Hi,
Let me first just say that I love Sigil, and that I'm not writing this to complain. I think it's the best ePub editor.
Lately, I've been using
Bluefish Editor for other projects, and I like how easy and quick it is to write code with Bluefish, mainly because of the
auto-completition,
auto-tag-closing, and
highlighting matching features.
I think Sigil users would benefit from these features. I often find myself checking CSS reference on the web and it can be time consuming.
Anyway, just some food for thought ...
Here are 3 pictures of how it looks in action:
CSS:
XHTML
Highlighting matching: