[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: tramp (2.1.2); confusing failure mode when remote host does not give
Re: tramp (2.1.2); confusing failure mode when remote host does not give ssh prompt
Mon, 9 Oct 2006 17:21:40 -0400
On Mon, Oct 09, 2006 at 11:01:53PM +0200, Michael Albinus wrote:
> Alan Donovan <address@hidden> writes:
> > When evaluating the following expression:
> > (tramp-handle-file-exists-p "/foo.yoyodyne.com:/bar.cc")
> > using the "ssh" access method, where "foo" is a host that responds to
> > pings, and accepts incoming ssh connections, but does not respond with
> > a "Password:" prompt in a timely manner, then the evaluation fails
> > with the following stack trace:
> > Debugger entered--Lisp error: (wrong-type-argument stringp nil)
> > format(nil "/foo.java")
> > (tramp-send-command-and-check multi-method method user host (format
> > (tramp-get-file-exists-command multi-method method user host)
> > (tramp-shell-quote-argument path)))
> Are you sure we're speaking about Tramp 2.1.2? According to the
> ChangeLog, multi-method has been removed since Tramp 2.1.1.
> > Ideally in such cases the code should signal some kind of timeout
> > error such as "host 'foo' not responding to ssh connection".
> More recent Tramp versions (like 2.1.7) show the contents of the
> connection buffer in case of an error. This is intended to give more
> information about the problem.
> Could you, please, check whether this is sufficient for your needs?
> > cheers
> > alan
> Best regards, Michael.
Thanks for your swift response, and sorry for the confusing error
report. I've double-checked and I think you are correct; I was using
2.0.22 when I discovered the problem, and I upgraded to 2.1.2 which
exhibited similar behaviour, but I did not change the stack-trace I'd
yanked into my e-mail. The updated stack-trace from 2.1.2 is as
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
I tried 2.1.7 and it does indeed produce better error messages, so
I'll use that instead. Thanks again, and sorry for being so lame.