GNU bug report logs - #48349
28.0.50; Problem in dired with symbolic links to Tramp-syntax files

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; Problem in dired with symbolic links to Tramp-syntax files
Date: Tue, 11 May 2021 15:22:59 +0200

Apparently dired passes symlinks to Tramp in unfortunate ways.

For instance:

(cd /tmp; ln -s /sudo:root <at> localhost:/tmp/foo bar)
emacs -Q /tmp/

will infloop asking for a password -- `C-g' will break, but it'll just
ask again apparently forever, and you have to kill Emacs to get out of
the loop.

(cd /tmp; ln -s /sudo:root <at> nosuchhost:/tmp/foo bar)
emacs -Q /tmp/

won't even give you a prompt, but won't display anything -- hanging
while resolving the "nosuchhost" name?

I haven't tried to debug either case.


In GNU Emacs 28.0.50 (build 71, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2021-05-10 built on xo
Repository revision: aa354dd55b213b86ee8e3aa0365a6ad915838458
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12010000
System Description: Debian GNU/Linux bullseye/sid

Configured using:
 'configure --with-native-compilation'

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #8 received at 48349 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 48349 <at> debbugs.gnu.org
Subject: Re: bug#48349: 28.0.50; Problem in dired with symbolic links to
 Tramp-syntax files
Date: Wed, 12 May 2021 20:16:58 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

Hi Lars,

> Apparently dired passes symlinks to Tramp in unfortunate ways.
>
> For instance:
>
> (cd /tmp; ln -s /sudo:root <at> localhost:/tmp/foo bar)
> emacs -Q /tmp/
>
> will infloop asking for a password -- `C-g' will break, but it'll just
> ask again apparently forever, and you have to kill Emacs to get out of
> the loop.
>
> I haven't tried to debug either case.

This is a collateral damage of 824d1a57ec8e7c90b01af6665de5a114529170df
in function file-name-non-special. Brrrr :-(

I will try to see how to fix this, w/o loosing the solution for bug#48177.

Best regards, Michael.

Message #13 received at 48349-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 48349-done <at> debbugs.gnu.org
Subject: Re: bug#48349: 28.0.50; Problem in dired with symbolic links to
 Tramp-syntax files
Date: Thu, 13 May 2021 14:02:32 +0200

Version: 28.1

Michael Albinus <michael.albinus <at> gmx.de> writes:

Hi Lars,

>> Apparently dired passes symlinks to Tramp in unfortunate ways.
>>
>> For instance:
>>
>> (cd /tmp; ln -s /sudo:root <at> localhost:/tmp/foo bar)
>> emacs -Q /tmp/
>>
>> will infloop asking for a password -- `C-g' will break, but it'll just
>> ask again apparently forever, and you have to kill Emacs to get out of
>> the loop.
>>
>> I haven't tried to debug either case.
>
> This is a collateral damage of 824d1a57ec8e7c90b01af6665de5a114529170df
> in function file-name-non-special. Brrrr :-(
>
> I will try to see how to fix this, w/o loosing the solution for bug#48177.

Should be fixed now in master. Closing the bug.

Best regards, Michael.

Message #16 received at 48349-done <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 48349-done <at> debbugs.gnu.org
Subject: Re: bug#48349: 28.0.50; Problem in dired with symbolic links to
 Tramp-syntax files
Date: Thu, 13 May 2021 14:05:03 +0200

Michael Albinus <michael.albinus <at> gmx.de> writes:

> Should be fixed now in master. Closing the bug.

Yup; I can confirm that it's fixed.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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