I just created an extension that embeds the Bespin editor from Mozilla
into Radiant. Bespin is a full featured code editor with syntax
highlighting, indentation support, etc...
You can see a screenshot of Bespin in action here:
script/extension install bespin_editor
This version of the extension has only been tested on edge, it will
probably NOT WORK with earlier versions of Radiant.
Try it out and let me know what you think. Patches and pull requests
Radiant mailing list