Hey Tony,
Thanks for the reminder to include a link to the plugin I'm referring to. I don't have that good habit yet.
The functionality of edit-comptext that I haven't been able to get to work is the autocompletion feature. For example, to link to another tiddler within my wiki, in edit-comptext I start typing [[ and a few characters and it pulls up a list of the tiddler titles that start with the characters that I type. I can then use the arrow keys to scroll through the list and pick the one I'm looking for. Since I have nearly 3,000 tiddlers, this is extremely helpful because I can't possibly remember the exact title of every tiddler. I know in the plugin that I have to select the editor type as comptext which is probably part of the problem.
When you refer to an editor toolbar button, are you refering to the plugin or CodeMirror? I don't see a toolbar button with the plugin.
Thanks,
Damon