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 TOTALLY_UNBLOCK_INPUT
;
159 /* If fatal error occurs in code below, avoid infinite recursion. */
160 if (! fatal_error_in_progress
)
162 fatal_error_in_progress
= 1;
164 shut_down_emacs (sig
, 0, Qnil
);
168 LIB$
STOP (SS$_ABORT
);
170 /* Signal the same code; this time it will really be fatal.
171 Remember that since we're in a signal handler, the signal we're
172 going to send is probably blocked, so we have to unblock it if we
173 want to really receive it. */
175 sigunblock (sigmask (fatal_error_code
));
177 kill (getpid (), fatal_error_code
);
183 /* Handler for SIGDANGER. */
185 memory_warning_signal (sig
)
188 signal (sig
, memory_warning_signal
);
190 malloc_warning ("Operating system warns that virtual memory is running low.\n");
192 /* It might be unsafe to call do_auto_save now. */
193 force_auto_save_soon ();
197 /* Code for dealing with Lisp access to the Unix command line */
200 init_cmdargs (argc
, argv
, skip_args
)
206 Lisp_Object name
, dir
;
211 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
212 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
213 /* If we got no directory in argv[0], search PATH to find where
214 Emacs actually came from. */
215 if (NILP (Vinvocation_directory
))
218 int yes
= openp (Vexec_path
, Vinvocation_name
,
219 EXEC_SUFFIXES
, &found
, 1);
221 Vinvocation_directory
= Ffile_name_directory (found
);
224 if (!NILP (Vinvocation_directory
)
225 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
226 /* Emacs was started with relative path, like ./emacs */
227 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
229 Vinstallation_directory
= Qnil
;
231 if (!NILP (Vinvocation_directory
))
233 dir
= Vinvocation_directory
;
234 name
= Fexpand_file_name (Vinvocation_name
, dir
);
237 Lisp_Object tem
, lib_src_exists
;
238 Lisp_Object etc_exists
, info_exists
;
240 /* See if dir contains subdirs for use by Emacs.
241 Check for the ones that would exist in a build directory,
242 not including lisp and info. */
243 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
244 lib_src_exists
= Ffile_exists_p (tem
);
245 if (!NILP (lib_src_exists
))
247 tem
= Fexpand_file_name (build_string ("etc"), dir
);
248 etc_exists
= Ffile_exists_p (tem
);
249 if (!NILP (etc_exists
))
251 Vinstallation_directory
252 = Ffile_name_as_directory (dir
);
257 /* See if dir's parent contains those subdirs. */
258 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
259 lib_src_exists
= Ffile_exists_p (tem
);
260 if (!NILP (lib_src_exists
))
262 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
263 etc_exists
= Ffile_exists_p (tem
);
264 if (!NILP (etc_exists
))
266 tem
= Fexpand_file_name (build_string (".."), dir
);
267 Vinstallation_directory
268 = Ffile_name_as_directory (tem
);
273 /* If the Emacs executable is actually a link,
274 next try the dir that the link points into. */
275 tem
= Ffile_symlink_p (name
);
278 name
= Fexpand_file_name (tem
, dir
);
279 dir
= Ffile_name_directory (name
);
286 Vcommand_line_args
= Qnil
;
288 for (i
= argc
- 1; i
>= 0; i
--)
290 if (i
== 0 || i
> skip_args
)
292 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
296 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
297 "Return the program name that was used to run Emacs.\n\
298 Any directory names are omitted.")
301 return Fcopy_sequence (Vinvocation_name
);
304 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
306 "Return the directory name in which the Emacs executable was located")
309 return Fcopy_sequence (Vinvocation_directory
);
314 #ifdef LINK_CRTL_SHARE
315 #ifdef SHARABLE_LIB_BUG
316 extern noshare
char **environ
;
317 #endif /* SHARABLE_LIB_BUG */
318 #endif /* LINK_CRTL_SHARE */
322 /* A valid but unlikely value for the TZ environment value.
323 It is OK (though a bit slower) if the user actually chooses this value. */
324 static char dump_tz
[] = "UtC0";
327 #ifndef ORDINARY_LINK
328 /* We don't include crtbegin.o and crtend.o in the link,
329 so these functions and variables might be missed.
330 Provide dummy definitions to avoid error.
331 (We don't have any real constructors or destructors.) */
333 #ifndef GCC_CTORS_IN_LIBC
336 __do_global_ctors_aux ()
340 /* Linux has a bug in its library; avoid an error. */
342 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
344 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
345 #endif /* GCC_CTORS_IN_LIBC */
348 #endif /* __GNUC__ */
349 #endif /* ORDINARY_LINK */
351 /* Test whether the next argument in ARGV matches SSTR or a prefix of
352 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
353 (the argument is supposed to have a value) store in *VALPTR either
354 the next argument or the portion of this one after the equal sign.
355 ARGV is read starting at position *SKIPPTR; this index is advanced
356 by the number of arguments used.
358 Too bad we can't just use getopt for all of this, but we don't have
359 enough information to do it right. */
362 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
375 /* Don't access argv[argc]; give up in advance. */
376 if (argc
<= *skipptr
+ 1)
379 arg
= argv
[*skipptr
+1];
382 if (strcmp (arg
, sstr
) == 0)
386 *valptr
= argv
[*skipptr
+2];
393 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
394 ? p
- arg
: strlen (arg
));
395 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
397 else if (valptr
== NULL
)
408 else if (argv
[*skipptr
+2] != NULL
)
410 *valptr
= argv
[*skipptr
+2];
421 main (argc
, argv
, envp
)
426 char stack_bottom_variable
;
431 #ifdef LINUX_SBRK_BUG
435 sort_args (argc
, argv
);
437 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
440 tem
= Fsymbol_value (intern ("emacs-version"));
443 fprintf (stderr
, "Invalid value of `emacs-version'\n");
448 printf ("%s\n", XSTRING (tem
)->data
);
453 /* Map in shared memory, if we are using that. */
455 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
458 /* The shared memory was just restored, which clobbered this. */
464 /* The shared memory was just restored, which clobbered this. */
471 extern int malloc_cookie
;
472 /* This helps out unexnext.c. */
474 if (malloc_jumpstart (malloc_cookie
) != 0)
475 printf ("malloc jumpstart failed!\n");
480 /* If -map specified, map the data file in */
483 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
487 #ifdef LINK_CRTL_SHARE
488 #ifdef SHARABLE_LIB_BUG
489 /* Bletcherous shared libraries! */
491 stdin
= fdopen (0, "r");
493 stdout
= fdopen (1, "w");
495 stderr
= fdopen (2, "w");
498 #endif /* SHARABLE_LIB_BUG */
499 #endif /* LINK_CRTL_SHARE */
502 /* Record (approximately) where the stack begins. */
503 stack_bottom
= &stack_bottom_variable
;
505 #ifdef RUN_TIME_REMAP
507 run_time_remap (argv
[0]);
510 #ifdef USG_SHARED_LIBRARIES
512 brk ((void *)bss_end
);
517 #ifndef SYSTEM_MALLOC
520 /* Arrange to get warning messages as memory fills up. */
521 memory_warnings (0, malloc_warning
);
523 /* Arrange to disable interrupt input while malloc and friends are
525 uninterrupt_malloc ();
527 #endif /* not SYSTEM_MALLOC */
530 /* We do all file input/output as binary files. When we need to translate
531 newlines, we do that manually. */
533 (stdin
)->_flag
&= ~_IOTEXT
;
534 (stdout
)->_flag
&= ~_IOTEXT
;
535 (stderr
)->_flag
&= ~_IOTEXT
;
538 #ifdef SET_EMACS_PRIORITY
540 nice (emacs_priority
);
542 #endif /* SET_EMACS_PRIORITY */
544 #ifdef EXTRA_INITIALIZE
548 inhibit_window_system
= 0;
550 /* Handle the -t switch, which specifies filename to use as terminal */
553 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
558 result
= open (term
, O_RDWR
, 2 );
561 char *errstring
= strerror (errno
);
562 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
568 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
571 fprintf (stderr
, "Using %s\n", term
);
572 #ifdef HAVE_WINDOW_SYSTEM
573 inhibit_window_system
= 1; /* -t => -nw */
577 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
578 inhibit_window_system
= 1;
580 /* Handle the -batch switch, which means don't do interactive display. */
582 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
585 /* Handle the --help option, which gives a usage message.. */
586 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
589 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
590 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
591 [--version] [--no-site-file]\n\
592 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
593 [+linenum] file-to-visit [--kill]\n", argv
[0]);
597 #ifdef HAVE_X_WINDOWS
598 /* Stupid kludge to catch command-line display spec. We can't
599 handle this argument entirely in window system dependent code
600 because we don't even know which window system dependent code
601 to run until we've recognized this argument. */
605 int count_before
= skip_args
;
607 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
609 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
612 /* If we have the form --display=NAME,
613 convert it into -d name.
614 This requires inserting a new element into argv. */
615 if (displayname
!= 0 && skip_args
- count_before
== 1)
617 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
620 for (j
= 0; j
< count_before
+ 1; j
++)
622 new[count_before
+ 1] = "-d";
623 new[count_before
+ 2] = displayname
;
624 for (j
= count_before
+ 2; j
<argc
; j
++)
625 new[j
+ 1] = argv
[j
];
629 /* Change --display to -d, when its arg is separate. */
630 else if (displayname
!= 0 && skip_args
> count_before
631 && argv
[count_before
+ 1][1] == '-')
632 argv
[count_before
+ 1] = "-d";
634 /* Don't actually discard this arg. */
635 skip_args
= count_before
;
639 if (! noninteractive
)
644 inherited_pgroup
= EMACS_GETPGRP (0);
645 setpgrp (0, getpid ());
648 #if defined (USG5) && defined (INTERRUPT_INPUT)
658 /* Don't catch SIGHUP if dumping. */
666 /* In --batch mode, don't catch SIGHUP if already ignored.
667 That makes nohup work. */
669 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
670 signal (SIGHUP
, fatal_error_signal
);
671 sigunblockx (SIGHUP
);
676 ! noninteractive
|| initialized
682 /* Don't catch these signals in batch mode if dumping.
683 On some machines, this sets static data that would make
684 signal fail to work right when the dumped Emacs is run. */
685 signal (SIGQUIT
, fatal_error_signal
);
686 signal (SIGILL
, fatal_error_signal
);
687 signal (SIGTRAP
, fatal_error_signal
);
689 signal (SIGABRT
, fatal_error_signal
);
692 signal (SIGHWE
, fatal_error_signal
);
695 signal (SIGPRE
, fatal_error_signal
);
698 signal (SIGORE
, fatal_error_signal
);
701 signal (SIGUME
, fatal_error_signal
);
704 signal (SIGDLK
, fatal_error_signal
);
707 signal (SIGCPULIM
, fatal_error_signal
);
710 /* This is missing on some systems - OS/2, for example. */
711 signal (SIGIOT
, fatal_error_signal
);
714 signal (SIGEMT
, fatal_error_signal
);
716 signal (SIGFPE
, fatal_error_signal
);
718 signal (SIGBUS
, fatal_error_signal
);
720 signal (SIGSEGV
, fatal_error_signal
);
722 signal (SIGSYS
, fatal_error_signal
);
724 signal (SIGTERM
, fatal_error_signal
);
726 signal (SIGXCPU
, fatal_error_signal
);
729 signal (SIGXFSZ
, fatal_error_signal
);
733 /* This just means available memory is getting low. */
734 signal (SIGDANGER
, memory_warning_signal
);
738 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
739 signal (SIGXCPU
, fatal_error_signal
);
741 signal (SIGIOINT
, fatal_error_signal
);
743 signal (SIGGRANT
, fatal_error_signal
);
744 signal (SIGRETRACT
, fatal_error_signal
);
745 signal (SIGSOUND
, fatal_error_signal
);
746 signal (SIGMSG
, fatal_error_signal
);
750 noninteractive1
= noninteractive
;
752 /* Perform basic initializations (not merely interning symbols) */
759 init_syntax_once (); /* Create standard syntax table. */
760 /* Must be done before init_buffer */
761 init_casetab_once ();
762 init_buffer_once (); /* Create buffer table and some buffers */
763 init_minibuf_once (); /* Create list of minibuffers */
764 /* Must precede init_window_once */
765 init_window_once (); /* Init the window system */
771 running_asynch_code
= 0;
774 /* Call early 'cause init_environment needs it. */
776 /* Set defaults for several environment variables. */
777 if (initialized
) init_environment (argc
, argv
, skip_args
);
778 else init_gettimeofday ();
782 /* Initialize environment from registry settings. */
786 /* egetenv is a pretty low-level facility, which may get called in
787 many circumstances; it seems flimsy to put off initializing it
788 until calling init_callproc. */
789 set_process_environment ();
790 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
791 if this is not done. Do it after set_process_environment so that we
792 don't pollute Vprocess_environment. */
797 init_buffer (); /* Init default directory of main buffer */
799 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
800 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
801 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
807 init_vms_input ();/* init_display calls get_frame_size, that needs this */
809 init_display (); /* Determine terminal type. init_sys_modes uses results */
811 init_keyboard (); /* This too must precede init_sys_modes */
813 init_vmsproc (); /* And this too. */
815 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
819 #ifdef LISP_FLOAT_TYPE
826 #ifdef CLASH_DETECTION
828 #endif /* CLASH_DETECTION */
830 /* Intern the names of all standard functions and variables; define standard keys */
834 /* The basic levels of Lisp must come first */
835 /* And data must come first of all
836 for the sake of symbols like error-message */
849 syms_of_casefiddle ();
853 #ifndef NO_DIR_LIBRARY
855 #endif /* not NO_DIR_LIBRARY */
861 #ifdef CLASH_DETECTION
863 #endif /* CLASH_DETECTION */
878 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
885 #ifdef HAVE_X_WINDOWS
892 #endif /* HAVE_X_WINDOWS */
894 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
900 #endif /* HAVE_MENUS */
903 syms_of_win32term ();
905 syms_of_win32faces ();
906 syms_of_win32select ();
907 syms_of_win32menu ();
908 #endif /* HAVE_NTGUI */
918 keys_of_casefiddle ();
932 /* Handle -l loadup-and-dump, args passed by Makefile. */
933 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
934 Vtop_level
= Fcons (intern ("load"),
935 Fcons (build_string (file
), Qnil
));
937 /* Unless next switch is -nl, load "loadup.el" first thing. */
938 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
939 Vtop_level
= Fcons (intern ("load"),
940 Fcons (build_string ("loadup.el"), Qnil
));
941 #endif /* CANNOT_DUMP */
946 /* Erase any pre-dump messages in the message log, to avoid confusion */
947 Lisp_Object old_log_max
;
948 old_log_max
= Vmessage_log_max
;
949 XSETFASTINT (Vmessage_log_max
, 0);
950 message_dolog ("", 0, 1);
951 Vmessage_log_max
= old_log_max
;
955 /* If the execution TZ happens to be the same as the dump TZ,
956 change it to some other value and then change it back,
957 to force the underlying implementation to reload the TZ info.
958 This is needed on implementations that load TZ info from files,
959 since the TZ file contents may differ between dump and execution. */
960 char *tz
= getenv ("TZ");
961 if (tz
&& !strcmp (tz
, dump_tz
))
973 #ifdef LOCALTIME_CACHE
974 /* Some versions of localtime have a bug. They cache the value of the time
975 zone rather than looking it up every time. Since localtime() is
976 called to bolt the undumping time into the undumped emacs, this
977 results in localtime ignoring the TZ environment variable.
978 This flushes the new TZ value into localtime. */
980 #endif /* defined (LOCALTIME_CACHE) */
982 /* Enter editor command loop. This never returns. */
987 /* Sort the args so we can find the most important ones
988 at the beginning of argv. */
990 /* First, here's a table of all the standard options. */
1000 struct standard_args standard_args
[] =
1002 { "-version", "--version", 110, 0 },
1003 { "-help", "--help", 110, 0 },
1004 { "-nl", "--no-shared-memory", 100, 0 },
1006 { "-map", "--map-data", 100, 0 },
1008 { "-t", "--terminal", 90, 1 },
1009 { "-d", "--display", 80, 1 },
1010 { "-display", 0, 80, 1 },
1011 { "-nw", "--no-windows", 70, 0 },
1012 { "-batch", "--batch", 60, 0 },
1013 { "-q", "--no-init-file", 50, 0 },
1014 { "-no-init-file", 0, 50, 0 },
1015 { "-no-site-file", "--no-site-file", 40, 0 },
1016 { "-u", "--user", 30, 1 },
1017 { "-user", 0, 30, 1 },
1018 { "-debug-init", "--debug-init", 20, 0 },
1019 { "-i", "--icon-type", 15, 0 },
1020 { "-itype", 0, 15, 0 },
1021 { "-iconic", "--iconic", 15, 0 },
1022 { "-bg", "--background-color", 10, 1 },
1023 { "-background", 0, 10, 1 },
1024 { "-fg", "--foreground-color", 10, 1 },
1025 { "-foreground", 0, 10, 1 },
1026 { "-bd", "--border-color", 10, 1 },
1027 { "-bw", "--border-width", 10, 1 },
1028 { "-ib", "--internal-border", 10, 1 },
1029 { "-ms", "--mouse-color", 10, 1 },
1030 { "-cr", "--cursor-color", 10, 1 },
1031 { "-fn", "--font", 10, 1 },
1032 { "-font", 0, 10, 1 },
1033 { "-g", "--geometry", 10, 1 },
1034 { "-geometry", 0, 10, 1 },
1035 { "-T", "--title", 10, 1 },
1036 { "-name", "--name", 10, 1 },
1037 { "-xrm", "--xrm", 10, 1 },
1038 { "-r", "--reverse-video", 5, 0 },
1040 { "-reverse", 0, 5, 0 },
1041 { "-vb", "--vertical-scroll-bars", 5, 0 },
1042 /* These have the same priority as ordinary file name args,
1043 so they are not reordered with respect to those. */
1044 { "-L", "--directory", 0, 1 },
1045 { "-directory", 0, 0, 1 },
1046 { "-l", "--load", 0, 1 },
1047 { "-load", 0, 0, 1 },
1048 { "-f", "--funcall", 0, 1 },
1049 { "-funcall", 0, 0, 1 },
1050 { "-eval", "--eval", 0, 1 },
1051 { "-insert", "--insert", 0, 1 },
1052 /* This should be processed after ordinary file name args and the like. */
1053 { "-kill", "--kill", -10, 0 },
1056 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1057 so that the highest priority ones come first.
1058 Do not change the order of elements of equal priority.
1059 If an option takes an argument, keep it and its argument together. */
1062 sort_args (argc
, argv
)
1066 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1067 /* For each element of argv,
1068 the corresponding element of options is:
1069 0 for an option that takes no arguments,
1070 1 for an option that takes one argument, etc.
1071 -1 for an ordinary non-option argument. */
1072 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1073 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1078 /* Categorize all the options,
1079 and figure out which argv elts are option arguments. */
1080 for (from
= 1; from
< argc
; from
++)
1084 if (argv
[from
][0] == '-')
1089 /* Look for a match with a known old-fashioned option. */
1090 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1091 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1093 options
[from
] = standard_args
[i
].nargs
;
1094 priority
[from
] = standard_args
[i
].priority
;
1095 if (from
+ standard_args
[i
].nargs
>= argc
)
1096 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1097 from
+= standard_args
[i
].nargs
;
1101 /* Look for a match with a known long option.
1102 MATCH is -1 if no match so far, -2 if two or more matches so far,
1103 >= 0 (the table index of the match) if just one match so far. */
1104 if (argv
[from
][1] == '-')
1107 thislen
= strlen (argv
[from
]);
1108 equals
= index (argv
[from
], '=');
1110 thislen
= equals
- argv
[from
];
1113 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1114 if (standard_args
[i
].longname
1115 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1124 /* If we found exactly one match, use that. */
1127 options
[from
] = standard_args
[match
].nargs
;
1128 priority
[from
] = standard_args
[match
].priority
;
1129 /* If --OPTION=VALUE syntax is used,
1130 this option uses just one argv element. */
1133 if (from
+ options
[from
] >= argc
)
1134 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1135 from
+= options
[from
];
1142 /* Copy the arguments, in order of decreasing priority, to NEW. */
1147 int best_priority
= -9999;
1149 /* Find the highest priority remaining option.
1150 If several have equal priority, take the first of them. */
1151 for (from
= 1; from
< argc
; from
++)
1153 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1155 best_priority
= priority
[from
];
1158 /* Skip option arguments--they are tied to the options. */
1159 if (options
[from
] > 0)
1160 from
+= options
[from
];
1166 /* Copy the highest priority remaining option, with its args, to NEW. */
1167 new[to
++] = argv
[best
];
1168 for (i
= 0; i
< options
[best
]; i
++)
1169 new[to
++] = argv
[best
+ i
+ 1];
1171 /* Clear out this option in ARGV. */
1173 for (i
= 0; i
< options
[best
]; i
++)
1174 argv
[best
+ i
+ 1] = 0;
1177 bcopy (new, argv
, sizeof (char *) * argc
);
1180 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1181 "Exit the Emacs job and kill it.\n\
1182 If ARG is an integer, return ARG as the exit program code.\n\
1183 If ARG is a string, stuff it as keyboard input.\n\n\
1184 The value of `kill-emacs-hook', if not void,\n\
1185 is a list of functions (of no args),\n\
1186 all of which are called before Emacs is actually killed.")
1190 Lisp_Object hook
, hook1
;
1192 struct gcpro gcpro1
;
1199 if (!NILP (Vrun_hooks
) && !noninteractive
)
1200 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1204 /* Is it really necessary to do this deassign
1205 when we are going to exit anyway? */
1210 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1212 /* If we have an auto-save list file,
1213 kill it because we are exiting Emacs deliberately (not crashing).
1214 Do it after shut_down_emacs, which does an auto-save. */
1215 if (STRINGP (Vauto_save_list_file_name
))
1216 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1218 exit (INTEGERP (arg
) ? XINT (arg
)
1229 /* Perform an orderly shutdown of Emacs. Autosave any modified
1230 buffers, kill any child processes, clean up the terminal modes (if
1231 we're in the foreground), and other stuff like that. Don't perform
1232 any redisplay; this may be called when Emacs is shutting down in
1233 the background, or after its X connection has died.
1235 If SIG is a signal number, print a message for it.
1237 This is called by fatal signal handlers, X protocol error handlers,
1241 shut_down_emacs (sig
, no_x
, stuff
)
1245 /* Prevent running of hooks from now on. */
1248 /* If we are controlling the terminal, reset terminal modes */
1249 #ifdef EMACS_HAVE_TTY_PGRP
1251 int pgrp
= EMACS_GETPGRP (0);
1254 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1259 if (sig
&& sig
!= SIGTERM
)
1260 fprintf (stderr
, "Fatal error (%d).", sig
);
1268 stuff_buffered_input (stuff
);
1270 kill_buffer_processes (Qnil
);
1271 Fdo_auto_save (Qt
, Qnil
);
1273 #ifdef CLASH_DETECTION
1274 unlock_all_files ();
1278 kill_vms_processes ();
1281 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1282 #ifdef HAVE_X_WINDOWS
1283 /* It's not safe to call intern here. Maybe we are crashing. */
1284 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1285 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1286 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1288 Fx_close_current_connection ();
1289 #endif /* HAVE_X_WINDOWS */
1293 /* There is a tendency for a SIGIO signal to arrive within exit,
1294 and cause a SIGHUP because the input descriptor is already closed. */
1296 signal (SIGIO
, SIG_IGN
);
1306 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1307 "Dump current state of Emacs into data file FILENAME.\n\
1308 This function exists on systems that use HAVE_SHM.")
1310 Lisp_Object filename
;
1312 extern char my_edata
[];
1315 CHECK_STRING (filename
, 0);
1316 filename
= Fexpand_file_name (filename
, Qnil
);
1319 Vpurify_flag
= Qnil
;
1322 /* Tell malloc where start of impure now is */
1323 /* Also arrange for warnings when nearly out of space. */
1324 #ifndef SYSTEM_MALLOC
1325 memory_warnings (my_edata
, malloc_warning
);
1327 map_out_data (XSTRING (filename
)->data
);
1334 #else /* not HAVE_SHM */
1336 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1337 "Dump current state of Emacs into executable file FILENAME.\n\
1338 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1339 This is used in the file `loadup.el' when building Emacs.\n\
1341 Bind `command-line-processed' to nil before dumping,\n\
1342 if you want the dumped Emacs to process its command line\n\
1343 and announce itself normally when it is run.")
1345 Lisp_Object filename
, symfile
;
1347 extern char my_edata
[];
1350 CHECK_STRING (filename
, 0);
1351 filename
= Fexpand_file_name (filename
, Qnil
);
1352 if (!NILP (symfile
))
1354 CHECK_STRING (symfile
, 0);
1355 if (XSTRING (symfile
)->size
)
1356 symfile
= Fexpand_file_name (symfile
, Qnil
);
1360 Vpurify_flag
= Qnil
;
1363 set_time_zone_rule (dump_tz
);
1364 #ifndef LOCALTIME_CACHE
1365 /* Force a tz reload, since set_time_zone_rule doesn't. */
1372 mapout_data (XSTRING (filename
)->data
);
1374 /* Tell malloc where start of impure now is */
1375 /* Also arrange for warnings when nearly out of space. */
1376 #ifndef SYSTEM_MALLOC
1378 /* On Windows, this was done before dumping, and that once suffices.
1379 Meanwhile, my_edata is not valid on Windows. */
1380 memory_warnings (my_edata
, malloc_warning
);
1381 #endif /* not WINDOWSNT */
1383 unexec (XSTRING (filename
)->data
,
1384 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1385 #endif /* not VMS */
1392 #endif /* not HAVE_SHM */
1394 #endif /* not CANNOT_DUMP */
1401 decode_env_path (evarname
, defalt
)
1402 char *evarname
, *defalt
;
1404 register char *path
, *p
;
1408 /* It's okay to use getenv here, because this function is only used
1409 to initialize variables when Emacs starts up, and isn't called
1412 path
= (char *) getenv (evarname
);
1420 p
= index (path
, SEPCHAR
);
1421 if (!p
) p
= path
+ strlen (path
);
1422 lpath
= Fcons (p
- path
? make_string (path
, p
- path
)
1423 : build_string ("."),
1430 return Fnreverse (lpath
);
1437 defsubr (&Sdump_emacs_data
);
1439 defsubr (&Sdump_emacs
);
1443 defsubr (&Skill_emacs
);
1445 defsubr (&Sinvocation_name
);
1446 defsubr (&Sinvocation_directory
);
1448 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1449 "Args passed by shell to Emacs, as a list of strings.");
1451 DEFVAR_LISP ("system-type", &Vsystem_type
,
1452 "Value is symbol indicating type of operating system you are using.");
1453 Vsystem_type
= intern (SYSTEM_TYPE
);
1455 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1456 "Value is string indicating configuration Emacs was built for.");
1457 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1459 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1460 "String containing the configuration options Emacs was built with.");
1461 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1463 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1464 "Non-nil means Emacs is running without interactive terminal.");
1466 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1467 "Hook to be run whenever kill-emacs is called.\n\
1468 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1469 in other similar situations), functions placed on this hook should not\n\
1470 expect to be able to interact with the user. To ask for confirmation,\n\
1471 see `kill-emacs-query-functions' instead.");
1472 Vkill_emacs_hook
= Qnil
;
1474 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1475 "Priority for Emacs to run at.\n\
1476 This value is effective only if set before Emacs is dumped,\n\
1477 and only if the Emacs executable is installed with setuid to permit\n\
1478 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1479 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1480 before you compile Emacs, to enable the code for this feature.");
1483 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1484 "The program name that was used to run Emacs.\n\
1485 Any directory names are omitted.");
1487 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1488 "The directory in which the Emacs executable was found, to run it.\n\
1489 The value is nil if that directory's name is not known.");
1491 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1492 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1493 This is non-nil when we can't find those directories in their standard\n\
1494 installed locations, but we can find them\n\
1495 near where the Emacs executable was found.");
1496 Vinstallation_directory
= Qnil
;