bug#27517: 26.0.50; 25.2.2; Cannot add "help-echo" property to buffer regions in *lisp-mode

[Lars Ingebrigtsen]

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

> There is sadly no easy way to do that currently.
> You can do things like:
> - Use an overlay instead of a text-property.
> - Apply the text-property via `font-lock-add-keywords` rather than directly.

Hm, yes...

> - Add support for "multiple planes" in text-properties.  This means that
>   font-lock would use its own "plane" and your package could use another
>   plane, and the two would be correctly merged and font-lock wouldn't
>   erase your properties.

Oh, yeah!  I'd totally forgotten -- that would indeed be the long term
fix for these issues.  I think there's an issue for that somewhere in
here...

In any case, I'm closing this report, because it's basically "working as
designed" (until we get a new design).

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