ISSUE-429: Glyph vs code point in HRM [TTML IMSC 1.0] from Timed Text Working Group Issue Tracker on 2015-09-21 (public-tt@w3.org from September 2015)

From: Timed Text Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Mon, 21 Sep 2015 18:20:48 +0000
To: public-tt@w3.org
Message-Id: <E1Ze5ho-000AC7-4k@maia.w3.org>

ISSUE-429: Glyph vs code point in HRM [TTML IMSC 1.0]

http://www.w3.org/AudioVideo/TT/tracker/issues/429

Raised by: Glenn Adams
On product: TTML IMSC 1.0

The statement "Gr and Gc shall include only glyphs in presented regions and shall not include a [UNICODE] Code Point if it does not result in a change to presentation, e.g. the Code Point is ignored." is rather unusual in that it erroneously refers to glyphs in terms of a Unicode Code Point. Glyphs and glyphs codes are not directly related to Unicode code points. It would be better to say that a glyph that does not contain any renderable outline is ignored. But that is rather redundant since font designers do not include glyphs in fonts that do not have a renderable outline.

Received on Monday, 21 September 2015 18:20:50 UTC