bug#21934: 24.5; find-tag: reading TAGS file incorrectly

[Eli Zaretskii]

> From: Andreas Matthias <andreas.matthias@gmail.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  21934@debbugs.gnu.org
> Date: Sun, 22 Nov 2015 18:49:32 +0100
> 
> >> Can there be
> >> more than one of these in a token, and if so, what should etags do?
> >> IOW, if we have foo.bar.baz or foo:bar.baz etc., what should be the
> >> result?
> >
> > Just two, I think. foo.bar is not a function, and bar.baz probably won't be 
> > a
> > "symbol at point".
> >
> > So just the fully qualified tag name, and the local tag name ("baz").
> 
> Yes, that's reasonable.

I'm sorry: can I have a complete specification, please?  Given a
token that includes one or more of '.' and ':', how to determine the 2
tags that etags should produce?

TIA