[css-syntax] Inserting /**/ at serialization may be needed even with preserved comments.

http://lists.w3.org/Archives/Public/www-style/2013Sep/0176.html

Author: SimonSapin

css-syntax/Overview.html

@@ -14,7 +14,7 @@
 </a></p>
   <h1 class="p-name no-ref" id=title>CSS Syntax Module Level 3</h1>
   <h2 class="no-num no-toc no-ref heading settled heading" id=subtitle><span class=content>Editor’s Draft,
-    <span class=dt-updated><span class=value-title title=20130907>7 September 2013</span></span></span></h2>
+    <span class=dt-updated><span class=value-title title=20130911>11 September 2013</span></span></span></h2>
   <div data-fill-with=spec-metadata><dl><dt>This version:<dd><a class=u-url href=http://dev.w3.org/csswg/css-syntax>http://dev.w3.org/csswg/css-syntax</a><dt>Editor’s Draft:<dd><a href=http://dev.w3.org/csswg/css-syntax>http://dev.w3.org/csswg/css-syntax</a><dt>Previous Versions:<dd><a href=http://www.w3.org/TR/2003/WD-css3-syntax-20030813/ rel=previous>http://www.w3.org/TR/2003/WD-css3-syntax-20030813/</a>
 <dt>Feedback:</dt>
     <dd><a href="mailto:www-style@w3.org?subject=%5Bcss-syntax%5D%20feedback">www-style@w3.org</a>
@@ -2829,7 +2829,7 @@ <h2 class="heading settled heading" data-level=9 id=serialization><span class=se
 	followed by its contents
 	followed by "*/".
 
-<p>	If the implementation does not preserve comments,
+<p>	Unless the implementation has a preserved comment at that position,
 	it must insert the text "/**/" between the serialization of adjacent tokens
 	when the two tokens are of the following pairs:
 

css-syntax/Overview.src.html

@@ -2717,7 +2717,7 @@ <h2 id="serialization">
 	followed by its contents
 	followed by "*/".
 
-	If the implementation does not preserve comments,
+	Unless the implementation has a preserved comment at that position,
 	it must insert the text "/**/" between the serialization of adjacent tokens
 	when the two tokens are of the following pairs: