Bug 398339 – sys-apps/coreutils-8.15: realpath --relative-to behaves strangely for "/" path

• Status: RESOLVED UPSTREAM
• Product: Gentoo Linux

[Description Ulrich Müller 2012-01-10 09:01:48 UTC]

realpath with option --relative-to behaves strangely if one of the paths is "/".

$ realpath --relative-to=/ /usr
../usr

Expected Results:
It should return just "usr". Especially, ../usr will fail if it is subsequently  used with some nontrivial ${ROOT}.

$ realpath --relative-to=/usr /
../
$ realpath --relative-to=/usr/bin /usr
..

Expected Results:
It should behave consistently, i.e. always return ".." without the trailing slash.

$ realpath --version
realpath (GNU coreutils) 8.15
Packaged by Gentoo (8.15 (p1))

[Comment 1 SpanKY 2012-01-10 20:38:06 UTC]

since this is new functionality, and i'd be hard pressed to say a bug that actually breaks anything, i'm inclined to mark UPSTREAM and let things progress naturally that way

you ok with that ?

[Comment 2 Ulrich Müller 2012-01-10 21:40:10 UTC]

(In reply to comment #1)
> you ok with that ?

Yes.

One thing that I've noticed in your report upstream:

> as does these:
>         realpath --relative-to=/ /usr
>         realpath --relative-to=/ /usr/
> which is to say, they show:
>         ..

Both of these output "../usr" for me. (But ".." is wrong too, correct would be "usr".)

[Comment 3 SpanKY 2012-01-10 21:53:52 UTC]

thanks ... i've followed up in my report with that info