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(Special Properties): Document composition property.

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Kenichi Handa 2007-04-19 06:10:34 +00:00
parent 34f23456fc
commit e159624dea
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@ -1,3 +1,7 @@
2007-04-19 Kenichi Handa <handa@m17n.org>
* text.texi (Special Properties): Document composition property.
2007-04-19 Glenn Morris <rgm@gnu.org>
* files.texi (File Name Expansion): Mention "superroot".

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lispref/text.texi
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@ -3241,7 +3241,6 @@ functions (which may be the same function). In any case, all the
It is possible with @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.
@end table
@defvar inhibit-point-motion-hooks
When this variable is non-@code{nil}, @code{point-left} and
@ -3260,6 +3259,27 @@ string to display. Tooltip mode (@pxref{Tooltips,,, emacs, The GNU Emacs
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. For instance, Thai base
consonant is composed with the following combining vowel as a single
glyph.
The value is a character or a sequence (vector, list, or
string) of integers.
If it is a character, it is an alternate character to display instead
of the text in the region.
If it is a string, it is an alternate character sequences to
display.
If it is a vector or list, it is a sequence of alternate
characters interleaved with internal codes specifying how to
compose the following character with the previous one.
@end table
@node Format Properties
@subsection Formatted Text Properties