1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 1986, 1987, 1993, 1994 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 <default_acl.h>
46 #include "intervals.h"
49 #include "syssignal.h"
56 extern void malloc_warning ();
57 extern char *index ();
58 extern char *strerror ();
60 /* Command line args from shell, as list of strings */
61 Lisp_Object Vcommand_line_args
;
63 /* The name under which Emacs was invoked, with any leading directory
65 Lisp_Object Vinvocation_name
;
67 /* The directory name from which Emacs was invoked. */
68 Lisp_Object Vinvocation_directory
;
70 /* The directory name in which to find subdirs such as lisp and etc.
71 nil means get them only from PATH_LOADSEARCH. */
72 Lisp_Object Vinstallation_directory
;
74 /* Hook run by `kill-emacs' before it does really anything. */
75 Lisp_Object Vkill_emacs_hook
;
77 /* Set nonzero after Emacs has started up the first time.
78 Prevents reinitialization of the Lisp world and keymaps
79 on subsequent starts. */
82 /* Variable whose value is symbol giving operating system type. */
83 Lisp_Object Vsystem_type
;
85 /* Variable whose value is string giving configuration built for. */
86 Lisp_Object Vsystem_configuration
;
88 /* Variable whose value is string giving configuration options,
89 for use when reporting bugs. */
90 Lisp_Object Vsystem_configuration_options
;
92 /* If non-zero, emacs should not attempt to use an window-specific code,
93 but instead should use the virtual terminal under which it was started */
94 int inhibit_window_system
;
96 /* If nonzero, set Emacs to run at this priority. This is also used
97 in child_setup and sys_suspend to make sure subshells run at normal
98 priority; Those functions have their own extern declaration. */
101 /* If non-zero a filter or a sentinel is running. Tested to save the match
102 data on the first attempt to change it inside asynchronous code. */
103 int running_asynch_code
;
107 extern int inherited_pgroup
;
110 #ifdef HAVE_X_WINDOWS
111 /* If non-zero, -d was specified, meaning we're using some window system. */
115 /* An address near the bottom of the stack.
116 Tells GC how to save a copy of the stack. */
119 #ifdef HAVE_X_WINDOWS
120 extern Lisp_Object Vwindow_system
;
121 #endif /* HAVE_X_WINDOWS */
123 #ifdef USG_SHARED_LIBRARIES
124 /* If nonzero, this is the place to put the end of the writable segment
127 unsigned int bss_end
= 0;
130 /* Nonzero means running Emacs without interactive terminal. */
134 /* Value of Lisp variable `noninteractive'.
135 Normally same as C variable `noninteractive'
136 but nothing terrible happens if user sets this one. */
140 /* Save argv and argc. */
144 static void sort_args ();
146 /* Signal code for the fatal signal that was received */
147 int fatal_error_code
;
149 /* Nonzero if handling a fatal error already */
150 int fatal_error_in_progress
;
152 /* Handle bus errors, illegal instruction, etc. */
154 fatal_error_signal (sig
)
157 fatal_error_code
= sig
;
158 signal (sig
, SIG_DFL
);
160 /* If fatal error occurs in code below, avoid infinite recursion. */
161 if (! fatal_error_in_progress
)
163 fatal_error_in_progress
= 1;
165 shut_down_emacs (sig
, 0, Qnil
);
169 LIB$
STOP (SS$_ABORT
);
171 /* Signal the same code; this time it will really be fatal.
172 Remember that since we're in a signal handler, the signal we're
173 going to send is probably blocked, so we have to unblock it if we
174 want to really receive it. */
176 sigunblock (sigmask (fatal_error_code
));
178 kill (getpid (), fatal_error_code
);
184 /* Handler for SIGDANGER. */
186 memory_warning_signal (sig
)
189 signal (sig
, memory_warning_signal
);
191 malloc_warning ("Operating system warns that virtual memory is running low.\n");
193 /* It might be unsafe to call do_auto_save now. */
194 force_auto_save_soon ();
198 /* Code for dealing with Lisp access to the Unix command line */
201 init_cmdargs (argc
, argv
, skip_args
)
207 Lisp_Object name
, dir
;
212 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
213 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
214 /* If we got no directory in argv[0], search PATH to find where
215 Emacs actually came from. */
216 if (NILP (Vinvocation_directory
))
219 int yes
= openp (Vexec_path
, Vinvocation_name
,
220 EXEC_SUFFIXES
, &found
, 1);
222 Vinvocation_directory
= Ffile_name_directory (found
);
225 Vinstallation_directory
= Qnil
;
227 if (!NILP (Vinvocation_directory
))
229 dir
= Vinvocation_directory
;
230 name
= Fexpand_file_name (Vinvocation_name
, dir
);
233 Lisp_Object tem
, lib_src_exists
;
234 Lisp_Object etc_exists
, info_exists
;
236 /* See if dir contains subdirs for use by Emacs.
237 Check for the ones that would exist in a build directory,
238 not including lisp and info. */
239 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
240 lib_src_exists
= Ffile_exists_p (tem
);
241 if (!NILP (lib_src_exists
))
243 tem
= Fexpand_file_name (build_string ("etc"), dir
);
244 etc_exists
= Ffile_exists_p (tem
);
245 if (!NILP (etc_exists
))
247 Vinstallation_directory
248 = Ffile_name_as_directory (dir
);
253 /* See if dir's parent contains those subdirs. */
254 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
255 lib_src_exists
= Ffile_exists_p (tem
);
256 if (!NILP (lib_src_exists
))
258 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
259 etc_exists
= Ffile_exists_p (tem
);
260 if (!NILP (etc_exists
))
262 tem
= Fexpand_file_name (build_string (".."), dir
);
263 Vinstallation_directory
264 = Ffile_name_as_directory (tem
);
269 /* If the Emacs executable is actually a link,
270 next try the dir that the link points into. */
271 tem
= Ffile_symlink_p (name
);
274 name
= Fexpand_file_name (tem
, dir
);
275 dir
= Ffile_name_directory (name
);
282 Vcommand_line_args
= Qnil
;
284 for (i
= argc
- 1; i
>= 0; i
--)
286 if (i
== 0 || i
> skip_args
)
288 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
292 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
293 "Return the program name that was used to run Emacs.\n\
294 Any directory names are omitted.")
297 return Fcopy_sequence (Vinvocation_name
);
300 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
302 "Return the directory name in which the Emacs executable was located")
305 return Fcopy_sequence (Vinvocation_directory
);
310 #ifdef LINK_CRTL_SHARE
311 #ifdef SHAREABLE_LIB_BUG
312 extern noshare
char **environ
;
313 #endif /* SHAREABLE_LIB_BUG */
314 #endif /* LINK_CRTL_SHARE */
317 #ifndef ORDINARY_LINK
318 /* We don't include crtbegin.o and crtend.o in the link,
319 so these functions and variables might be missed.
320 Provide dummy definitions to avoid error.
321 (We don't have any real constructors or destructors.) */
323 #ifndef GCC_CTORS_IN_LIBC
326 __do_global_ctors_aux ()
330 /* Linux has a bug in its library; avoid an error. */
332 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
334 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
335 #endif /* GCC_CTORS_IN_LIBC */
338 #endif /* __GNUC__ */
339 #endif /* ORDINARY_LINK */
341 /* Test whether the next argument in ARGV matches SSTR or a prefix of
342 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
343 (the argument is supposed to have a value) store in *VALPTR either
344 the next argument or the portion of this one after the equal sign.
345 ARGV is read starting at position *SKIPPTR; this index is advanced
346 by the number of arguments used.
348 Too bad we can't just use getopt for all of this, but we don't have
349 enough information to do it right. */
352 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
365 /* Don't access argv[argc]; give up in advance. */
366 if (argc
<= *skipptr
+ 1)
369 arg
= argv
[*skipptr
+1];
372 if (strcmp (arg
, sstr
) == 0)
376 *valptr
= argv
[*skipptr
+2];
383 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
384 ? p
- arg
: strlen (arg
));
385 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
387 else if (valptr
== NULL
)
398 else if (argv
[*skipptr
+2] != NULL
)
400 *valptr
= argv
[*skipptr
+2];
411 main (argc
, argv
, envp
)
416 char stack_bottom_variable
;
421 sort_args (argc
, argv
);
423 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
426 tem
= Fsymbol_value (intern ("emacs-version"));
429 fprintf (stderr
, "Invalid value of `emacs-version'\n");
434 printf ("%s\n", XSTRING (tem
)->data
);
439 /* Map in shared memory, if we are using that. */
441 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
444 /* The shared memory was just restored, which clobbered this. */
450 /* The shared memory was just restored, which clobbered this. */
456 extern int malloc_cookie
;
458 /* This helps out unexnext.c. */
460 if (malloc_jumpstart (malloc_cookie
) != 0)
461 printf ("malloc jumpstart failed!\n");
465 /* If -map specified, map the data file in */
468 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
472 #ifdef LINK_CRTL_SHARE
473 #ifdef SHAREABLE_LIB_BUG
474 /* Bletcherous shared libraries! */
476 stdin
= fdopen (0, "r");
478 stdout
= fdopen (1, "w");
480 stderr
= fdopen (2, "w");
483 #endif /* SHAREABLE_LIB_BUG */
484 #endif /* LINK_CRTL_SHARE */
487 /* Record (approximately) where the stack begins. */
488 stack_bottom
= &stack_bottom_variable
;
490 #ifdef RUN_TIME_REMAP
492 run_time_remap (argv
[0]);
495 #ifdef USG_SHARED_LIBRARIES
504 /* If USE_DOMAIN_ACLS environment variable exists,
505 use ACLs rather than UNIX modes. */
506 if (egetenv ("USE_DOMAIN_ACLS"))
507 default_acl (USE_DEFACL
);
511 #ifndef SYSTEM_MALLOC
514 /* Arrange to get warning messages as memory fills up. */
515 memory_warnings (0, malloc_warning
);
517 /* Arrange to disable interrupt input while malloc and friends are
519 uninterrupt_malloc ();
521 #endif /* not SYSTEM_MALLOC */
524 /* We do all file input/output as binary files. When we need to translate
525 newlines, we do that manually. */
527 (stdin
)->_flag
&= ~_IOTEXT
;
528 (stdout
)->_flag
&= ~_IOTEXT
;
529 (stderr
)->_flag
&= ~_IOTEXT
;
532 #ifdef SET_EMACS_PRIORITY
534 nice (emacs_priority
);
536 #endif /* SET_EMACS_PRIORITY */
538 #ifdef EXTRA_INITIALIZE
542 inhibit_window_system
= 0;
544 /* Handle the -t switch, which specifies filename to use as terminal */
547 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
552 result
= open (term
, O_RDWR
, 2 );
555 char *errstring
= strerror (errno
);
556 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
562 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
565 fprintf (stderr
, "Using %s\n", term
);
566 #ifdef HAVE_X_WINDOWS
567 inhibit_window_system
= 1; /* -t => -nw */
571 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
572 inhibit_window_system
= 1;
574 /* Handle the -batch switch, which means don't do interactive display. */
576 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
579 /* Handle the --help option, which gives a usage message.. */
580 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
583 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
584 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
585 \(Arguments above this line must be first; those below may be in any order)\n\
586 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
587 file-to-visit [--kill]\n", argv
[0]);
591 #ifdef HAVE_X_WINDOWS
592 /* Stupid kludge to catch command-line display spec. We can't
593 handle this argument entirely in window system dependent code
594 because we don't even know which window system dependent code
595 to run until we've recognized this argument. */
599 int count_before
= skip_args
;
601 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
603 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
606 /* If we have the form --display=NAME,
607 convert it into -d name.
608 This requires inserting a new element into argv. */
609 if (displayname
!= 0 && skip_args
- count_before
== 1)
611 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
614 for (j
= 0; j
< count_before
+ 1; j
++)
616 new[count_before
+ 1] = "-d";
617 new[count_before
+ 2] = displayname
;
618 for (j
= count_before
+ 2; j
<argc
; j
++)
619 new[j
+ 1] = argv
[j
];
623 /* Change --display to -d, when its arg is separate. */
624 else if (displayname
!= 0 && skip_args
> count_before
625 && argv
[count_before
+ 1][1] == '-')
626 argv
[count_before
] = "-d";
628 /* Don't actually discard this arg. */
629 skip_args
= count_before
;
633 if (! noninteractive
)
638 inherited_pgroup
= EMACS_GETPGRP (0);
639 setpgrp (0, getpid ());
642 #if defined (USG5) && defined (INTERRUPT_INPUT)
654 ! noninteractive
|| initialized
660 /* Don't catch these signals in batch mode if not initialized.
661 On some machines, this sets static data that would make
662 signal fail to work right when the dumped Emacs is run. */
663 signal (SIGHUP
, fatal_error_signal
);
664 signal (SIGQUIT
, fatal_error_signal
);
665 signal (SIGILL
, fatal_error_signal
);
666 signal (SIGTRAP
, fatal_error_signal
);
668 signal (SIGABRT
, fatal_error_signal
);
671 signal (SIGHWE
, fatal_error_signal
);
674 signal (SIGPRE
, fatal_error_signal
);
677 signal (SIGORE
, fatal_error_signal
);
680 signal (SIGUME
, fatal_error_signal
);
683 signal (SIGDLK
, fatal_error_signal
);
686 signal (SIGCPULIM
, fatal_error_signal
);
689 /* This is missing on some systems - OS/2, for example. */
690 signal (SIGIOT
, fatal_error_signal
);
693 signal (SIGEMT
, fatal_error_signal
);
695 signal (SIGFPE
, fatal_error_signal
);
697 signal (SIGBUS
, fatal_error_signal
);
699 signal (SIGSEGV
, fatal_error_signal
);
701 signal (SIGSYS
, fatal_error_signal
);
703 signal (SIGTERM
, fatal_error_signal
);
705 signal (SIGXCPU
, fatal_error_signal
);
708 signal (SIGXFSZ
, fatal_error_signal
);
712 /* This just means available memory is getting low. */
713 signal (SIGDANGER
, memory_warning_signal
);
717 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
718 signal (SIGXCPU
, fatal_error_signal
);
720 signal (SIGIOINT
, fatal_error_signal
);
722 signal (SIGGRANT
, fatal_error_signal
);
723 signal (SIGRETRACT
, fatal_error_signal
);
724 signal (SIGSOUND
, fatal_error_signal
);
725 signal (SIGMSG
, fatal_error_signal
);
729 noninteractive1
= noninteractive
;
731 /* Perform basic initializations (not merely interning symbols) */
738 init_syntax_once (); /* Create standard syntax table. */
739 /* Must be done before init_buffer */
740 init_casetab_once ();
741 init_buffer_once (); /* Create buffer table and some buffers */
742 init_minibuf_once (); /* Create list of minibuffers */
743 /* Must precede init_window_once */
744 init_window_once (); /* Init the window system */
750 running_asynch_code
= 0;
753 /* Call early 'cause init_environment needs it. */
755 /* Set defaults for several environment variables. */
756 if (initialized
) init_environment (argc
, argv
, skip_args
);
759 /* egetenv is a pretty low-level facility, which may get called in
760 many circumstances; it seems flimsy to put off initializing it
761 until calling init_callproc. */
762 set_process_environment ();
763 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
764 if this is not done. Do it after set_process_environment so that we
765 don't pollute Vprocess_environment. */
770 init_buffer (); /* Init default directory of main buffer */
772 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
773 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
774 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
780 init_vms_input ();/* init_display calls get_frame_size, that needs this */
782 init_display (); /* Determine terminal type. init_sys_modes uses results */
784 init_keyboard (); /* This too must precede init_sys_modes */
786 init_vmsproc (); /* And this too. */
788 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
792 #ifdef LISP_FLOAT_TYPE
799 #ifdef CLASH_DETECTION
801 #endif /* CLASH_DETECTION */
803 /* Intern the names of all standard functions and variables; define standard keys */
807 /* The basic levels of Lisp must come first */
808 /* And data must come first of all
809 for the sake of symbols like error-message */
822 syms_of_casefiddle ();
826 #ifndef NO_DIR_LIBRARY
828 #endif /* not NO_DIR_LIBRARY */
834 #ifdef CLASH_DETECTION
836 #endif /* CLASH_DETECTION */
851 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
858 #ifdef HAVE_X_WINDOWS
867 #endif /* HAVE_X_MENU */
868 #endif /* HAVE_X_WINDOWS */
870 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
883 keys_of_casefiddle ();
897 /* Handle -l loadup-and-dump, args passed by Makefile. */
898 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
899 Vtop_level
= Fcons (intern ("load"),
900 Fcons (build_string (file
), Qnil
));
902 /* Unless next switch is -nl, load "loadup.el" first thing. */
903 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
904 Vtop_level
= Fcons (intern ("load"),
905 Fcons (build_string ("loadup.el"), Qnil
));
906 #endif /* CANNOT_DUMP */
911 #if defined (sun) || defined (LOCALTIME_CACHE)
912 /* sun's localtime has a bug. it caches the value of the time
913 zone rather than looking it up every time. Since localtime() is
914 called to bolt the undumping time into the undumped emacs, this
915 results in localtime ignoring the TZ environment variable.
916 This flushes the new TZ value into localtime. */
918 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
920 /* Handle the GNU standard option --version. */
921 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
924 ver
= call0 (intern ("emacs-version"));
926 printf ("%s\n", XSTRING (ver
)->data
);
930 /* Enter editor command loop. This never returns. */
935 /* Sort the args so we can find the most important ones
936 at the beginning of argv. */
938 /* First, here's a table of all the standard options. */
948 struct standard_args standard_args
[] =
950 { "-nl", "--no-shared-memory", 100, 0 },
951 { "-map", "--map-data", 100, 0 },
952 { "-t", "--terminal", 90, 1 },
953 { "-d", "--display", 80, 1 },
954 { "-display", 0, 80, 1 },
955 { "-nw", "--no-windows", 70, 0 },
956 { "-batch", "--batch", 60, 0 },
957 { "-q", "--no-init-file", 50, 0 },
958 { "-no-init-file", 0, 50, 0 },
959 { "-no-site-file", "--no-site-file", 40, 0 },
960 { "-u", "--user", 30, 1 },
961 { "-user", 0, 30, 1 },
962 { "-debug-init", "--debug-init", 20, 0 },
963 { "-bg", "--background-color", 10, 1 },
964 { "-background", 0, 10, 1 },
965 { "-fg", "--foreground-color", 10, 1 },
966 { "-foreground", 0, 10, 1 },
967 { "-bd", "--border-color", 10, 1 },
968 { "-bw", "--border-width", 10, 1 },
969 { "-ib", "--internal-border", 10, 1 },
970 { "-ms", "--mouse-color", 10, 1 },
971 { "-cr", "--cursor-color", 10, 1 },
972 { "-fn", "--font", 10, 1 },
973 { "-font", 0, 10, 1 },
974 { "-g", "--geometry", 10, 1 },
975 { "-geometry", 0, 10, 1 },
976 { "-T", "--title", 10, 1 },
977 { "-i", "--icon-type", 10, 1 },
978 { "-itype", 0, 10, 1 },
979 { "-name", "--name", 10, 1 },
980 { "-xrm", "--xrm", 10, 1 },
981 { "-r", "--reverse-video", 5, 0 },
983 { "-reverse", 0, 5, 0 },
984 { "-vb", "--vertical-scroll-bars", 5, 0 },
985 { "-iconic", "--iconic", 5, 0 },
986 /* These have the same priority as ordinary file name args,
987 so they are not reordered with respect to those. */
988 { "-l", "--load", 0, 1 },
989 { "-load", 0, 0, 1 },
990 { "-f", "--funcall", 0, 1 },
991 { "-funcall", 0, 0, 1 },
992 { "-insert", "--insert", 0, 1 },
993 { "-kill", "--kill", -10, 0 },
996 /* Reorder the elements of ARGV (assumed to have ARGC elements)
997 so that the highest priority ones come first.
998 Do not change the order of elements of equal priority.
999 If an option takes an argument, keep it and its argument together. */
1002 sort_args (argc
, argv
)
1006 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1007 /* For each element of argv,
1008 the corresponding element of options is:
1009 0 for an option that takes no arguments,
1010 1 for an option that takes one argument, etc.
1011 -1 for an ordinary non-option argument. */
1012 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1013 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1018 /* Categorize all the options,
1019 and figure out which argv elts are option arguments. */
1020 for (from
= 1; from
< argc
; from
++)
1024 if (argv
[from
][0] == '-')
1029 /* Look for a match with a known old-fashioned option. */
1030 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1031 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1033 options
[from
] = standard_args
[i
].nargs
;
1034 priority
[from
] = standard_args
[i
].priority
;
1035 from
+= standard_args
[i
].nargs
;
1039 /* Look for a match with a known long option.
1040 MATCH is -1 if no match so far, -2 if two or more matches so far,
1041 >= 0 (the table index of the match) if just one match so far. */
1042 if (argv
[from
][1] == '-')
1045 thislen
= strlen (argv
[from
]);
1046 equals
= index (argv
[from
], '=');
1048 thislen
= equals
- argv
[from
];
1050 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1051 if (!strncmp (argv
[from
], standard_args
[i
].longname
, thislen
))
1059 /* If we found exactly one match, use that. */
1062 options
[from
] = standard_args
[match
].nargs
;
1063 priority
[from
] = standard_args
[match
].priority
;
1064 /* If --OPTION=VALUE syntax is used,
1065 this option uses just one argv element. */
1068 from
+= options
[from
];
1075 /* Copy the arguments, in order of decreasing priority, to NEW. */
1080 int best_priority
= -2;
1082 /* Find the highest priority remaining option.
1083 If several have equal priority, take the first of them. */
1084 for (from
= 1; from
< argc
; from
++)
1086 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1088 best_priority
= priority
[from
];
1091 /* Skip option arguments--they are tied to the options. */
1092 if (options
[from
] > 0)
1093 from
+= options
[from
];
1099 /* Copy the highest priority remaining option, with its args, to NEW. */
1100 new[to
++] = argv
[best
];
1101 for (i
= 0; i
< options
[best
]; i
++)
1102 new[to
++] = argv
[best
+ i
+ 1];
1104 /* Clear out this option in ARGV. */
1106 for (i
= 0; i
< options
[best
]; i
++)
1107 argv
[best
+ i
+ 1] = 0;
1110 bcopy (new, argv
, sizeof (char *) * argc
);
1113 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1114 "Exit the Emacs job and kill it.\n\
1115 If ARG is an integer, return ARG as the exit program code.\n\
1116 If ARG is a string, stuff it as keyboard input.\n\n\
1117 The value of `kill-emacs-hook', if not void,\n\
1118 is a list of functions (of no args),\n\
1119 all of which are called before Emacs is actually killed.")
1123 Lisp_Object hook
, hook1
;
1125 struct gcpro gcpro1
;
1132 if (!NILP (Vrun_hooks
) && !noninteractive
)
1133 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1137 /* Is it really necessary to do this deassign
1138 when we are going to exit anyway? */
1143 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1145 exit (INTEGERP (arg
) ? XINT (arg
)
1156 /* Perform an orderly shutdown of Emacs. Autosave any modified
1157 buffers, kill any child processes, clean up the terminal modes (if
1158 we're in the foreground), and other stuff like that. Don't perform
1159 any redisplay; this may be called when Emacs is shutting down in
1160 the background, or after its X connection has died.
1162 If SIG is a signal number, print a message for it.
1164 This is called by fatal signal handlers, X protocol error handlers,
1168 shut_down_emacs (sig
, no_x
, stuff
)
1172 /* Prevent running of hooks from now on. */
1175 /* If we are controlling the terminal, reset terminal modes */
1176 #ifdef EMACS_HAVE_TTY_PGRP
1178 int pgrp
= EMACS_GETPGRP (0);
1181 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1186 if (sig
&& sig
!= SIGTERM
)
1187 fprintf (stderr
, "Fatal error (%d).", sig
);
1195 stuff_buffered_input (stuff
);
1197 kill_buffer_processes (Qnil
);
1198 Fdo_auto_save (Qt
, Qnil
);
1200 #ifdef CLASH_DETECTION
1201 unlock_all_files ();
1205 kill_vms_processes ();
1208 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1209 #ifdef HAVE_X_WINDOWS
1210 /* It's not safe to call intern here. Maybe we are crashing. */
1211 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1212 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1213 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1215 Fx_close_current_connection ();
1216 #endif /* HAVE_X_WINDOWS */
1220 /* There is a tendency for a SIGIO signal to arrive within exit,
1221 and cause a SIGHUP because the input descriptor is already closed. */
1223 signal (SIGIO
, SIG_IGN
);
1230 /* Nothing like this can be implemented on an Apollo.
1235 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1236 "Dump current state of Emacs into data file FILENAME.\n\
1237 This function exists on systems that use HAVE_SHM.")
1239 Lisp_Object intoname
;
1241 extern char my_edata
[];
1244 CHECK_STRING (intoname
, 0);
1245 intoname
= Fexpand_file_name (intoname
, Qnil
);
1248 Vpurify_flag
= Qnil
;
1251 /* Tell malloc where start of impure now is */
1252 /* Also arrange for warnings when nearly out of space. */
1253 #ifndef SYSTEM_MALLOC
1254 memory_warnings (&my_edata
, malloc_warning
);
1256 map_out_data (XSTRING (intoname
)->data
);
1263 #else /* not HAVE_SHM */
1265 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1266 "Dump current state of Emacs into executable file FILENAME.\n\
1267 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1268 This is used in the file `loadup.el' when building Emacs.\n\
1270 Bind `command-line-processed' to nil before dumping,\n\
1271 if you want the dumped Emacs to process its command line\n\
1272 and announce itself normally when it is run.")
1274 Lisp_Object intoname
, symname
;
1276 extern char my_edata
[];
1279 CHECK_STRING (intoname
, 0);
1280 intoname
= Fexpand_file_name (intoname
, Qnil
);
1281 if (!NILP (symname
))
1283 CHECK_STRING (symname
, 0);
1284 if (XSTRING (symname
)->size
)
1285 symname
= Fexpand_file_name (symname
, Qnil
);
1289 Vpurify_flag
= Qnil
;
1293 mapout_data (XSTRING (intoname
)->data
);
1295 /* Tell malloc where start of impure now is */
1296 /* Also arrange for warnings when nearly out of space. */
1297 #ifndef SYSTEM_MALLOC
1299 /* On Windows, this was done before dumping, and that once suffices.
1300 Meanwhile, my_edata is not valid on Windows. */
1301 memory_warnings (&my_edata
, malloc_warning
);
1302 #endif /* not WINDOWSNT */
1304 unexec (XSTRING (intoname
)->data
,
1305 !NILP (symname
) ? XSTRING (symname
)->data
: 0, &my_edata
, 0, 0);
1306 #endif /* not VMS */
1313 #endif /* not HAVE_SHM */
1315 #endif /* not CANNOT_DUMP */
1322 decode_env_path (evarname
, defalt
)
1323 char *evarname
, *defalt
;
1325 register char *path
, *p
;
1329 /* It's okay to use getenv here, because this function is only used
1330 to initialize variables when Emacs starts up, and isn't called
1333 path
= (char *) getenv (evarname
);
1341 p
= index (path
, SEPCHAR
);
1342 if (!p
) p
= path
+ strlen (path
);
1343 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1350 return Fnreverse (lpath
);
1357 defsubr (&Sdump_emacs_data
);
1359 defsubr (&Sdump_emacs
);
1363 defsubr (&Skill_emacs
);
1365 defsubr (&Sinvocation_name
);
1366 defsubr (&Sinvocation_directory
);
1368 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1369 "Args passed by shell to Emacs, as a list of strings.");
1371 DEFVAR_LISP ("system-type", &Vsystem_type
,
1372 "Value is symbol indicating type of operating system you are using.");
1373 Vsystem_type
= intern (SYSTEM_TYPE
);
1375 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1376 "Value is string indicating configuration Emacs was built for.");
1377 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1379 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1380 "String containing the configuration options Emacs was built with.");
1381 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1383 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1384 "Non-nil means Emacs is running without interactive terminal.");
1386 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1387 "Hook to be run whenever kill-emacs is called.\n\
1388 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1389 in other similar situations), functions placed on this hook should not\n\
1390 expect to be able to interact with the user. To ask for confirmation,\n\
1391 see `kill-emacs-query-functions' instead.");
1392 Vkill_emacs_hook
= Qnil
;
1394 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1395 "Priority for Emacs to run at.\n\
1396 This value is effective only if set before Emacs is dumped,\n\
1397 and only if the Emacs executable is installed with setuid to permit\n\
1398 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1399 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1400 before you compile Emacs, to enable the code for this feature.");
1403 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1404 "The program name that was used to run Emacs.\n\
1405 Any directory names are omitted.");
1407 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1408 "The directory in which the Emacs executable was found, to run it.\n\
1409 The value is nil if that directory's name is not known.");
1411 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1412 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1413 This is non-nil when we can't find those directories in their standard\n\
1414 installed locations, but we can find them\n\
1415 near where the Emacs executable was found.");
1416 Vinstallation_directory
= Qnil
;