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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 #include <sys/types.h>
35 #include <sys/ioctl.h>
40 #include "intervals.h"
43 #include "syssignal.h"
50 extern void malloc_warning ();
51 extern void set_time_zone_rule ();
52 extern char *index ();
53 extern char *strerror ();
55 /* Command line args from shell, as list of strings */
56 Lisp_Object Vcommand_line_args
;
58 /* The name under which Emacs was invoked, with any leading directory
60 Lisp_Object Vinvocation_name
;
62 /* The directory name from which Emacs was invoked. */
63 Lisp_Object Vinvocation_directory
;
65 /* The directory name in which to find subdirs such as lisp and etc.
66 nil means get them only from PATH_LOADSEARCH. */
67 Lisp_Object Vinstallation_directory
;
69 /* Hook run by `kill-emacs' before it does really anything. */
70 Lisp_Object Vkill_emacs_hook
;
72 /* Set nonzero after Emacs has started up the first time.
73 Prevents reinitialization of the Lisp world and keymaps
74 on subsequent starts. */
77 /* Variable whose value is symbol giving operating system type. */
78 Lisp_Object Vsystem_type
;
80 /* Variable whose value is string giving configuration built for. */
81 Lisp_Object Vsystem_configuration
;
83 /* Variable whose value is string giving configuration options,
84 for use when reporting bugs. */
85 Lisp_Object Vsystem_configuration_options
;
87 /* If non-zero, emacs should not attempt to use an window-specific code,
88 but instead should use the virtual terminal under which it was started */
89 int inhibit_window_system
;
91 /* If nonzero, set Emacs to run at this priority. This is also used
92 in child_setup and sys_suspend to make sure subshells run at normal
93 priority; Those functions have their own extern declaration. */
96 /* If non-zero a filter or a sentinel is running. Tested to save the match
97 data on the first attempt to change it inside asynchronous code. */
98 int running_asynch_code
;
102 extern int inherited_pgroup
;
105 #ifdef HAVE_X_WINDOWS
106 /* If non-zero, -d was specified, meaning we're using some window system. */
110 /* An address near the bottom of the stack.
111 Tells GC how to save a copy of the stack. */
114 #ifdef HAVE_WINDOW_SYSTEM
115 extern Lisp_Object Vwindow_system
;
116 #endif /* HAVE_WINDOW_SYSTEM */
118 extern Lisp_Object Vauto_save_list_file_name
;
120 #ifdef USG_SHARED_LIBRARIES
121 /* If nonzero, this is the place to put the end of the writable segment
124 unsigned int bss_end
= 0;
127 /* Nonzero means running Emacs without interactive terminal. */
131 /* Value of Lisp variable `noninteractive'.
132 Normally same as C variable `noninteractive'
133 but nothing terrible happens if user sets this one. */
137 /* Save argv and argc. */
141 static void sort_args ();
143 /* Signal code for the fatal signal that was received */
144 int fatal_error_code
;
146 /* Nonzero if handling a fatal error already */
147 int fatal_error_in_progress
;
149 /* Handle bus errors, illegal instruction, etc. */
151 fatal_error_signal (sig
)
154 fatal_error_code
= sig
;
155 signal (sig
, SIG_DFL
);
157 /* If fatal error occurs in code below, avoid infinite recursion. */
158 if (! fatal_error_in_progress
)
160 fatal_error_in_progress
= 1;
162 shut_down_emacs (sig
, 0, Qnil
);
166 LIB$
STOP (SS$_ABORT
);
168 /* Signal the same code; this time it will really be fatal.
169 Remember that since we're in a signal handler, the signal we're
170 going to send is probably blocked, so we have to unblock it if we
171 want to really receive it. */
173 sigunblock (sigmask (fatal_error_code
));
175 kill (getpid (), fatal_error_code
);
181 /* Handler for SIGDANGER. */
183 memory_warning_signal (sig
)
186 signal (sig
, memory_warning_signal
);
188 malloc_warning ("Operating system warns that virtual memory is running low.\n");
190 /* It might be unsafe to call do_auto_save now. */
191 force_auto_save_soon ();
195 /* Code for dealing with Lisp access to the Unix command line */
198 init_cmdargs (argc
, argv
, skip_args
)
204 Lisp_Object name
, dir
;
209 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
210 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
211 /* If we got no directory in argv[0], search PATH to find where
212 Emacs actually came from. */
213 if (NILP (Vinvocation_directory
))
216 int yes
= openp (Vexec_path
, Vinvocation_name
,
217 EXEC_SUFFIXES
, &found
, 1);
219 Vinvocation_directory
= Ffile_name_directory (found
);
222 if (!NILP (Vinvocation_directory
)
223 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
224 /* Emacs was started with relative path, like ./emacs */
225 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
227 Vinstallation_directory
= Qnil
;
229 if (!NILP (Vinvocation_directory
))
231 dir
= Vinvocation_directory
;
232 name
= Fexpand_file_name (Vinvocation_name
, dir
);
235 Lisp_Object tem
, lib_src_exists
;
236 Lisp_Object etc_exists
, info_exists
;
238 /* See if dir contains subdirs for use by Emacs.
239 Check for the ones that would exist in a build directory,
240 not including lisp and info. */
241 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
242 lib_src_exists
= Ffile_exists_p (tem
);
243 if (!NILP (lib_src_exists
))
245 tem
= Fexpand_file_name (build_string ("etc"), dir
);
246 etc_exists
= Ffile_exists_p (tem
);
247 if (!NILP (etc_exists
))
249 Vinstallation_directory
250 = Ffile_name_as_directory (dir
);
255 /* See if dir's parent contains those subdirs. */
256 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
257 lib_src_exists
= Ffile_exists_p (tem
);
258 if (!NILP (lib_src_exists
))
260 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
261 etc_exists
= Ffile_exists_p (tem
);
262 if (!NILP (etc_exists
))
264 tem
= Fexpand_file_name (build_string (".."), dir
);
265 Vinstallation_directory
266 = Ffile_name_as_directory (tem
);
271 /* If the Emacs executable is actually a link,
272 next try the dir that the link points into. */
273 tem
= Ffile_symlink_p (name
);
276 name
= Fexpand_file_name (tem
, dir
);
277 dir
= Ffile_name_directory (name
);
284 Vcommand_line_args
= Qnil
;
286 for (i
= argc
- 1; i
>= 0; i
--)
288 if (i
== 0 || i
> skip_args
)
290 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
294 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
295 "Return the program name that was used to run Emacs.\n\
296 Any directory names are omitted.")
299 return Fcopy_sequence (Vinvocation_name
);
302 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
304 "Return the directory name in which the Emacs executable was located")
307 return Fcopy_sequence (Vinvocation_directory
);
312 #ifdef LINK_CRTL_SHARE
313 #ifdef SHARABLE_LIB_BUG
314 extern noshare
char **environ
;
315 #endif /* SHARABLE_LIB_BUG */
316 #endif /* LINK_CRTL_SHARE */
320 /* A valid but unlikely value for the TZ environment value.
321 It is OK (though a bit slower) if the user actually chooses this value. */
322 static char dump_tz
[] = "UtC0";
325 #ifndef ORDINARY_LINK
326 /* We don't include crtbegin.o and crtend.o in the link,
327 so these functions and variables might be missed.
328 Provide dummy definitions to avoid error.
329 (We don't have any real constructors or destructors.) */
331 #ifndef GCC_CTORS_IN_LIBC
334 __do_global_ctors_aux ()
338 /* Linux has a bug in its library; avoid an error. */
340 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
342 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
343 #endif /* GCC_CTORS_IN_LIBC */
346 #endif /* __GNUC__ */
347 #endif /* ORDINARY_LINK */
349 /* Test whether the next argument in ARGV matches SSTR or a prefix of
350 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
351 (the argument is supposed to have a value) store in *VALPTR either
352 the next argument or the portion of this one after the equal sign.
353 ARGV is read starting at position *SKIPPTR; this index is advanced
354 by the number of arguments used.
356 Too bad we can't just use getopt for all of this, but we don't have
357 enough information to do it right. */
360 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
373 /* Don't access argv[argc]; give up in advance. */
374 if (argc
<= *skipptr
+ 1)
377 arg
= argv
[*skipptr
+1];
380 if (strcmp (arg
, sstr
) == 0)
384 *valptr
= argv
[*skipptr
+2];
391 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
392 ? p
- arg
: strlen (arg
));
393 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
395 else if (valptr
== NULL
)
406 else if (argv
[*skipptr
+2] != NULL
)
408 *valptr
= argv
[*skipptr
+2];
419 main (argc
, argv
, envp
)
424 char stack_bottom_variable
;
429 #ifdef LINUX_SBRK_BUG
433 sort_args (argc
, argv
);
435 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
438 tem
= Fsymbol_value (intern ("emacs-version"));
441 fprintf (stderr
, "Invalid value of `emacs-version'\n");
446 printf ("%s\n", XSTRING (tem
)->data
);
451 /* Map in shared memory, if we are using that. */
453 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
456 /* The shared memory was just restored, which clobbered this. */
462 /* The shared memory was just restored, which clobbered this. */
469 extern int malloc_cookie
;
470 /* This helps out unexnext.c. */
472 if (malloc_jumpstart (malloc_cookie
) != 0)
473 printf ("malloc jumpstart failed!\n");
478 /* If -map specified, map the data file in */
481 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
485 #ifdef LINK_CRTL_SHARE
486 #ifdef SHARABLE_LIB_BUG
487 /* Bletcherous shared libraries! */
489 stdin
= fdopen (0, "r");
491 stdout
= fdopen (1, "w");
493 stderr
= fdopen (2, "w");
496 #endif /* SHARABLE_LIB_BUG */
497 #endif /* LINK_CRTL_SHARE */
500 /* Record (approximately) where the stack begins. */
501 stack_bottom
= &stack_bottom_variable
;
503 #ifdef RUN_TIME_REMAP
505 run_time_remap (argv
[0]);
508 #ifdef USG_SHARED_LIBRARIES
510 brk ((void *)bss_end
);
515 #ifndef SYSTEM_MALLOC
518 /* Arrange to get warning messages as memory fills up. */
519 memory_warnings (0, malloc_warning
);
521 /* Arrange to disable interrupt input while malloc and friends are
523 uninterrupt_malloc ();
525 #endif /* not SYSTEM_MALLOC */
528 /* We do all file input/output as binary files. When we need to translate
529 newlines, we do that manually. */
531 (stdin
)->_flag
&= ~_IOTEXT
;
532 (stdout
)->_flag
&= ~_IOTEXT
;
533 (stderr
)->_flag
&= ~_IOTEXT
;
536 #ifdef SET_EMACS_PRIORITY
538 nice (emacs_priority
);
540 #endif /* SET_EMACS_PRIORITY */
542 #ifdef EXTRA_INITIALIZE
546 inhibit_window_system
= 0;
548 /* Handle the -t switch, which specifies filename to use as terminal */
551 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
556 result
= open (term
, O_RDWR
, 2 );
559 char *errstring
= strerror (errno
);
560 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
566 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
569 fprintf (stderr
, "Using %s\n", term
);
570 #ifdef HAVE_WINDOW_SYSTEM
571 inhibit_window_system
= 1; /* -t => -nw */
575 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
576 inhibit_window_system
= 1;
578 /* Handle the -batch switch, which means don't do interactive display. */
580 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
583 /* Handle the --help option, which gives a usage message.. */
584 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
587 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
588 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
589 [--version] [--no-site-file]\n\
590 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
591 [+linenum] file-to-visit [--kill]\n", argv
[0]);
595 #ifdef HAVE_X_WINDOWS
596 /* Stupid kludge to catch command-line display spec. We can't
597 handle this argument entirely in window system dependent code
598 because we don't even know which window system dependent code
599 to run until we've recognized this argument. */
603 int count_before
= skip_args
;
605 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
607 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
610 /* If we have the form --display=NAME,
611 convert it into -d name.
612 This requires inserting a new element into argv. */
613 if (displayname
!= 0 && skip_args
- count_before
== 1)
615 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
618 for (j
= 0; j
< count_before
+ 1; j
++)
620 new[count_before
+ 1] = "-d";
621 new[count_before
+ 2] = displayname
;
622 for (j
= count_before
+ 2; j
<argc
; j
++)
623 new[j
+ 1] = argv
[j
];
627 /* Change --display to -d, when its arg is separate. */
628 else if (displayname
!= 0 && skip_args
> count_before
629 && argv
[count_before
+ 1][1] == '-')
630 argv
[count_before
+ 1] = "-d";
632 /* Don't actually discard this arg. */
633 skip_args
= count_before
;
637 if (! noninteractive
)
642 inherited_pgroup
= EMACS_GETPGRP (0);
643 setpgrp (0, getpid ());
646 #if defined (USG5) && defined (INTERRUPT_INPUT)
656 /* Don't catch SIGHUP if dumping. */
664 /* In --batch mode, don't catch SIGHUP if already ignored.
665 That makes nohup work. */
667 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
668 signal (SIGHUP
, fatal_error_signal
);
669 sigunblockx (SIGHUP
);
674 ! noninteractive
|| initialized
680 /* Don't catch these signals in batch mode if dumping.
681 On some machines, this sets static data that would make
682 signal fail to work right when the dumped Emacs is run. */
683 signal (SIGQUIT
, fatal_error_signal
);
684 signal (SIGILL
, fatal_error_signal
);
685 signal (SIGTRAP
, fatal_error_signal
);
687 signal (SIGABRT
, fatal_error_signal
);
690 signal (SIGHWE
, fatal_error_signal
);
693 signal (SIGPRE
, fatal_error_signal
);
696 signal (SIGORE
, fatal_error_signal
);
699 signal (SIGUME
, fatal_error_signal
);
702 signal (SIGDLK
, fatal_error_signal
);
705 signal (SIGCPULIM
, fatal_error_signal
);
708 /* This is missing on some systems - OS/2, for example. */
709 signal (SIGIOT
, fatal_error_signal
);
712 signal (SIGEMT
, fatal_error_signal
);
714 signal (SIGFPE
, fatal_error_signal
);
716 signal (SIGBUS
, fatal_error_signal
);
718 signal (SIGSEGV
, fatal_error_signal
);
720 signal (SIGSYS
, fatal_error_signal
);
722 signal (SIGTERM
, fatal_error_signal
);
724 signal (SIGXCPU
, fatal_error_signal
);
727 signal (SIGXFSZ
, fatal_error_signal
);
731 /* This just means available memory is getting low. */
732 signal (SIGDANGER
, memory_warning_signal
);
736 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
737 signal (SIGXCPU
, fatal_error_signal
);
739 signal (SIGIOINT
, fatal_error_signal
);
741 signal (SIGGRANT
, fatal_error_signal
);
742 signal (SIGRETRACT
, fatal_error_signal
);
743 signal (SIGSOUND
, fatal_error_signal
);
744 signal (SIGMSG
, fatal_error_signal
);
748 noninteractive1
= noninteractive
;
750 /* Perform basic initializations (not merely interning symbols) */
757 init_syntax_once (); /* Create standard syntax table. */
758 /* Must be done before init_buffer */
759 init_casetab_once ();
760 init_buffer_once (); /* Create buffer table and some buffers */
761 init_minibuf_once (); /* Create list of minibuffers */
762 /* Must precede init_window_once */
763 init_window_once (); /* Init the window system */
769 running_asynch_code
= 0;
772 /* Call early 'cause init_environment needs it. */
774 /* Set defaults for several environment variables. */
775 if (initialized
) init_environment (argc
, argv
, skip_args
);
776 else init_gettimeofday ();
780 /* Initialize environment from registry settings. */
784 /* egetenv is a pretty low-level facility, which may get called in
785 many circumstances; it seems flimsy to put off initializing it
786 until calling init_callproc. */
787 set_process_environment ();
788 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
789 if this is not done. Do it after set_process_environment so that we
790 don't pollute Vprocess_environment. */
795 init_buffer (); /* Init default directory of main buffer */
797 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
798 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
799 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
805 init_vms_input ();/* init_display calls get_frame_size, that needs this */
807 init_display (); /* Determine terminal type. init_sys_modes uses results */
809 init_keyboard (); /* This too must precede init_sys_modes */
811 init_vmsproc (); /* And this too. */
813 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
817 #ifdef LISP_FLOAT_TYPE
824 #ifdef CLASH_DETECTION
826 #endif /* CLASH_DETECTION */
828 /* Intern the names of all standard functions and variables; define standard keys */
832 /* The basic levels of Lisp must come first */
833 /* And data must come first of all
834 for the sake of symbols like error-message */
847 syms_of_casefiddle ();
851 #ifndef NO_DIR_LIBRARY
853 #endif /* not NO_DIR_LIBRARY */
859 #ifdef CLASH_DETECTION
861 #endif /* CLASH_DETECTION */
876 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
883 #ifdef HAVE_X_WINDOWS
890 #endif /* HAVE_X_WINDOWS */
892 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
898 #endif /* HAVE_MENUS */
901 syms_of_win32term ();
903 syms_of_win32faces ();
904 syms_of_win32select ();
905 syms_of_win32menu ();
906 #endif /* HAVE_NTGUI */
916 keys_of_casefiddle ();
930 /* Handle -l loadup-and-dump, args passed by Makefile. */
931 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
932 Vtop_level
= Fcons (intern ("load"),
933 Fcons (build_string (file
), Qnil
));
935 /* Unless next switch is -nl, load "loadup.el" first thing. */
936 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
937 Vtop_level
= Fcons (intern ("load"),
938 Fcons (build_string ("loadup.el"), Qnil
));
939 #endif /* CANNOT_DUMP */
944 /* Erase any pre-dump messages in the message log, to avoid confusion */
945 Lisp_Object old_log_max
;
946 old_log_max
= Vmessage_log_max
;
947 XSETFASTINT (Vmessage_log_max
, 0);
948 message_dolog ("", 0, 1);
949 Vmessage_log_max
= old_log_max
;
953 /* If the execution TZ happens to be the same as the dump TZ,
954 change it to some other value and then change it back,
955 to force the underlying implementation to reload the TZ info.
956 This is needed on implementations that load TZ info from files,
957 since the TZ file contents may differ between dump and execution. */
958 char *tz
= getenv ("TZ");
959 if (tz
&& !strcmp (tz
, dump_tz
))
971 #ifdef LOCALTIME_CACHE
972 /* Some versions of localtime have a bug. They cache the value of the time
973 zone rather than looking it up every time. Since localtime() is
974 called to bolt the undumping time into the undumped emacs, this
975 results in localtime ignoring the TZ environment variable.
976 This flushes the new TZ value into localtime. */
978 #endif /* defined (LOCALTIME_CACHE) */
980 /* Enter editor command loop. This never returns. */
985 /* Sort the args so we can find the most important ones
986 at the beginning of argv. */
988 /* First, here's a table of all the standard options. */
998 struct standard_args standard_args
[] =
1000 { "-version", "--version", 110, 0 },
1001 { "-help", "--help", 110, 0 },
1002 { "-nl", "--no-shared-memory", 100, 0 },
1004 { "-map", "--map-data", 100, 0 },
1006 { "-t", "--terminal", 90, 1 },
1007 { "-d", "--display", 80, 1 },
1008 { "-display", 0, 80, 1 },
1009 { "-nw", "--no-windows", 70, 0 },
1010 { "-batch", "--batch", 60, 0 },
1011 { "-q", "--no-init-file", 50, 0 },
1012 { "-no-init-file", 0, 50, 0 },
1013 { "-no-site-file", "--no-site-file", 40, 0 },
1014 { "-u", "--user", 30, 1 },
1015 { "-user", 0, 30, 1 },
1016 { "-debug-init", "--debug-init", 20, 0 },
1017 { "-i", "--icon-type", 15, 0 },
1018 { "-itype", 0, 15, 0 },
1019 { "-iconic", "--iconic", 15, 0 },
1020 { "-bg", "--background-color", 10, 1 },
1021 { "-background", 0, 10, 1 },
1022 { "-fg", "--foreground-color", 10, 1 },
1023 { "-foreground", 0, 10, 1 },
1024 { "-bd", "--border-color", 10, 1 },
1025 { "-bw", "--border-width", 10, 1 },
1026 { "-ib", "--internal-border", 10, 1 },
1027 { "-ms", "--mouse-color", 10, 1 },
1028 { "-cr", "--cursor-color", 10, 1 },
1029 { "-fn", "--font", 10, 1 },
1030 { "-font", 0, 10, 1 },
1031 { "-g", "--geometry", 10, 1 },
1032 { "-geometry", 0, 10, 1 },
1033 { "-T", "--title", 10, 1 },
1034 { "-name", "--name", 10, 1 },
1035 { "-xrm", "--xrm", 10, 1 },
1036 { "-r", "--reverse-video", 5, 0 },
1038 { "-reverse", 0, 5, 0 },
1039 { "-vb", "--vertical-scroll-bars", 5, 0 },
1040 /* These have the same priority as ordinary file name args,
1041 so they are not reordered with respect to those. */
1042 { "-L", "--directory", 0, 1 },
1043 { "-directory", 0, 0, 1 },
1044 { "-l", "--load", 0, 1 },
1045 { "-load", 0, 0, 1 },
1046 { "-f", "--funcall", 0, 1 },
1047 { "-funcall", 0, 0, 1 },
1048 { "-eval", "--eval", 0, 1 },
1049 { "-insert", "--insert", 0, 1 },
1050 /* This should be processed after ordinary file name args and the like. */
1051 { "-kill", "--kill", -10, 0 },
1054 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1055 so that the highest priority ones come first.
1056 Do not change the order of elements of equal priority.
1057 If an option takes an argument, keep it and its argument together. */
1060 sort_args (argc
, argv
)
1064 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1065 /* For each element of argv,
1066 the corresponding element of options is:
1067 0 for an option that takes no arguments,
1068 1 for an option that takes one argument, etc.
1069 -1 for an ordinary non-option argument. */
1070 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1071 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1076 /* Categorize all the options,
1077 and figure out which argv elts are option arguments. */
1078 for (from
= 1; from
< argc
; from
++)
1082 if (argv
[from
][0] == '-')
1087 /* Look for a match with a known old-fashioned option. */
1088 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1089 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1091 options
[from
] = standard_args
[i
].nargs
;
1092 priority
[from
] = standard_args
[i
].priority
;
1093 if (from
+ standard_args
[i
].nargs
>= argc
)
1094 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1095 from
+= standard_args
[i
].nargs
;
1099 /* Look for a match with a known long option.
1100 MATCH is -1 if no match so far, -2 if two or more matches so far,
1101 >= 0 (the table index of the match) if just one match so far. */
1102 if (argv
[from
][1] == '-')
1105 thislen
= strlen (argv
[from
]);
1106 equals
= index (argv
[from
], '=');
1108 thislen
= equals
- argv
[from
];
1111 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1112 if (standard_args
[i
].longname
1113 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1122 /* If we found exactly one match, use that. */
1125 options
[from
] = standard_args
[match
].nargs
;
1126 priority
[from
] = standard_args
[match
].priority
;
1127 /* If --OPTION=VALUE syntax is used,
1128 this option uses just one argv element. */
1131 if (from
+ options
[from
] >= argc
)
1132 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1133 from
+= options
[from
];
1140 /* Copy the arguments, in order of decreasing priority, to NEW. */
1145 int best_priority
= -9999;
1147 /* Find the highest priority remaining option.
1148 If several have equal priority, take the first of them. */
1149 for (from
= 1; from
< argc
; from
++)
1151 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1153 best_priority
= priority
[from
];
1156 /* Skip option arguments--they are tied to the options. */
1157 if (options
[from
] > 0)
1158 from
+= options
[from
];
1164 /* Copy the highest priority remaining option, with its args, to NEW. */
1165 new[to
++] = argv
[best
];
1166 for (i
= 0; i
< options
[best
]; i
++)
1167 new[to
++] = argv
[best
+ i
+ 1];
1169 /* Clear out this option in ARGV. */
1171 for (i
= 0; i
< options
[best
]; i
++)
1172 argv
[best
+ i
+ 1] = 0;
1175 bcopy (new, argv
, sizeof (char *) * argc
);
1178 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1179 "Exit the Emacs job and kill it.\n\
1180 If ARG is an integer, return ARG as the exit program code.\n\
1181 If ARG is a string, stuff it as keyboard input.\n\n\
1182 The value of `kill-emacs-hook', if not void,\n\
1183 is a list of functions (of no args),\n\
1184 all of which are called before Emacs is actually killed.")
1188 Lisp_Object hook
, hook1
;
1190 struct gcpro gcpro1
;
1197 if (!NILP (Vrun_hooks
) && !noninteractive
)
1198 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1202 /* Is it really necessary to do this deassign
1203 when we are going to exit anyway? */
1208 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1210 /* If we have an auto-save list file,
1211 kill it because we are exiting Emacs deliberately (not crashing).
1212 Do it after shut_down_emacs, which does an auto-save. */
1213 if (STRINGP (Vauto_save_list_file_name
))
1214 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1216 exit (INTEGERP (arg
) ? XINT (arg
)
1227 /* Perform an orderly shutdown of Emacs. Autosave any modified
1228 buffers, kill any child processes, clean up the terminal modes (if
1229 we're in the foreground), and other stuff like that. Don't perform
1230 any redisplay; this may be called when Emacs is shutting down in
1231 the background, or after its X connection has died.
1233 If SIG is a signal number, print a message for it.
1235 This is called by fatal signal handlers, X protocol error handlers,
1239 shut_down_emacs (sig
, no_x
, stuff
)
1243 /* Prevent running of hooks from now on. */
1246 /* If we are controlling the terminal, reset terminal modes */
1247 #ifdef EMACS_HAVE_TTY_PGRP
1249 int pgrp
= EMACS_GETPGRP (0);
1252 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1257 if (sig
&& sig
!= SIGTERM
)
1258 fprintf (stderr
, "Fatal error (%d).", sig
);
1266 stuff_buffered_input (stuff
);
1268 kill_buffer_processes (Qnil
);
1269 Fdo_auto_save (Qt
, Qnil
);
1271 #ifdef CLASH_DETECTION
1272 unlock_all_files ();
1276 kill_vms_processes ();
1279 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1280 #ifdef HAVE_X_WINDOWS
1281 /* It's not safe to call intern here. Maybe we are crashing. */
1282 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1283 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1284 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1286 Fx_close_current_connection ();
1287 #endif /* HAVE_X_WINDOWS */
1291 /* There is a tendency for a SIGIO signal to arrive within exit,
1292 and cause a SIGHUP because the input descriptor is already closed. */
1294 signal (SIGIO
, SIG_IGN
);
1304 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1305 "Dump current state of Emacs into data file FILENAME.\n\
1306 This function exists on systems that use HAVE_SHM.")
1308 Lisp_Object filename
;
1310 extern char my_edata
[];
1313 CHECK_STRING (filename
, 0);
1314 filename
= Fexpand_file_name (filename
, Qnil
);
1317 Vpurify_flag
= Qnil
;
1320 /* Tell malloc where start of impure now is */
1321 /* Also arrange for warnings when nearly out of space. */
1322 #ifndef SYSTEM_MALLOC
1323 memory_warnings (my_edata
, malloc_warning
);
1325 map_out_data (XSTRING (filename
)->data
);
1332 #else /* not HAVE_SHM */
1334 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1335 "Dump current state of Emacs into executable file FILENAME.\n\
1336 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1337 This is used in the file `loadup.el' when building Emacs.\n\
1339 Bind `command-line-processed' to nil before dumping,\n\
1340 if you want the dumped Emacs to process its command line\n\
1341 and announce itself normally when it is run.")
1343 Lisp_Object filename
, symfile
;
1345 extern char my_edata
[];
1348 CHECK_STRING (filename
, 0);
1349 filename
= Fexpand_file_name (filename
, Qnil
);
1350 if (!NILP (symfile
))
1352 CHECK_STRING (symfile
, 0);
1353 if (XSTRING (symfile
)->size
)
1354 symfile
= Fexpand_file_name (symfile
, Qnil
);
1358 Vpurify_flag
= Qnil
;
1361 set_time_zone_rule (dump_tz
);
1362 #ifndef LOCALTIME_CACHE
1363 /* Force a tz reload, since set_time_zone_rule doesn't. */
1370 mapout_data (XSTRING (filename
)->data
);
1372 /* Tell malloc where start of impure now is */
1373 /* Also arrange for warnings when nearly out of space. */
1374 #ifndef SYSTEM_MALLOC
1376 /* On Windows, this was done before dumping, and that once suffices.
1377 Meanwhile, my_edata is not valid on Windows. */
1378 memory_warnings (my_edata
, malloc_warning
);
1379 #endif /* not WINDOWSNT */
1381 unexec (XSTRING (filename
)->data
,
1382 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1383 #endif /* not VMS */
1390 #endif /* not HAVE_SHM */
1392 #endif /* not CANNOT_DUMP */
1399 decode_env_path (evarname
, defalt
)
1400 char *evarname
, *defalt
;
1402 register char *path
, *p
;
1406 /* It's okay to use getenv here, because this function is only used
1407 to initialize variables when Emacs starts up, and isn't called
1410 path
= (char *) getenv (evarname
);
1418 p
= index (path
, SEPCHAR
);
1419 if (!p
) p
= path
+ strlen (path
);
1420 lpath
= Fcons (p
- path
? make_string (path
, p
- path
)
1421 : build_string ("."),
1428 return Fnreverse (lpath
);
1435 defsubr (&Sdump_emacs_data
);
1437 defsubr (&Sdump_emacs
);
1441 defsubr (&Skill_emacs
);
1443 defsubr (&Sinvocation_name
);
1444 defsubr (&Sinvocation_directory
);
1446 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1447 "Args passed by shell to Emacs, as a list of strings.");
1449 DEFVAR_LISP ("system-type", &Vsystem_type
,
1450 "Value is symbol indicating type of operating system you are using.");
1451 Vsystem_type
= intern (SYSTEM_TYPE
);
1453 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1454 "Value is string indicating configuration Emacs was built for.");
1455 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1457 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1458 "String containing the configuration options Emacs was built with.");
1459 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1461 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1462 "Non-nil means Emacs is running without interactive terminal.");
1464 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1465 "Hook to be run whenever kill-emacs is called.\n\
1466 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1467 in other similar situations), functions placed on this hook should not\n\
1468 expect to be able to interact with the user. To ask for confirmation,\n\
1469 see `kill-emacs-query-functions' instead.");
1470 Vkill_emacs_hook
= Qnil
;
1472 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1473 "Priority for Emacs to run at.\n\
1474 This value is effective only if set before Emacs is dumped,\n\
1475 and only if the Emacs executable is installed with setuid to permit\n\
1476 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1477 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1478 before you compile Emacs, to enable the code for this feature.");
1481 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1482 "The program name that was used to run Emacs.\n\
1483 Any directory names are omitted.");
1485 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1486 "The directory in which the Emacs executable was found, to run it.\n\
1487 The value is nil if that directory's name is not known.");
1489 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1490 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1491 This is non-nil when we can't find those directories in their standard\n\
1492 installed locations, but we can find them\n\
1493 near where the Emacs executable was found.");
1494 Vinstallation_directory
= Qnil
;