1343794 - [webvtt] parsing of setting line:5. with trailing dot should be invalid

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Simon Pieters [:zcorpan]]

http://zcorpan.github.io/live-webvtt-viewer/#vtt=WEBVTT%0A%0A00%3A00%3A00.000+--%3E+00%3A00%3A10.000+line%3A5.%0AHello+world.%0A

WEBVTT

00:00:00.000 --> 00:00:10.000 line:5.
Hello world.


The "line:5." setting should be ignored, but is applied in Gecko.

Spec:
[[
If there is a U+002E DOT character (.) and the character before or the character after is not an ASCII digit, or if the U+002E DOT character (.) is the first or the last character, then jump to the step labeled next setting.
]]
http://w3c.github.io/webvtt/#parse-the-webvtt-cue-settings

web-platform-test:
/webvtt/parsing/file-parsing/tests/settings-line.html
updated in https://github.com/w3c/web-platform-tests/pull/5032