Attribute Starts With Selector and Attribute Contains Selector does not work with escaped meta-characters in find()

[rockitbaby]

The Attribute Starts With Selector [name^{=value] and Attribute Contains Selector [name*=value] does not return any elements when used in the find() function and the value contains escaped meta-characters.}

$('a[href^=\\#]').size() != $('body').find('a[href^=\\#]').size();

Test file is attached.

[nathank]

I have found the same problem. I need a fix for this ASAP. Thanks.

[snover]

Resetting milestone to future.

[snover]

Duplicate of #6093.