[giow] (3) Change atob() to ignore whitespace. This is a potentially …

…breaking change, but Opera has implemented it for a while and doesn't seem to have had any problems resulting.

Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@6874 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

  <header class=head id=head><p><a class=logo href=http://www.whatwg.org/><img alt=WHATWG height=101 src=/images/logo width=101></a></p>
   <hgroup><h1 class=allcaps>HTML</h1>
    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 14 December 2011</h2>
    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 15 December 2011</h2>
   </hgroup><dl><dt><strong>Web developer edition:</strong></dt>
    <dd><strong><a href=http://developers.whatwg.org/>http://developers.whatwg.org/</a></strong></dd>
    <dt>Multiple-page version:</dt>
   (4.0b8). WebKit is somewhat laxer, and Opera throws no exceptions
   at all. gsnedders reports Opera's behavior causes site-compat
   problems, and I figure most sites depend on Firefox if on anything,
   so go with that. --><li><p>Let <var title="">input</var> be the string being
   so go with that. --><!-- Since updated to drop whitespace, based on the arguments here:
      http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-May/031613.html
   --><li><p>Let <var title="">input</var> be the string being
   parsed.</li>

   <li><p>Let <var title="">position</var> be a pointer into <var title="">input</var>, initially pointing at the start of the
   string.</li>

   <li><p>Remove all <a href=#space-character title="space character">space
   characters</a> from <var title="">input</var>.</li>

   <li><p>If the length of <var title="">input</var> divides by 4
   leaving no remainder, then: if <var title="">input</var> ends with
   one or two U+003D EQUALS SIGN (=) characters, remove them from <var title="">input</var>.</li>

index

  <header class=head id=head><p><a class=logo href=http://www.whatwg.org/><img alt=WHATWG height=101 src=/images/logo width=101></a></p>
   <hgroup><h1 class=allcaps>HTML</h1>
    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 14 December 2011</h2>
    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 15 December 2011</h2>
   </hgroup><dl><dt><strong>Web developer edition:</strong></dt>
    <dd><strong><a href=http://developers.whatwg.org/>http://developers.whatwg.org/</a></strong></dd>
    <dt>Multiple-page version:</dt>
   (4.0b8). WebKit is somewhat laxer, and Opera throws no exceptions
   at all. gsnedders reports Opera's behavior causes site-compat
   problems, and I figure most sites depend on Firefox if on anything,
   so go with that. --><li><p>Let <var title="">input</var> be the string being
   so go with that. --><!-- Since updated to drop whitespace, based on the arguments here:
      http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-May/031613.html
   --><li><p>Let <var title="">input</var> be the string being
   parsed.</li>

   <li><p>Let <var title="">position</var> be a pointer into <var title="">input</var>, initially pointing at the start of the
   string.</li>

   <li><p>Remove all <a href=#space-character title="space character">space
   characters</a> from <var title="">input</var>.</li>

   <li><p>If the length of <var title="">input</var> divides by 4
   leaving no remainder, then: if <var title="">input</var> ends with
   one or two U+003D EQUALS SIGN (=) characters, remove them from <var title="">input</var>.</li>

source

   problems, and I figure most sites depend on Firefox if on anything,
   so go with that. -->

   <!-- Since updated to drop whitespace, based on the arguments here:
      http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-May/031613.html
   -->

   <li><p>Let <var title="">input</var> be the string being
   parsed.</p></li>

   <li><p>Let <var title="">position</var> be a pointer into <var
   title="">input</var>, initially pointing at the start of the
   string.</p></li>

   <li><p>Remove all <span title="space character">space
   characters</span> from <var title="">input</var>.</p></li>

   <li><p>If the length of <var title="">input</var> divides by 4
   leaving no remainder, then: if <var title="">input</var> ends with
   one or two U+003D EQUALS SIGN (=) characters, remove them from <var