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From:	"Max Bowsher" <maxb AT ukf DOT net>
To:	"Cygwin" <cygwin AT cygwin DOT com>
Subject:	bash 3.0-7 bug - prompt length with non-printing characters
Date:	Sun, 10 Jul 2005 20:05:32 +0100
MIME-Version:	1.0
X-IsSubscribed:	yes

I have a prompt ($PS1) which includes non-printing characters. They are 
enclosed with \[ .... \] so that bash knows not to count them in discovering 
the length of the prompt in order to position the cursor correctly.

On upgrading to bash 3, I noticed that the last few characters of my prompt 
were erroneously duplicated (it ended with two $ signs). When tab completion 
was used, the text got nastlily corrupted.

Here is a reproduction case:

PS1='\[\e[32;1m\]@\[\e[33;1m\]#\[\e[0m\] $ '

Curiously, appending '\[\]' to the end of $PS1 works around the problem.

Max.


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