dmsnell f957219299 HTML API: Only stop on full matches for requested tag name.
An optimization pass on the HTML API left a bug in the `matches()`
method, whereby it would falsely detect a tag name match if the
found tag were a lexical subset of the requested tag. This occurred
because of the use of `substr_compare()` without checking that the
outer lengths matched.

This patch resolves the bug by adding the length check.

Developed in https://github.com/wordpress/wordpress-develop/pull/7189
Discussed in https://core.trac.wordpress.org/ticket/61545

Follow-up to [58613].
Props dmsnell, westonruter.
See #61545.

Built from https://develop.svn.wordpress.org/trunk@58893


git-svn-id: http://core.svn.wordpress.org/trunk@58289 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2024-08-13 22:14:16 +00:00
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