Dennis Snell db30ce9c8c HTML API: Add missing tags in IN BODY insertion mode to HTML Processor.
As part of work to add more spec support to the HTML API, this patch adds
support for the remaining missing tags in the IN BODY insertion mode. Not
all of the added tags are supported, because in some cases they reset the
insertion mode and are reprocessed where they will be rejected.

This patch also improves the support of `get_modifiable_text()`, removing
a leading newline inside a LISTING, PRE, or TEXTAREA element.

Developed in https://github.com/WordPress/wordpress-develop/pull/6972
Discussed in https://core.trac.wordpress.org/ticket/61576

Props dmsnell, jonsurrell, westonruter.
See #61576.


git-svn-id: https://develop.svn.wordpress.org/trunk@58779 602fd350-edb4-49c9-b593-d223f7449a82
2024-07-22 22:22:03 +00:00
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