Re: Elisp manual omission?

[Nick Roberts]

 >     > Why do you think those are worth documenting?
 > 
 >     I tried to imagine what would I like to know if I needed to write a
 >     mode with special tooltip support, similar to GUD (whose tooltip
 >     support is part of tooltip.el).
 > 
 > I think that how to write special tooltip support is too obscure a
 > topic to be worth documenting in the Emacs Lisp Manual.

I disagree. I think this could be a good idea.

It could just point to a few things that would be needed:

A minor mode:                          tooltip-mode         gud-tooltip-mode
A function to add to tooltip-hook:     tooltip-help-tips    gud-tooltip-tips

It could say that tooltip-mode uses text-properties while gud-tooltip-mode
uses track-mouse etc.

I could imagine other modes like gud-tooltip-mode e.g to display lisp variable
values with edebug.

Nick