@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, 2010
-@c Free Software Foundation, Inc.
+@c Copyright (C) 1990-1995, 1998-2011 Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@setfilename ../../info/text
@node Text, Non-ASCII Characters, Markers, Top
text, while other functions leave it after. We call the former
insertion @dfn{after point} and the latter insertion @dfn{before point}.
- Insertion relocates markers that point at positions after the
-insertion point, so that they stay with the surrounding text
-(@pxref{Markers}). When a marker points at the place of insertion,
-insertion may or may not relocate the marker, depending on the marker's
-insertion type (@pxref{Marker Insertion Types}). Certain special
-functions such as @code{insert-before-markers} relocate all such markers
-to point after the inserted text, regardless of the markers' insertion
-type.
+ Insertion moves markers located at positions after the insertion
+point, so that they stay with the surrounding text (@pxref{Markers}).
+When a marker points at the place of insertion, insertion may or may
+not relocate the marker, depending on the marker's insertion type
+(@pxref{Marker Insertion Types}). Certain special functions such as
+@code{insert-before-markers} relocate all such markers to point after
+the inserted text, regardless of the markers' insertion type.
Insertion functions signal an error if the current buffer is
read-only or if they insert within read-only text.
@defvar indent-line-function
This variable's value is the function to be used by @key{TAB} (and
various commands) to indent the current line. The command
-@code{indent-according-to-mode} does no more than call this function.
+@code{indent-according-to-mode} does little more than call this function.
In Lisp mode, the value is the symbol @code{lisp-indent-line}; in C
mode, @code{c-indent-line}; in Fortran mode, @code{fortran-indent-line}.
-The default value is @code{indent-relative}.
+The default value is @code{indent-relative}. @xref{Auto-Indentation}.
@end defvar
@deffn Command indent-according-to-mode
@end smallexample
@end defun
- See also the function @code{buffer-substring-no-properties}
-(@pxref{Buffer Contents}) which copies text from the buffer
-but does not copy its properties.
+ @xref{Buffer Contents}, for the function
+@code{buffer-substring-no-properties}, which copies text from the
+buffer but does not copy its properties.
@node Property Search
@subsection Text Property Search Functions
You can use the property @code{face} to control the font and color of
text. @xref{Faces}, for more information.
-In the simplest case, the value is a face name. It can also be a list;
-then each element can be any of these possibilities;
+@code{face} can be the following:
@itemize @bullet
@item
attribute. With this feature, you do not need to create a face each
time you want to specify a particular attribute for certain text.
@xref{Face Attributes}.
-
-@item
-A cons cell with the form @code{(foreground-color . @var{color-name})}
-or @code{(background-color . @var{color-name})}. These are old,
-deprecated equivalents for @code{(:foreground @var{color-name})} and
-@code{(:background @var{color-name})}. Please convert code that uses
-them.
@end itemize
-It works to use the latter two forms directly as the value
-of the @code{face} property.
+@code{face} can also be a list, where each element uses one of the
+forms listed above.
Font Lock mode (@pxref{Font Lock Mode}) works in most buffers by
dynamically updating the @code{face} property of characters based on
@item font-lock-face
@kindex font-lock-face @r{(text property)}
-The @code{font-lock-face} property is equivalent to the @code{face}
-property when Font Lock mode is enabled. When Font Lock mode is disabled,
+This property specifies a value for the @code{face} property that Font
+Lock mode should apply to the underlying text. It is one of the
+fontification methods used by Font Lock mode, and is useful for
+special modes that implement their own highlighting.
+@xref{Precalculated Fontification}. When Font Lock mode is disabled,
@code{font-lock-face} has no effect.
-The @code{font-lock-face} property is useful for special modes that
-implement their own highlighting. @xref{Precalculated Fontification}.
-
@item mouse-face
@kindex mouse-face @r{(text property)}
-The property @code{mouse-face} is used instead of @code{face} when the
-mouse is on or near the character. For this purpose, ``near'' means
-that all text between the character and where the mouse is have the same
+This property is used instead of @code{face} when the mouse is on or
+near the character. For this purpose, ``near'' means that all text
+between the character and where the mouse is have the same
@code{mouse-face} property value.
+Emacs ignores all face attributes from the @code{mouse-face} property
+that alter the text size (e.g. @code{:height}, @code{:weight}, and
+@code{:slant}). Those attributes are always the same as for the
+unhighlighted text.
+
@item fontified
@kindex fontified @r{(text property)}
This property says whether the text is ready for display. If
@code{point-left} functions are called first, followed by all the
@code{point-entered} functions.
-It is possible with @code{char-after} to examine characters at various
+It is possible to use @code{char-after} to examine characters at various
buffer positions without moving point to those positions. Only an
actual change in the value of point runs these hook functions.
+The variable @code{inhibit-point-motion-hooks} can inhibit running the
+@code{point-left} and @code{point-entered} hooks, see @ref{Inhibit
+point motion hooks}.
+
+@item composition
+@kindex composition @r{(text property)}
+This text property is used to display a sequence of characters as a
+single glyph composed from components. But the value of the property
+itself is completely internal to Emacs and should not be manipulated
+directly by, for instance, @code{put-text-property}.
+
+@end table
+
@defvar inhibit-point-motion-hooks
-When this variable is non-@code{nil}, @code{point-left} and
-@code{point-entered} hooks are not run, and the @code{intangible}
-property has no effect. Do not set this variable globally; bind it with
-@code{let}.
+@anchor{Inhibit point motion hooks} When this variable is
+non-@code{nil}, @code{point-left} and @code{point-entered} hooks are
+not run, and the @code{intangible} property has no effect. Do not set
+this variable globally; bind it with @code{let}.
@end defvar
@defvar show-help-function
Manual}) provides an example.
@end defvar
-@item composition
-@kindex composition @r{(text property)}
-This text property is used to display a sequence of characters as a
-single glyph composed from components. But the value of the property
-itself is completely internal to Emacs and should not be manipulated
-directly by, for instance, @code{put-text-property}.
-
-@end table
-
@node Format Properties
@subsection Formatted Text Properties
@node Parsing HTML
@section Parsing HTML
@cindex parsing html
-@cindex parsing xml
-Emacs provides an interface to the @code{libxml2} library via two
-functions: @code{html-parse-buffer} and @code{xml-parse-buffer}. The
-HTML function will parse ``real world'' HTML and try to return a
-sensible parse tree, while the XML function is somewhat stricter about
-syntax.
+@defun libxml-parse-html-region start end &optional base-url
+This function provides HTML parsing via the @code{libxml2} library.
+It parses ``real world'' HTML and tries to return a sensible parse tree
+regardless.
-They both take a two optional parameter. The first is a buffer, and
-the second is a base URL to be used to expand relative URLs in the
-document, if any.
+In addition to @var{start} and @var{end} (specifying the start and end
+of the region to act on), it takes an optional parameter,
+@var{base-url}, which is used to expand relative URLs in the document,
+if any.
Here's an example demonstrating the structure of the parsed data you
get out. Given this HTML document:
Attributes are coded the same way as child nodes, but with @samp{:} as
the first character.
+@end defun
+
+@cindex parsing xml
+@defun libxml-parse-xml-region start end &optional base-url
+
+This is much the same as @code{libxml-parse-html-region} above, but
+operates on XML instead of HTML, and is correspondingly stricter about
+syntax.
+@end defun
@node Atomic Changes
@section Atomic Change Groups
@cindex atomic changes
- In data base terminology, an @dfn{atomic} change is an indivisible
+ In database terminology, an @dfn{atomic} change is an indivisible
change---it can succeed entirely or it can fail entirely, but it
cannot partly succeed. A Lisp program can make a series of changes to
one or several buffers as an @dfn{atomic change group}, meaning that