[css2] Better text for BOM errata.

bert-github · bert-github · commit 16b00da6a9c8 · 2013-05-02T16:00:15.000Z
--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%403277
diff --git a/css2/syndata.src b/css2/syndata.src
@@ -1,6 +1,6 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
 <html lang="en">
-<!-- $Id: syndata.src,v 2.194 2013-05-02 14:01:28 bbos Exp $ -->
+<!-- $Id: syndata.src,v 2.195 2013-05-02 16:00:15 bbos Exp $ -->
 <head>
 <title>Syntax and basic data types</title>
 <!--script src="http://www.w3c-test.org/css/harness/annotate.js#CSS21_DEV" type="text/javascript" defer></script-->
@@ -1446,13 +1446,13 @@ class="index-inst">UTF-8</span> encoding.
 </p>
 
 <p>If rule 1 above (an HTTP "charset" parameter or similar) yields a
-character encoding and it is one of UTF-8, UTF-16, UTF-16BE, UTF-16LE,
-UTF-32, UTF-32BE or UTF-32LE, then a BOM, if any, at the start of the
-file overrides that character encoding, as follows:
+character encoding and it is one of UTF-8, UTF-16 or UTF-32, then a
+BOM, if any, at the start of the file overrides that character
+encoding, as follows:
 
 <table>
 <thead>
-<th><th>First bytes (hexadecimal)  <th>Resulting encoding
+<tr><th>First bytes (hexadecimal)  <th>Resulting encoding
 <tbody>
 <tr><td>00 00 FE FF  <td>UTF-32, big-endian
 <tr><td>FF FE 00 00  <td>UTF-32, little-endian
@@ -1461,9 +1461,14 @@ file overrides that character encoding, as follows:
 <tr><td>EF BB BF     <td>UTF-8
 </table>
 
-<p class=note>Note that, if rule 1 yields UTF-16BE, UTF-16LE, UTF-32BE
-or UTF-32LE, a BOM at the start of the file is an error. (Unicode
-forbids a BOM in such files).
+<p>If rule 1 yields a character encoding of UTF-16BE, UTF-16LE,
+UTF-32BE or UTF-32LE, then it is an error if the file starts with a
+BOM. A CSS UA must recover by ignoring the specified encoding and
+using the table above.
+
+<p class=note>Note that the fact that a BOM at the start of a file is
+en error in UTF-16BE, UTF-16LE, UTF-32BE or UTF-32LE is specified by
+[[UNICODE]].
 
 <p>User agents must ignore any @charset rule not at the beginning of the
 style sheet. When user agents detect the character encoding using the
