Add post type classes to internal link search results

[guidod]

Would be useful to have post-type classes (and maybe others, like post-status or whether the post type is hierarchical or not) in the internal link search results of the post editor. Currently the output looks like this:

<li class="alternate selected"><input type="hidden" class="item-permalink" value="http://example.com/"><span class="item-title">Example</span><span class="item-info">Page</span></li>

I believe there is no hook that would allow one to add post type classes to this output, (I know about the wp_link_query filter that can change the query results, but it can't add classes to the LI).

(Use case: adding custom color indentations or other styles to distinguish important post types from non-important post types in these results).

[pento]

Thank you for the suggestion!

Given that development of the editor has move to the block editor, I don't expect we'll implement this at any point.