[css2] issue 156 (text-decoration changes)

Hixie · Hixie · commit 484b0e1ac219 · 2006-10-10T19:15:22.000Z
--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402564
diff --git a/css2/text.src b/css2/text.src
@@ -1,6 +1,6 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
 <html lang="en">
-<!-- $Id: text.src,v 2.55 2006-06-02 16:18:03 bbos Exp $ -->
+<!-- $Id: text.src,v 2.56 2006-10-10 19:15:22 ihickson Exp $ -->
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
 <title>Text</title>
@@ -157,20 +157,20 @@ It is not, however, further propagated to floating and absolutely
 positioned descendants, nor to the contents of 'inline-table' and 
 'inline-block' descendants.
 </p><p>
-If an element contains no text (ignoring white space in elements 
-that have 'white-space' set to 'normal', 'pre-line', or 'nowrap'), 
-user agents must refrain from rendering text decorations on the 
-element. For example, elements containing only images and collapsed 
-white space will not be underlined.
+Underlines, overlines, and line-throughs are applied only to text
+(including white space, letter spacing, and word spacing): margins,
+borders, and padding are skipped. If an element contains no text,
+user agents must refrain from rendering these text decorations on the
+element. For example, images will not be underlined.
 </p><p>
-Text decorations on inline boxes are drawn across the entire 
-element, going across any descendant elements without paying any 
-attention to their presence. The 'text-decoration' property on 
-descendant elements cannot have any effect on the decoration of the 
-element. In determining the position of and thickness of text 
-decoration lines, user agents may consider the font sizes of and 
-dominant baselines of descendants, but must use the same baseline 
-and thickness on each line.
+The 'text-decoration' property on descendant elements cannot have any
+effect on the decoration of the ancestor. In determining the position
+of and thickness of text decoration lines, user agents may consider the
+font sizes of and dominant baselines of descendants, but must use the
+same baseline and thickness on each line. Relatively positioning a
+descendant moves all text decorations affecting it along with the
+descendant's text; it does not affect calculation of the decoration's
+initial position on that line.
 </p>
 
 <p>Values have the following meanings:</p>
@@ -194,13 +194,13 @@ is one technique to satisfy
 <p>
 The color(s) required for the text decoration must be derived from 
 the <span class="propinst-color">'color'</span> property value of the element on which 'text-decoration' 
-is set. The color of decorations should remain the same even if 
+is set. The color of decorations must remain the same even if 
 descendant elements have different <span class="propinst-color">'color'</span> values.
 </p>
 <p>
 Some user agents have implemented text-decoration by 
 propagating the decoration to the descendant elements as opposed to 
-simply drawing the decoration through the elements as described 
+preserving a constant thickness and line position as described 
 above. This was arguably allowed by the looser wording in CSS2. SVG1, 
 CSS1-only, and CSS2-only user agents may implement the older model 
 and still claim conformance to this part of CSS&nbsp;2.1. (This does not 
