GNU bug report logs - #11065
24.0.94; Problem with tramp & plink

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

From: Dani Moncayo <dmoncayo <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.94; Problem with tramp & plink
Date: Thu, 22 Mar 2012 11:54:59 +0100

[Message part 1 (text/plain, inline)]

Hello,

I'm trying to use Emacs to edit remote file at work, but I'm having trouble.

This is my setup:
* OS: Windows XP SP3.
* GNU Emacs 24.0.94 (almost latest trunk).
* Putty 0.62 installed, with its related utilities (pscp, plink, psftp).

From a cmd.exe console, I can login to a remote host using the command
"plink my_host" and giving my credentials.  However, the remote host
returns strange characters just before the the prompt text:

  [Copyright messages and stuff...]

  You have mail.
          ←H        ←H        ←H        ←H        ←H        ←H
←H        ←H
  [/home/my_user]


Now, from emacs (-Q), if I do:
  (cd "/plink:my_user <at> my_host:~/")

Emacs ask me the password and after I provide it, hangs (I can cancel
the operation with several `C-g').

Looking at the *tramp/plink my_user <at> my_host* buffer (attached to this
email), I see that the login has been successful, but Emacs somehow is
not aware of that (probably because of the above-mentioned strange
characters).

So, I'd like to know if I can do something to make Emacs work in this
case, or Emacs can be adapted instead.

TIA.

In GNU Emacs 24.0.94.1 (i386-mingw-nt5.1.2600)
 of 2012-03-19 on MARVIN
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include'

-- 
Dani Moncayo

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Message #8 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Dani Moncayo <dmoncayo <at> gmail.com>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Thu, 22 Mar 2012 17:28:42 +0100

Dani Moncayo <dmoncayo <at> gmail.com> writes:

> Hello,

Hi Dani,

> From a cmd.exe console, I can login to a remote host using the command
> "plink my_host" and giving my credentials.  However, the remote host
> returns strange characters just before the the prompt text:
>
>   [Copyright messages and stuff...]
>
>   You have mail.
>           ←H        ←H        ←H        ←H        ←H        ←H
> ←H        ←H
>   [/home/my_user]

The default shell prompt pattern in Tramp does not recognizes "[]"
templates. You might change it by

(setq tramp-shell-prompt-pattern
      "\\(?:^\\|\\)[^#$%>\n]*#?[]#$%>] *\\(\\[[0-9;]*[a-zA-Z] *\\)*"

(Beware the ^M and ^[ characters)

> TIA.

Best regards, Michael.

Message #11 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Dani Moncayo <dmoncayo <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Thu, 22 Mar 2012 17:41:12 +0100

> The default shell prompt pattern in Tramp does not recognizes "[]"
> templates. You might change it by
>
> (setq tramp-shell-prompt-pattern
>      "\\(?:^\\|\\)[^#$%>\n]*#?[]#$%>] *\\(\\[[0-9;]*[a-zA-Z] *\\)*"
>
> (Beware the ^M and ^[ characters)

This seems to work for me.  So this bug report can be closed.

Thanks!

-- 
Dani Moncayo

Message #18 received at 11065-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Dani Moncayo <dmoncayo <at> gmail.com>
Cc: 11065-done <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Thu, 22 Mar 2012 20:41:42 +0100

Dani Moncayo <dmoncayo <at> gmail.com> writes:

> This seems to work for me.  So this bug report can be closed.

Done.

> Thanks!

Best regards, Michael.

Message #21 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Lennart Borgman <lennart.borgman <at> gmail.com>
To: 11065 <at> debbugs.gnu.org, michael.albinus <at> gmx.de
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Thu, 22 Mar 2012 22:30:17 +0100

On Thu, Mar 22, 2012 at 20:41, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> Dani Moncayo <dmoncayo <at> gmail.com> writes:
>
>> This seems to work for me.  So this bug report can be closed.
>
> Done.
>
>> Thanks!
>
> Best regards, Michael.

Just a thought: Is not plink the "standard" way to communicate this
way with Emacs on w32? Should perhaps this solution be documented
somewhere? (Or even implemented as a choice on w32?)

Message #24 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Lennart Borgman <lennart.borgman <at> gmail.com>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Fri, 23 Mar 2012 08:48:39 +0100

Lennart Borgman <lennart.borgman <at> gmail.com> writes:

Hi Lennart,

> Just a thought: Is not plink the "standard" way to communicate this
> way with Emacs on w32?

The problem is not related to plink. It can happen for every Tramp
connection using a remote shell, and the remote shell's prompt is
composed by "[]".

> Should perhaps this solution be documented somewhere?

Customizing `tramp-shell-prompt-pattern' is documented in the Tramp manual.

> (Or even implemented as a choice on w32?)

`tramp-shell-prompt-pattern' is derived from `shell-prompt-pattern'.
Both do not support "[]" style prompts, because shell script fragments like

    if [ -n "$FOO" ]

would be treated as prompt. OTOH, Tramp redefines the prompt immediately
after connection, so it might be safe to add this prompt style (as I
have recommended to Dani).

I will check the Tramp sources, whether there are other potential
conflicts. If there is no obvious problem, I'll extend
`tramp-shell-prompt-pattern' in the trunk such a way, once it has been
reopened for 24.2. Let's see, whether somebody rants about.

Best regards, Michael.

Message #27 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Christoph Scholtes <cschol2112 <at> googlemail.com>
To: Dani Moncayo <dmoncayo <at> gmail.com>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Fri, 23 Mar 2012 06:33:49 -0600

On 3/22/2012 4:54 AM, Dani Moncayo wrote:
\
> I'm trying to use Emacs to edit remote file at work, but I'm having trouble.
>
> This is my setup:
> * OS: Windows XP SP3.
> * GNU Emacs 24.0.94 (almost latest trunk).
> * Putty 0.62 installed, with its related utilities (pscp, plink, psftp).

Can you send your Tramp specific settings in your .emacs?

Thanks,
Christoph

Message #30 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Lennart Borgman <lennart.borgman <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Fri, 23 Mar 2012 13:36:32 +0100

[Message part 1 (text/plain, inline)]

On Fri, Mar 23, 2012 at 08:48, Michael Albinus <michael.albinus <at> gmx.de>wrote:

> Lennart Borgman <lennart.borgman <at> gmail.com> writes:
>
> Hi Lennart,
>
> > Just a thought: Is not plink the "standard" way to communicate this
> > way with Emacs on w32?
>
> The problem is not related to plink. It can happen for every Tramp
> connection using a remote shell, and the remote shell's prompt is
> composed by "[]".
>

I see, thanks Michael.

[Message part 2 (text/html, inline)]

Message #33 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Dani Moncayo <dmoncayo <at> gmail.com>
To: Christoph Scholtes <cschol2112 <at> googlemail.com>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Fri, 23 Mar 2012 13:40:37 +0100

> Can you send your Tramp specific settings in your .emacs?

When I send this bug report, my tram-specific settings where zero.

Now, I have what Michael suggested:

  (setq tramp-shell-prompt-pattern
        "\\(?:^\\|\\)[^#$%>\n]*#?[]#$%>] *\\(\\[[0-9;]*[a-zA-Z] *\\)*")


-- 
Dani Moncayo

Message #36 received at 11065 <at> debbugs.gnu.org (full text, mbox):

From: Dani Moncayo <dmoncayo <at> gmail.com>
To: Christoph Scholtes <cschol2112 <at> googlemail.com>
Cc: 11065 <at> debbugs.gnu.org
Subject: Re: bug#11065: 24.0.94; Problem with tramp & plink
Date: Fri, 23 Mar 2012 14:03:25 +0100

> When I send this bug report, my tram-specific settings where zero.
         ^^^^                     ^^^^

Sorry, I meant:
  When I sent this bug report, my tramp-specific settings where zero.

-- 
Dani Moncayo

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