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From: Borsenkow Andrej <Andrej.Borsenkow@mow.siemens.ru>
To: "'Oliver Kiddle'" <okiddle@yahoo.co.uk>, zsh-workers@sunsite.dk
Subject: RE: PATCH: += parameter assignments
Date: Mon, 17 Dec 2001 15:11:27 +0300
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> 
> One possible extension beyond what ksh does would be to also add a -=
> assignment. It could be made to prepend to string and array values
> which would be fairly useful. Or does anyone think that that behaviour
> for -= would be too illogical?
> 

I would prefer += and =+ but that probably breaks ksh93 compatibility.

-andrej