Please see our policy, you must provide a description about a task, nobody known improve what, and which validation

Yes, I agree, but may expand this feature to any type of page, at least add a field allowPreviewWhenProtected in namespace def

在T388022#11485299中，@Pppery写道：

This task is requesting the original problem be fixed. I have no idea what you are trying to say.

在T388022#11485297中，@Pppery写道：

The homepage of the testing instance acknowledges the existence of this bug. That doesn't change the fact that the bug exists or make it an intended feature.

What? See the homepage of testing instance, we already made a form for request account

Actually used manual approving, we should close this task.

在T413511#11485279中，@Pppery写道：

These projects are for bugs in MediaWiki core functionality only.

@Tacsipacsi do you mean add a ISyntaxHighlightingProvider or other interface like it?

Oh, in 1.39.15, is AutoloadClasses, not AutoloadedClasses, my god

Also, in the PHP includes tab of Debug Toolbar, no any file of my extension in it.

Agree, after Echo merged into core, I agree merge syntax highlight to core.

I have opposite view, at most users just want to make a tag without attribute