Re: One host hanging on connect

[Michael Albinus]

yary <address@hidden> writes:

Hit,

Thanks for the debug output, it did explain what happened. But it is
still strange, I don't understand _why_ it happens.

Here Tramp tries to unset the echo via "stty -echo".

> 15:35:13 tramp-send-command (6) # stty -inlcr -echo kill '^U' erase '^H'

Now it checks whether this was successful.

> 15:35:14 tramp-send-command (6) # echo foo

No. The echo is still visible.

> 15:35:14 tramp-wait-for-regexp (6) #
> echo foo
>
> foo
> $
> 15:35:14 tramp-set-connection-property (7) # remote-echo t
> 15:35:14 tramp-open-connection-setup-interactive-shell (5) # Remote
> echo still on. Ok.

>From now on, Tramp has enabled a mechanism to suppress the echo. This
works fine for some commands like this.

> 15:35:14 tramp-send-command (6) # _echostty icanon erase ^H cols
> 32767_echo
> 15:35:14 tramp-accept-process-output (10) #
> _echo     stty icanon erase ^H cols 32767_echo     
>
> $
> 15:35:14 tramp-wait-for-regexp (6) #
> $

But then, surprisingly, the echo isn't visible any longer. Tramp becomes
confused.

> 15:35:16 tramp-send-command (6) # _echoecho \"`uname -sr`\"
> 2>/dev/null; echo tramp_exit_status $? _echo
> 15:35:16 tramp-accept-process-output (10) #
> "OpenBSD 3.9"
> tramp_exit_status 0
>
> ///b799e8ae826fe51395cca1b11f83abee

I have no idea why this happens.

Anyway, the appended patch tries to handle even this case. Could you,
please, check, whether it works for you?

Thanks, and best regards, Michael.

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