/* Buffer manipulation primitives for GNU Emacs.
- Copyright (C) 1985, 1986, 1987, 1988, 1989 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1987, 1988, 1989, 1992, 1993
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+#include <sys/types.h>
+#include <sys/stat.h>
#include <sys/param.h>
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif /* not MAXPATHLEN */
-#ifdef NULL
-#undef NULL
-#endif
#include "config.h"
#include "lisp.h"
+#include "intervals.h"
#include "window.h"
#include "commands.h"
#include "buffer.h"
/* A Lisp_Object pointer to the above, used for staticpro */
static Lisp_Object Vbuffer_local_symbols;
+/* This structure holds the required types for the values in the
+ buffer-local slots. If a slot contains Qnil, then the
+ corresponding buffer slot may contain a value of any type. If a
+ slot contains an integer, then prospective values' tags must be
+ equal to that integer. When a tag does not match, the function
+ buffer_slot_type_mismatch will signal an error. */
+struct buffer buffer_local_types;
+
/* Nonzero means don't allow modification of protected fields. */
int check_protected_fields;
Lisp_Object Vbefore_change_function;
Lisp_Object Vafter_change_function;
-/* Function to call before changing an unmodified buffer. */
-Lisp_Object Vfirst_change_function;
+/* List of functions to call before changing an unmodified buffer. */
+Lisp_Object Vfirst_change_hook;
+Lisp_Object Qfirst_change_hook;
Lisp_Object Qfundamental_mode, Qmode_class, Qpermanent_local;
if (XTYPE (buf) != Lisp_Buffer) continue;
if (XTYPE (XBUFFER (buf)->filename) != Lisp_String) continue;
tem = Fstring_equal (XBUFFER (buf)->filename, filename);
- if (!NULL (tem))
+ if (!NILP (tem))
return buf;
}
return Qnil;
DEFUN ("get-buffer-create", Fget_buffer_create, Sget_buffer_create, 1, 1, 0,
"Return the buffer named NAME, or create such a buffer and return it.\n\
A new buffer is created if there is no live buffer named NAME.\n\
+If NAME starts with a space, the new buffer does not keep undo information.\n\
If NAME is a buffer instead of a string, then it is the value returned.\n\
The value is never nil.")
(name)
register struct buffer *b;
buf = Fget_buffer (name);
- if (!NULL (buf))
+ if (!NILP (buf))
return buf;
b = (struct buffer *) malloc (sizeof (struct buffer));
b->name = name;
function = buffer_defaults.major_mode;
- if (NULL (function))
+ if (NILP (function))
{
tem = Fget (current_buffer->major_mode, Qmode_class);
if (EQ (tem, Qnil))
function = current_buffer->major_mode;
}
- if (NULL (function) || EQ (function, Qfundamental_mode))
+ if (NILP (function) || EQ (function, Qfundamental_mode))
return buf;
/* To select a nonfundamental mode,
b->directory = (current_buffer) ? current_buffer->directory : Qnil;
b->modtime = 0;
b->save_modified = 1;
- b->save_length = 0;
+ XFASTINT (b->save_length) = 0;
b->last_window_start = 1;
b->backed_up = Qnil;
b->auto_save_modified = 0;
b->auto_save_file_name = Qnil;
b->read_only = Qnil;
b->fieldlist = Qnil;
+
+ /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
+ INITIALIZE_INTERVAL (b, NULL_INTERVAL);
+
reset_buffer_local_variables(b);
}
CHECK_STRING (name, 0);
tem = Fget_buffer (name);
- if (NULL (tem))
+ if (NILP (tem))
return name;
count = 1;
sprintf (number, "<%d>", ++count);
gentemp = concat2 (name, build_string (number));
tem = Fget_buffer (gentemp);
- if (NULL (tem))
+ if (NILP (tem))
return gentemp;
}
}
(buffer)
register Lisp_Object buffer;
{
- if (NULL (buffer))
+ if (NILP (buffer))
return current_buffer->name;
CHECK_BUFFER (buffer, 0);
return XBUFFER (buffer)->name;
(buffer)
register Lisp_Object buffer;
{
- if (NULL (buffer))
+ if (NILP (buffer))
return current_buffer->filename;
CHECK_BUFFER (buffer, 0);
return XBUFFER (buffer)->filename;
register struct buffer *buf;
register Lisp_Object val;
- if (NULL (buffer))
+ if (NILP (buffer))
buf = current_buffer;
else
{
register Lisp_Object buffer;
{
register struct buffer *buf;
- if (NULL (buffer))
+ if (NILP (buffer))
buf = current_buffer;
else
{
If buffer becoming unmodified, unlock the file. */
fn = current_buffer->filename;
- if (!NULL (fn))
+ if (!NILP (fn))
{
already = current_buffer->save_modified < MODIFF;
- if (!already && !NULL (flag))
+ if (!already && !NILP (flag))
lock_file (fn);
- else if (already && NULL (flag))
+ else if (already && NILP (flag))
unlock_file (fn);
}
#endif /* CLASH_DETECTION */
- current_buffer->save_modified = NULL (flag) ? MODIFF : 0;
+ current_buffer->save_modified = NILP (flag) ? MODIFF : 0;
update_mode_lines++;
return flag;
}
register Lisp_Object buffer;
{
register struct buffer *buf;
- if (NULL (buffer))
+ if (NILP (buffer))
buf = current_buffer;
else
{
}
\f
DEFUN ("rename-buffer", Frename_buffer, Srename_buffer, 1, 2,
- "sRename buffer (to new name): ",
+ "sRename buffer (to new name): \nP",
"Change current buffer's name to NEWNAME (a string).\n\
-If second arg DISTINGUISH is nil or omitted, it is an error if a\n\
+If second arg UNIQUE is nil or omitted, it is an error if a\n\
buffer named NEWNAME already exists.\n\
-If DISTINGUISH is non-nil, come up with a new name using\n\
+If UNIQUE is non-nil, come up with a new name using\n\
`generate-new-buffer-name'.\n\
-Return the name we actually gave the buffer.\n\
+Interactively, you can set UNIQUE with a prefix argument.\n\
+We return the name we actually gave the buffer.\n\
This does not change the name of the visited file (if any).")
- (name, distinguish)
- register Lisp_Object name, distinguish;
+ (name, unique)
+ register Lisp_Object name, unique;
{
register Lisp_Object tem, buf;
tem = Fget_buffer (name);
if (XBUFFER (tem) == current_buffer)
return current_buffer->name;
- if (!NULL (tem))
+ if (!NILP (tem))
{
- if (!NULL (distinguish))
+ if (!NILP (unique))
name = Fgenerate_new_buffer_name (name);
else
error ("Buffer name \"%s\" is in use", XSTRING (name)->data);
}
current_buffer->name = name;
+
+ /* Catch redisplay's attention. Unless we do this, the mode lines for
+ any windows displaying current_buffer will stay unchanged. */
+ update_mode_lines++;
+
XSET (buf, Lisp_Buffer, current_buffer);
Fsetcar (Frassq (buf, Vbuffer_alist), name);
- if (NULL (current_buffer->filename) && !NULL (current_buffer->auto_save_file_name))
+ if (NILP (current_buffer->filename) && !NILP (current_buffer->auto_save_file_name))
call0 (intern ("rename-auto-save-file"));
return name;
}
-DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 1, 0,
+DEFUN ("other-buffer", Fother_buffer, Sother_buffer, 0, 2, 0,
"Return most recently selected buffer other than BUFFER.\n\
-Buffers not visible in windows are preferred to visible buffers.\n\
+Buffers not visible in windows are preferred to visible buffers,\n\
+unless optional second argument VISIBLE-OK is non-nil.\n\
If no other buffer exists, the buffer `*scratch*' is returned.\n\
If BUFFER is omitted or nil, some interesting buffer is returned.")
- (buffer)
- register Lisp_Object buffer;
+ (buffer, visible_ok)
+ register Lisp_Object buffer, visible_ok;
{
register Lisp_Object tail, buf, notsogood, tem;
notsogood = Qnil;
- for (tail = Vbuffer_alist; !NULL (tail); tail = Fcdr (tail))
+ for (tail = Vbuffer_alist; !NILP (tail); tail = Fcdr (tail))
{
buf = Fcdr (Fcar (tail));
if (EQ (buf, buffer))
continue;
if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ')
continue;
- tem = Fget_buffer_window (buf, Qnil);
- if (NULL (tem))
+ if (NILP (visible_ok))
+ tem = Fget_buffer_window (buf, Qnil);
+ else
+ tem = Qnil;
+ if (NILP (tem))
return buf;
- if (NULL (notsogood))
+ if (NILP (notsogood))
notsogood = buf;
}
- if (!NULL (notsogood))
+ if (!NILP (notsogood))
return notsogood;
return Fget_buffer_create (build_string ("*scratch*"));
}
DEFUN ("buffer-disable-undo", Fbuffer_disable_undo, Sbuffer_disable_undo, 1,1,
0,
"Make BUFFER stop keeping undo information.")
- (buf)
- register Lisp_Object buf;
+ (buffer)
+ register Lisp_Object buffer;
{
- CHECK_BUFFER (buf, 0);
- XBUFFER (buf)->undo_list = Qt;
+ Lisp_Object real_buffer;
+
+ if (NILP (buffer))
+ XSET (real_buffer, Lisp_Buffer, current_buffer);
+ else
+ {
+ real_buffer = Fget_buffer (buffer);
+ if (NILP (real_buffer))
+ nsberror (buffer);
+ }
+
+ XBUFFER (real_buffer)->undo_list = Qt;
+
return Qnil;
}
0, 1, "",
"Start keeping undo information for buffer BUFFER.\n\
No argument or nil as argument means do this for the current buffer.")
- (buf)
- register Lisp_Object buf;
+ (buffer)
+ register Lisp_Object buffer;
{
- register struct buffer *b;
- register Lisp_Object buf1;
+ Lisp_Object real_buffer;
- if (NULL (buf))
- b = current_buffer;
+ if (NILP (buffer))
+ XSET (real_buffer, Lisp_Buffer, current_buffer);
else
{
- buf1 = Fget_buffer (buf);
- if (NULL (buf1)) nsberror (buf);
- b = XBUFFER (buf1);
+ real_buffer = Fget_buffer (buffer);
+ if (NILP (real_buffer))
+ nsberror (buffer);
}
- if (EQ (b->undo_list, Qt))
- b->undo_list = Qnil;
+ if (EQ (XBUFFER (real_buffer)->undo_list, Qt))
+ XBUFFER (real_buffer)->undo_list = Qnil;
return Qnil;
}
register struct Lisp_Marker *m;
struct gcpro gcpro1, gcpro2;
- if (NULL (bufname))
+ if (NILP (bufname))
buf = Fcurrent_buffer ();
else
buf = Fget_buffer (bufname);
- if (NULL (buf))
+ if (NILP (buf))
nsberror (bufname);
b = XBUFFER (buf);
/* Query if the buffer is still modified. */
- if (INTERACTIVE && !NULL (b->filename)
+ if (INTERACTIVE && !NILP (b->filename)
&& BUF_MODIFF (b) > b->save_modified)
{
GCPRO2 (buf, bufname);
tem = do_yes_or_no_p (format1 ("Buffer %s modified; kill anyway? ",
XSTRING (b->name)->data));
UNGCPRO;
- if (NULL (tem))
+ if (NILP (tem))
return Qnil;
}
if (EQ (buf, XWINDOW (minibuf_window)->buffer))
return Qnil;
- if (NULL (b->name))
+ if (NILP (b->name))
return Qnil;
/* Make this buffer not be current.
and give up if so. */
if (b == current_buffer)
{
- tem = Fother_buffer (buf);
+ tem = Fother_buffer (buf, Qnil);
Fset_buffer (tem);
if (b == current_buffer)
return Qnil;
unlock_buffer (b);
#endif /* CLASH_DETECTION */
-#ifdef subprocesses
kill_buffer_processes (buf);
-#endif /* subprocesses */
tem = Vinhibit_quit;
Vinhibit_quit = Qt;
{
Lisp_Object tem;
tem = Fsymbol_value (intern ("delete-auto-save-files"));
- if (! NULL (tem))
+ if (! NILP (tem))
unlink (XSTRING (b->auto_save_file_name)->data);
}
}
b->markers = Qnil;
+ /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
+ INITIALIZE_INTERVAL (b, NULL_INTERVAL);
+ /* Perhaps we should explicitly free the interval tree here... */
+
b->name = Qnil;
BUFFER_FREE (BUF_BEG_ADDR (b));
b->undo_list = Qnil;
return Qt;
}
\f
-/* Put the element for buffer BUF at the front of buffer-alist.
- This is done when a buffer is selected "visibly".
- It keeps buffer-alist in the order of recency of selection
- so that other_buffer will return something nice. */
+/* Move the assoc for buffer BUF to the front of buffer-alist. Since
+ we do this each time BUF is selected visibly, the more recently
+ selected buffers are always closer to the front of the list. This
+ means that other_buffer is more likely to choose a relevant buffer. */
record_buffer (buf)
Lisp_Object buf;
prev = link;
}
- /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist)
- but cannot use Fdelq here it that allows quitting. */
+ /* Effectively do Vbuffer_alist = Fdelq (link, Vbuffer_alist);
+ we cannot use Fdelq itself here because it allows quitting. */
- if (NULL (prev))
+ if (NILP (prev))
Vbuffer_alist = XCONS (Vbuffer_alist)->cdr;
else
XCONS (prev)->cdr = XCONS (XCONS (prev)->cdr)->cdr;
if (EQ (minibuf_window, selected_window))
error ("Cannot switch buffers in minibuffer window");
tem = Fwindow_dedicated_p (selected_window);
- if (!NULL (tem))
+ if (!NILP (tem))
error ("Cannot switch buffers in a dedicated window");
- if (NULL (bufname))
- buf = Fother_buffer (Fcurrent_buffer ());
+ if (NILP (bufname))
+ buf = Fother_buffer (Fcurrent_buffer (), Qnil);
else
buf = Fget_buffer_create (bufname);
Fset_buffer (buf);
- if (NULL (norecord))
+ if (NILP (norecord))
record_buffer (buf);
Fset_window_buffer (EQ (selected_window, minibuf_window)
- ? Fnext_window (minibuf_window, Qnil) : selected_window,
+ ? Fnext_window (minibuf_window, Qnil, Qnil)
+ : selected_window,
buf);
return Qnil;
Lisp_Object bufname, other;
{
register Lisp_Object buf;
- if (NULL (bufname))
- buf = Fother_buffer (Fcurrent_buffer ());
+ if (NILP (bufname))
+ buf = Fother_buffer (Fcurrent_buffer (), Qnil);
else
buf = Fget_buffer_create (bufname);
Fset_buffer (buf);
/* Look down buffer's list of local Lisp variables
to find and update any that forward into C variables. */
- for (tail = b->local_var_alist; !NULL (tail); tail = XCONS (tail)->cdr)
+ for (tail = b->local_var_alist; !NILP (tail); tail = XCONS (tail)->cdr)
{
valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value;
if ((XTYPE (valcontents) == Lisp_Buffer_Local_Value
/* Do the same with any others that were local to the previous buffer */
if (old_buf)
- for (tail = old_buf->local_var_alist; !NULL (tail); tail = XCONS (tail)->cdr)
+ for (tail = old_buf->local_var_alist; !NILP (tail); tail = XCONS (tail)->cdr)
{
valcontents = XSYMBOL (XCONS (XCONS (tail)->car)->car)->value;
if ((XTYPE (valcontents) == Lisp_Buffer_Local_Value
{
register Lisp_Object buffer;
buffer = Fget_buffer (bufname);
- if (NULL (buffer))
+ if (NILP (buffer))
nsberror (bufname);
- if (NULL (XBUFFER (buffer)->name))
+ if (NILP (XBUFFER (buffer)->name))
error ("Selecting deleted buffer");
set_buffer_internal (XBUFFER (buffer));
return buffer;
"Signal a `buffer-read-only' error if the current buffer is read-only.")
()
{
- while (!NULL (current_buffer->read_only))
+ while (!NILP (current_buffer->read_only))
Fsignal (Qbuffer_read_only, (Fcons (Fcurrent_buffer (), Qnil)));
return Qnil;
}
DEFUN ("bury-buffer", Fbury_buffer, Sbury_buffer, 0, 1, "",
"Put BUFFER at the end of the list of all buffers.\n\
There it is the least likely candidate for `other-buffer' to return;\n\
-thus, the least likely buffer for \\[switch-to-buffer] to select by default.")
+thus, the least likely buffer for \\[switch-to-buffer] to select by default.\n\
+If BUFFER is nil or omitted, bury the current buffer.\n\
+Also, if BUFFER is nil or omitted, remove the current buffer from the\n\
+selected window if it is displayed there.")
(buf)
register Lisp_Object buf;
{
- register Lisp_Object aelt, link;
-
- if (NULL (buf))
+ /* Figure out what buffer we're going to bury. */
+ if (NILP (buf))
{
XSET (buf, Lisp_Buffer, current_buffer);
- Fswitch_to_buffer (Fother_buffer (buf), Qnil);
+
+ /* If we're burying the current buffer, unshow it. */
+ Fswitch_to_buffer (Fother_buffer (buf, Qnil), Qnil);
}
else
{
Lisp_Object buf1;
buf1 = Fget_buffer (buf);
- if (NULL (buf1))
+ if (NILP (buf1))
nsberror (buf);
buf = buf1;
- }
+ }
+
+ /* Move buf to the end of the buffer list. */
+ {
+ register Lisp_Object aelt, link;
+
+ aelt = Frassq (buf, Vbuffer_alist);
+ link = Fmemq (aelt, Vbuffer_alist);
+ Vbuffer_alist = Fdelq (aelt, Vbuffer_alist);
+ XCONS (link)->cdr = Qnil;
+ Vbuffer_alist = nconc2 (Vbuffer_alist, link);
+ }
- aelt = Frassq (buf, Vbuffer_alist);
- link = Fmemq (aelt, Vbuffer_alist);
- Vbuffer_alist = Fdelq (aelt, Vbuffer_alist);
- XCONS (link)->cdr = Qnil;
- Vbuffer_alist = nconc2 (Vbuffer_alist, link);
return Qnil;
}
\f
-DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, 0,
+DEFUN ("erase-buffer", Ferase_buffer, Serase_buffer, 0, 0, "*",
"Delete the entire contents of the current buffer.\n\
-Any clipping restriction in effect (see `narrow-to-buffer') is removed,\n\
+Any clipping restriction in effect (see `narrow-to-region') is removed,\n\
so the buffer is truly empty after this.")
()
{
tail = intern ("Buffer-menu-mode");
if (!EQ (tail, current_buffer->major_mode)
- && (tem = Ffboundp (tail), !NULL (tem)))
+ && (tem = Ffboundp (tail), !NILP (tem)))
call0 (tail);
Fbuffer_disable_undo (Vstandard_output);
current_buffer->read_only = Qnil;
MR Buffer Size Mode File\n\
-- ------ ---- ---- ----\n", -1);
- for (tail = Vbuffer_alist; !NULL (tail); tail = Fcdr (tail))
+ for (tail = Vbuffer_alist; !NILP (tail); tail = Fcdr (tail))
{
buf = Fcdr (Fcar (tail));
b = XBUFFER (buf);
if (XSTRING (b->name)->data[0] == ' ')
continue;
/* Optionally don't mention buffers that lack files. */
- if (!NULL (files) && NULL (b->filename))
+ if (!NILP (files) && NILP (b->filename))
continue;
/* Identify the current buffer. */
if (b == old)
write_string (b == old ? "." : " ", -1);
/* Identify modified buffers */
write_string (BUF_MODIFF (b) > b->save_modified ? "*" : " ", -1);
- write_string (NULL (b->read_only) ? " " : "% ", -1);
+ write_string (NILP (b->read_only) ? " " : "% ", -1);
Fprinc (b->name, Qnil);
Findent_to (col1, make_number (2));
XFASTINT (tem) = BUF_Z (b) - BUF_BEG (b);
Fprinc (b->mode_name, Qnil);
Findent_to (col3, minspace);
- if (!NULL (b->filename))
+ if (!NILP (b->filename))
Fprinc (b->filename, Qnil);
else
{
Lisp_Object tem;
set_buffer_internal (b);
tem = Fboundp (other_file_symbol);
- if (!NULL (tem))
+ if (!NILP (tem))
{
tem = Fsymbol_value (other_file_symbol);
Fset_buffer (Vstandard_output);
/* Make sure no local variables remain set up with this buffer
for their current values. */
- for (alist = oalist; !NULL (alist); alist = XCONS (alist)->cdr)
+ for (alist = oalist; !NILP (alist); alist = XCONS (alist)->cdr)
{
sym = XCONS (XCONS (alist)->car)->car;
/* Any which are supposed to be permanent,
make local again, with the same values they had. */
- for (alist = oalist; !NULL (alist); alist = XCONS (alist)->cdr)
+ for (alist = oalist; !NILP (alist); alist = XCONS (alist)->cdr)
{
sym = XCONS (XCONS (alist)->car)->car;
tem = Fget (sym, Qpermanent_local);
- if (! NULL (tem))
+ if (! NILP (tem))
{
Fmake_local_variable (sym);
Fset (sym, XCONS (XCONS (alist)->car)->cdr);
Lisp_Object fieldlist;
Lisp_Object collector;
- if (NULL (buffer))
+ if (NILP (buffer))
fieldlist = current_buffer->fieldlist;
else
{
if ((start_loc < field_start && end_loc > field_start)
|| (start_loc >= field_start && start_loc < field_end))
{
- if (!NULL (error_check))
+ if (!NILP (error_check))
{
- if (!NULL (FIELD_PROTECTED_FLAG (field)))
+ if (!NILP (FIELD_PROTECTED_FLAG (field)))
{
struct gcpro gcpro1;
GCPRO1 (fieldlist);
return collector;
}
\f
+/* Somebody has tried to store NEWVAL into the buffer-local slot with
+ offset XUINT (valcontents), and NEWVAL has an unacceptable type. */
+void
+buffer_slot_type_mismatch (valcontents, newval)
+ Lisp_Object valcontents, newval;
+{
+ unsigned int offset = XUINT (valcontents);
+ unsigned char *symbol_name =
+ (XSYMBOL (*(Lisp_Object *)(offset + (char *)&buffer_local_symbols))
+ ->name->data);
+ char *type_name;
+
+ switch (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_types)))
+ {
+ case Lisp_Int: type_name = "integers"; break;
+ case Lisp_String: type_name = "strings"; break;
+ case Lisp_Marker: type_name = "markers"; break;
+ case Lisp_Symbol: type_name = "symbols"; break;
+ case Lisp_Cons: type_name = "lists"; break;
+ case Lisp_Vector: type_name = "vectors"; break;
+ default:
+ abort ();
+ }
+
+ error ("only %s should be stored in the buffer-local variable %s",
+ type_name, symbol_name);
+}
+\f
init_buffer_once ()
{
register Lisp_Object tem;
/* super-magic invisible buffer */
Vbuffer_alist = Qnil;
- tem = Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
- /* Want no undo records for *scratch*
- until after Emacs is dumped */
- Fbuffer_disable_undo (tem);
+ Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
}
init_buffer ()
{
char buf[MAXPATHLEN+1];
+ char *pwd;
+ struct stat dotstat, pwdstat;
Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
- if (getwd (buf) == 0)
+
+ /* If PWD is accurate, use it instead of calling getwd. This is faster
+ when PWD is right, and may avoid a fatal error. */
+ if ((pwd = getenv ("PWD")) != 0 && *pwd == '/'
+ && stat (pwd, &pwdstat) == 0
+ && stat (".", &dotstat) == 0
+ && dotstat.st_ino == pwdstat.st_ino
+ && dotstat.st_dev == pwdstat.st_dev
+ && strlen (pwd) < MAXPATHLEN)
+ strcpy (buf, pwd);
+ else if (getwd (buf) == 0)
fatal ("`getwd' failed: %s.\n", buf);
#ifndef VMS
"Default value of `case-fold-search' for buffers that don't override it.\n\
This is the same as (default-value 'case-fold-search).");
- DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format, 0);
+ DEFVAR_PER_BUFFER ("mode-line-format", ¤t_buffer->mode_line_format,
+ Qnil, 0);
/* This doc string is too long for cpp; cpp dies if it isn't in a comment.
But make-docfile finds it!
nil here means use current buffer's major mode.");
DEFVAR_PER_BUFFER ("major-mode", ¤t_buffer->major_mode,
+ make_number (Lisp_Symbol),
"Symbol for current buffer's major mode.");
DEFVAR_PER_BUFFER ("mode-name", ¤t_buffer->mode_name,
+ make_number (Lisp_String),
"Pretty name of current buffer's major mode (a string).");
- DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode,
+ DEFVAR_PER_BUFFER ("abbrev-mode", ¤t_buffer->abbrev_mode, Qnil,
"Non-nil turns on automatic expansion of abbrevs as they are inserted.\n\
Automatically becomes buffer-local when set in any fashion.");
DEFVAR_PER_BUFFER ("case-fold-search", ¤t_buffer->case_fold_search,
+ Qnil,
"*Non-nil if searches should ignore case.\n\
Automatically becomes buffer-local when set in any fashion.");
DEFVAR_PER_BUFFER ("fill-column", ¤t_buffer->fill_column,
+ make_number (Lisp_Int),
"*Column beyond which automatic line-wrapping should happen.\n\
Automatically becomes buffer-local when set in any fashion.");
DEFVAR_PER_BUFFER ("left-margin", ¤t_buffer->left_margin,
+ make_number (Lisp_Int),
"*Column for the default indent-line-function to indent to.\n\
Linefeed indents to this column in Fundamental mode.\n\
Automatically becomes buffer-local when set in any fashion.");
DEFVAR_PER_BUFFER ("tab-width", ¤t_buffer->tab_width,
+ make_number (Lisp_Int),
"*Distance between tab stops (for display of tab characters), in columns.\n\
Automatically becomes buffer-local when set in any fashion.");
- DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow,
+ DEFVAR_PER_BUFFER ("ctl-arrow", ¤t_buffer->ctl_arrow, Qnil,
"*Non-nil means display control chars with uparrow.\n\
Nil means use backslash and octal digits.\n\
Automatically becomes buffer-local when set in any fashion.\n\
This variable does not apply to characters whose display is specified\n\
in the current display table (if there is one).");
- DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines,
+ DEFVAR_PER_BUFFER ("truncate-lines", ¤t_buffer->truncate_lines, Qnil,
"*Non-nil means do not display continuation lines;\n\
give each line of text one screen line.\n\
Automatically becomes buffer-local when set in any fashion.\n\
\n\
Note that this is overridden by the variable\n\
`truncate-partial-width-windows' if that variable is non-nil\n\
-and this buffer is not full-screen width.");
+and this buffer is not full-frame width.");
DEFVAR_PER_BUFFER ("default-directory", ¤t_buffer->directory,
+ make_number (Lisp_String),
"Name of default directory of current buffer. Should end with slash.\n\
Each buffer has its own value of this variable.");
DEFVAR_PER_BUFFER ("auto-fill-function", ¤t_buffer->auto_fill_function,
+ Qnil,
"Function called (if non-nil) to perform auto-fill.\n\
It is called after self-inserting a space at a column beyond `fill-column'.\n\
Each buffer has its own value of this variable.\n\
It may not be a list of functions.");
DEFVAR_PER_BUFFER ("buffer-file-name", ¤t_buffer->filename,
+ make_number (Lisp_String),
"Name of file visited in current buffer, or nil if not visiting a file.\n\
Each buffer has its own value of this variable.");
DEFVAR_PER_BUFFER ("buffer-auto-save-file-name",
- ¤t_buffer->auto_save_file_name,
+ ¤t_buffer->auto_save_file_name,
+ make_number (Lisp_String),
"Name of file for auto-saving current buffer,\n\
or nil if buffer should not be auto-saved.\n\
Each buffer has its own value of this variable.");
- DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only,
+ DEFVAR_PER_BUFFER ("buffer-read-only", ¤t_buffer->read_only, Qnil,
"Non-nil if this buffer is read-only.\n\
Each buffer has its own value of this variable.");
- DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up,
+ DEFVAR_PER_BUFFER ("buffer-backed-up", ¤t_buffer->backed_up, Qnil,
"Non-nil if this buffer's file has been backed up.\n\
Backing up is done before the first time the file is saved.\n\
Each buffer has its own value of this variable.");
DEFVAR_PER_BUFFER ("buffer-saved-size", ¤t_buffer->save_length,
+ make_number (Lisp_Int),
"Length of current buffer when last read in, saved or auto-saved.\n\
0 initially.\n\
Each buffer has its own value of this variable.");
DEFVAR_PER_BUFFER ("selective-display", ¤t_buffer->selective_display,
+ Qnil,
"Non-nil enables selective display:\n\
Integer N as value means display only lines\n\
that start with less than n columns of space.\n\
#ifndef old
DEFVAR_PER_BUFFER ("selective-display-ellipses",
¤t_buffer->selective_display_ellipses,
+ Qnil,
"t means display ... on previous line when a line is invisible.\n\
Automatically becomes buffer-local when set in any fashion.");
#endif
- DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode,
+ DEFVAR_PER_BUFFER ("overwrite-mode", ¤t_buffer->overwrite_mode, Qnil,
"Non-nil if self-insertion should replace existing text.\n\
Automatically becomes buffer-local when set in any fashion.");
DEFVAR_PER_BUFFER ("buffer-display-table", ¤t_buffer->display_table,
+ Qnil,
"Display table that controls display of the contents of current buffer.\n\
Automatically becomes buffer-local when set in any fashion.\n\
The display table is a vector created with `make-display-table'.\n\
If this variable is nil, the value of `standard-display-table' is used.\n\
Each window can have its own, overriding display table.");
- DEFVAR_PER_BUFFER ("buffer-field-list", ¤t_buffer->fieldlist,
+ DEFVAR_PER_BUFFER ("buffer-field-list", ¤t_buffer->fieldlist, Qnil,
"List of fields in the current buffer. See `add-field'.");
- DEFVAR_BOOL ("check-protected-fields", check_protected_fields,
+ DEFVAR_BOOL ("check-protected-fields", &check_protected_fields,
"Non-nil means don't allow modification of a protected field.\n\
See `add-field'.");
check_protected_fields = 0;
cause calls to any `before-change-function' or `after-change-function'.");
Vafter_change_function = Qnil;
- DEFVAR_LISP ("first-change-function", &Vfirst_change_function,
- "Function to call before changing a buffer which is unmodified.\n\
-The function is called, with no arguments, if it is non-nil.");
- Vfirst_change_function = Qnil;
+ DEFVAR_LISP ("first-change-hook", &Vfirst_change_hook,
+ "A list of functions to call before changing a buffer which is unmodified.\n\
+The functions are run using the `run-hooks' function.");
+ Vfirst_change_hook = Qnil;
+ Qfirst_change_hook = intern ("first-change-hook");
+ staticpro (&Qfirst_change_hook);
- DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list,
+ DEFVAR_PER_BUFFER ("buffer-undo-list", ¤t_buffer->undo_list, Qnil,
"List of undo entries in current buffer.\n\
Recent changes come first; older changes follow newer.\n\
\n\
modification count of the most recent save is different, this entry is\n\
obsolete.\n\
\n\
+An entry (nil PROP VAL BEG . END) indicates that a text property\n\
+was modified between BEG and END. PROP is the property name,\n\
+and VAL is the old value.\n\
+\n\
nil marks undo boundaries. The undo command treats the changes\n\
between two undo boundaries as a single step to be undone.\n\
\n\
HCoop / bpt / emacs.git / blobdiff