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[Bug 12167] The requirement on the listing element conflicts with its old definition (which requires a special parsing mode where no markup except the element's end tag is recognized) and usage. It is better to avoid requiring any support than to require support that

From: <bugzilla@jessica.w3.org>
Date: Fri, 04 Mar 2011 02:40:17 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1PvKwD-0005XA-Lb@jessica.w3.org>

--- Comment #1 from Aryeh Gregor <Simetrical+w3cbug@gmail.com> 2011-03-04 02:40:17 UTC ---
The HTML parser treats <listing> identically to <pre> in all respects.  This
implies that latest Gecko (Firefox), WebKit (Chrome/Safari), and Opera all
treat it this way, since they implement the standard HTML parser.  So if it
ever had any such legacy meaning, apparently that meaning is no longer
respected by browsers, and they've found any compatibility problems caused by
that to be negligible.  If the browsers are okay with this, it seems unlikely
that the parsing algorithm will be changed to restore the behavior.

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