/* Fully extensible Emacs, running on Unix, intended for GNU.
- Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
+ Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "lisp.h"
#include "commands.h"
#include "intervals.h"
+#include "buffer.h"
#include "systty.h"
#include "blockinput.h"
#include "syssignal.h"
#include "process.h"
+#include "termhooks.h"
+#include "keyboard.h"
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
#endif
#endif
+/* Search path separator. */
+Lisp_Object Vpath_separator;
+
/* Set nonzero after Emacs has started up the first time.
Prevents reinitialization of the Lisp world and keymaps
on subsequent starts. */
extern void *malloc_get_state ();
/* From glibc, a routine that overwrites the malloc internal state. */
extern void malloc_set_state ();
+/* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
+ dumping. Used to work around a bug in glibc's malloc. */
+int malloc_using_checking;
#endif
/* Variable whose value is symbol giving operating system type. */
int initial_argc;
static void sort_args ();
+void syms_of_emacs ();
\f
/* Signal code for the fatal signal that was received */
int fatal_error_code;
int fatal_error_in_progress;
#ifdef SIGUSR1
-int SIGUSR1_in_progress=0;
SIGTYPE
handle_USR1_signal (sig)
int sig;
{
- if (! SIGUSR1_in_progress)
- {
- SIGUSR1_in_progress = 1;
-
- if (!NILP (Vrun_hooks) && !noninteractive)
- call1 (Vrun_hooks, intern ("signal-USR1-hook"));
-
- SIGUSR1_in_progress = 0;
- }
+ struct input_event buf;
+
+ buf.kind = user_signal;
+ buf.code = 0;
+ buf.frame_or_window = Fselected_frame ();
+ buf.modifiers = 0;
+ buf.timestamp = 0;
+
+ kbd_buffer_store_event (&buf);
}
+#endif /* SIGUSR1 */
#ifdef SIGUSR2
-int SIGUSR2_in_progress=0;
SIGTYPE
handle_USR2_signal (sig)
int sig;
{
- if (! SIGUSR2_in_progress)
- {
- SIGUSR2_in_progress = 1;
-
- if (!NILP (Vrun_hooks) && !noninteractive)
- call1 (Vrun_hooks, intern ("signal-USR2-hook"));
-
- SIGUSR2_in_progress = 0;
- }
+ struct input_event buf;
+
+ buf.kind = user_signal;
+ buf.code = 1;
+ buf.frame_or_window = Fselected_frame ();
+ buf.modifiers = 0;
+ buf.timestamp = 0;
+
+ kbd_buffer_store_event (&buf);
}
-#endif
-#endif
+#endif /* SIGUSR2 */
/* Handle bus errors, illegal instruction, etc. */
SIGTYPE
#endif
/* We define abort, rather than using it from the library,
- so that GDB can return from a breakpoint here. */
+ so that GDB can return from a breakpoint here.
+ MSDOS has its own definition on msdos.c */
+#if ! defined (DOS_NT) && ! defined (NO_ABORT)
void
abort ()
{
kill (getpid (), SIGABRT);
+ /* This shouldn't be executed, but it prevents a warning. */
+ exit (1);
}
+#endif
\f
/* Code for dealing with Lisp access to the Unix command line */
-static
+static void
init_cmdargs (argc, argv, skip_args)
int argc;
char **argv;
(We don't have any real constructors or destructors.) */
#ifdef __GNUC__
#ifndef GCC_CTORS_IN_LIBC
-__do_global_ctors ()
+void __do_global_ctors ()
{}
-__do_global_ctors_aux ()
+void __do_global_ctors_aux ()
{}
-__do_global_dtors ()
+void __do_global_dtors ()
{}
/* Linux has a bug in its library; avoid an error. */
#ifndef LINUX
#endif
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
#endif /* GCC_CTORS_IN_LIBC */
-__main ()
+void __main ()
{}
#endif /* __GNUC__ */
#endif /* ORDINARY_LINK */
}
/* ARGSUSED */
+int
main (argc, argv, envp)
int argc;
char **argv;
char stack_bottom_variable;
int skip_args = 0;
extern int errno;
- extern sys_nerr;
+ extern int sys_nerr;
#ifdef HAVE_SETRLIMIT
struct rlimit rlim;
#endif
+ int no_loadup = 0;
#ifdef LINUX_SBRK_BUG
__sbrk (1);
#ifdef DOUG_LEA_MALLOC
if (initialized)
{
+ if (!malloc_using_checking)
+ /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
+ ignored if the heap to be restored was constructed without
+ malloc checking. */
+ unsetenv ("MALLOC_CHECK_");
malloc_set_state (malloc_state_ptr);
free (malloc_state_ptr);
- r_alloc_reinit ();
}
+ else
+ malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
#endif
#ifdef RUN_TIME_REMAP
#endif
sort_args (argc, argv);
+ argc = 0;
+ while (argv[argc]) argc++;
- if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
+ if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
+ /* We don't know the version number unless this is a dumped Emacs.
+ So ignore --version otherwise. */
+ && initialized)
{
Lisp_Object tem;
tem = Fsymbol_value (intern ("emacs-version"));
else
{
printf ("GNU Emacs %s\n", XSTRING (tem)->data);
- printf ("Copyright (C) 1997 Free Software Foundation, Inc.\n");
+ printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
printf ("You may redistribute copies of Emacs\n");
printf ("under the terms of the GNU General Public License.\n");
printf ("For more information about these matters, ");
- printf ("see the files named COPYING.\n");
+ printf ("see the file named COPYING.\n");
exit (0);
}
}
clearerr (stdin);
#ifndef SYSTEM_MALLOC
- if (! initialized)
- {
- /* Arrange to get warning messages as memory fills up. */
- memory_warnings (0, malloc_warning);
+ /* Arrange to get warning messages as memory fills up. */
+ memory_warnings (0, malloc_warning);
- /* Arrange to disable interrupt input while malloc and friends are
- running. */
- uninterrupt_malloc ();
- }
+ /* Call malloc at least once, to run the initial __malloc_hook.
+ Also call realloc and free for consistency. */
+ free (realloc (malloc (4), 4));
+
+ /* Arrange to disable interrupt input inside malloc etc. */
+ uninterrupt_malloc ();
#endif /* not SYSTEM_MALLOC */
#ifdef MSDOS
inhibit_window_system = 0;
/* Handle the -t switch, which specifies filename to use as terminal */
- {
- char *term;
- if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
- {
- int result;
- close (0);
- close (1);
- result = open (term, O_RDWR, 2 );
- if (result < 0)
- {
- char *errstring = strerror (errno);
- fprintf (stderr, "emacs: %s: %s\n", term, errstring);
- exit (1);
- }
- dup (0);
- if (! isatty (0))
- {
- fprintf (stderr, "emacs: %s: not a tty\n", term);
- exit (1);
- }
- fprintf (stderr, "Using %s\n", term);
+ while (1)
+ {
+ char *term;
+ if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
+ {
+ int result;
+ close (0);
+ close (1);
+ result = open (term, O_RDWR, 2 );
+ if (result < 0)
+ {
+ char *errstring = strerror (errno);
+ fprintf (stderr, "emacs: %s: %s\n", term, errstring);
+ exit (1);
+ }
+ dup (0);
+ if (! isatty (0))
+ {
+ fprintf (stderr, "emacs: %s: not a tty\n", term);
+ exit (1);
+ }
+ fprintf (stderr, "Using %s\n", term);
#ifdef HAVE_WINDOW_SYSTEM
- inhibit_window_system = 1; /* -t => -nw */
+ inhibit_window_system = 1; /* -t => -nw */
#endif
- }
- }
+ }
+ else
+ break;
+ }
+
if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
inhibit_window_system = 1;
if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
{
printf ("\
-Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
+Usage: %s [--batch] [-t term] [--terminal term]\n\
+ [-d display] [--display display] [-nw] [--no-windows]\n\
[-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
- [--version] [--no-site-file]\n\
- [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
- [+linenum] file-to-visit [--kill]\n\
-Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
+ [--unibyte] [--multibyte] [--version] [--no-site-file]\n\
+ [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\
+ [--insert file] [+linenum] file-to-visit [--kill]\n\
+Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\
the Bugs section of the Emacs manual or the file BUGS.\n", argv[0]);
exit (0);
}
-#ifdef HAVE_X_WINDOWS
- /* Stupid kludge to catch command-line display spec. We can't
- handle this argument entirely in window system dependent code
- because we don't even know which window system dependent code
- to run until we've recognized this argument. */
- {
- char *displayname = 0;
- int i;
- int count_before = skip_args;
-
- if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
- display_arg = 1;
- else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
- display_arg = 1;
-
- /* If we have the form --display=NAME,
- convert it into -d name.
- This requires inserting a new element into argv. */
- if (displayname != 0 && skip_args - count_before == 1)
- {
- char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
- int j;
-
- for (j = 0; j < count_before + 1; j++)
- new[j] = argv[j];
- new[count_before + 1] = "-d";
- new[count_before + 2] = displayname;
- for (j = count_before + 2; j <argc; j++)
- new[j + 1] = argv[j];
- argv = new;
- argc++;
- }
- /* Change --display to -d, when its arg is separate. */
- else if (displayname != 0 && skip_args > count_before
- && argv[count_before + 1][1] == '-')
- argv[count_before + 1] = "-d";
-
- /* Don't actually discard this arg. */
- skip_args = count_before;
- }
-#endif
-
if (! noninteractive)
{
#ifdef BSD_PGRPS
init_minibuf_once (); /* Create list of minibuffers */
/* Must precede init_window_once */
init_window_once (); /* Init the window system */
+ init_fileio_once (); /* Must precede any path manipulation. */
}
init_alloc ();
init_eval ();
+ init_coding ();
init_data ();
running_asynch_code = 0;
+ /* Handle --unibyte and the EMACS_UNIBYTE envvar,
+ but not while dumping. */
+ if (
+#ifndef CANNOT_DUMP
+ ! noninteractive || initialized
+#else
+ 1
+#endif
+ )
+ {
+ int inhibit_unibyte = 0;
+
+ /* --multibyte overrides EMACS_UNIBYTE. */
+ if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
+ || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args))
+ inhibit_unibyte = 1;
+
+ /* --unibyte requests that we set up to do everything with single-byte
+ buffers and strings. We need to handle this before calling
+ init_lread, init_editfns and other places that generate Lisp strings
+ from text in the environment. */
+ /* Actually this shouldn't be needed as of 20.4 in a generally
+ unibyte environment. As handa says, environment values
+ aren't now decoded; also existing buffers are now made
+ unibyte during startup if .emacs sets unibyte. Tested with
+ 8-bit data in environment variables and /etc/passwd, setting
+ unibyte and Latin-1 in .emacs. -- Dave Love */
+ if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
+ || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
+ || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
+ {
+ Lisp_Object old_log_max;
+ Lisp_Object symbol, tail;
+
+ symbol = intern ("default-enable-multibyte-characters");
+ Fset (symbol, Qnil);
+
+ if (initialized)
+ {
+ /* Erase pre-dump messages in *Messages* now so no abort. */
+ old_log_max = Vmessage_log_max;
+ XSETFASTINT (Vmessage_log_max, 0);
+ message_dolog ("", 0, 1, 0);
+ Vmessage_log_max = old_log_max;
+ }
+
+ for (tail = Vbuffer_alist; CONSP (tail);
+ tail = XCONS (tail)->cdr)
+ {
+ Lisp_Object buffer;
+
+ buffer = Fcdr (XCONS (tail)->car);
+ /* Verify that all buffers are empty now, as they
+ ought to be. */
+ if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
+ abort ();
+ /* It is safe to do this crudely in an empty buffer. */
+ XBUFFER (buffer)->enable_multibyte_characters = Qnil;
+ }
+ }
+ }
+
+ no_loadup
+ = !argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
+
+
+#ifdef HAVE_X_WINDOWS
+ /* Stupid kludge to catch command-line display spec. We can't
+ handle this argument entirely in window system dependent code
+ because we don't even know which window system dependent code
+ to run until we've recognized this argument. */
+ {
+ char *displayname = 0;
+ int i;
+ int count_before = skip_args;
+
+ /* Skip any number of -d options, but only use the last one. */
+ while (1)
+ {
+ int count_before_this = skip_args;
+
+ if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
+ display_arg = 1;
+ else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
+ display_arg = 1;
+ else
+ break;
+
+ count_before = count_before_this;
+ }
+
+ /* If we have the form --display=NAME,
+ convert it into -d name.
+ This requires inserting a new element into argv. */
+ if (displayname != 0 && skip_args - count_before == 1)
+ {
+ char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
+ int j;
+
+ for (j = 0; j < count_before + 1; j++)
+ new[j] = argv[j];
+ new[count_before + 1] = "-d";
+ new[count_before + 2] = displayname;
+ for (j = count_before + 2; j <argc; j++)
+ new[j + 1] = argv[j];
+ argv = new;
+ argc++;
+ }
+ /* Change --display to -d, when its arg is separate. */
+ else if (displayname != 0 && skip_args > count_before
+ && argv[count_before + 1][1] == '-')
+ argv[count_before + 1] = "-d";
+
+ /* Don't actually discard this arg. */
+ skip_args = count_before;
+ }
+#endif
+
+ /* argmatch must not be used after here,
+ except when bulding temacs
+ because the -d argument has not been skipped in skip_args. */
+
#ifdef MSDOS
/* Call early 'cause init_environment needs it. */
init_dosfns ();
#ifdef WINDOWSNT
/* Initialize environment from registry settings. */
- init_environment ();
+ init_environment (argv);
init_ntproc (); /* must precede init_editfns */
#endif
init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
init_lread ();
- if (!noninteractive)
- {
-#ifdef VMS
- init_vms_input ();/* init_display calls get_frame_size, that needs this */
-#endif /* VMS */
- init_display (); /* Determine terminal type. init_sys_modes uses results */
- }
- init_keyboard (); /* This too must precede init_sys_modes */
-#ifdef VMS
- init_vmsproc (); /* And this too. */
-#endif /* VMS */
- init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
- init_xdisp ();
- init_macros ();
- init_editfns ();
-#ifdef LISP_FLOAT_TYPE
- init_floatfns ();
-#endif
-#ifdef VMS
- init_vmsfns ();
-#endif /* VMS */
- init_process ();
-
-/* Intern the names of all standard functions and variables; define standard keys */
+ /* Intern the names of all standard functions and variables;
+ define standard keys. */
if (!initialized)
{
syms_of_w32faces ();
syms_of_w32select ();
syms_of_w32menu ();
+ syms_of_fontset ();
#endif /* HAVE_NTGUI */
#ifdef SYMS_SYSTEM
keys_of_frame ();
}
+ if (!noninteractive)
+ {
+#ifdef VMS
+ init_vms_input ();/* init_display calls get_frame_size, that needs this */
+#endif /* VMS */
+ init_display (); /* Determine terminal type. init_sys_modes uses results */
+ }
+ init_keyboard (); /* This too must precede init_sys_modes */
+#ifdef VMS
+ init_vmsproc (); /* And this too. */
+#endif /* VMS */
+ init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
+ init_xdisp ();
+ init_macros ();
+ init_editfns ();
+#ifdef LISP_FLOAT_TYPE
+ init_floatfns ();
+#endif
+#ifdef VMS
+ init_vmsfns ();
+#endif /* VMS */
+ init_process ();
+
if (!initialized)
{
char *file;
- /* Handle -l loadup-and-dump, args passed by Makefile. */
+ /* Handle -l loadup, args passed by Makefile. */
if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
Vtop_level = Fcons (intern ("load"),
Fcons (build_string (file), Qnil));
#ifdef CANNOT_DUMP
/* Unless next switch is -nl, load "loadup.el" first thing. */
- if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args))
+ if (! no_loadup)
Vtop_level = Fcons (intern ("load"),
Fcons (build_string ("loadup.el"), Qnil));
#endif /* CANNOT_DUMP */
struct standard_args standard_args[] =
{
- { "-version", "--version", 110, 0 },
- { "-help", "--help", 110, 0 },
- { "-nl", "--no-shared-memory", 100, 0 },
+ { "-version", "--version", 150, 0 },
+#ifdef HAVE_SHM
+ { "-nl", "--no-shared-memory", 140, 0 },
+#endif
#ifdef VMS
- { "-map", "--map-data", 100, 0 },
+ { "-map", "--map-data", 130, 0 },
+#endif
+ { "-t", "--terminal", 120, 1 },
+ { "-nw", "--no-windows", 110, 0 },
+ { "-batch", "--batch", 100, 0 },
+ { "-help", "--help", 90, 0 },
+ { "-no-unibyte", "--no-unibyte", 83, 0 },
+ { "-multibyte", "--multibyte", 82, 0 },
+ { "-unibyte", "--unibyte", 81, 0 },
+ { "-no-multibyte", "--no-multibyte", 80, 0 },
+#ifdef CANNOT_DUMP
+ { "-nl", "--no-loadup", 70, 0 },
#endif
- { "-t", "--terminal", 90, 1 },
- { "-d", "--display", 80, 1 },
- { "-display", 0, 80, 1 },
- { "-nw", "--no-windows", 70, 0 },
- { "-batch", "--batch", 60, 0 },
+ /* -d must come last before the options handled in startup.el. */
+ { "-d", "--display", 60, 1 },
+ { "-display", 0, 60, 1 },
+ /* Now for the options handled in startup.el. */
{ "-q", "--no-init-file", 50, 0 },
{ "-no-init-file", 0, 50, 0 },
{ "-no-site-file", "--no-site-file", 40, 0 },
/* Reorder the elements of ARGV (assumed to have ARGC elements)
so that the highest priority ones come first.
Do not change the order of elements of equal priority.
- If an option takes an argument, keep it and its argument together. */
+ If an option takes an argument, keep it and its argument together.
+
+ If an option that takes no argument appears more
+ than once, eliminate all but one copy of it. */
static void
sort_args (argc, argv)
int *options = (int *) xmalloc (sizeof (int) * argc);
int *priority = (int *) xmalloc (sizeof (int) * argc);
int to = 1;
+ int incoming_used = 1;
int from;
int i;
int end_of_options = argc;
/* Copy the arguments, in order of decreasing priority, to NEW. */
new[0] = argv[0];
- while (to < argc)
+ while (incoming_used < argc)
{
int best = -1;
int best_priority = -9999;
if (best < 0)
abort ();
- /* Copy the highest priority remaining option, with its args, to NEW. */
- new[to++] = argv[best];
- for (i = 0; i < options[best]; i++)
- new[to++] = argv[best + i + 1];
+ /* Copy the highest priority remaining option, with its args, to NEW.
+ Unless it is a duplicate of the previous one. */
+ if (! (options[best] == 0
+ && ! strcmp (new[to - 1], argv[best])))
+ {
+ new[to++] = argv[best];
+ for (i = 0; i < options[best]; i++)
+ new[to++] = argv[best + i + 1];
+ }
+
+ incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
/* Clear out this option in ARGV. */
argv[best] = 0;
argv[best + i + 1] = 0;
}
+ /* If duplicate options were deleted, fill up extra space with null ptrs. */
+ while (to < argc)
+ new[to++] = 0;
+
bcopy (new, argv, sizeof (char *) * argc);
free (options);
return Fnreverse (lpath);
}
+void
syms_of_emacs ()
{
Qfile_name_handler_alist = intern ("file-name-handler-alist");
#ifdef SIGUSR1
DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook,
- "Hook to be run whenever emacs recieves a USR1 signal");
+ "Hook to be run whenever emacs receives a USR1 signal");
Vsignal_USR1_hook = Qnil;
#ifdef SIGUSR2
DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook,
- "Hook to be run whenever emacs recieves a USR2 signal");
+ "Hook to be run whenever emacs receives a USR2 signal");
Vsignal_USR2_hook = Qnil;
#endif
#endif
before you compile Emacs, to enable the code for this feature.");
emacs_priority = 0;
+ DEFVAR_LISP ("path-separator", &Vpath_separator,
+ "The directory separator in search paths, as a string.");
+ {
+ char c = SEPCHAR;
+ Vpath_separator = make_string (&c, 1);
+ }
+
DEFVAR_LISP ("invocation-name", &Vinvocation_name,
"The program name that was used to run Emacs.\n\
Any directory names are omitted.");