Preserve comments in the token stream. :/

Author: tabatkins

css3-syntax/Overview.html

@@ -607,7 +607,8 @@ <h3 id=tokenization><span class=secno>3.4. </span> Tokenization</h3>
   <p> The output of the tokenization step is a series of zero or more of the
    following tokens: identifier, function, at-keyword, hash, string,
    bad-string, url, bad-url, delim, number, percentage, dimension,
-   unicode-range, whitespace, cdo, cdc, colon, semicolon, [, ], (, ), {, }.
+   unicode-range, whitespace, comment, cdo, cdc, colon, semicolon, [, ], (,
+   ), {, }.
 
   <p> Identifier, function, at-keyword, hash, string, and url tokens have a
    value composed of zero or more characters. Delim tokens have a value
@@ -1060,13 +1061,13 @@ <h4 id=comment-state><span class=secno>3.4.8. </span> <dfn
    <dt>U+002A ASTERISK (*)
 
    <dd> If the <a href="#next-input-character"><i>next input
-    character</i></a> is U+002F SOLIDUS (/), consume it, and switch to the <a
-    href="#data-state0"><i>data state</i></a>.
+    character</i></a> is U+002F SOLIDUS (/), consume it, emit a comment
+    token, and switch to the <a href="#data-state0"><i>data state</i></a>.
     <p> Otherwise, do nothing and remain in this state.
 
    <dt>EOF
 
-   <dd> This is a <i>parse error</i>. Switch to the <a
+   <dd> This is a <i>parse error</i>. Emit a comment token. Switch to the <a
     href="#data-state0"><i>data state</i></a>. Reconsume the <a
     href="#current-input-character"><i>current input character</i></a>.
 
@@ -2092,7 +2093,7 @@ <h3 id=tree-construction><span class=secno>3.6. </span> Tree Construction</h3>
 
    <dd> The tokens that can appear in the tree are: identifier, hash, string,
     url, delim, number, percentage, dimension, unicode-range, whitespace,
-    cdo, cdc, colon, semicolon, at-keyword, ], ), and }.
+    comment, cdo, cdc, colon, semicolon, at-keyword, ], ), and }.
     <p class=note> This means that the following tokens emitted by the
      tokenizer stage will <strong>not</strong> appear in the stylesheet
      object: function, bad-string, bad-url, [, (, {. <span class=issue>I need
@@ -2682,7 +2683,9 @@ <h3 id=changes-from-css-2.1-core-grammar><span class=secno>3.7. </span>
    browsers, please let me know as it's almost certainly unintentional.
 
   <ol>
-   <li>
+   <li> No whitespace or comments are allowed between the DELIM(!) and
+    IDENT(important) tokens when processing an !important directive at the
+    end of a style rule.
   </ol>
   <!--
     

css3-syntax/Overview.src.html

@@ -355,6 +355,7 @@ <h3>
 		dimension,
 		unicode-range,
 		whitespace,
+		comment,
 		cdo,
 		cdc,
 		colon,
@@ -885,6 +886,7 @@ <h4>
 			If the <i>next input character</i> is
 			U+002F SOLIDUS (/),
 			consume it,
+			emit a comment token,
 			and switch to the <i>data state</i>.
 
 			<p>
@@ -895,6 +897,7 @@ <h4>
 		<dt>EOF
 		<dd>
 			This is a <i>parse error</i>.
+			Emit a comment token.
 			Switch to the <i>data state</i>.
 			Reconsume the <i>current input character</i>.
 
@@ -2093,6 +2096,7 @@ <h3>
 			dimension,
 			unicode-range,
 			whitespace,
+			comment,
 			cdo,
 			cdc,
 			colon,
@@ -2728,6 +2732,8 @@ <h3>
 
 	<ol>
 		<li>
+			No whitespace or comments are allowed between the DELIM(!) and IDENT(important) tokens 
+			when processing an !important directive at the end of a style rule.
 	</ol>