[Emacs-diffs] emacs/lisp/emacs-lisp byte-run.el

[Glenn Morris]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       09/08/31 01:32:38

Modified files:
        lisp/emacs-lisp: byte-run.el 

Log message:
        (define-obsolete-face-alias): New macro.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/emacs-lisp/byte-run.el?cvsroot=emacs&r1=1.37&r2=1.38

Patches:
Index: byte-run.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/emacs-lisp/byte-run.el,v
retrieving revision 1.37
retrieving revision 1.38
diff -u -b -r1.37 -r1.38
--- byte-run.el 5 Jan 2009 03:20:46 -0000       1.37
+++ byte-run.el 31 Aug 2009 01:32:36 -0000      1.38
@@ -1,7 +1,7 @@
 ;;; byte-run.el --- byte-compiler support for inlining
 
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+;;   2009  Free Software Foundation, Inc.
 
 ;; Author: Jamie Zawinski <address@hidden>
 ;;     Hallvard Furuseth <address@hidden>
@@ -180,6 +180,21 @@
      (defvaralias ,obsolete-name ,current-name ,docstring)
      (make-obsolete-variable ,obsolete-name ,current-name ,when)))
 
+;; FIXME This is only defined in this file because the variable- and
+;; function- versions are too.  Unlike those two, this one is not used
+;; by the byte-compiler (would be nice if it could warn about obsolete
+;; faces, but it doesn't really do anything special with faces).
+;; It only really affects M-x describe-face output.
+(defmacro define-obsolete-face-alias (obsolete-face current-face
+                                                   &optional when)
+  "Make OBSOLETE-FACE a face alias for CURRENT-FACE and mark it obsolete.
+The optional string WHEN gives the Emacs version where OBSOLETE-FACE
+became obsolete."
+  `(progn
+     (put ,obsolete-face 'face-alias ,current-face)
+     ;; Used by M-x describe-face.
+     (put ,obsolete-face 'obsolete-face (or ,when t))))
+
 (defmacro dont-compile (&rest body)
   "Like `progn', but the body always runs interpreted (not compiled).
 If you think you need this, you're probably making a mistake somewhere."