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List:       bash-bug
Subject:    Re: Cursor positioning in prompt is sometimes wrong, depending on locale and PS1
From:       Jim Paris <jim () jtan ! com>
Date:       2009-06-17 19:47:40
Message-ID: 20090617194740.GA929 () psychosis ! jim ! sh
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Chet Ramey wrote:
> Jim Paris wrote:
> > 	The cursor positioning in the prompt is sometimes wrong,
> > 	depending on the contents of PS1 and the locale.
> > 
> > Repeat-By:
> > 
> > 	With this command, the cursor is positioned after the '5', as expected:
> > 
> > env -i LC_CTYPE=en_US PS1='\[\e[0m\]12345' INPUTRC=/dev/null bash --norc --noprofile
> > 
> > 
> >         With this command, the cursor is incorrectly positioned after the '1':
> > 
> > env -i LC_CTYPE=en_US.UTF-8 PS1='\[\e[0m\]12345' INPUTRC=/dev/null bash --norc --noprofile
> 
> It's not really the locale per se, but the horizontal scroll mode that
> needs attention.  (I didn't really think anybody used it anymore, but
> you forced it when you started bash without TERM defined.)  Try the
> attached patch.

Yes, it fixes this, thanks.

The real problem I'm trying to track down is that the cursor is
sometimes put in the wrong position after a reverse-isearch.  This was
what I came up with when trying to reproduce in a simple test case.
I'll run with the new patch and see if that helps my other problem
too (which can be a bit tricky to reproduce).

-jim



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