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From: Andrew Schulman <andrex AT alumni DOT utexas DOT net>
Subject:  Re: Bash 2.05 vs. 3.0 Prompt Behavior
Date:  Thu, 7 Jul 2005 16:52:25 -0400
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> I updated my Cygwin installation this morning and picked up the new
> version of Bash (3.0-7).  When I started a new shell (running under
> rxvt) I was suprised to see that my prompt displayed differently than
> before the upgrade.  I use the following prompt
> 
>     PS1='\[\e]0;${WINDOW_TITLE}\u@\h \w\a\]\u@\h\$ '
> 
> The difference is the display of the portion that is not put in the
> title bar, with Bash 2.05 the prompt was (ignoring the tick marks, which
> are only included to the trailing whitespace) 'pds AT whangarei$ ', while
> with Bash 3.0 the prompt is 'pds AT whangarei$  '.  Note the extra space at
> the end with 3.0.  If I remove the space, the dollar sign is doubled,
> i.e. 'pds AT whangarei$$', if I replace the last space in the PS1 value
> with someother character, then that character is doubled.
> 
> I do not see this behavior if I use the default value of PS1 from
> /etc/profile.
> 
> I have tried googling 'bash 3.0 prompt' and did not find any obvious
> help.  Has anybody else seen this behavior?

The 'extra space in the prompt' bug is well known; see e.g.
http://sources.redhat.com/ml/cygwin/2005-04/msg00325.html and
http://sourceware.org/ml/cygwin-apps/2005-04/msg00036.html.


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