Enumerated values in selectors are case sensitive

[Wilto]

Enumerated values like type are specced as being case insensitive, while all other attribute values are case sensitive—Sizzle is currently case sensitive across the board.

Further discussion at ​https://github.com/jquery/jquery-mobile/issues/4860

[mikesherov]

Here's a fiddle from gnarf: ​http://jsfiddle.net/QMweQ/2/

[mikesherov]

Here's a fiddle from the Mobile bug report: ​http://jsfiddle.net/thayes/SQyXc/1/

[dmethvin]

This will end up being ported into Sizzle's issue tracker. Browsers don't seem to expose a way to determine whether the attribute is enumerated. I vaguely thought there was something on an attributeNode but I was thinking of .specified. So it seems we'd either need a hard-coded list of the affected attributes or a feature test of some kind where we could cache the outcome.

Ref:

​http://www.whatwg.org/specs/web-apps/current-work/#keywords-and-enumerated-attributes

[timmywil]

This is already an issue in Sizzle: ​https://github.com/jquery/sizzle/issues/122. However, it's not labeled high priority as the fix requires a good amount of bytes.