[css-syntax] Define <an+b> serialization.

--HG--
extra : rebase_source : bacb551962433c18e1df74e2eca24183a51669dd

Author: tabatkins

css-syntax/Overview.html

@@ -11,7 +11,7 @@
 
   <meta content="CSS Syntax Module Level 3 (CSS3 Syntax)" name=dcterms.title>
   <meta content=text name=dcterms.type>
-  <meta content=2013-05-17 name=dcterms.date>
+  <meta content=2013-05-21 name=dcterms.date>
   <meta content="Tab Atkins Jr." name=dcterms.creator>
   <meta content=W3C name=dcterms.publisher>
   <meta content="http://dev.w3.org/csswg/css3-syntax/"
@@ -32,7 +32,7 @@
    <h1 class=p-name>CSS Syntax Module Level 3</h1>
 
    <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft <time
-    class=dt-updated datetime=20130517>17 May 2013</time></h2>
+    class=dt-updated datetime=20130521>21 May 2013</time></h2>
 
    <dl>
     <dt>This version:
@@ -4166,7 +4166,37 @@ <h2 id=serialization><span class=secno>7. </span>Serialization</h2>
   <h3 id=serializing-anb><span class=secno>7.1. </span> Serializing <a
    href="#anb-production"><var>&lt;an+b></var></a></h3>
 
-  <p class=issue> Define this. <!--
+  <p> To serialize an <a href="#anb-production"><var>&lt;an+b></var></a>
+   value, let <var>s</var> initially be the empty string:
+
+  <dl>
+   <dt><a href="#a"><var>A</var></a> and <a href="#b"><var>B</var></a> are
+    both zero
+
+   <dd> Append "0" to <var>s</var>.
+
+   <dt><a href="#a"><var>A</var></a> is zero, <a href="#b"><var>B</var></a>
+    is non-zero
+
+   <dd> Serialize <a href="#b"><var>B</var></a> and append it to
+    <var>s</var>.
+
+   <dt><a href="#a"><var>A</var></a> is non-zero, <a
+    href="#b"><var>B</var></a> is zero
+
+   <dd> Serialize <a href="#a"><var>A</var></a> and append it to
+    <var>s</var>. Append "n" to <var>s</var>.
+
+   <dt><a href="#a"><var>A</var></a> and <a href="#b"><var>B</var></a> are
+    both non-zero
+
+   <dd> Serialize <a href="#a"><var>A</var></a> and append it to
+    <var>s</var>. Append "n" to <var>s</var>. If <a
+    href="#b"><var>B</var></a> is positive, append "+" to <var>s</var>.
+    Serialize <a href="#b"><var>B</var></a> and append it to <var>s</var>.
+  </dl>
+
+  <p> Return <var>s</var>. <!--
 
 TTTTTTTTTTTTTTTTTTTTTTTHHHHHHHHH     HHHHHHHHHEEEEEEEEEEEEEEEEEEEEEE
 T:::::::::::::::::::::TH:::::::H     H:::::::HE::::::::::::::::::::E

css-syntax/Overview.src.html

@@ -3056,8 +3056,36 @@ <h2>Serialization</h2>
 <h3 id='serializing-anb'>
 Serializing <var>&lt;an+b></var></h3>
 
-	<p class='issue'>
-		Define this.
+	<p>
+		To serialize an <var>&lt;an+b></var> value,
+		let <var>s</var> initially be the empty string:
+
+	<dl>
+		<dt><var>A</var> and <var>B</var> are both zero
+		<dd>
+			Append "0" to <var>s</var>.
+
+		<dt><var>A</var> is zero, <var>B</var> is non-zero
+		<dd>
+			Serialize <var>B</var> and append it to <var>s</var>.
+
+		<dt><var>A</var> is non-zero, <var>B</var> is zero
+		<dd>
+			Serialize <var>A</var> and append it to <var>s</var>.
+			Append "n" to <var>s</var>.
+
+		<dt><var>A</var> and <var>B</var> are both non-zero
+		<dd>
+			Serialize <var>A</var> and append it to <var>s</var>.
+			Append "n" to <var>s</var>.
+			If <var>B</var> is positive,
+			append "+" to <var>s</var>.
+			Serialize <var>B</var> and append it to <var>s</var>.
+	</dl>
+
+	<p>
+		Return <var>s</var>.
+