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[6.7 Branch] HTML API: Ensure that full processor can seek to earlier bookmarks. #8172

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@westonruter westonruter commented Jan 22, 2025

This PR is cherry-picking r59391 into the 6.7 branch.

Trac ticket: https://core.trac.wordpress.org/ticket/62290


This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

When the HTML Processor seeks to an earlier place, it returns the the beginning of the document and proceeds forward until it reaches the appropriate location. This requires resetting internal state so that the processor can correctly proceed from the beginning of the document.

The seeking reset logic was not adapted to account for the full processor (i.e. when created via `WP_HTML_Processor::create_full_parser()`). This change updates the seek logic to account for the full and fragment parsers as well as other state that has been introduced in the interim and should be reset.

Props jonsurrell, dmsnell, westonruter, mi5t4n.
Fixes #62290.

git-svn-id: https://develop.svn.wordpress.org/trunk@59391 602fd350-edb4-49c9-b593-d223f7449a82
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Props bernhard-reiter.

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