[css2] Issues 24 and 85.

bert-github · bert-github · commit 333d97c38fc8 · 2009-04-15T07:24:39.000Z
--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402895
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 2.164 2009-02-03 11:24:59 bbos Exp $ -->
+<!-- $Id: syndata.src,v 2.165 2009-04-15 07:24:39 bbos Exp $ -->
 <head>
 <title>Syntax and basic data types</title>
 <meta name="editor" lang="tr" content="Tantek &Ccedil;elik">
@@ -271,7 +271,8 @@ href="#parsing-errors">rules for handling parsing errors</a>. However, because t
 	</p>
     <p>Second, it cancels the meaning of special CSS characters.
         Except within CSS comments, any character (except a
-        hexadecimal digit) can be escaped
+        hexadecimal digit or a linefeed, carriage return of formfeed)
+        can be escaped
         with a backslash to remove its special meaning.
         For example, <samp>"\""</samp> is a string consisting of one
         double quote. Style sheet preprocessors must not remove
@@ -666,6 +667,27 @@ p { color:red;   color{;color:maroon}; color:green } /* same with recovery */
 </li>
 
 
+<li><strong>Malformed statements.</strong> User agents must handle
+unexpected tokens encountered while parsing a statement by reading
+until the end of the statement, while observing the rules for matching
+pairs of (), [], {}, "", and '', and correctly handling escapes. For
+example, a malformed statement may contain an unexpected closing brace
+or at-keyword. E.g., the following lines are all ignored:
+
+<!-- An unexpected token when parsing the stylesheet production is
+considered to be the start of a (malformed) ruleset, which ends at
+the next balanced {} pair at top level. -->
+
+<pre>
+p @here {color: red}     /* ruleset with unexpected at-keyword "@here" */
+@foo @bar;               /* at-rule with unexpected at-keyword "@bar" */
+}} {{ - }}               /* ruleset with unexpected right brace */
+) ( {} ) p {color: red } /* ruleset with unexpected right parenthesis */
+</pre>
+
+<!-- Note that the ") (" in the last line do not count as a balanced
+pair. -->
+
 <li><strong>Invalid at-keywords.</strong> User agents must <span
 class="index-inst" title="ignore"><a href="#ignore">ignore</a></span>
 an invalid at-keyword together with everything following it, up to and
