@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
@c Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001,
-@c 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+@c 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+@c Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@setfilename ../../info/text
@node Text, Non-ASCII Characters, Markers, Top
* The Kill Ring:: Where removed text sometimes is saved for later use.
* Undo:: Undoing changes to the text of a buffer.
* Maintaining Undo:: How to enable and disable undo information.
- How to control how much information is kept.
+ How to control how much information is kept.
* Filling:: Functions for explicit filling.
* Margins:: How to specify margins for filling commands.
* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix from context.
* Kill Functions:: Functions that kill text.
* Yanking:: How yanking is done.
* Yank Commands:: Commands that access the kill ring.
-* Low-Level Kill Ring:: Functions and variables for kill ring access.
+* Low-Level Kill Ring:: Functions and variables for kill ring access.
* Internals of Kill Ring:: Variables that hold kill ring data.
@end menu
command stops at such a boundary, and successive undo commands undo
to earlier and earlier boundaries. This function returns @code{nil}.
-The editor command loop automatically creates an undo boundary before
-each key sequence is executed. Thus, each undo normally undoes the
-effects of one command. Self-inserting input characters are an
-exception. The command loop makes a boundary for the first such
-character; the next 19 consecutive self-inserting input characters do
-not make boundaries, and then the 20th does, and so on as long as
-self-inserting characters continue.
+The editor command loop automatically calls @code{undo-boundary} just
+before executing each key sequence, so that each undo normally undoes
+the effects of one command. As an exception, the command
+@code{self-insert-command}, which produces self-inserting input
+characters (@pxref{Commands for Insertion}), may remove the boundary
+inserted by the command loop: a boundary is accepted for the first
+such character, the next 19 consecutive self-inserting input
+characters do not have boundaries, and then the 20th does; and so on
+as long as the self-inserting characters continue. Hence, sequences
+of consecutive character insertions can be undone as a group.
All buffer modifications add a boundary whenever the previous undoable
change was made in some other buffer. This is to ensure that
@menu
* Examining Properties:: Looking at the properties of one character.
-* Changing Properties:: Setting the properties of a range of text.
-* Property Search:: Searching for where a property changes value.
-* Special Properties:: Particular properties with special meanings.
+* Changing Properties:: Setting the properties of a range of text.
+* Property Search:: Searching for where a property changes value.
+* Special Properties:: Particular properties with special meanings.
* Format Properties:: Properties for representing formatting of text.
* Sticky Properties:: How inserted text gets properties from
neighboring text.
do something when you click on them.
* Fields:: The @code{field} property defines
fields within the buffer.
-* Not Intervals:: Why text properties do not use
- Lisp-visible text intervals.
+* Not Intervals:: Why text properties do not use
+ Lisp-visible text intervals.
@end menu
@node Examining Properties
property when Font Lock mode is enabled. When Font Lock mode is disabled,
@code{font-lock-face} has no effect.
-The @code{font-lock-mode} property is useful for special modes that
+The @code{font-lock-face} property is useful for special modes that
implement their own highlighting. @xref{Precalculated Fontification}.
@item mouse-face