bug#31272: 25.3; Directory with weird name cannot be opened via SFTP

[Michael Albinus <michael.albinus@gmx.de>]

Eli Zaretskii <eliz@gnu.org> writes:

Hi,

>> Thanks for providing the link. In 26.1 RC1, the problem still
>> exists. However, it's different from how I described it at first. I
>> only discovered this after running my installed version of Emacs with
>> -Q after I checked whether the bug exists in 26.1 RC1 for which I
>> used -Q.
>
> OK, thanks.  Can you try any other methods supported by Tramp to
> display that directory in Dired, and if so, do they all exhibit the
> same behavior?
>
> Michael, could you please look into this issue?

I've started already yesterday evening with analysis. First of all, I
can reproduce the problem, that's why I haven't asked for further
information.

The problem exists with the ssh method for Emacs 25.2, 26.1 and 27.0.70.

With sftp, the situation is different. The problem can be reproduced
with Emacs 25.2. With Emacs 26.1 and 27.0.50, the dired buffer shows a
question mark instead of the nonprintable character, but I could enter
the directory with this name, and I could open a file there. So it might
be a workaround to use Emacs 26.1 with sftp for the time being.

I will continue with the analysis.

Best regards, Michael.