Use ACE Code Editor for Theme and Plugin editors

[wonderboymusic]

Ace is an embeddable code editor written in JavaScript. It's the code editor used on GitHub and is actively developed by Mozilla. Its license is Modified BSD which is compatible with GPL.

The plugin and theme editors in their current state are lame. Upgrading the experience with ACE could lead to a more robust file editing solution in the admin. Perhaps, ability to add files?

Here's the link to the project:
​http://ace.ajax.org/

[wonderboymusic]

Drop me in wp-includes/js

[johnbillion]

Previously: #12423 and #13307.

[wonderboymusic]

Yikes - I completely missed those. If the editors are going to exist, they need a library like this. I guess we'll see what everyone says (again)

[rmccue]

I ​made a Markdown post editor as a proof of concept using ​CodeMirror. I found that CodeMirror had better browser support and it tends to be more stable. There's some discussion about it on ​Hacker News.

I don't have a preference personally; I went with CM because it's more lightweight. It also seemed to have a better API IMO.

I'm +1 on this.

[alexvorn2]

If such thing goes in that it would be great to see a html editor for Text area of wp_editor.

[SergeyBiryukov]

#31418 was marked as a duplicate.

[DrewAPicture]

No movement here in 3 years, plus this is really a duplicate of #12423 anyway.