Re: Tweaking the output of `C-h b'

[Lars Ingebrigtsen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> Yes, that'd be nice.  Perhaps with a user option to toggle between
>> classic "..." outlining and triangles?
>
> I don't see we can't have both,

Why not indeed.

Looking at outline-minor-mode, it just uses the standard Emacs
invisibility thing, so it just applies text properties without altering
the text of the buffer, which is nice.  What's the best way to add some
buttons, then?  Zero-length overlays with display/local-map properties
at the start of the line?  No, doesn't seem to work...

An overlay covering the first character, and then repeating the first
char as the last element in the display property?  Yes, that's seems to
work.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no