Tramp + ido-mode: error with "/su:"

Tramp + ido-mode: error with "/su:"

[Teemu Likonen]

I get annoying error when using Tramp and ido-mode together and try to
edit file through /su or /sudo. I do C-x C-f (ido-find-file), type
"/su:" and just after entering the colon a new window named *tramp/scp
su* pops up with the text:

    ssh: Could not resolve hostname su: Name or service not known

    Process *tramp/scp su* exited abnormally with code 255

I can continue typing the path (like /su::/etc/foo) without further
problems and Tramp and Ido completion work nicely. It's the opening of
new window which I'd very much like to get rid of. With Ido mode turned
off there are no errors.

Is it possible to fix this issue somehow?

Re: Tramp + ido-mode: error with "/su:"

[Andreas Politz]

Teemu Likonen wrote:
> I get annoying error when using Tramp and ido-mode together and try to
> edit file through /su or /sudo. I do C-x C-f (ido-find-file), type
> "/su:" and just after entering the colon a new window named *tramp/scp
> su* pops up with the text:
> 
>     ssh: Could not resolve hostname su: Name or service not known
> 
>     Process *tramp/scp su* exited abnormally with code 255
> 
> I can continue typing the path (like /su::/etc/foo) without further
> problems and Tramp and Ido completion work nicely. It's the opening of
> new window which I'd very much like to get rid of. With Ido mode turned
> off there are no errors.
> 
> Is it possible to fix this issue somehow?


I tried to fix this in ido, but gave up after a while.  Fixing it with

(setq tramp-default-method "sudo")

from tramps side seems to work.

-ap

Re: Tramp + ido-mode: error with "/su:"

[Teemu Likonen]

Andreas Politz (2008-12-29 21:52 +0100) wrote:

> Teemu Likonen wrote:
>>     ssh: Could not resolve hostname su: Name or service not known
>>
>>     Process *tramp/scp su* exited abnormally with code 255

>> Is it possible to fix this issue somehow?

> I tried to fix this in ido, but gave up after a while.  Fixing it with
>
> (setq tramp-default-method "sudo")
>
> from tramps side seems to work.

Indeed, that works. Thanks.

I checked with Emacs 23 and its tramp does not give that error message
with ido. The whole customization of Emacs 23's tramp is a bit different
from 22's.

Re: Tramp + ido-mode: error with "/su:"

[Michael Albinus]

Teemu Likonen <tlikonen@iki.fi> writes:

> I get annoying error when using Tramp and ido-mode together and try to
> edit file through /su or /sudo. I do C-x C-f (ido-find-file), type

???

I guess you mean M-: (ido-find-file)

> "/su:" and just after entering the colon a new window named *tramp/scp
> su* pops up with the text:
>
>     ssh: Could not resolve hostname su: Name or service not known
>
>     Process *tramp/scp su* exited abnormally with code 255

I couldn't reproduce it with both Emacs 22 and 23, starting "emacs -Q".

It happened only with Emacs 22, when I've typed "/su: <TAB>". But this
is solved already with Emacs 23 (running Tramp 2.1).

Best regards, Michael.

Re: Tramp + ido-mode: error with "/su:"

[Teemu Likonen]

Michael Albinus (2008-12-29 23:01 +0100) wrote:

> Teemu Likonen <tlikonen@iki.fi> writes:
>
>> I get annoying error when using Tramp and ido-mode together and try
>> to edit file through /su or /sudo. I do C-x C-f (ido-find-file), type

> I guess you mean M-: (ido-find-file)

When ido-mode is turned on C-x C-f runs command ido-find-file. With
parentheses I just wanted to tell what command exactly is executed when
I type that C-x C-f key sequence. Sorry for the being unclear.

Re: Tramp + ido-mode: error with "/su:"

[Michael Albinus]

Teemu Likonen <tlikonen@iki.fi> writes:

> Michael Albinus (2008-12-29 23:01 +0100) wrote:
>
>> Teemu Likonen <tlikonen@iki.fi> writes:
>>
>>> I get annoying error when using Tramp and ido-mode together and try
>>> to edit file through /su or /sudo. I do C-x C-f (ido-find-file), type
>
>> I guess you mean M-: (ido-find-file)
>
> When ido-mode is turned on C-x C-f runs command ido-find-file. With
> parentheses I just wanted to tell what command exactly is executed when
> I type that C-x C-f key sequence. Sorry for the being unclear.

I see. Starting Emacs, and running M-x ido-mode, I could reproduce it as
well.

There is still no problem with Emacs 23 + built-in Tramp 2.1, as you
have confirmed. The combination of Emacs 22 and Tramp 2.0 (built-in) or
Tramp 2.1 gives the error.

I remember a discussion a year ago about a similar problem, see
<http://thread.gmane.org/gmane.emacs.devel/83860>. But I don't know,
whether the published patch works also for Emacs 22. Maybe we let it as
it is (with the given workaround presetting the default method).

Best regards, Michael.