #endif /* DOUG_LEA_MALLOC */
591 main (argc
, argv
, envp
)
596 char stack_bottom_variable
;
600 #ifdef HAVE_SETRLIMIT
605 #ifdef LINUX_SBRK_BUG
609 #ifdef RUN_TIME_REMAP
611 run_time_remap (argv
[0]);
614 sort_args (argc
, argv
);
616 while (argv
[argc
]) argc
++;
618 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
619 /* We don't know the version number unless this is a dumped Emacs.
620 So ignore --version otherwise. */
624 tem
= Fsymbol_value (intern ("emacs-version"));
627 fprintf (stderr
, "Invalid value of `emacs-version'\n");
632 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
633 printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
634 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
635 printf ("You may redistribute copies of Emacs\n");
636 printf ("under the terms of the GNU General Public License.\n");
637 printf ("For more information about these matters, ");
638 printf ("see the file named COPYING.\n");
643 /* Map in shared memory, if we are using that. */
645 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
648 /* The shared memory was just restored, which clobbered this. */
654 /* The shared memory was just restored, which clobbered this. */
661 extern int malloc_cookie
;
662 /* This helps out unexnext.c. */
664 if (malloc_jumpstart (malloc_cookie
) != 0)
665 printf ("malloc jumpstart failed!\n");
670 /* If -map specified, map the data file in */
673 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
677 #ifdef LINK_CRTL_SHARE
678 #ifdef SHARABLE_LIB_BUG
679 /* Bletcherous shared libraries! */
681 stdin
= fdopen (0, "r");
683 stdout
= fdopen (1, "w");
685 stderr
= fdopen (2, "w");
688 #endif /* SHARABLE_LIB_BUG */
689 #endif /* LINK_CRTL_SHARE */
692 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
693 /* Extend the stack space available.
694 Don't do that if dumping, since some systems (e.g. DJGPP)
695 might define a smaller stack limit at that time. */
698 && (!noninteractive
|| initialized
)
700 && !getrlimit (RLIMIT_STACK
, &rlim
))
703 extern int re_max_failures
;
704 /* Approximate the amount regex.c needs per unit of re_max_failures. */
705 int ratio
= 20 * sizeof (char *);
706 /* Then add 33% to cover the size of the smaller stacks that regex.c
707 successively allocates and discards, on its way to the maximum. */
709 /* Add in some extra to cover
710 what we're likely to use for other reasons. */
711 newlim
= re_max_failures
* ratio
+ 200000;
713 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
714 stack allocation routine for new process that the allocation
715 fails if stack limit is not on page boundary. So, round up the
716 new limit to page boundary. */
717 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
719 if (newlim
> rlim
.rlim_max
)
721 newlim
= rlim
.rlim_max
;
722 /* Don't let regex.c overflow the stack we have. */
723 re_max_failures
= (newlim
- 200000) / ratio
;
725 if (rlim
.rlim_cur
< newlim
)
726 rlim
.rlim_cur
= newlim
;
728 setrlimit (RLIMIT_STACK
, &rlim
);
730 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
732 /* Record (approximately) where the stack begins. */
733 stack_bottom
= &stack_bottom_variable
;
735 #ifdef USG_SHARED_LIBRARIES
737 brk ((void *)bss_end
);
742 #ifndef SYSTEM_MALLOC
743 /* Arrange to get warning messages as memory fills up. */
744 memory_warnings (0, malloc_warning
);
746 /* Call malloc at least once, to run the initial __malloc_hook.
747 Also call realloc and free for consistency. */
748 free (realloc (malloc (4), 4));
750 /* Arrange to disable interrupt input inside malloc etc. */
751 uninterrupt_malloc ();
752 #endif /* not SYSTEM_MALLOC */
755 /* We do all file input/output as binary files. When we need to translate
756 newlines, we do that manually. */
760 if (!isatty (fileno (stdin
)))
761 setmode (fileno (stdin
), O_BINARY
);
762 if (!isatty (fileno (stdout
)))
765 setmode (fileno (stdout
), O_BINARY
);
767 #else /* not __DJGPP__ >= 2 */
768 (stdin
)->_flag
&= ~_IOTEXT
;
769 (stdout
)->_flag
&= ~_IOTEXT
;
770 (stderr
)->_flag
&= ~_IOTEXT
;
771 #endif /* not __DJGPP__ >= 2 */
774 #ifdef SET_EMACS_PRIORITY
776 nice (emacs_priority
);
778 #endif /* SET_EMACS_PRIORITY */
780 #ifdef EXTRA_INITIALIZE
784 inhibit_window_system
= 0;
786 /* Handle the -t switch, which specifies filename to use as terminal */
790 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
795 result
= open (term
, O_RDWR
, 2 );
798 char *errstring
= strerror (errno
);
799 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
805 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
808 fprintf (stderr
, "Using %s\n", term
);
809 #ifdef HAVE_WINDOW_SYSTEM
810 inhibit_window_system
= 1; /* -t => -nw */
817 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
818 inhibit_window_system
= 1;
820 /* Handle the -batch switch, which means don't do interactive display. */
822 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
825 /* Handle the --help option, which gives a usage message.. */
826 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
829 Usage: %s [--batch] [-t term] [--terminal term]\n\
830 [-d display] [--display display] [-nw] [--no-windows]\n\
831 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
832 [--unibyte] [--multibyte] [--version] [--no-site-file]\n\
833 [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\
834 [--insert file] [+linenum] file-to-visit [--kill]\n\
835 Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\
836 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
840 if (! noninteractive
)
845 inherited_pgroup
= EMACS_GETPGRP (0);
846 setpgrp (0, getpid ());
849 #if defined (USG5) && defined (INTERRUPT_INPUT)
859 /* Don't catch SIGHUP if dumping. */
866 sigblock (sigmask (SIGHUP
));
867 /* In --batch mode, don't catch SIGHUP if already ignored.
868 That makes nohup work. */
870 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
871 signal (SIGHUP
, fatal_error_signal
);
872 sigunblock (sigmask (SIGHUP
));
877 ! noninteractive
|| initialized
883 /* Don't catch these signals in batch mode if dumping.
884 On some machines, this sets static data that would make
885 signal fail to work right when the dumped Emacs is run. */
886 signal (SIGQUIT
, fatal_error_signal
);
887 signal (SIGILL
, fatal_error_signal
);
888 signal (SIGTRAP
, fatal_error_signal
);
890 signal (SIGUSR1
, handle_USR1_signal
);
892 signal (SIGUSR2
, handle_USR2_signal
);
896 signal (SIGABRT
, fatal_error_signal
);
899 signal (SIGHWE
, fatal_error_signal
);
902 signal (SIGPRE
, fatal_error_signal
);
905 signal (SIGORE
, fatal_error_signal
);
908 signal (SIGUME
, fatal_error_signal
);
911 signal (SIGDLK
, fatal_error_signal
);
914 signal (SIGCPULIM
, fatal_error_signal
);
917 /* This is missing on some systems - OS/2, for example. */
918 signal (SIGIOT
, fatal_error_signal
);
921 signal (SIGEMT
, fatal_error_signal
);
923 signal (SIGFPE
, fatal_error_signal
);
925 signal (SIGBUS
, fatal_error_signal
);
927 signal (SIGSEGV
, fatal_error_signal
);
929 signal (SIGSYS
, fatal_error_signal
);
931 signal (SIGTERM
, fatal_error_signal
);
933 signal (SIGXCPU
, fatal_error_signal
);
936 signal (SIGXFSZ
, fatal_error_signal
);
940 /* This just means available memory is getting low. */
941 signal (SIGDANGER
, memory_warning_signal
);
945 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
946 signal (SIGXCPU
, fatal_error_signal
);
948 signal (SIGIOINT
, fatal_error_signal
);
950 signal (SIGGRANT
, fatal_error_signal
);
951 signal (SIGRETRACT
, fatal_error_signal
);
952 signal (SIGSOUND
, fatal_error_signal
);
953 signal (SIGMSG
, fatal_error_signal
);
957 noninteractive1
= noninteractive
;
959 /* Perform basic initializations (not merely interning symbols) */
966 init_charset_once ();
968 init_syntax_once (); /* Create standard syntax table. */
969 init_category_once (); /* Create standard category table. */
970 /* Must be done before init_buffer */
971 init_casetab_once ();
972 init_buffer_once (); /* Create buffer table and some buffers */
973 init_minibuf_once (); /* Create list of minibuffers */
974 /* Must precede init_window_once */
976 /* Call syms_of_xfaces before init_window_once because that
977 function creates Vterminal_frame. Termcap frames now use
978 faces, and the face implementation uses some symbols as
984 init_window_once (); /* Init the window system */
985 init_fileio_once (); /* Must precede any path manipulation. */
992 #ifdef CLASH_DETECTION
995 running_asynch_code
= 0;
997 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
998 but not while dumping. */
1001 ! noninteractive
|| initialized
1007 int inhibit_unibyte
= 0;
1009 /* --multibyte overrides EMACS_UNIBYTE. */
1010 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1011 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1012 inhibit_unibyte
= 1;
1014 /* --unibyte requests that we set up to do everything with single-byte
1015 buffers and strings. We need to handle this before calling
1016 init_lread, init_editfns and other places that generate Lisp strings
1017 from text in the environment. */
1018 /* Actually this shouldn't be needed as of 20.4 in a generally
1019 unibyte environment. As handa says, environment values
1020 aren't now decoded; also existing buffers are now made
1021 unibyte during startup if .emacs sets unibyte. Tested with
1022 8-bit data in environment variables and /etc/passwd, setting
1023 unibyte and Latin-1 in .emacs. -- Dave Love */
1024 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1025 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1026 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1028 Lisp_Object old_log_max
;
1029 Lisp_Object symbol
, tail
;
1031 symbol
= intern ("default-enable-multibyte-characters");
1032 Fset (symbol
, Qnil
);
1036 /* Erase pre-dump messages in *Messages* now so no abort. */
1037 old_log_max
= Vmessage_log_max
;
1038 XSETFASTINT (Vmessage_log_max
, 0);
1039 message_dolog ("", 0, 1, 0);
1040 Vmessage_log_max
= old_log_max
;
1043 for (tail
= Vbuffer_alist
; CONSP (tail
);
1044 tail
= XCONS (tail
)->cdr
)
1048 buffer
= Fcdr (XCONS (tail
)->car
);
1049 /* Verify that all buffers are empty now, as they
1051 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1053 /* It is safe to do this crudely in an empty buffer. */
1054 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1060 = !argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1063 #ifdef HAVE_X_WINDOWS
1064 /* Stupid kludge to catch command-line display spec. We can't
1065 handle this argument entirely in window system dependent code
1066 because we don't even know which window system dependent code
1067 to run until we've recognized this argument. */
1069 char *displayname
= 0;
1071 int count_before
= skip_args
;
1073 /* Skip any number of -d options, but only use the last one. */
1076 int count_before_this
= skip_args
;
1078 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1080 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1085 count_before
= count_before_this
;
1088 /* If we have the form --display=NAME,
1089 convert it into -d name.
1090 This requires inserting a new element into argv. */
1091 if (displayname
!= 0 && skip_args
- count_before
== 1)
1093 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1096 for (j
= 0; j
< count_before
+ 1; j
++)
1098 new[count_before
+ 1] = "-d";
1099 new[count_before
+ 2] = displayname
;
1100 for (j
= count_before
+ 2; j
<argc
; j
++)
1101 new[j
+ 1] = argv
[j
];
1105 /* Change --display to -d, when its arg is separate. */
1106 else if (displayname
!= 0 && skip_args
> count_before
1107 && argv
[count_before
+ 1][1] == '-')
1108 argv
[count_before
+ 1] = "-d";
1110 /* Don't actually discard this arg. */
1111 skip_args
= count_before
;
1115 /* argmatch must not be used after here,
1116 except when bulding temacs
1117 because the -d argument has not been skipped in skip_args. */
1120 /* Call early 'cause init_environment needs it. */
1122 /* Set defaults for several environment variables. */
1124 init_environment (argc
, argv
, skip_args
);
1130 /* Initialize environment from registry settings. */
1131 init_environment (argv
);
1132 init_ntproc (); /* must precede init_editfns */
1135 /* egetenv is a pretty low-level facility, which may get called in
1136 many circumstances; it seems flimsy to put off initializing it
1137 until calling init_callproc. */
1138 set_process_environment ();
1139 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1140 if this is not done. Do it after set_process_environment so that we
1141 don't pollute Vprocess_environment. */
1146 init_buffer (); /* Init default directory of main buffer */
1148 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1149 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1153 /* Erase any pre-dump messages in the message log, to avoid confusion */
1154 Lisp_Object old_log_max
;
1155 old_log_max
= Vmessage_log_max
;
1156 XSETFASTINT (Vmessage_log_max
, 0);
1157 message_dolog ("", 0, 1, 0);
1158 Vmessage_log_max
= old_log_max
;
1161 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1164 /* Intern the names of all standard functions and variables;
1165 define standard keys. */
1169 /* The basic levels of Lisp must come first */
1170 /* And data must come first of all
1171 for the sake of symbols like error-message */
1178 syms_of_floatfns ();
1182 syms_of_bytecode ();
1184 syms_of_casefiddle ();
1186 syms_of_callproc ();
1187 syms_of_category ();
1191 #ifndef NO_DIR_LIBRARY
1193 #endif /* not NO_DIR_LIBRARY */
1199 syms_of_coding (); /* This should be after syms_of_fileio. */
1200 #ifdef CLASH_DETECTION
1201 syms_of_filelock ();
1202 #endif /* CLASH_DETECTION */
1205 syms_of_keyboard ();
1210 syms_of_mocklisp ();
1221 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1222 syms_of_textprop ();
1228 #endif /* WINDOWSNT */
1231 #ifdef HAVE_X_WINDOWS
1238 #endif /* HAVE_X_WINDOWS */
1247 syms_of_w32faces ();
1248 syms_of_w32select ();
1251 #endif /* HAVE_NTGUI */
1261 keys_of_casefiddle ();
1264 keys_of_keyboard ();
1272 if (!noninteractive
)
1275 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1277 init_display (); /* Determine terminal type. init_sys_modes uses results */
1279 init_keyboard (); /* This too must precede init_sys_modes */
1281 init_vmsproc (); /* And this too. */
1283 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1284 #ifdef HAVE_X_WINDOWS
1286 #endif /* HAVE_X_WINDOWS */
1291 #ifdef LISP_FLOAT_TYPE
1305 /* Handle -l loadup, args passed by Makefile. */
1306 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1307 Vtop_level
= Fcons (intern ("load"),
1308 Fcons (build_string (file
), Qnil
));
1310 /* Unless next switch is -nl, load "loadup.el" first thing. */
1312 Vtop_level
= Fcons (intern ("load"),
1313 Fcons (build_string ("loadup.el"), Qnil
));
1314 #endif /* CANNOT_DUMP */
1321 /* If the execution TZ happens to be the same as the dump TZ,
1322 change it to some other value and then change it back,
1323 to force the underlying implementation to reload the TZ info.
1324 This is needed on implementations that load TZ info from files,
1325 since the TZ file contents may differ between dump and execution. */
1326 char *tz
= getenv ("TZ");
1327 if (tz
&& !strcmp (tz
, dump_tz
))
1337 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1338 FreeBSD. It might work on some other systems too.
1339 Give it a try and tell me if it works on your system. */
1344 extern void _mcleanup ();
1346 extern void safe_bcopy ();
1348 /* This uses safe_bcopy because that function comes first in the
1349 Emacs executable. It might be better to use something that
1350 gives the start of the text segment, but start_of_text is not
1351 defined on all systems now. */
1352 monstartup (safe_bcopy
, &etext
);
1361 #ifdef LOCALTIME_CACHE
1362 /* Some versions of localtime have a bug. They cache the value of the time
1363 zone rather than looking it up every time. Since localtime() is
1364 called to bolt the undumping time into the undumped emacs, this
1365 results in localtime ignoring the TZ environment variable.
1366 This flushes the new TZ value into localtime. */
1368 #endif /* defined (LOCALTIME_CACHE) */
1370 /* Enter editor command loop. This never returns. */
1375 /* Sort the args so we can find the most important ones
1376 at the beginning of argv. */
1378 /* First, here's a table of all the standard options. */
1380 struct standard_args
1388 struct standard_args standard_args
[] =
1390 { "-version", "--version", 150, 0 },
1392 { "-nl", "--no-shared-memory", 140, 0 },
1395 { "-map", "--map-data", 130, 0 },
1397 { "-t", "--terminal", 120, 1 },
1398 { "-nw", "--no-windows", 110, 0 },
1399 { "-batch", "--batch", 100, 0 },
1400 { "-help", "--help", 90, 0 },
1401 { "-no-unibyte", "--no-unibyte", 83, 0 },
1402 { "-multibyte", "--multibyte", 82, 0 },
1403 { "-unibyte", "--unibyte", 81, 0 },
1404 { "-no-multibyte", "--no-multibyte", 80, 0 },
1406 { "-nl", "--no-loadup", 70, 0 },
1408 /* -d must come last before the options handled in startup.el. */
1409 { "-d", "--display", 60, 1 },
1410 { "-display", 0, 60, 1 },
1411 /* Now for the options handled in startup.el. */
1412 { "-q", "--no-init-file", 50, 0 },
1413 { "-no-init-file", 0, 50, 0 },
1414 { "-no-site-file", "--no-site-file", 40, 0 },
1415 { "-u", "--user", 30, 1 },
1416 { "-user", 0, 30, 1 },
1417 { "-debug-init", "--debug-init", 20, 0 },
1418 { "-i", "--icon-type", 15, 0 },
1419 { "-itype", 0, 15, 0 },
1420 { "-iconic", "--iconic", 15, 0 },
1421 { "-bg", "--background-color", 10, 1 },
1422 { "-background", 0, 10, 1 },
1423 { "-fg", "--foreground-color", 10, 1 },
1424 { "-foreground", 0, 10, 1 },
1425 { "-bd", "--border-color", 10, 1 },
1426 { "-bw", "--border-width", 10, 1 },
1427 { "-ib", "--internal-border", 10, 1 },
1428 { "-ms", "--mouse-color", 10, 1 },
1429 { "-cr", "--cursor-color", 10, 1 },
1430 { "-fn", "--font", 10, 1 },
1431 { "-font", 0, 10, 1 },
1432 { "-g", "--geometry", 10, 1 },
1433 { "-geometry", 0, 10, 1 },
1434 { "-T", "--title", 10, 1 },
1435 { "-title", 0, 10, 1 },
1436 { "-name", "--name", 10, 1 },
1437 { "-xrm", "--xrm", 10, 1 },
1438 { "-r", "--reverse-video", 5, 0 },
1440 { "-reverse", 0, 5, 0 },
1441 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1442 { "-vb", "--vertical-scroll-bars", 5, 0 },
1443 /* These have the same priority as ordinary file name args,
1444 so they are not reordered with respect to those. */
1445 { "-L", "--directory", 0, 1 },
1446 { "-directory", 0, 0, 1 },
1447 { "-l", "--load", 0, 1 },
1448 { "-load", 0, 0, 1 },
1449 { "-f", "--funcall", 0, 1 },
1450 { "-funcall", 0, 0, 1 },
1451 { "-eval", "--eval", 0, 1 },
1452 { "-find-file", "--find-file", 0, 1 },
1453 { "-visit", "--visit", 0, 1 },
1454 { "-insert", "--insert", 0, 1 },
1455 /* This should be processed after ordinary file name args and the like. */
1456 { "-kill", "--kill", -10, 0 },
1459 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1460 so that the highest priority ones come first.
1461 Do not change the order of elements of equal priority.
1462 If an option takes an argument, keep it and its argument together.
1464 If an option that takes no argument appears more
1465 than once, eliminate all but one copy of it. */
1468 sort_args (argc
, argv
)
1472 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1473 /* For each element of argv,
1474 the corresponding element of options is:
1475 0 for an option that takes no arguments,
1476 1 for an option that takes one argument, etc.
1477 -1 for an ordinary non-option argument. */
1478 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1479 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1481 int incoming_used
= 1;
1484 int end_of_options
= argc
;
1486 /* Categorize all the options,
1487 and figure out which argv elts are option arguments. */
1488 for (from
= 1; from
< argc
; from
++)
1492 if (argv
[from
][0] == '-')
1497 /* If we have found "--", don't consider
1498 any more arguments as options. */
1499 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1501 /* Leave the "--", and everything following it, at the end. */
1502 for (; from
< argc
; from
++)
1504 priority
[from
] = -100;
1510 /* Look for a match with a known old-fashioned option. */
1511 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1512 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1514 options
[from
] = standard_args
[i
].nargs
;
1515 priority
[from
] = standard_args
[i
].priority
;
1516 if (from
+ standard_args
[i
].nargs
>= argc
)
1517 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1518 from
+= standard_args
[i
].nargs
;
1522 /* Look for a match with a known long option.
1523 MATCH is -1 if no match so far, -2 if two or more matches so far,
1524 >= 0 (the table index of the match) if just one match so far. */
1525 if (argv
[from
][1] == '-')
1528 thislen
= strlen (argv
[from
]);
1529 equals
= index (argv
[from
], '=');
1531 thislen
= equals
- argv
[from
];
1534 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1535 if (standard_args
[i
].longname
1536 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1545 /* If we found exactly one match, use that. */
1548 options
[from
] = standard_args
[match
].nargs
;
1549 priority
[from
] = standard_args
[match
].priority
;
1550 /* If --OPTION=VALUE syntax is used,
1551 this option uses just one argv element. */
1554 if (from
+ options
[from
] >= argc
)
1555 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1556 from
+= options
[from
];
1563 /* Copy the arguments, in order of decreasing priority, to NEW. */
1565 while (incoming_used
< argc
)
1568 int best_priority
= -9999;
1570 /* Find the highest priority remaining option.
1571 If several have equal priority, take the first of them. */
1572 for (from
= 1; from
< argc
; from
++)
1574 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1576 best_priority
= priority
[from
];
1579 /* Skip option arguments--they are tied to the options. */
1580 if (options
[from
] > 0)
1581 from
+= options
[from
];
1587 /* Copy the highest priority remaining option, with its args, to NEW.
1588 Unless it is a duplicate of the previous one. */
1589 if (! (options
[best
] == 0
1590 && ! strcmp (new[to
- 1], argv
[best
])))
1592 new[to
++] = argv
[best
];
1593 for (i
= 0; i
< options
[best
]; i
++)
1594 new[to
++] = argv
[best
+ i
+ 1];
1597 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1599 /* Clear out this option in ARGV. */
1601 for (i
= 0; i
< options
[best
]; i
++)
1602 argv
[best
+ i
+ 1] = 0;
1605 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1609 bcopy (new, argv
, sizeof (char *) * argc
);
1616 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1617 "Exit the Emacs job and kill it.\n\
1618 If ARG is an integer, return ARG as the exit program code.\n\
1619 If ARG is a string, stuff it as keyboard input.\n\n\
1620 The value of `kill-emacs-hook', if not void,\n\
1621 is a list of functions (of no args),\n\
1622 all of which are called before Emacs is actually killed.")
1626 Lisp_Object hook
, hook1
;
1628 struct gcpro gcpro1
;
1635 if (!NILP (Vrun_hooks
) && !noninteractive
)
1636 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1640 /* Is it really necessary to do this deassign
1641 when we are going to exit anyway? */
1646 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1648 /* If we have an auto-save list file,
1649 kill it because we are exiting Emacs deliberately (not crashing).
1650 Do it after shut_down_emacs, which does an auto-save. */
1651 if (STRINGP (Vauto_save_list_file_name
))
1652 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1654 exit (INTEGERP (arg
) ? XINT (arg
)
1665 /* Perform an orderly shutdown of Emacs. Autosave any modified
1666 buffers, kill any child processes, clean up the terminal modes (if
1667 we're in the foreground), and other stuff like that. Don't perform
1668 any redisplay; this may be called when Emacs is shutting down in
1669 the background, or after its X connection has died.
1671 If SIG is a signal number, print a message for it.
1673 This is called by fatal signal handlers, X protocol error handlers,
1677 shut_down_emacs (sig
, no_x
, stuff
)
1681 /* Prevent running of hooks from now on. */
1684 /* If we are controlling the terminal, reset terminal modes */
1685 #ifdef EMACS_HAVE_TTY_PGRP
1687 int pgrp
= EMACS_GETPGRP (0);
1690 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1695 if (sig
&& sig
!= SIGTERM
)
1696 fprintf (stderr
, "Fatal error (%d).", sig
);
1704 stuff_buffered_input (stuff
);
1706 kill_buffer_processes (Qnil
);
1707 Fdo_auto_save (Qt
, Qnil
);
1709 #ifdef CLASH_DETECTION
1710 unlock_all_files ();
1714 kill_vms_processes ();
1717 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1718 #ifdef HAVE_X_WINDOWS
1719 /* It's not safe to call intern here. Maybe we are crashing. */
1720 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1721 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1722 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1724 Fx_close_current_connection ();
1725 #endif /* HAVE_X_WINDOWS */
1729 /* There is a tendency for a SIGIO signal to arrive within exit,
1730 and cause a SIGHUP because the input descriptor is already closed. */
1732 signal (SIGIO
, SIG_IGN
);
1739 check_glyph_memory ();
1740 check_message_stack ();
1753 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1754 "Dump current state of Emacs into data file FILENAME.\n\
1755 This function exists on systems that use HAVE_SHM.")
1757 Lisp_Object filename
;
1759 extern char my_edata
[];
1762 CHECK_STRING (filename
, 0);
1763 filename
= Fexpand_file_name (filename
, Qnil
);
1766 Vpurify_flag
= Qnil
;
1769 /* Tell malloc where start of impure now is */
1770 /* Also arrange for warnings when nearly out of space. */
1771 #ifndef SYSTEM_MALLOC
1772 memory_warnings (my_edata
, malloc_warning
);
1774 map_out_data (XSTRING (filename
)->data
);
1781 #else /* not HAVE_SHM */
1783 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1784 "Dump current state of Emacs into executable file FILENAME.\n\
1785 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1786 This is used in the file `loadup.el' when building Emacs.\n\
1788 You must run Emacs in batch mode in order to dump it.")
1790 Lisp_Object filename
, symfile
;
1792 extern char my_edata
[];
1795 int count
= specpdl_ptr
- specpdl
;
1797 if (! noninteractive
)
1798 error ("Dumping Emacs works only in batch mode");
1800 /* Bind `command-line-processed' to nil before dumping,
1801 so that the dumped Emacs will process its command line
1802 and set up to work with X windows if appropriate. */
1803 symbol
= intern ("command-line-process");
1804 specbind (symbol
, Qnil
);
1806 CHECK_STRING (filename
, 0);
1807 filename
= Fexpand_file_name (filename
, Qnil
);
1808 if (!NILP (symfile
))
1810 CHECK_STRING (symfile
, 0);
1811 if (XSTRING (symfile
)->size
)
1812 symfile
= Fexpand_file_name (symfile
, Qnil
);
1816 Vpurify_flag
= Qnil
;
1819 set_time_zone_rule (dump_tz
);
1820 #ifndef LOCALTIME_CACHE
1821 /* Force a tz reload, since set_time_zone_rule doesn't. */
1828 mapout_data (XSTRING (filename
)->data
);
1830 /* Tell malloc where start of impure now is */
1831 /* Also arrange for warnings when nearly out of space. */
1832 #ifndef SYSTEM_MALLOC
1834 /* On Windows, this was done before dumping, and that once suffices.
1835 Meanwhile, my_edata is not valid on Windows. */
1836 memory_warnings (my_edata
, malloc_warning
);
1837 #endif /* not WINDOWSNT */
1839 #ifdef DOUG_LEA_MALLOC
1840 malloc_state_ptr
= malloc_get_state ();
1842 unexec (XSTRING (filename
)->data
,
1843 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1844 #ifdef DOUG_LEA_MALLOC
1845 free (malloc_state_ptr
);
1847 #endif /* not VMS */
1851 return unbind_to (count
, Qnil
);
1854 #endif /* not HAVE_SHM */
1856 #endif /* not CANNOT_DUMP */
1863 decode_env_path (evarname
, defalt
)
1864 char *evarname
, *defalt
;
1866 register char *path
, *p
;
1867 Lisp_Object lpath
, element
, tem
;
1869 /* It's okay to use getenv here, because this function is only used
1870 to initialize variables when Emacs starts up, and isn't called
1873 path
= (char *) getenv (evarname
);
1879 /* Ensure values from the environment use the proper directory separator. */
1882 p
= alloca (strlen (path
) + 1);
1886 if ('/' == DIRECTORY_SEP
)
1887 dostounix_filename (path
);
1889 unixtodos_filename (path
);
1895 p
= index (path
, SEPCHAR
);
1896 if (!p
) p
= path
+ strlen (path
);
1897 element
= (p
- path
? make_string (path
, p
- path
)
1898 : build_string ("."));
1900 /* Add /: to the front of the name
1901 if it would otherwise be treated as magic. */
1902 tem
= Ffind_file_name_handler (element
, Qt
);
1904 element
= concat2 (build_string ("/:"), element
);
1906 lpath
= Fcons (element
, lpath
);
1912 return Fnreverse (lpath
);
1918 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1919 staticpro (&Qfile_name_handler_alist
);
1923 defsubr (&Sdump_emacs_data
);
1925 defsubr (&Sdump_emacs
);
1929 defsubr (&Skill_emacs
);
1931 defsubr (&Sinvocation_name
);
1932 defsubr (&Sinvocation_directory
);
1934 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1935 "Args passed by shell to Emacs, as a list of strings.");
1937 DEFVAR_LISP ("system-type", &Vsystem_type
,
1938 "Value is symbol indicating type of operating system you are using.");
1939 Vsystem_type
= intern (SYSTEM_TYPE
);
1941 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1942 "Value is string indicating configuration Emacs was built for.");
1943 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1945 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1946 "String containing the configuration options Emacs was built with.");
1947 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1949 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1950 "Non-nil means Emacs is running without interactive terminal.");
1952 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1953 "Hook to be run whenever kill-emacs is called.\n\
1954 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1955 in other similar situations), functions placed on this hook should not\n\
1956 expect to be able to interact with the user. To ask for confirmation,\n\
1957 see `kill-emacs-query-functions' instead.");
1958 Vkill_emacs_hook
= Qnil
;
1961 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
1962 "Hook to be run whenever emacs receives a USR1 signal");
1963 Vsignal_USR1_hook
= Qnil
;
1965 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
1966 "Hook to be run whenever emacs receives a USR2 signal");
1967 Vsignal_USR2_hook
= Qnil
;
1972 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1973 "Priority for Emacs to run at.\n\
1974 This value is effective only if set before Emacs is dumped,\n\
1975 and only if the Emacs executable is installed with setuid to permit\n\
1976 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1977 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1978 before you compile Emacs, to enable the code for this feature.");
1981 DEFVAR_LISP ("path-separator", &Vpath_separator
,
1982 "The directory separator in search paths, as a string.");
1985 Vpath_separator
= make_string (&c
, 1);
1988 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1989 "The program name that was used to run Emacs.\n\
1990 Any directory names are omitted.");
1992 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1993 "The directory in which the Emacs executable was found, to run it.\n\
1994 The value is nil if that directory's name is not known.");
1996 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1997 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1998 This is non-nil when we can't find those directories in their standard\n\
1999 installed locations, but we can find them\n\
2000 near where the Emacs executable was found.");
2001 Vinstallation_directory
= Qnil
;