bug#45443: 28.0.50; Can't find definition of compilation--message->loc

[Eli Zaretskii]

> From: Daniel Martín <mardani29@yahoo.es>
> Cc: Eli Zaretskii <eliz@gnu.org>,  rms@gnu.org,  45443@debbugs.gnu.org
> Date: Sun, 27 Dec 2020 01:51:29 +0100
> 
> One possible approach is, if the regular expression code fails to find a
> location, we can fall back to expand macros until we find the definition
> (a defalias in the case of a function, or a defvar in the case of a
> variable), or we reach the end of the file.

Why do we need to expand macros? isn't it enough to find the defstruct
itself, by looking for a partial match?