Merge changes from emacs-23 branch

[bpt/emacs.git] / lisp / faces.el

diff --git a/lisp/faces.el b/lisp/faces.el
index a46ee6c..11c4108 100644 (file)
--- a/lisp/faces.el
+++ b/lisp/faces.el
@@ -1,8 +1,6 @@
 ;;; faces.el --- Lisp faces
 
-;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-;;   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 1992-1996, 1998-2011  Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: internal
@@ -590,10 +588,14 @@ It must be one of the symbols `ultra-condensed', `extra-condensed',
 
 `:height'
 
-VALUE must be either an integer specifying the height of the font to use
-in 1/10 pt, a floating point number specifying the amount by which to
-scale any underlying face, or a function, which is called with the old
-height (from the underlying face), and should return the new height.
+VALUE specifies the height of the font, in either absolute or relative
+terms.  An absolute height is an integer, and specifies font height in
+units of 1/10 pt.  A relative height is either a floating point number,
+which specifies a scaling factor for the underlying face height;
+or a function that takes a single argument (the underlying face height)
+and returns the new height.  Note that for the `default' face,
+you can only specify an absolute height (since there is nothing
+for it to be relative to).
 
 `:weight'
 
@@ -1575,13 +1577,25 @@ Optional parameter FRAME is the frame whose definition of FACE
 is used.  If nil or omitted, use the selected frame."
   (unless frame
     (setq frame (selected-frame)))
-  (let ((list face-attribute-name-alist)
-       (match t))
+  (let* ((list face-attribute-name-alist)
+        (match t)
+        (bold (and (plist-member attrs :bold)
+                   (not (plist-member attrs :weight))))
+        (italic (and (plist-member attrs :italic)
+                     (not (plist-member attrs :slant))))
+        (plist (if (or bold italic)
+                   (copy-sequence attrs)
+                 attrs)))
+    ;; Handle the Emacs 20 :bold and :italic properties.
+    (if bold
+       (plist-put plist :weight (if bold 'bold 'normal)))
+    (if italic
+       (plist-put plist :slant (if italic 'italic 'normal)))
     (while (and match list)
       (let* ((attr (caar list))
             (specified-value
-             (if (plist-member attrs attr)
-                 (plist-get attrs attr)
+             (if (plist-member plist attr)
+                 (plist-get plist attr)
                'unspecified))
             (value-now (face-attribute face attr frame)))
        (setq match (equal specified-value value-now))