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[Emacs-diffs] Changes to emacs/lispref/display.texi,v
From: |
Kim F. Storm |
Subject: |
[Emacs-diffs] Changes to emacs/lispref/display.texi,v |
Date: |
Wed, 14 Feb 2007 11:31:28 +0000 |
CVSROOT: /cvsroot/emacs
Module name: emacs
Changes by: Kim F. Storm <kfstorm> 07/02/14 11:31:28
Index: display.texi
===================================================================
RCS file: /cvsroot/emacs/emacs/lispref/display.texi,v
retrieving revision 1.248
retrieving revision 1.249
diff -u -b -r1.248 -r1.249
--- display.texi 10 Feb 2007 12:04:34 -0000 1.248
+++ display.texi 14 Feb 2007 11:31:28 -0000 1.249
@@ -5266,26 +5266,32 @@
@cindex glyph
A @dfn{glyph} is a generalization of a character; it stands for an
-image that takes up a single character position on the screen. Glyphs
-are represented in Lisp as integers, just as characters are. Normally
+image that takes up a single character position on the screen. Normally
glyphs come from vectors in the display table (@pxref{Display Tables}).
- A glyph code can be @dfn{simple} or it can be defined by the
address@hidden table}. A simple glyph code is just a way of specifying a
-character and a face to output it in. When a glyph code is simple,
-the code, mod 524288, is the character to output, and the code divided
-by 524288 specifies the face number (@pxref{Face Functions}) to use
-while outputting it. (524288 is
address@hidden
-2**19.)
address@hidden ifnottex
address@hidden
-$2^{19}$.)
address@hidden tex
address@hidden
+ A glyph is represented in Lisp as a @dfn{glyph code}. A glyph code
+can be @dfn{simple} or it can be defined by the @dfn{glyph table}. A
+simple glyph code is just a way of specifying a character and a face
+to output it in. @xref{Faces}.
+
+ The following functions are used to manipulate simple glyph codes:
+
address@hidden make-glyph-code char &optional face
+This function returns a simple glyph code representing char @var{char}
+with face @var{face}.
address@hidden defun
+
address@hidden glyph-char glyph
+This function returns the character of simple glyph code @var{glyph}.
address@hidden defun
+
address@hidden glyph-face glyph
+This function returns face of simple glyph code @var{glyph}, or
address@hidden if @var{glyph} has the default face (face-id 0).
address@hidden defun
On character terminals, you can set up a @dfn{glyph table} to define
-the meaning of glyph codes.
+the meaning of glyph codes (represented as small integers).
@defvar glyph-table
The value of this variable is the current glyph table. It should be
@@ -5307,10 +5313,10 @@
Send the characters in @var{string} to the terminal to output
this glyph code.
address@hidden @var{integer}
-Define this glyph code as an alias for glyph code @var{integer}. You
-can use such an alias to define a small-numbered glyph code which
-specifies a face.
address@hidden @var{code}
+Define this glyph code as an alias for glyph code @var{code} created
+by @code{make-glyph-code}. You can use such an alias to define a
+small-numbered glyph code which specifies a character with a face.
@item @code{nil}
This glyph code is simple.