See https://twitter.com/FakeUnicode/status/800808929554857984 There should be no red. :-) This was changed in WHATWG HTML some time ago and implemented by Mike Smith in the Validator.nu HTML parser: https://github.com/whatwg/html/issues/1351 https://github.com/validator/validator/commit/8c02230f0d9cc2d67015d5a7a6807843a0512704 https://github.com/validator/validator/commit/0c326a3a43cde16443aafa127078a836adf9e3a7 https://github.com/validator/validator/commit/3f553406c97d3c6cd4392a029c6d8b822c5e2ec1 https://github.com/validator/validator/commit/cd2aaa74e07c0fdbea9b5f1483568428eef578ad https://github.com/validator/validator/commit/fd36bc6dd44902bc57228cbb0810cf40563f09b3 https://github.com/whatwg/html/pull/1356#issuecomment-222793570 has test cases.
Henri, can you take a look here?
Priority: -- → P3
I'll take a look. Keeping myself needinfoed to keep this visible.
Assignee: nobody → hsivonen
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