Re: Strange behavior with PS1 prompt

Donald Russell wrote:
On Sat, Oct 17, 2009 at 11:36, Petrus de Calguarium <kwhiskerz@xxxxxxxxx> wrote:
Donald Russell wrote:

Any ideas/suggestions?

None, except to report the bug.

I have noticed this problem on and off for years and it doesn't
have anything to do with the PS1 prompt. Try entering nothing on
the command line, then use the up and down arrows, and eventually
your prompt will pick up some stuff from a previous command,
although, if you press the backspace, you will see that the input
mark is as far left as it can go.

OK, thanks... I really only noticed this after putting newlines etc in
my PS1 prompt, or at least it got more bothersome then.

I'll file a bug against bash...

I don't think this is a bug. Rather, I think the problem is caused by
not escaping the color codes you have embedded in your prompt. Try
this instead:

export PS1="\n\[\033[0;35m\][\u@\h] ${PWD}\n$\[\033[0m\]"

The \[ and \] begin and end a series of non-printable characters.
This tells bash not to count those characters when determining the
length of the prompt. So the color escape sequences are wrapped in \[
and \].

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