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From: Zoltan Hidvegi <hzoli@frontiernet.net>
Message-Id: <199807081914.OAA11122@frontiernet.net>
Subject: Re: Feature / Idea / (a possible option)
In-Reply-To: <Pine.GSO.3.95q.980708200939.6079L-100000@petzval> from "C. v. Stuckrad" at "Jul 8, 98 08:19:28 pm"
To: stucki@math.fu-berlin.de
Date: Wed, 8 Jul 1998 14:14:13 -0500 (CDT)
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> We use a little Program called 'dotpath', to cleanup PATHes like
> 	export PATH=$(dotpath)
> where 'dotpath' prints the Path cleaned up from duplicate entries
> puts the '.' directory at the end (in case of 'root' accounts
> or 'wheel' group it even eliminates the '.').

How about typeset -U path PATH?  That makes the path unique.  Every
assignment after that will keep the path unique, so PATH=$PATH:$PATH
will leave the path unchanged.  To move the dot to the end, do

path=( "${path[@]:#.}" . )

To remove the dot, you can do:

path[(r).]=()

Zoli