bug#1092: compilation-goto-error goes to wrong location when buffer has hidden regions

[Eli Zaretskii]

> From: Stefan Monnier <monnier@IRO.UMontreal.CA>
> Cc: ahyatt@gmail.com, 1092@debbugs.gnu.org
> Date: Tue, 05 Jan 2016 12:12:51 -0500
> 
> The code you changed fixed just one of hundreds of similar cases all
> over the Elisp code base.  Basically any use of forward-line,
> beginning-of-line, line-end-position, ... needs to be adjusted to
> account for selective-display=t.
> 
> This need to change every package to accommodate the possible use of
> selective-display=t is one of the main reasons why we don't want to
> support it any more, i.e. why we want to declare it obsolete.

I didn't say we should fix all of the potential bugs, only those which
were reported, i.e. those which actually bother someone.