Integrate with Text mode and Custom HTML block in Gutenberg editor

[westonruter]

See WordPress/gutenberg#1733

[westonruter]

Let's de-prioritize this for now.

[arniebradfo]

Maybe I could help out on this when you reprioritize it.

I maintain a plugin called the HTML Editor Syntax Highlighter. I've written a custom Codemirror syntax mode that highlights everything in the post/page text editor:

• htmlmixed:
  • html
  • css
  • js
• shortcodes [squarebrackets/] syntax
• WP specific things:
  • <!--more-->
  • <!--nextpage-->
  • etc...

Adding this to WP-core for the Gutenberg editor would be awesome!

[westonruter]

@arniebradfo hi! I can see that I actually reached out to you yesterday on the support forum on this topic: https://wordpress.org/support/topic/html-editor-syntax-highlighter-codemirror-being-added-to-core-in-4-9/

I agree, extending the htmlmixed mode with support for highlighting shortcodes and WordPress-specific comments would be really useful in WordPress, even though the post editor isn't a current target for integrating CodeMirror 4.9. It would still be useful now for when that happens, and it would be useful in the short term for a Gutenberg integration.

Also, CodeMirror should be integrated with the Custom HTML block in Gutenberg, so that's another thing that would be in scope here.

Your insights and experience are appreciated!