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[ttml1] Handling of LWSP in tts:fontFamily

From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
Date: Thu, 25 May 2017 15:19:27 +0000
To: public-tt@w3.org
Message-ID: <issues.opened-231370275-1495725566-sysbot+gh@w3.org>
nigelmegitt has just created a new issue for https://github.com/w3c/ttml1:

== Handling of LWSP in tts:fontFamily ==
See w3c/imsc#221 and w3c/ttml2#315 for background.

Whether or not LWSP is permitted around comma delimiters in `tts:fontFamily` is ambiguous. There is evidence that some documents include such spaces, whereas some processors may not accept them. For example one test case (fontFamily009.ttml) in the TTML1 test suite includes such spaces.

Proposed resolutions:

1. Prohibit LWSP in document instances but note that processors should be tolerant of them due to existing content that may include them.
2. Permit LWSP in document instances but note that some existing processors may not be tolerant of them.

Please view or discuss this issue at https://github.com/w3c/ttml1/issues/248 using your GitHub account
Received on Thursday, 25 May 2017 15:19:34 UTC

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