bug#27982: 25.1.50; expand-file-name docstring on how to traverse the filesystem

[Eli Zaretskii]

> From: Nicolas Richard <youngfrog@members.fsf.org>
> Cc: 27982@debbugs.gnu.org
> Date: Wed, 23 Aug 2017 21:18:53 +0200
> 
> Ok so now I'm saying that, with the suggestion in the docstring, output
> will be different if "dirname" ends in a slash.

Of course.  directory-file-name and file-name-directory look at the
slashes, so having one more slash at the end changes everything.
There's nothing new here.

So where do we go from here, in the context of this bug report?  What
would you propose to change, where, and why?

Thanks.