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Subject: RE: bash & $PS1 (display error)
Date: Fri, 31 Jan 2003 23:37:55 -0500
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From: "Rolf Campbell" <rcampbell AT tropicnetworks DOT com>
To: <cygwin AT cygwin DOT com>
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My prompt is (from the script below) "PS1='$PWD> '".  All of the
characters are 'printable' and none are \[\] enclosed.

> -----Original Message-----
> From: Randall R Schulz [mailto:rrschulz AT cris DOT com] 
> Sent: Friday, January 31, 2003 11:01 PM
> To: cygwin AT cygwin DOT com
> Subject: Re: bash & $PS1 (display error)
> 
> 
> Rolf,
> 
> Assuming some of your prompt is non-printing (escape 
> sequences) offset 
> those non-printing portions with \[backslash-escaped square 
> brackets\]. 
> That tells BASH (and / or the readline library it 
> incorporates) not to 
> count those portions for the purpose of wrapping the 
> displayed input lines.
> 
> 
> Randall Schulz
> 
> 
> At 19:41 2003-01-31, Rolf Campbell wrote:
> >I've noticed several display problems with bash and prompts. 
>  Here's an 
> >easy way to recreate one of them:
> >
> >(I've marked the lines to alleviate the wrapping problem)
> >
> >#line 1
> >PS1='$PWD> '
> >#line2
> >mkdir -p 
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/
> tmp/tmp/tm
> >p
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp
> >#line3
> >cd
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/
> tmp/tmp/tmp
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp
> >
> >When I run this (whether it be in rxvt or in the NT console) I get a 
> >prompt that looks like this: 
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/tmp/
> tmp/tmp/tm
> >p
> >/tmp/tmp/tmp/tmp/tmp/tmp/tmp(#1)
> >/tmp(#2)
> >/tmp/tmp/tmp/tmp/tmp>
> >
> >I've marked the original new-lines.  (#1) in a correct wrap that 
> >occurred at the edge of my display.  (#2) is an incorrect wrap that 
> >happens for no obvious reason.
> >
> >This only seems to happen if the path is wider than the display.
> >
> >-Rolf Campbell
> 
> 
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