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 char *index ();
52 extern char *strerror ();
54 /* Command line args from shell, as list of strings */
55 Lisp_Object Vcommand_line_args
;
57 /* The name under which Emacs was invoked, with any leading directory
59 Lisp_Object Vinvocation_name
;
61 /* The directory name from which Emacs was invoked. */
62 Lisp_Object Vinvocation_directory
;
64 /* The directory name in which to find subdirs such as lisp and etc.
65 nil means get them only from PATH_LOADSEARCH. */
66 Lisp_Object Vinstallation_directory
;
68 /* Hook run by `kill-emacs' before it does really anything. */
69 Lisp_Object Vkill_emacs_hook
;
71 /* Set nonzero after Emacs has started up the first time.
72 Prevents reinitialization of the Lisp world and keymaps
73 on subsequent starts. */
76 /* Variable whose value is symbol giving operating system type. */
77 Lisp_Object Vsystem_type
;
79 /* Variable whose value is string giving configuration built for. */
80 Lisp_Object Vsystem_configuration
;
82 /* Variable whose value is string giving configuration options,
83 for use when reporting bugs. */
84 Lisp_Object Vsystem_configuration_options
;
86 /* If non-zero, emacs should not attempt to use an window-specific code,
87 but instead should use the virtual terminal under which it was started */
88 int inhibit_window_system
;
90 /* If nonzero, set Emacs to run at this priority. This is also used
91 in child_setup and sys_suspend to make sure subshells run at normal
92 priority; Those functions have their own extern declaration. */
95 /* If non-zero a filter or a sentinel is running. Tested to save the match
96 data on the first attempt to change it inside asynchronous code. */
97 int running_asynch_code
;
101 extern int inherited_pgroup
;
104 #ifdef HAVE_X_WINDOWS
105 /* If non-zero, -d was specified, meaning we're using some window system. */
109 /* An address near the bottom of the stack.
110 Tells GC how to save a copy of the stack. */
113 #ifdef HAVE_X_WINDOWS
114 extern Lisp_Object Vwindow_system
;
115 #endif /* HAVE_X_WINDOWS */
117 extern Lisp_Object Vauto_save_list_file_name
;
119 #ifdef USG_SHARED_LIBRARIES
120 /* If nonzero, this is the place to put the end of the writable segment
123 unsigned int bss_end
= 0;
126 /* Nonzero means running Emacs without interactive terminal. */
130 /* Value of Lisp variable `noninteractive'.
131 Normally same as C variable `noninteractive'
132 but nothing terrible happens if user sets this one. */
136 /* Save argv and argc. */
140 static void sort_args ();
142 /* Signal code for the fatal signal that was received */
143 int fatal_error_code
;
145 /* Nonzero if handling a fatal error already */
146 int fatal_error_in_progress
;
148 /* Handle bus errors, illegal instruction, etc. */
150 fatal_error_signal (sig
)
153 fatal_error_code
= sig
;
154 signal (sig
, SIG_DFL
);
156 /* If fatal error occurs in code below, avoid infinite recursion. */
157 if (! fatal_error_in_progress
)
159 fatal_error_in_progress
= 1;
161 shut_down_emacs (sig
, 0, Qnil
);
165 LIB$
STOP (SS$_ABORT
);
167 /* Signal the same code; this time it will really be fatal.
168 Remember that since we're in a signal handler, the signal we're
169 going to send is probably blocked, so we have to unblock it if we
170 want to really receive it. */
172 sigunblock (sigmask (fatal_error_code
));
174 kill (getpid (), fatal_error_code
);
180 /* Handler for SIGDANGER. */
182 memory_warning_signal (sig
)
185 signal (sig
, memory_warning_signal
);
187 malloc_warning ("Operating system warns that virtual memory is running low.\n");
189 /* It might be unsafe to call do_auto_save now. */
190 force_auto_save_soon ();
194 /* Code for dealing with Lisp access to the Unix command line */
197 init_cmdargs (argc
, argv
, skip_args
)
203 Lisp_Object name
, dir
;
208 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
209 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
210 /* If we got no directory in argv[0], search PATH to find where
211 Emacs actually came from. */
212 if (NILP (Vinvocation_directory
))
215 int yes
= openp (Vexec_path
, Vinvocation_name
,
216 EXEC_SUFFIXES
, &found
, 1);
218 Vinvocation_directory
= Ffile_name_directory (found
);
221 Vinstallation_directory
= Qnil
;
223 if (!NILP (Vinvocation_directory
))
225 dir
= Vinvocation_directory
;
226 name
= Fexpand_file_name (Vinvocation_name
, dir
);
229 Lisp_Object tem
, lib_src_exists
;
230 Lisp_Object etc_exists
, info_exists
;
232 /* See if dir contains subdirs for use by Emacs.
233 Check for the ones that would exist in a build directory,
234 not including lisp and info. */
235 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
236 lib_src_exists
= Ffile_exists_p (tem
);
237 if (!NILP (lib_src_exists
))
239 tem
= Fexpand_file_name (build_string ("etc"), dir
);
240 etc_exists
= Ffile_exists_p (tem
);
241 if (!NILP (etc_exists
))
243 Vinstallation_directory
244 = Ffile_name_as_directory (dir
);
249 /* See if dir's parent contains those subdirs. */
250 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
251 lib_src_exists
= Ffile_exists_p (tem
);
252 if (!NILP (lib_src_exists
))
254 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
255 etc_exists
= Ffile_exists_p (tem
);
256 if (!NILP (etc_exists
))
258 tem
= Fexpand_file_name (build_string (".."), dir
);
259 Vinstallation_directory
260 = Ffile_name_as_directory (tem
);
265 /* If the Emacs executable is actually a link,
266 next try the dir that the link points into. */
267 tem
= Ffile_symlink_p (name
);
270 name
= Fexpand_file_name (tem
, dir
);
271 dir
= Ffile_name_directory (name
);
278 Vcommand_line_args
= Qnil
;
280 for (i
= argc
- 1; i
>= 0; i
--)
282 if (i
== 0 || i
> skip_args
)
284 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
288 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
289 "Return the program name that was used to run Emacs.\n\
290 Any directory names are omitted.")
293 return Fcopy_sequence (Vinvocation_name
);
296 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
298 "Return the directory name in which the Emacs executable was located")
301 return Fcopy_sequence (Vinvocation_directory
);
306 #ifdef LINK_CRTL_SHARE
307 #ifdef SHAREABLE_LIB_BUG
308 extern noshare
char **environ
;
309 #endif /* SHAREABLE_LIB_BUG */
310 #endif /* LINK_CRTL_SHARE */
313 #ifndef ORDINARY_LINK
314 /* We don't include crtbegin.o and crtend.o in the link,
315 so these functions and variables might be missed.
316 Provide dummy definitions to avoid error.
317 (We don't have any real constructors or destructors.) */
319 #ifndef GCC_CTORS_IN_LIBC
322 __do_global_ctors_aux ()
326 /* Linux has a bug in its library; avoid an error. */
328 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
330 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
331 #endif /* GCC_CTORS_IN_LIBC */
334 #endif /* __GNUC__ */
335 #endif /* ORDINARY_LINK */
337 /* Test whether the next argument in ARGV matches SSTR or a prefix of
338 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
339 (the argument is supposed to have a value) store in *VALPTR either
340 the next argument or the portion of this one after the equal sign.
341 ARGV is read starting at position *SKIPPTR; this index is advanced
342 by the number of arguments used.
344 Too bad we can't just use getopt for all of this, but we don't have
345 enough information to do it right. */
348 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
361 /* Don't access argv[argc]; give up in advance. */
362 if (argc
<= *skipptr
+ 1)
365 arg
= argv
[*skipptr
+1];
368 if (strcmp (arg
, sstr
) == 0)
372 *valptr
= argv
[*skipptr
+2];
379 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
380 ? p
- arg
: strlen (arg
));
381 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
383 else if (valptr
== NULL
)
394 else if (argv
[*skipptr
+2] != NULL
)
396 *valptr
= argv
[*skipptr
+2];
407 main (argc
, argv
, envp
)
412 char stack_bottom_variable
;
417 sort_args (argc
, argv
);
419 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
422 tem
= Fsymbol_value (intern ("emacs-version"));
425 fprintf (stderr
, "Invalid value of `emacs-version'\n");
430 printf ("%s\n", XSTRING (tem
)->data
);
435 /* Map in shared memory, if we are using that. */
437 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
440 /* The shared memory was just restored, which clobbered this. */
446 /* The shared memory was just restored, which clobbered this. */
453 extern int malloc_cookie
;
454 /* This helps out unexnext.c. */
456 if (malloc_jumpstart (malloc_cookie
) != 0)
457 printf ("malloc jumpstart failed!\n");
462 /* If -map specified, map the data file in */
465 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
469 #ifdef LINK_CRTL_SHARE
470 #ifdef SHAREABLE_LIB_BUG
471 /* Bletcherous shared libraries! */
473 stdin
= fdopen (0, "r");
475 stdout
= fdopen (1, "w");
477 stderr
= fdopen (2, "w");
480 #endif /* SHAREABLE_LIB_BUG */
481 #endif /* LINK_CRTL_SHARE */
484 /* Record (approximately) where the stack begins. */
485 stack_bottom
= &stack_bottom_variable
;
487 #ifdef RUN_TIME_REMAP
489 run_time_remap (argv
[0]);
492 #ifdef USG_SHARED_LIBRARIES
494 brk ((void *)bss_end
);
499 #ifndef SYSTEM_MALLOC
502 /* Arrange to get warning messages as memory fills up. */
503 memory_warnings (0, malloc_warning
);
505 /* Arrange to disable interrupt input while malloc and friends are
507 uninterrupt_malloc ();
509 #endif /* not SYSTEM_MALLOC */
512 /* We do all file input/output as binary files. When we need to translate
513 newlines, we do that manually. */
515 (stdin
)->_flag
&= ~_IOTEXT
;
516 (stdout
)->_flag
&= ~_IOTEXT
;
517 (stderr
)->_flag
&= ~_IOTEXT
;
520 #ifdef SET_EMACS_PRIORITY
522 nice (emacs_priority
);
524 #endif /* SET_EMACS_PRIORITY */
526 #ifdef EXTRA_INITIALIZE
530 inhibit_window_system
= 0;
532 /* Handle the -t switch, which specifies filename to use as terminal */
535 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
540 result
= open (term
, O_RDWR
, 2 );
543 char *errstring
= strerror (errno
);
544 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
550 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
553 fprintf (stderr
, "Using %s\n", term
);
554 #ifdef HAVE_X_WINDOWS
555 inhibit_window_system
= 1; /* -t => -nw */
559 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
560 inhibit_window_system
= 1;
562 /* Handle the -batch switch, which means don't do interactive display. */
564 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
567 /* Handle the --help option, which gives a usage message.. */
568 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
571 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
572 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
573 \(Arguments above this line must be first; those below may be in any order)\n\
574 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
575 file-to-visit [--kill]\n", argv
[0]);
579 #ifdef HAVE_X_WINDOWS
580 /* Stupid kludge to catch command-line display spec. We can't
581 handle this argument entirely in window system dependent code
582 because we don't even know which window system dependent code
583 to run until we've recognized this argument. */
587 int count_before
= skip_args
;
589 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
591 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
594 /* If we have the form --display=NAME,
595 convert it into -d name.
596 This requires inserting a new element into argv. */
597 if (displayname
!= 0 && skip_args
- count_before
== 1)
599 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
602 for (j
= 0; j
< count_before
+ 1; j
++)
604 new[count_before
+ 1] = "-d";
605 new[count_before
+ 2] = displayname
;
606 for (j
= count_before
+ 2; j
<argc
; j
++)
607 new[j
+ 1] = argv
[j
];
611 /* Change --display to -d, when its arg is separate. */
612 else if (displayname
!= 0 && skip_args
> count_before
613 && argv
[count_before
+ 1][1] == '-')
614 argv
[count_before
] = "-d";
616 /* Don't actually discard this arg. */
617 skip_args
= count_before
;
621 if (! noninteractive
)
626 inherited_pgroup
= EMACS_GETPGRP (0);
627 setpgrp (0, getpid ());
630 #if defined (USG5) && defined (INTERRUPT_INPUT)
642 ! noninteractive
|| initialized
648 /* Don't catch these signals in batch mode if not initialized.
649 On some machines, this sets static data that would make
650 signal fail to work right when the dumped Emacs is run. */
651 signal (SIGHUP
, fatal_error_signal
);
652 signal (SIGQUIT
, fatal_error_signal
);
653 signal (SIGILL
, fatal_error_signal
);
654 signal (SIGTRAP
, fatal_error_signal
);
656 signal (SIGABRT
, fatal_error_signal
);
659 signal (SIGHWE
, fatal_error_signal
);
662 signal (SIGPRE
, fatal_error_signal
);
665 signal (SIGORE
, fatal_error_signal
);
668 signal (SIGUME
, fatal_error_signal
);
671 signal (SIGDLK
, fatal_error_signal
);
674 signal (SIGCPULIM
, fatal_error_signal
);
677 /* This is missing on some systems - OS/2, for example. */
678 signal (SIGIOT
, fatal_error_signal
);
681 signal (SIGEMT
, fatal_error_signal
);
683 signal (SIGFPE
, fatal_error_signal
);
685 signal (SIGBUS
, fatal_error_signal
);
687 signal (SIGSEGV
, fatal_error_signal
);
689 signal (SIGSYS
, fatal_error_signal
);
691 signal (SIGTERM
, fatal_error_signal
);
693 signal (SIGXCPU
, fatal_error_signal
);
696 signal (SIGXFSZ
, fatal_error_signal
);
700 /* This just means available memory is getting low. */
701 signal (SIGDANGER
, memory_warning_signal
);
705 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
706 signal (SIGXCPU
, fatal_error_signal
);
708 signal (SIGIOINT
, fatal_error_signal
);
710 signal (SIGGRANT
, fatal_error_signal
);
711 signal (SIGRETRACT
, fatal_error_signal
);
712 signal (SIGSOUND
, fatal_error_signal
);
713 signal (SIGMSG
, fatal_error_signal
);
717 noninteractive1
= noninteractive
;
719 /* Perform basic initializations (not merely interning symbols) */
726 init_syntax_once (); /* Create standard syntax table. */
727 /* Must be done before init_buffer */
728 init_casetab_once ();
729 init_buffer_once (); /* Create buffer table and some buffers */
730 init_minibuf_once (); /* Create list of minibuffers */
731 /* Must precede init_window_once */
732 init_window_once (); /* Init the window system */
738 running_asynch_code
= 0;
741 /* Call early 'cause init_environment needs it. */
743 /* Set defaults for several environment variables. */
744 if (initialized
) init_environment (argc
, argv
, skip_args
);
747 /* egetenv is a pretty low-level facility, which may get called in
748 many circumstances; it seems flimsy to put off initializing it
749 until calling init_callproc. */
750 set_process_environment ();
751 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
752 if this is not done. Do it after set_process_environment so that we
753 don't pollute Vprocess_environment. */
758 init_buffer (); /* Init default directory of main buffer */
760 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
761 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
762 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
768 init_vms_input ();/* init_display calls get_frame_size, that needs this */
770 init_display (); /* Determine terminal type. init_sys_modes uses results */
772 init_keyboard (); /* This too must precede init_sys_modes */
774 init_vmsproc (); /* And this too. */
776 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
780 #ifdef LISP_FLOAT_TYPE
787 #ifdef CLASH_DETECTION
789 #endif /* CLASH_DETECTION */
791 /* Intern the names of all standard functions and variables; define standard keys */
795 /* The basic levels of Lisp must come first */
796 /* And data must come first of all
797 for the sake of symbols like error-message */
810 syms_of_casefiddle ();
814 #ifndef NO_DIR_LIBRARY
816 #endif /* not NO_DIR_LIBRARY */
822 #ifdef CLASH_DETECTION
824 #endif /* CLASH_DETECTION */
839 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
846 #ifdef HAVE_X_WINDOWS
855 #endif /* HAVE_X_MENU */
856 #endif /* HAVE_X_WINDOWS */
858 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
871 keys_of_casefiddle ();
885 /* Handle -l loadup-and-dump, args passed by Makefile. */
886 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
887 Vtop_level
= Fcons (intern ("load"),
888 Fcons (build_string (file
), Qnil
));
890 /* Unless next switch is -nl, load "loadup.el" first thing. */
891 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
892 Vtop_level
= Fcons (intern ("load"),
893 Fcons (build_string ("loadup.el"), Qnil
));
894 #endif /* CANNOT_DUMP */
899 /* Erase any pre-dump messages in the message log, to avoid confusion */
900 Lisp_Object old_log_max
;
901 old_log_max
= Vmessage_log_max
;
902 XSETFASTINT (Vmessage_log_max
, 0);
903 message_dolog ("", 0, 1);
904 Vmessage_log_max
= old_log_max
;
909 #if defined (sun) || defined (LOCALTIME_CACHE)
910 /* sun's localtime has a bug. it caches the value of the time
911 zone rather than looking it up every time. Since localtime() is
912 called to bolt the undumping time into the undumped emacs, this
913 results in localtime ignoring the TZ environment variable.
914 This flushes the new TZ value into localtime. */
916 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
918 /* Enter editor command loop. This never returns. */
923 /* Sort the args so we can find the most important ones
924 at the beginning of argv. */
926 /* First, here's a table of all the standard options. */
936 struct standard_args standard_args
[] =
938 { "-version", "--version", 110, 0 },
939 { "-help", "--help", 110, 0 },
940 { "-nl", "--no-shared-memory", 100, 0 },
942 { "-map", "--map-data", 100, 0 },
944 { "-t", "--terminal", 90, 1 },
945 { "-d", "--display", 80, 1 },
946 { "-display", 0, 80, 1 },
947 { "-nw", "--no-windows", 70, 0 },
948 { "-batch", "--batch", 60, 0 },
949 { "-q", "--no-init-file", 50, 0 },
950 { "-no-init-file", 0, 50, 0 },
951 { "-no-site-file", "--no-site-file", 40, 0 },
952 { "-u", "--user", 30, 1 },
953 { "-user", 0, 30, 1 },
954 { "-debug-init", "--debug-init", 20, 0 },
955 { "-i", "--icon-type", 15, 0 },
956 { "-itype", 0, 15, 0 },
957 { "-iconic", "--iconic", 15, 0 },
958 { "-bg", "--background-color", 10, 1 },
959 { "-background", 0, 10, 1 },
960 { "-fg", "--foreground-color", 10, 1 },
961 { "-foreground", 0, 10, 1 },
962 { "-bd", "--border-color", 10, 1 },
963 { "-bw", "--border-width", 10, 1 },
964 { "-ib", "--internal-border", 10, 1 },
965 { "-ms", "--mouse-color", 10, 1 },
966 { "-cr", "--cursor-color", 10, 1 },
967 { "-fn", "--font", 10, 1 },
968 { "-font", 0, 10, 1 },
969 { "-g", "--geometry", 10, 1 },
970 { "-geometry", 0, 10, 1 },
971 { "-T", "--title", 10, 1 },
972 { "-name", "--name", 10, 1 },
973 { "-xrm", "--xrm", 10, 1 },
974 { "-r", "--reverse-video", 5, 0 },
976 { "-reverse", 0, 5, 0 },
977 { "-vb", "--vertical-scroll-bars", 5, 0 },
978 /* These have the same priority as ordinary file name args,
979 so they are not reordered with respect to those. */
980 { "-L", "--directory", 0, 1 },
981 { "-directory", 0, 0, 1 },
982 { "-l", "--load", 0, 1 },
983 { "-load", 0, 0, 1 },
984 { "-f", "--funcall", 0, 1 },
985 { "-funcall", 0, 0, 1 },
986 { "-insert", "--insert", 0, 1 },
987 /* This should be processed after ordinary file name args and the like. */
988 { "-kill", "--kill", -10, 0 },
991 /* Reorder the elements of ARGV (assumed to have ARGC elements)
992 so that the highest priority ones come first.
993 Do not change the order of elements of equal priority.
994 If an option takes an argument, keep it and its argument together. */
997 sort_args (argc
, argv
)
1001 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1002 /* For each element of argv,
1003 the corresponding element of options is:
1004 0 for an option that takes no arguments,
1005 1 for an option that takes one argument, etc.
1006 -1 for an ordinary non-option argument. */
1007 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1008 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1013 /* Categorize all the options,
1014 and figure out which argv elts are option arguments. */
1015 for (from
= 1; from
< argc
; from
++)
1019 if (argv
[from
][0] == '-')
1024 /* Look for a match with a known old-fashioned option. */
1025 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1026 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1028 options
[from
] = standard_args
[i
].nargs
;
1029 priority
[from
] = standard_args
[i
].priority
;
1030 from
+= standard_args
[i
].nargs
;
1034 /* Look for a match with a known long option.
1035 MATCH is -1 if no match so far, -2 if two or more matches so far,
1036 >= 0 (the table index of the match) if just one match so far. */
1037 if (argv
[from
][1] == '-')
1040 thislen
= strlen (argv
[from
]);
1041 equals
= index (argv
[from
], '=');
1043 thislen
= equals
- argv
[from
];
1046 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1047 if (standard_args
[i
].longname
1048 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1057 /* If we found exactly one match, use that. */
1060 options
[from
] = standard_args
[match
].nargs
;
1061 priority
[from
] = standard_args
[match
].priority
;
1062 /* If --OPTION=VALUE syntax is used,
1063 this option uses just one argv element. */
1066 from
+= options
[from
];
1073 /* Copy the arguments, in order of decreasing priority, to NEW. */
1078 int best_priority
= -2;
1080 /* Find the highest priority remaining option.
1081 If several have equal priority, take the first of them. */
1082 for (from
= 1; from
< argc
; from
++)
1084 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1086 best_priority
= priority
[from
];
1089 /* Skip option arguments--they are tied to the options. */
1090 if (options
[from
] > 0)
1091 from
+= options
[from
];
1097 /* Copy the highest priority remaining option, with its args, to NEW. */
1098 new[to
++] = argv
[best
];
1099 for (i
= 0; i
< options
[best
]; i
++)
1100 new[to
++] = argv
[best
+ i
+ 1];
1102 /* Clear out this option in ARGV. */
1104 for (i
= 0; i
< options
[best
]; i
++)
1105 argv
[best
+ i
+ 1] = 0;
1108 bcopy (new, argv
, sizeof (char *) * argc
);
1111 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1112 "Exit the Emacs job and kill it.\n\
1113 If ARG is an integer, return ARG as the exit program code.\n\
1114 If ARG is a string, stuff it as keyboard input.\n\n\
1115 The value of `kill-emacs-hook', if not void,\n\
1116 is a list of functions (of no args),\n\
1117 all of which are called before Emacs is actually killed.")
1121 Lisp_Object hook
, hook1
;
1123 struct gcpro gcpro1
;
1130 if (!NILP (Vrun_hooks
) && !noninteractive
)
1131 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1135 /* Is it really necessary to do this deassign
1136 when we are going to exit anyway? */
1141 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1143 /* If we have an auto-save list file,
1144 kill it because we are exiting Emacs deliberately (not crashing).
1145 Do it after shut_down_emacs, which does an auto-save. */
1146 if (STRINGP (Vauto_save_list_file_name
))
1147 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1149 exit (INTEGERP (arg
) ? XINT (arg
)
1160 /* Perform an orderly shutdown of Emacs. Autosave any modified
1161 buffers, kill any child processes, clean up the terminal modes (if
1162 we're in the foreground), and other stuff like that. Don't perform
1163 any redisplay; this may be called when Emacs is shutting down in
1164 the background, or after its X connection has died.
1166 If SIG is a signal number, print a message for it.
1168 This is called by fatal signal handlers, X protocol error handlers,
1172 shut_down_emacs (sig
, no_x
, stuff
)
1176 /* Prevent running of hooks from now on. */
1179 /* If we are controlling the terminal, reset terminal modes */
1180 #ifdef EMACS_HAVE_TTY_PGRP
1182 int pgrp
= EMACS_GETPGRP (0);
1185 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1190 if (sig
&& sig
!= SIGTERM
)
1191 fprintf (stderr
, "Fatal error (%d).", sig
);
1199 stuff_buffered_input (stuff
);
1201 kill_buffer_processes (Qnil
);
1202 Fdo_auto_save (Qt
, Qnil
);
1204 #ifdef CLASH_DETECTION
1205 unlock_all_files ();
1209 kill_vms_processes ();
1212 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1213 #ifdef HAVE_X_WINDOWS
1214 /* It's not safe to call intern here. Maybe we are crashing. */
1215 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1216 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1217 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1219 Fx_close_current_connection ();
1220 #endif /* HAVE_X_WINDOWS */
1224 /* There is a tendency for a SIGIO signal to arrive within exit,
1225 and cause a SIGHUP because the input descriptor is already closed. */
1227 signal (SIGIO
, SIG_IGN
);
1237 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1238 "Dump current state of Emacs into data file FILENAME.\n\
1239 This function exists on systems that use HAVE_SHM.")
1241 Lisp_Object intoname
;
1243 extern char my_edata
[];
1246 CHECK_STRING (intoname
, 0);
1247 intoname
= Fexpand_file_name (intoname
, Qnil
);
1250 Vpurify_flag
= Qnil
;
1253 /* Tell malloc where start of impure now is */
1254 /* Also arrange for warnings when nearly out of space. */
1255 #ifndef SYSTEM_MALLOC
1256 memory_warnings (my_edata
, malloc_warning
);
1258 map_out_data (XSTRING (intoname
)->data
);
1265 #else /* not HAVE_SHM */
1267 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1268 "Dump current state of Emacs into executable file FILENAME.\n\
1269 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1270 This is used in the file `loadup.el' when building Emacs.\n\
1272 Bind `command-line-processed' to nil before dumping,\n\
1273 if you want the dumped Emacs to process its command line\n\
1274 and announce itself normally when it is run.")
1276 Lisp_Object intoname
, symname
;
1278 extern char my_edata
[];
1281 CHECK_STRING (intoname
, 0);
1282 intoname
= Fexpand_file_name (intoname
, Qnil
);
1283 if (!NILP (symname
))
1285 CHECK_STRING (symname
, 0);
1286 if (XSTRING (symname
)->size
)
1287 symname
= Fexpand_file_name (symname
, Qnil
);
1291 Vpurify_flag
= Qnil
;
1295 mapout_data (XSTRING (intoname
)->data
);
1297 /* Tell malloc where start of impure now is */
1298 /* Also arrange for warnings when nearly out of space. */
1299 #ifndef SYSTEM_MALLOC
1301 /* On Windows, this was done before dumping, and that once suffices.
1302 Meanwhile, my_edata is not valid on Windows. */
1303 memory_warnings (my_edata
, malloc_warning
);
1304 #endif /* not WINDOWSNT */
1306 unexec (XSTRING (intoname
)->data
,
1307 !NILP (symname
) ? XSTRING (symname
)->data
: 0, my_edata
, 0, 0);
1308 #endif /* not VMS */
1315 #endif /* not HAVE_SHM */
1317 #endif /* not CANNOT_DUMP */
1324 decode_env_path (evarname
, defalt
)
1325 char *evarname
, *defalt
;
1327 register char *path
, *p
;
1331 /* It's okay to use getenv here, because this function is only used
1332 to initialize variables when Emacs starts up, and isn't called
1335 path
= (char *) getenv (evarname
);
1343 p
= index (path
, SEPCHAR
);
1344 if (!p
) p
= path
+ strlen (path
);
1345 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1352 return Fnreverse (lpath
);
1359 defsubr (&Sdump_emacs_data
);
1361 defsubr (&Sdump_emacs
);
1365 defsubr (&Skill_emacs
);
1367 defsubr (&Sinvocation_name
);
1368 defsubr (&Sinvocation_directory
);
1370 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1371 "Args passed by shell to Emacs, as a list of strings.");
1373 DEFVAR_LISP ("system-type", &Vsystem_type
,
1374 "Value is symbol indicating type of operating system you are using.");
1375 Vsystem_type
= intern (SYSTEM_TYPE
);
1377 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1378 "Value is string indicating configuration Emacs was built for.");
1379 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1381 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1382 "String containing the configuration options Emacs was built with.");
1383 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1385 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1386 "Non-nil means Emacs is running without interactive terminal.");
1388 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1389 "Hook to be run whenever kill-emacs is called.\n\
1390 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1391 in other similar situations), functions placed on this hook should not\n\
1392 expect to be able to interact with the user. To ask for confirmation,\n\
1393 see `kill-emacs-query-functions' instead.");
1394 Vkill_emacs_hook
= Qnil
;
1396 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1397 "Priority for Emacs to run at.\n\
1398 This value is effective only if set before Emacs is dumped,\n\
1399 and only if the Emacs executable is installed with setuid to permit\n\
1400 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1401 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1402 before you compile Emacs, to enable the code for this feature.");
1405 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1406 "The program name that was used to run Emacs.\n\
1407 Any directory names are omitted.");
1409 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1410 "The directory in which the Emacs executable was found, to run it.\n\
1411 The value is nil if that directory's name is not known.");
1413 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1414 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1415 This is non-nil when we can't find those directories in their standard\n\
1416 installed locations, but we can find them\n\
1417 near where the Emacs executable was found.");
1418 Vinstallation_directory
= Qnil
;