bug#21391: 24.5; `thing-at-point' should return a string

[Eli Zaretskii]

> From: Tino Calancha <tino.calancha@gmail.com>
> Date: Fri, 11 Nov 2016 19:07:15 +0900 (JST)
> cc: Eli Zaretskii <eliz@gnu.org>, tino.calancha@gmail.com, 
>     21391@debbugs.gnu.org
> 
> > On 10.11.2016 21:59, Eli Zaretskii wrote:
> >
> >> Because currently they can call thing-at-point without defining
> >> foo-at-point.  AFAIU, you suggest to deny them this possibility, and
> >> force them to define foo-at-point for every foo.
> >
> > They'll really have to do that only for string-unrepresentable foos.
> >
> > Like currently (thing-at-point 'symbol) returns a string, whereas 
> > (symbol-at-point) returns an interned symbol. That's nothing new.
> Indeed, this sounds the right usage for me, and for an user who has 
> read the part of the manual refering to `thing-at-point'.

I disagree, sorry.