GNU bug report logs - #20246
25.0.50; Tramp does not show correct error message when ssh refuses to connect to host due to changed host key

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From: Michael Albinus <michael.albinus <at> gmx.de>
To: Filipp Gunbin <fgunbin <at> fastmail.fm>
Cc: 20246 <at> debbugs.gnu.org
Subject: bug#20246: 25.0.50; Tramp does not show correct error message when ssh refuses to connect to host due to changed host key
Date: Thu, 16 Apr 2015 16:30:39 +0200

Filipp Gunbin <fgunbin <at> fastmail.fm> writes:

> Michael,

Hi Filipp,

>> Could you, please, apply the following patch:
>>
>> *** /home/albinus/src/tramp/lisp/tramp.el.~master~	2015-04-10 16:34:06.421074752 +0200
>> --- /home/albinus/src/tramp/lisp/tramp.el	2015-04-10 16:29:29.236143227 +0200
>> ***************
>> *** 3558,3563 ****
>> --- 3558,3565 ----
>>   	  (tramp-message vec 6 "\n%s" (buffer-string)))
>>   	(unless (eq exit 'ok)
>>   	  (tramp-clear-passwd vec)
>> + 	  (tramp-flush-directory-property vec "")
>> + 	  (tramp-flush-connection-property proc)
>>   	  (delete-process proc)
>>   	  (tramp-error-with-buffer
>>   	   (tramp-get-connection-buffer vec) vec 'file-error
>>
>> This changes the behaviour that Tramp doesn't keep its cache anymore,
>> when there is an error during connection. Tramp reports that the
>> file/directory doesn't exist, and Emacs falls back to its default
>> behaviour, offering you a new empty buffer. This sounds consistent.
>
> Thanks, I applied the patch (using tramp from git master), but nothing
> changed.
>
> Also, it seems that the error messages start to appear after a smaller
> period of time than `remote-file-name-inhibit-cache' (which is 10,
> indeed).

Hmm, strange. Have you tested starting with "emacs -Q"?

> Filipp

Best regards, Michael.

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