tdmalone on "[Plugin: TinyMCE Advanced] 'Keep paragraph tags' option breaks custom oembed providers"

Took me a bit to track this down, but I guess I should have heeded the 'it may behave unexpectedly in rare cases' waing ;)

It appears that when you add a custom oembed provider using wp_oembed_add_provider(), with the 'Keep paragraph tags' option on, TinyMCE will still wrap a custom embed provider URL in paragraph tags, which means WordPress won't pick it up to do the embed. It works fine when this option is not selected.

There is (sortof) a way around it, although I've only got it working in some cases - it's to add the following function which sends URLs still wrapped in <p></p> tags to WP's oembed callback:

add_filter("the_content", "mytheme_detect_wrapped_embeds", 11); // be sure it runs after wpautop on priority 10 function mytheme_detect_wrapped_embeds($content){ $content = preg_replace_callback( '|^<p>(s*)(https?://[^s"]+)(s*)</p>$|im', // URLs on their own line wrapped with <p></p> array($GLOBALS["wp_embed"], "autoembed_callback"), $content ); retu $content; }

I tracked down where the problem is - in this plugin under mcewptadvplugin.js, the oembeds are manually defined (as they also are in WP core). So, I'm not sure of an easy way around this... but is it possible perhaps to have a way to hook new regexes into this file when a new oembed provider is added?

https://wordpress.org/plugins/tinymce-advanced/