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Update HTTMLPurifier to support HTML5
Verify that the values that we have in the ACP are still in line with the values that are supported by HTMLPurifier in its latest version.
OK, so I thought that we didn't have HTML5 support in our library because we were behind in what HTMLPurifier could offer, but it turns out that the vanilla HTMLPurifier does not officially support HTML5.
I found this : https://github.com/xemlock/htmlpurifier-html5, which offers a HTML5-compatible HTMLPurifier.
We will have to adapt our declaration of the HTMLPurifier library to match this new one, should we decide to use it.
This might even be a good improvement for the 1.3 branch, given that HTML5 isn't that novel anymore and widely usd :-)
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This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or assign sombody or this will be closed in 5 days.
This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or assign sombody or this will be closed in 5 days.
ezyang's HTMLPurifier library does include another library to extend coverage to HTML5 tags - see libraries/htmlpurifier/standalone/Lexer/PH5P.php. The 4.15.0 version has PHP8.1 fixes in this file.
