bug#47625: closed (28.0.50; dired-do-symlink creates invalid symlinks when using Tramp)

[GNU bug Tracking System]

Your message dated Thu, 06 May 2021 13:15:29 +0200
with message-id <87mtt83yge.fsf@gmx.de>
and subject line Re: bug#47625: 28.0.50; dired-do-symlink creates invalid 
symlinks when using Tramp
has caused the debbugs.gnu.org bug report #47625,
regarding 28.0.50; dired-do-symlink creates invalid symlinks when using Tramp
to be marked as done.

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-- 
47625: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47625
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> --- Begin Message ---
>
>
>
> Subject: 
>
> 28.0.50; dired-do-symlink creates invalid symlinks when using Tramp
>
>
>
>
> Date: 
>
> Tue, 06 Apr 2021 23:29:39 +0300
>
>
>
>
> emacs -Q
> open dired at /sudo::/tmp/
> M-! touch foo
> S (dired-do-symlink) on foo, enter /tmp/bar (without tramp prefix) at the prompt
> g (refresh dired)
>
> The result is "bar -> /sudo:root@fgunbin.local:/tmp/foo", which is
> an invalid symlink.
>
>
> In GNU Emacs 28.0.50 (build 8, x86_64-apple-darwin20.3.0, NS appkit-2022.30 
> Version 11.2.1 (Build 20D74))
>  of 2021-04-05 built on fgunbin.local
> Repository revision: 257caab1d0bea17fb9bfb5a9e2c782cf96a7d052
> Repository branch: master
> System Description:  macOS 11.2.3
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#47625: 28.0.50; dired-do-symlink creates invalid symlinks when using Tramp
>
>
>
>
> Date: 
>
> Thu, 06 May 2021 13:15:29 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)
>
>
>
>
> Version: 28.1
>
> Lars Ingebrigtsen <larsi@gnus.org> writes:
>
> Hi,
>
> > Filipp Gunbin <fgunbin@fastmail.fm> writes:
> >
> >> emacs -Q
> >> open dired at /sudo::/tmp/
> >> M-! touch foo
> >> S (dired-do-symlink) on foo, enter /tmp/bar (without tramp prefix) at
> >> the prompt
> >> g (refresh dired)
> >>
> >> The result is "bar -> /sudo:root@fgunbin.local:/tmp/foo", which is
> >> an invalid symlink.
> >
> > I can reproduce this bug in Emacs 28, but I haven't tried to debug it.
> > Perhaps it's obvious what's going wrong to somebody who knows how Tramp
> > works; Michael added to the CCs.
>
> Oops, I've overlooked this when it arrived. Sorry.
>
> Same here, I can reproduce it. Surprisingly, it isn't a Tramp error,
> because Tramp isn't involved :-)
>
> The scenario described above results in the call
>
> (make-symbolic-link "/sudo:root@server:/tmp/foo" "/tmp/bar" nil)
>
> Tramp would be involved if either
>
> - LINKNAME is a relative file name, and default-directory is remote, or
> - LINKNAME is a remote file name.
>
> LINKNAME is "/tmp/bar", and both conditions do not apply.
>
> "/sudo:root@gandalf:/tmp/foo", the TARGET of the call, must only be a
> string. Which syntax it is, or whether it is a valid file name, doesn't
> matter.
>
> So I fixed it in dired. If you try to create a symlink between two files
> on different hosts, you'll get an error now.
>
> Closing the bug.
>
> Best regards, Michael.
>
>
> --- End Message ---