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 2, or (at your option)
+any later version.
+
GNU Emacs is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY. No author or distributor
-accepts responsibility to anyone for the consequences of using it
-or for whether it serves any particular purpose or works at all,
-unless he says so in writing. Refer to the GNU Emacs General Public
-License for full details.
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
-Everyone is granted permission to copy, modify and redistribute
-GNU Emacs, but only under the conditions described in the
-GNU Emacs General Public License. A copy of this license is
-supposed to have been given to you along with GNU Emacs so you
-can know your rights and responsibilities. It should be in a
-file named COPYING. Among other things, the copyright notice
-and this notice must be preserved on all copies. */
+You should have received a copy of the GNU General Public License
+along with GNU Emacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
#include <config.h>
if (MODIFF <= SAVE_MODIFF)
record_first_change ();
- if (point == beg + length)
+ if (PT == beg + length)
XSETINT (sbeg, -beg);
else
XSETFASTINT (sbeg, beg);
current_buffer->undo_list);
}
+/* Record the fact that MARKER is about to be adjusted by ADJUSTMENT.
+ This is done only when a marker points within text being deleted,
+ because that's the only case where an automatic marker adjustment
+ won't be inverted automatically by undoing the buffer modification. */
+
+record_marker_adjustment (marker, adjustment)
+ Lisp_Object marker;
+ int adjustment;
+{
+ if (EQ (current_buffer->undo_list, Qt))
+ return;
+
+ /* Allocate a cons cell to be the undo boundary after this command. */
+ if (NILP (pending_boundary))
+ pending_boundary = Fcons (Qnil, Qnil);
+
+ if (current_buffer != XBUFFER (last_undo_buffer))
+ Fundo_boundary ();
+ XSETBUFFER (last_undo_buffer, current_buffer);
+
+ current_buffer->undo_list
+ = Fcons (Fcons (marker, make_number (adjustment)),
+ current_buffer->undo_list);
+}
+
/* Record that a replacement is about to take place,
for LENGTH characters at location BEG.
The replacement does not change the number of characters. */
error ("Changes to be undone are outside visible portion of buffer");
SET_PT (pos);
- /* Insert before markers so that if the mark is
- currently on the boundary of this deletion, it
- ends up on the other side of the now-undeleted
- text from point. Since undo doesn't even keep
- track of the mark, this isn't really necessary,
- but it may lead to better behavior in certain
- situations. */
- Finsert_before_markers (1, &membuf);
+ /* Now that we record marker adjustments
+ (caused by deletion) for undo,
+ we should always insert after markers,
+ so that undoing the marker adjustments
+ put the markers back in the right place. */
+ Finsert (1, &membuf);
SET_PT (pos);
}
}
+ else if (MARKERP (car) && INTEGERP (cdr))
+ {
+ /* (MARKER . INTEGER) means a marker MARKER
+ was adjusted by INTEGER. */
+ if (XMARKER (car)->buffer)
+ Fset_marker (car,
+ make_number (marker_position (car) - XINT (cdr)),
+ Fmarker_buffer (car));
+ }
}
}
arg--;