I'm currently maintaining a custom PEGjs grammar along with a custom CodeMirror mode for syntax highlighting and autocomplete. This would be a dream if happene

I'm currently maintaining a custom PEGjs grammar along with a custom CodeMirror mode for syntax highlighting and autocomplete. This would be a dream if happened (with PEGjs and CodeMirror instead of Jison and ACE), but it is probably too difficult. I think it is easier to write a new Javascript text editor which bases itself on PEGjs.