bug#47408: Etags support for Mercury [v0.5]

[Eli Zaretskii]

> From: Francesco Potortì <pot@gnu.org>
> Date: Tue, 08 Jun 2021 12:53:23 +0200
> Cc: 47408@debbugs.gnu.org,
>       fabrice nicol <fabrnicol@gmail.com>
> 
> > What do we lose if we make Mercury support active in ctags mode?  Do
> > we even need to add any code for that?
> 
> I just looked at the code.  Unless I am grossly mistaken, nothing is
> needed to get ctags output.  You just call the program as ctags and
> that's it.  So there is no reason to prevent ctags help from mentioning
> Mercurial.

Then how come, when I run the etags test suite (test/manual/etags/), I
get no change in the produced CTAGS file wrt CTAGS.good?  That .good
file is from before we added the Mercury source to the suite.  What am
I missing?