src/third_party/web_platform_tests/webvtt/webvtt-file-format-parsing/webvtt-file-parsing/support/space-chars.vtt

WEBVTT

spaces
   00:00:00.000    -->  00:00:01.000 
{"id":"spaces"}

tabs
			00:00:00.000				-->		00:00:01.000	
{"id":"tabs"}

form feed
00:00:00.000-->00:00:01.000
{"id":"form feed"}

vertical tab
00:00:00.000-->00:00:01.000
"FAIL"