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[css3-fonts] font selection for Unicode Variation Selector

From: Koji Ishii <kojiishi@gluesoft.co.jp>
Date: Mon, 21 Feb 2011 00:15:46 -0500
To: "www-style@w3.org" <www-style@w3.org>
Message-ID: <A592E245B36A8949BDB0A302B375FB4E0AB201D2EF@MAILR001.mail.lan>
When source text contains Unicode Variation Selector[1][2][3], how does that affect font choice for the code point?

Here's an example. With the following style:
  font-family: A B;
and let's say both fonts contains the glyph for U+8FBA, but only font B contains VS1 of U+8FBA.

For the source text of U+8FBA VS1, should font A be used to render it, or B?

I assume font B, as font A does not contain the glyph the author specified and ignores VS1, but I'd appreciate clarification since Variation Selector can behave differently from the regular code point for font fallback.


[1] Section 15.6, Variation Selectors of The Unicode Standard, Version 5.1.0 <http://www.unicode.org/versions/Unicode5.1.0>
[2] http://unicode.org/reports/tr37/
[3] http://www.unicode.org/ivd/
Received on Monday, 21 February 2011 05:15:40 UTC

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