Re: Elisp manual omission?

[Luc Teirlinck]

Nick Roberts wrote:

    > 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.

Note that the file emacs-xtra is available to document things that are
too specialized (probably a better name than "obscure") for the Elisp
(or Emacs) manual and too small to have their own manual.

The chapter should point out that it is intended for Elisp programmers.
See `(emacs-xtra)Introduction' for details.

The Elisp manual could contain an xref to the chapter, in an
appropriate place.

Sincerely,

Luc.