ISSUE-407: Excluding #bidi and #direction on image profile is inconsistent

Excluding #bidi and #direction on image profile is inconsistent

State:
CLOSED
Product:
TTML IMSC 1.0
Raised by:
Glenn Adams
Opened on:
2015-09-03
Description:
excluding #bidi and #direction on image profile is inconsistent, since #bidi includes #direction, #unicodeBidi and #writingMode-horizontal; better to exclude #direction and #unicodeBidi, but retain #writingMode-horizontal with lrtb or lr values;
Related Actions Items:
No related actions
Related emails:
  1. {minutes} TTWG Meeting 2015-10-15 (from nigel.megitt@bbc.co.uk on 2015-10-15)
  2. {agenda} TTWG Meeting 2015-10-15 (from nigel.megitt@bbc.co.uk on 2015-10-14)
  3. RE: {agenda} TTWG Meeting 2015-10-08 (from mdolan@newtbt.com on 2015-10-08)
  4. {agenda} TTWG Meeting 2015-10-08 (from nigel.megitt@bbc.co.uk on 2015-10-07)
  5. {agenda} TTWG Meeting 2015-10-01 (from nigel.megitt@bbc.co.uk on 2015-10-01)
  6. {agenda} TTWG Meeting 2015-09-24 (from nigel.megitt@bbc.co.uk on 2015-09-23)
  7. {meeting} TTWG Meeting 2015-09-03 (from nigel.megitt@bbc.co.uk on 2015-09-03)
  8. {agenda} TTWG Meeting 2015-09-03 (from nigel.megitt@bbc.co.uk on 2015-09-03)
  9. ISSUE-407: Excluding #bidi and #direction on image profile is inconsistent [TTML IMSC 1.0] (from sysbot+tracker@w3.org on 2015-09-03)

Related notes:

TTML1 states:

"""
A TTML processor supports the #bidi feature if it supports the following features:

#direction
#unicodeBidi
#writingMode-horizontal
"""

So #bidi cannot be used as soon as one of its dependent features, e.g. #direction, is not supported, right?

Pierre-Anthony Lemieux, 21 Sep 2015, 15:58:00

See related ISSUE-417

Pierre-Anthony Lemieux, 21 Sep 2015, 17:04:13

Addressed at https://dvcs.w3.org/hg/ttml/rev/6008e9f4b4bf

#bidi is now described as "Not applicable since some, but not all, implied features are permitted" in the image profile and as "May be used" in the text profile.

#unicodeBidi is described as "Shall not be used" in the image profile.

Pierre-Anthony Lemieux, 8 Oct 2015, 01:48:15

[nigel]: [meeting 2015-10-15] Propose new text: "See implied features: some are prohibited, others are permitted"

15 Oct 2015, 15:19:53

Addressed at https://dvcs.w3.org/hg/ttml/rev/c6798894c4b8

Pierre-Anthony Lemieux, 15 Oct 2015, 15:25:56

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David Singer <singer@apple.com>, Nigel Megitt <nigel.megitt@bbc.co.uk>, Chairs, Thierry Michel <tmichel@w3.org>, Philippe Le H├ęgaret <plh@w3.org>, Atsushi Shimono <atsushi@w3.org>, Staff Contacts
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