Re: ISSUE-284: value of lineHeight [TTML2]

Given that the 120% only lived in an editor's draft, and only for 12 days
(from Aug 23 to Sep 04) [1][2], I completely discount implementations that
want to lock in that behavior. IMO, they should simply change to 125%.

TTML2 was already changed to make this normative on Sep 4 [3].

[1] https://dvcs.w3.org/hg/ttml/rev/15f347a0d2ef
[2] https://dvcs.w3.org/hg/ttml/rev/11d2d5dcb5a1
[3] https://dvcs.w3.org/hg/ttml/rev/0cc9f1196066


On Fri, Oct 11, 2013 at 9:11 AM, Timed Text Working Group Issue Tracker <
sysbot+tracker@w3.org> wrote:

> ISSUE-284: value of lineHeight [TTML2]
>
> http://www.w3.org/AudioVideo/TT/tracker/issues/284
>
> Raised by: Mike Dolan
> On product: TTML2
>
> TTML1SE added a non-normative recommendation for lineHeight:  8.2.12:
> "Note: It is recommended that presentation processors use a computed line
> height that is 125% of the size of the largest applicable font size when
> the value normal is specified. The choice of 125% allows use of a font size
> of 0.8c in order to obtain a line height of 1c."
>
> However, the WG had previously agreed to 120% which was codified in an
> editor's draft after closing ISSUE-275. The issue includes the rationale.
> The Note was a last minute change for the reason stated in the last
> sentence in the note.
>
> Implementations had been developed to roughly 120% which was re-enforced
> by the editor's draft text.
>
> This recommendation should be revisited and normative provisions added to
> TTML2.
>
> This is also related to ISSUE-283.
>
>
>
>
>