bug#33564: Incorrect path canonicalisation

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

> tags 33564 notabug
> thanks
>
>> Date: Sat, 1 Dec 2018 21:04:50 +0100
>> From: Mattias Andrée <maandree@kth.se>
>>
>>     cd
>>     mkdir -p 1/2
>>     cd 1/2
>>     echo 3 > ../../3
>>     ln -s ~ 4
>>     echo 5 > 5
>>     emacs 4/../5 # works, but shouldn't
>>     emacs 4/../$USER/3 # does not works, should
>
> This is by design: expand-file-name doesn't follow symlinks.  It's
> documented not to do that: see the doc string and the ELisp manual.
>
>> On Linux, the proper way to get the canonical path
>> for a file with the file descriptor $fd:
>
> expand-file-name doesn't aim at yielding the canonical file name in
> that sense.

This was tagged notabug in December 2018; I'm now also closing this bug report.

Thanks,
Stefan Kangas