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[Bug 10800] Reconsider form feed (U+000C) conformance

From: <bugzilla@jessica.w3.org>
Date: Thu, 30 Sep 2010 19:59:41 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1P1PI5-00079C-5l@jessica.w3.org>

Ian 'Hixie' Hickson <ian@hixie.ch> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |dbaron@dbaron.org,
                   |                            |eric@webkit.org,
                   |                            |ian@hixie.ch,
                   |                            |w3c@adambarth.com
         Resolution|                            |NEEDSINFO

--- Comment #2 from Ian 'Hixie' Hickson <ian@hixie.ch> 2010-09-30 19:59:40 UTC ---
The main reason this is allowed is that form feeds appear in documents such as

https://bugzilla.mozilla.org/show_bug.cgi?id=437915 suggests Mozilla already
does what the HTML spec says, though. I'm loathe to keep dragging implementors
back and forth on this. Furthermore, changing this would mean changing the
Gecko and WebKit HTML parsers, which treat U+000C like U+0020 in a whole bunch
of places.

We don't really gain anything by making U+000C illegal if we still let it
appear in the DOM (which we presumably would, as we do U+000B for example).

Furthermore, CSS syntactically agrees with the HTML spec here in terms of how
U+000C is handled (as whitespace). (I forget if that happened before HTML5 or
after, though.) It's not clear that it would be especially useful for U+000C to
collapse like U+0020 in 'white-space' handling, so I'm not really worried about

So in conclusion, I don't know that it's worth changing anything here.

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Status: Did Not Understand Request
Change Description: no spec change

Before changing anything here, we'd need at least Gecko and WebKit on board. I
know Henri would probably be happy to (finally, after years of trying to get me
to do this... sorry...) change Gecko accordingly, but can we get WebKit to
change the handling of U+000C everywhere? How about the CSS specs, would we be
able to get U+000C removed as syntactic whitespace there?

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Received on Thursday, 30 September 2010 19:59:42 UTC

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