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[Bug 12400] Inconsistent treatment of combining characters beginning text run

From: <bugzilla@jessica.w3.org>
Date: Wed, 26 Jun 2013 18:11:28 +0000
To: www-validator-cvs@w3.org
Message-ID: <bug-12400-169-KOp19uCjYl@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=12400

Michael[tm] Smith <mike@w3.org> changed:

           What    |Removed                     |Added
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                 CC|                            |hsivonen@iki.fi

--- Comment #3 from Michael[tm] Smith <mike@w3.org> ---
(In reply to comment #2)
> discussed in bug 13502, where it was concluded that both the use case (a
> combined character with separate styling for the separate parts) and the
> implementation (a text run starting with a combining character) are valid;
> further, they have always been valid.
> 
> According https://www.w3.org/Bugs/Public/show_bug.cgi?id=13502#c6), the
> validator's behavior is intentional and implements charmod-norm; according
> to the later discussion, charmod-norm does not apply to HTML. No change to
> the visible HTML spec was needed to fix this (charmod-norm was never
> referenced in the first place), but a comment to this effect was added
> to the document source.
> 
> So -- in the first case, where text runs do begin with combining characters,
> the validator's behavior is not conforming to the HTML5 spec or any
> normative reference.

CCing Henri Sivonen, who's way more familiar with this than me...

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