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Re: remote tramp hangs

From: Raphaël Berbain
Subject: Re: remote tramp hangs
Date: Thu, 03 Dec 2009 12:22:39 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

* Raphaël Berbain:

> * Michael Albinus:
>>> 11:52:54.727166 tramp-send-command (6) # exec env ENV='' PROMPT_COMMAND='' 
>>> PS1=\$\  PS2='' PS3='' /bin/sh
>>> 11:52:55.883214 tramp-accept-process-output (10) # 
>>> exec env ENV='' PROMPT_COMMAND='' PS1=\$\  PS2='' PS3='' /bin/sh
>>> # 
>> Tramp starts /bin/sh on the remote host, and expects "$ " as prompt (see
>> PS1). But the prompt is still "# ". That is NOT OK.
>> Is there something in the .profile of root, which overrides the PS1
>> settings?
> Not that I know of, but then...

More on that:  Host is openbsd 4.5, where sh actually is ksh.

"""The default prompt is `$ ' for non-root users, `# ' for root.  If ksh
is invoked by root and PS1 does not contain a `#' character, the default
value will be used even if PS1 already exists in the environment."""

Curiously, "sh" man page doesn't say that... but sh still does it.

Changing the PS1 sent by tramp to include '#' (i.e. "#$ ") works around
that shell behaviour.

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