[ttml2] Pull Request: Clarify undefined semantics for text combine in ruby text (#978).

skynavga has just submitted a new pull request for https://github.com/w3c/ttml2:

== Clarify undefined semantics for text combine in ruby text (#978). ==
Closes #978.

See https://github.com/w3c/ttml2/pull/1171

Received on Friday, 4 October 2019 01:14:25 UTC