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Re: [css3-writing-modes] character orientation and text-combine-horizontal (was: [css3-writing-modes] i18n-ISSUE-275: Digit 1)

From: John Daggett <jdaggett@mozilla.com>
Date: Tue, 6 Aug 2013 01:15:25 -0700 (PDT)
To: www-style@w3.org
Cc: WWW International <www-international@w3.org>
Message-ID: <1096560380.1441433.1375776925278.JavaMail.zimbra@mozilla.com>

Koji Ishii wrote:

> The spec says:
> 
> # When combining text as for Œtext-combine-horizontal: all¹, the glyphs
> # of the combined text are composed horizontally (ignoring
> # Œletter-spacing¹ and any forced line breaks, but using the specified
> # font settings), similar to the contents of an inline-box with a
> # horizontal writing mode and a line-height of 1em.
> 
> And text-orientation says:
> 
> # Current values only have an effect in vertical writing modes; the
> # property has no effect on elements in horizontal writing modes.
> 
> So glyphs should appear in upright.
> 
> Do you think we need to add more clarification?

Yes. The spec says how they are *composed* but doesn't indicate the
orientation of the resulting formation.  From an authoring model point
of view, the resulting composition becomes an upright glyph within a
vertical run.  It should remain that way independent of the value of
the 'text-orientation' property.  I guess you could define it by
saying that tatechuyoko runs are some mini horizontal writing submode
but I think it's simpler just to say it's upright and the value of
text-orientation doesn't affect it's orientation.

Funky smart quotes by the way, nice effect!

Cheers,

John Daggett
Received on Tuesday, 6 August 2013 08:15:55 UTC

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