In developing gnu-apl-mode, I have successively added more and more features that people seems to expect to exist in any language mode. My problem is that I'm a newbie at Emacs with only 20+ years of experience using it, so of course I don't know all things a lang-mode can do.
After thinking that my mode was pretty complete, I discovered things like imenu and speedbar which I had never used, but is actually pretty cool when support was added for it.
Is there a comprehensive documentation anywhere which details all features that such a mode can (should) implement?
Somehow, I feel that there are more features that I should support that I simply don't know about.
Regards,
Elias