W3C home > Mailing lists > Public > www-svg@w3.org > January 2006

SVG12: glyph language matching unnecessarily constrained

From: Bjoern Hoehrmann <derhoermi@gmx.net>
Date: Sun, 29 Jan 2006 21:53:20 +0100
To: www-svg@w3.org
Message-ID: <tpaqt1dslb52rpkkpefl4u0d0qft1ulumg@hive.bjoern.hoehrmann.de>

Dear Scalable Vector Graphics Working Group,

  http://www.w3.org/TR/2005/WD-SVGMobile12-20051207/fonts.html defines
the lang attribute as

  The attribute value is a comma-separated list of language tags as
  defined in IETF Best Current Practice 47 [BCP 47]. The glyph can be
  used if the xml:lang attribute exactly matches one of the languages
  given in the value of this parameter, or if the xml:lang attribute
  exactly equals a prefix of one of the languages given in the value of
  this parameter such that the first tag character following the prefix
  is "-". If the attribute is not specified, then the glyph can be used
  in all languages.

This seems to imply that implementations MUST NOT use the glyph if there
is a language mismatch. Please change the draft such that it is clear
whether this is intended. If it is, I think the draft should be changed
such that the lang attribute is rather a hint, at least in cases where
the font includes a specific glyph the implementation needs to render a
text but the languages mismatch, implementations should be free to
optimise behavior e.g. to avoid rendering missing glyph glyphs instead.

Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon: +49(0)621/4309674 · http://www.bjoernsworld.de
68309 Mannheim · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/ 
Received on Sunday, 29 January 2006 20:52:30 UTC

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