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 <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
497 brk ((void *)bss_end
);
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 /* Erase any pre-dump messages in the message log, to avoid confusion */
912 Lisp_Object old_log_max
;
913 old_log_max
= Vmessage_log_max
;
914 XSETFASTINT (Vmessage_log_max
, 0);
915 message_dolog ("", 0, 1);
916 Vmessage_log_max
= old_log_max
;
921 #if defined (sun) || defined (LOCALTIME_CACHE)
922 /* sun's localtime has a bug. it caches the value of the time
923 zone rather than looking it up every time. Since localtime() is
924 called to bolt the undumping time into the undumped emacs, this
925 results in localtime ignoring the TZ environment variable.
926 This flushes the new TZ value into localtime. */
928 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
930 /* Handle the GNU standard option --version. */
931 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
934 ver
= call0 (intern ("emacs-version"));
936 printf ("%s\n", XSTRING (ver
)->data
);
940 /* Enter editor command loop. This never returns. */
945 /* Sort the args so we can find the most important ones
946 at the beginning of argv. */
948 /* First, here's a table of all the standard options. */
958 struct standard_args standard_args
[] =
960 { "-nl", "--no-shared-memory", 100, 0 },
961 { "-map", "--map-data", 100, 0 },
962 { "-t", "--terminal", 90, 1 },
963 { "-d", "--display", 80, 1 },
964 { "-display", 0, 80, 1 },
965 { "-nw", "--no-windows", 70, 0 },
966 { "-batch", "--batch", 60, 0 },
967 { "-q", "--no-init-file", 50, 0 },
968 { "-no-init-file", 0, 50, 0 },
969 { "-no-site-file", "--no-site-file", 40, 0 },
970 { "-u", "--user", 30, 1 },
971 { "-user", 0, 30, 1 },
972 { "-debug-init", "--debug-init", 20, 0 },
973 { "-bg", "--background-color", 10, 1 },
974 { "-background", 0, 10, 1 },
975 { "-fg", "--foreground-color", 10, 1 },
976 { "-foreground", 0, 10, 1 },
977 { "-bd", "--border-color", 10, 1 },
978 { "-bw", "--border-width", 10, 1 },
979 { "-ib", "--internal-border", 10, 1 },
980 { "-ms", "--mouse-color", 10, 1 },
981 { "-cr", "--cursor-color", 10, 1 },
982 { "-fn", "--font", 10, 1 },
983 { "-font", 0, 10, 1 },
984 { "-g", "--geometry", 10, 1 },
985 { "-geometry", 0, 10, 1 },
986 { "-T", "--title", 10, 1 },
987 { "-i", "--icon-type", 10, 1 },
988 { "-itype", 0, 10, 1 },
989 { "-name", "--name", 10, 1 },
990 { "-xrm", "--xrm", 10, 1 },
991 { "-r", "--reverse-video", 5, 0 },
993 { "-reverse", 0, 5, 0 },
994 { "-vb", "--vertical-scroll-bars", 5, 0 },
995 { "-iconic", "--iconic", 5, 0 },
996 /* These have the same priority as ordinary file name args,
997 so they are not reordered with respect to those. */
998 { "-l", "--load", 0, 1 },
999 { "-load", 0, 0, 1 },
1000 { "-f", "--funcall", 0, 1 },
1001 { "-funcall", 0, 0, 1 },
1002 { "-insert", "--insert", 0, 1 },
1003 { "-kill", "--kill", -10, 0 },
1006 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1007 so that the highest priority ones come first.
1008 Do not change the order of elements of equal priority.
1009 If an option takes an argument, keep it and its argument together. */
1012 sort_args (argc
, argv
)
1016 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1017 /* For each element of argv,
1018 the corresponding element of options is:
1019 0 for an option that takes no arguments,
1020 1 for an option that takes one argument, etc.
1021 -1 for an ordinary non-option argument. */
1022 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1023 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1028 /* Categorize all the options,
1029 and figure out which argv elts are option arguments. */
1030 for (from
= 1; from
< argc
; from
++)
1034 if (argv
[from
][0] == '-')
1039 /* Look for a match with a known old-fashioned option. */
1040 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1041 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1043 options
[from
] = standard_args
[i
].nargs
;
1044 priority
[from
] = standard_args
[i
].priority
;
1045 from
+= standard_args
[i
].nargs
;
1049 /* Look for a match with a known long option.
1050 MATCH is -1 if no match so far, -2 if two or more matches so far,
1051 >= 0 (the table index of the match) if just one match so far. */
1052 if (argv
[from
][1] == '-')
1055 thislen
= strlen (argv
[from
]);
1056 equals
= index (argv
[from
], '=');
1058 thislen
= equals
- argv
[from
];
1061 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1062 if (standard_args
[i
].longname
1063 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1072 /* If we found exactly one match, use that. */
1075 options
[from
] = standard_args
[match
].nargs
;
1076 priority
[from
] = standard_args
[match
].priority
;
1077 /* If --OPTION=VALUE syntax is used,
1078 this option uses just one argv element. */
1081 from
+= options
[from
];
1088 /* Copy the arguments, in order of decreasing priority, to NEW. */
1093 int best_priority
= -2;
1095 /* Find the highest priority remaining option.
1096 If several have equal priority, take the first of them. */
1097 for (from
= 1; from
< argc
; from
++)
1099 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1101 best_priority
= priority
[from
];
1104 /* Skip option arguments--they are tied to the options. */
1105 if (options
[from
] > 0)
1106 from
+= options
[from
];
1112 /* Copy the highest priority remaining option, with its args, to NEW. */
1113 new[to
++] = argv
[best
];
1114 for (i
= 0; i
< options
[best
]; i
++)
1115 new[to
++] = argv
[best
+ i
+ 1];
1117 /* Clear out this option in ARGV. */
1119 for (i
= 0; i
< options
[best
]; i
++)
1120 argv
[best
+ i
+ 1] = 0;
1123 bcopy (new, argv
, sizeof (char *) * argc
);
1126 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1127 "Exit the Emacs job and kill it.\n\
1128 If ARG is an integer, return ARG as the exit program code.\n\
1129 If ARG is a string, stuff it as keyboard input.\n\n\
1130 The value of `kill-emacs-hook', if not void,\n\
1131 is a list of functions (of no args),\n\
1132 all of which are called before Emacs is actually killed.")
1136 Lisp_Object hook
, hook1
;
1138 struct gcpro gcpro1
;
1145 if (!NILP (Vrun_hooks
) && !noninteractive
)
1146 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1150 /* Is it really necessary to do this deassign
1151 when we are going to exit anyway? */
1156 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1158 exit (INTEGERP (arg
) ? XINT (arg
)
1169 /* Perform an orderly shutdown of Emacs. Autosave any modified
1170 buffers, kill any child processes, clean up the terminal modes (if
1171 we're in the foreground), and other stuff like that. Don't perform
1172 any redisplay; this may be called when Emacs is shutting down in
1173 the background, or after its X connection has died.
1175 If SIG is a signal number, print a message for it.
1177 This is called by fatal signal handlers, X protocol error handlers,
1181 shut_down_emacs (sig
, no_x
, stuff
)
1185 /* Prevent running of hooks from now on. */
1188 /* If we are controlling the terminal, reset terminal modes */
1189 #ifdef EMACS_HAVE_TTY_PGRP
1191 int pgrp
= EMACS_GETPGRP (0);
1194 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1199 if (sig
&& sig
!= SIGTERM
)
1200 fprintf (stderr
, "Fatal error (%d).", sig
);
1208 stuff_buffered_input (stuff
);
1210 kill_buffer_processes (Qnil
);
1211 Fdo_auto_save (Qt
, Qnil
);
1213 #ifdef CLASH_DETECTION
1214 unlock_all_files ();
1218 kill_vms_processes ();
1221 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1222 #ifdef HAVE_X_WINDOWS
1223 /* It's not safe to call intern here. Maybe we are crashing. */
1224 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1225 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1226 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1228 Fx_close_current_connection ();
1229 #endif /* HAVE_X_WINDOWS */
1233 /* There is a tendency for a SIGIO signal to arrive within exit,
1234 and cause a SIGHUP because the input descriptor is already closed. */
1236 signal (SIGIO
, SIG_IGN
);
1243 /* Nothing like this can be implemented on an Apollo.
1248 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1249 "Dump current state of Emacs into data file FILENAME.\n\
1250 This function exists on systems that use HAVE_SHM.")
1252 Lisp_Object intoname
;
1254 extern char my_edata
[];
1257 CHECK_STRING (intoname
, 0);
1258 intoname
= Fexpand_file_name (intoname
, Qnil
);
1261 Vpurify_flag
= Qnil
;
1264 /* Tell malloc where start of impure now is */
1265 /* Also arrange for warnings when nearly out of space. */
1266 #ifndef SYSTEM_MALLOC
1267 memory_warnings (&my_edata
, malloc_warning
);
1269 map_out_data (XSTRING (intoname
)->data
);
1276 #else /* not HAVE_SHM */
1278 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1279 "Dump current state of Emacs into executable file FILENAME.\n\
1280 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1281 This is used in the file `loadup.el' when building Emacs.\n\
1283 Bind `command-line-processed' to nil before dumping,\n\
1284 if you want the dumped Emacs to process its command line\n\
1285 and announce itself normally when it is run.")
1287 Lisp_Object intoname
, symname
;
1289 extern char my_edata
[];
1292 CHECK_STRING (intoname
, 0);
1293 intoname
= Fexpand_file_name (intoname
, Qnil
);
1294 if (!NILP (symname
))
1296 CHECK_STRING (symname
, 0);
1297 if (XSTRING (symname
)->size
)
1298 symname
= Fexpand_file_name (symname
, Qnil
);
1302 Vpurify_flag
= Qnil
;
1306 mapout_data (XSTRING (intoname
)->data
);
1308 /* Tell malloc where start of impure now is */
1309 /* Also arrange for warnings when nearly out of space. */
1310 #ifndef SYSTEM_MALLOC
1312 /* On Windows, this was done before dumping, and that once suffices.
1313 Meanwhile, my_edata is not valid on Windows. */
1314 memory_warnings (&my_edata
, malloc_warning
);
1315 #endif /* not WINDOWSNT */
1317 unexec (XSTRING (intoname
)->data
,
1318 !NILP (symname
) ? XSTRING (symname
)->data
: 0, &my_edata
, 0, 0);
1319 #endif /* not VMS */
1326 #endif /* not HAVE_SHM */
1328 #endif /* not CANNOT_DUMP */
1335 decode_env_path (evarname
, defalt
)
1336 char *evarname
, *defalt
;
1338 register char *path
, *p
;
1342 /* It's okay to use getenv here, because this function is only used
1343 to initialize variables when Emacs starts up, and isn't called
1346 path
= (char *) getenv (evarname
);
1354 p
= index (path
, SEPCHAR
);
1355 if (!p
) p
= path
+ strlen (path
);
1356 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1363 return Fnreverse (lpath
);
1370 defsubr (&Sdump_emacs_data
);
1372 defsubr (&Sdump_emacs
);
1376 defsubr (&Skill_emacs
);
1378 defsubr (&Sinvocation_name
);
1379 defsubr (&Sinvocation_directory
);
1381 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1382 "Args passed by shell to Emacs, as a list of strings.");
1384 DEFVAR_LISP ("system-type", &Vsystem_type
,
1385 "Value is symbol indicating type of operating system you are using.");
1386 Vsystem_type
= intern (SYSTEM_TYPE
);
1388 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1389 "Value is string indicating configuration Emacs was built for.");
1390 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1392 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1393 "String containing the configuration options Emacs was built with.");
1394 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1396 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1397 "Non-nil means Emacs is running without interactive terminal.");
1399 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1400 "Hook to be run whenever kill-emacs is called.\n\
1401 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1402 in other similar situations), functions placed on this hook should not\n\
1403 expect to be able to interact with the user. To ask for confirmation,\n\
1404 see `kill-emacs-query-functions' instead.");
1405 Vkill_emacs_hook
= Qnil
;
1407 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1408 "Priority for Emacs to run at.\n\
1409 This value is effective only if set before Emacs is dumped,\n\
1410 and only if the Emacs executable is installed with setuid to permit\n\
1411 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1412 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1413 before you compile Emacs, to enable the code for this feature.");
1416 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1417 "The program name that was used to run Emacs.\n\
1418 Any directory names are omitted.");
1420 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1421 "The directory in which the Emacs executable was found, to run it.\n\
1422 The value is nil if that directory's name is not known.");
1424 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1425 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1426 This is non-nil when we can't find those directories in their standard\n\
1427 installed locations, but we can find them\n\
1428 near where the Emacs executable was found.");
1429 Vinstallation_directory
= Qnil
;