GNU bug report logs - #24432
25.1; tramp-cleanup-connection is not removing connection from completion list.

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

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1;
 tramp-cleanup-connection is not removing connection from completion
 list.
Date: Wed, 14 Sep 2016 07:35:49 +0200

To reproduce:
C-x C-f /sudo:: RET
M-x tramp-cleanup-connection
Choose connection and RET

The connection is closed (process deleted and buffers killed) but the
connection is not removed from tramp-cache-data so when doing again
M-x tramp-cleanup-connection the item still remaining in completion.

The reason is that tramp try to remove 
["sudo" "root" "localhost" "" nil] from hash-table
whereas the key in hash-table is
["sudo" "root" "localhost" nil nil]
This is due to tramp-dissect-file-name that returns
["sudo" "root" "localhost" "" nil] instead of
["sudo" "root" "localhost" nil nil]



In GNU Emacs 25.1.3 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
 of 2016-09-08 built on dell-14z
Repository revision: 139289426d1b2c90335cec86c5ac19c51bf08bfc
Windowing system distributor 'The X.Org Foundation', version 11.0.11701000
System Description:	Linux Mint 17.3 Rosa

Configured using:
 'configure CFLAGS=-O3'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LC_MONETARY: fr_FR.UTF-8
  value of $LC_NUMERIC: fr_FR.UTF-8
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Major mode: Lisp Interaction

Minor modes in effect:
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  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
Setting up indent for shell type sh
Indentation variables are now local.
Indentation setup for shell type sh
Restoring buffers...done
Decrypting /home/thierry/.authinfo.gpg...done
Mark set
Quit
delete-backward-char: Text is read-only
Saved to kill-ring: tramp-cleanup-connection
Quit

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simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
dbusbind inotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 621410 145601)
 (symbols 48 58359 8)
 (miscs 40 378 1903)
 (strings 32 151915 129503)
 (string-bytes 1 4775594)
 (vectors 16 82527)
 (vector-slots 8 1218618 72842)
 (floats 8 2705 1206)
 (intervals 56 1941 1329)
 (buffers 976 111)
 (heap 1024 65327 35174))

-- 
Thierry

Message #8 received at 24432 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 24432 <at> debbugs.gnu.org
Subject: Re: bug#24432: 25.1;
 tramp-cleanup-connection is not removing connection from completion
 list.
Date: Wed, 14 Sep 2016 11:55:24 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

Hi Thierry,

> To reproduce:
> C-x C-f /sudo:: RET
> M-x tramp-cleanup-connection
> Choose connection and RET
>
> The connection is closed (process deleted and buffers killed) but the
> connection is not removed from tramp-cache-data so when doing again
> M-x tramp-cleanup-connection the item still remaining in completion.

Indeed.

> The reason is that tramp try to remove 
> ["sudo" "root" "localhost" "" nil] from hash-table
> whereas the key in hash-table is
> ["sudo" "root" "localhost" nil nil]
> This is due to tramp-dissect-file-name that returns
> ["sudo" "root" "localhost" "" nil] instead of
> ["sudo" "root" "localhost" nil nil]

That's not the reason, tramp-{get,set}-connection-property normalize the
vector used in the hash table. But the connection was still there due to
some re-initialization of the connection's hash entry once it was removed.

I've pushed a fix to the master. Could you, pls, check?

Best regards, Michael.

Message #11 received at 24432 <at> debbugs.gnu.org (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 24432 <at> debbugs.gnu.org
Subject: Re: bug#24432: 25.1;
 tramp-cleanup-connection is not removing connection from completion
 list.
Date: Wed, 14 Sep 2016 16:22:31 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> Michael Albinus <michael.albinus <at> gmx.de> writes:
>
>> Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:
>>
>>> Hi Michael, and thanks for quick answer.
>>
>> Hi Thierry,
>>
>>> Now after starting this new emacs session with emacs-25.1.50.1 and enabling
>>> a tramp connection with C-x C-f /sudo::, I have now in the completion
>>> list the old connections of previous emacs session but not the current
>>> one (/sudo:root <at> dell-14z:):
>>
>> Oops, I've overlooked one place to fix. Pls try it, again.
>
> Now after a "/sudo::" I have nothing, M-x tramp-cleanup-connection send
> message "No Tramp connection found" and the tramp buffers are not
> killed, nor the "*tramp/sudo root <at> dell-14z*" process.

Note that M-x tramp-cleanup-all-connections is working fine as expected.

-- 
Thierry

Message #16 received at 24432-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 24432-done <at> debbugs.gnu.org
Subject: Re: bug#24432: 25.1;
 tramp-cleanup-connection is not removing connection from completion
 list.
Date: Thu, 15 Sep 2016 14:12:11 +0200

Version: 25.2

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> Hi Michael,

Hi Thierry,

>> Looks like the approach using an "active" connection property does not
>> work robustly. I've pushed another solution, which is even more simple.
>>
>> Could you, pls, check?
>
> Looks good now, seems to work as expected now.

Thanks for checking; I'm closing the bug.

> One thing though but not related IMO, in emacs-24.5
> /sudo:192.168.0.34#6778|sudo:192.168.0.34:
> expand to /sudo:root <at> 192.168.0.34: but now in this emacs version (dev)
> it expand to same /sudo:192.168.0.34#6778|sudo:192.168.0.34:
> Is this wanted/expected ?

Yes, it is intended.

> Thanks for the quick fix.

Best regards, Michael.

Message #19 received at 24432-done <at> debbugs.gnu.org (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 24432-done <at> debbugs.gnu.org
Subject: Re: bug#24432: 25.1;
 tramp-cleanup-connection is not removing connection from completion
 list.
Date: Fri, 16 Sep 2016 07:01:38 +0200

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

>> One thing though but not related IMO, in emacs-24.5
>> /sudo:192.168.0.34#6778|sudo:192.168.0.34:
>> expand to /sudo:root <at> 192.168.0.34: but now in this emacs version (dev)
>> it expand to same /sudo:192.168.0.34#6778|sudo:192.168.0.34:
>> Is this wanted/expected ?
>
> Yes, it is intended.

Great, that's help.

Thanks.

-- 
Thierry

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