[css-syntax] Fix "Consume a number", allow exponent sign.

Author: SimonSapin

css-syntax/Overview.html

@@ -12,7 +12,7 @@
 </a></p>
   <h1 class="p-name no-ref" id=title>CSS Syntax Module Level 3</h1>
   <h2 class="no-num no-toc no-ref" id=subtitle>Editor's Draft,
-    <span class=dt-updated><span class=value-title title=20130628>28 June 2013</span></span></h2>
+    <span class=dt-updated><span class=value-title title=20130701>1 July 2013</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>Feedback:</dt>
     <dd><a href="mailto:www-style@w3.org?subject=%5Bcss-syntax%5D%20feedback">www-style@w3.org</a> 
@@ -1469,8 +1469,9 @@ <h4 data-level=4.3.12 id=consume-a-number><span class=secno>4.3.12 </span>
 			</ol>
 
 		<li>
-			If the <a data-autolink=link href=#next-input-character title="next input character">next 2 input characters</a> are
-			U+0045 LATIN CAPITAL LETTER E (E) or U+0065 LATIN SMALL LETTER E (e)
+			If the <a data-autolink=link href=#next-input-character title="next input character">next 2 or 3 input characters</a> are
+			U+0045 LATIN CAPITAL LETTER E (E) or U+0065 LATIN SMALL LETTER E (e),
+			optionally followed by U+002D HYPHEN-MINUS (-) or U+002B PLUS SIGN (+),
 			followed by a <a data-autolink=link href=#digit>digit</a>,
 			then:
 

css-syntax/Overview.src.html

@@ -1356,8 +1356,9 @@ <h4>
 			</ol>
 
 		<li>
-			If the <a title="next input character">next 2 input characters</a> are
-			U+0045 LATIN CAPITAL LETTER E (E) or U+0065 LATIN SMALL LETTER E (e)
+			If the <a title="next input character">next 2 or 3 input characters</a> are
+			U+0045 LATIN CAPITAL LETTER E (E) or U+0065 LATIN SMALL LETTER E (e),
+			optionally followed by U+002D HYPHEN-MINUS (-) or U+002B PLUS SIGN (+),
 			followed by a <a>digit</a>,
 			then: