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Date: Thu, 11 Nov 2004 17:02:47 -0800 (PST)
From: Bart Schaefer <schaefer@zanshin.com>
To: Stephane Chazelas <Stephane_Chazelas@yahoo.fr>
cc: Zsh users list <zsh-users@sunsite.dk>
Subject: Re: [tip] mouse support
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References: <20041111122011.GB4451@sc> <4483.1100184032@csr.com>
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On Thu, 11 Nov 2004, Stephane Chazelas wrote:

> zero='%([BSUbsu]|{*%})'
> 
> It replaces '%%some %{%{some%}%}' with '%ome %}' instead of
> '%%some '

Hmm.  To fix that, you need extended globbing:

setopt extendedglob
zero='(#b)([^%]|(#s))%([BSUbsu]|{*%})'
print ${(%%)PS1//$~zero/$match[1]}

On Thu, 11 Nov 2004, Stephane Chazelas wrote:

> Well the (%%) expansion flag has another problem:
> 
> var='%Sfoo%s'
> PS1='$var'
> 
> In that case, you need to expand first the variables in PS1 or
> you'll miss the %S %s visual sequences.

That's easy enough:

if [[ -o promptsubst ]]
then print ${(%%)${(e)PS1}//$~zero/$match[1]}
else print ${(%%)PS1//$~zero/$match[1]}
fi