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From: Zoltan Hidvegi <hzoli@cs.elte.hu>
Message-Id: <199606022126.XAA00272@hzoli.ppp.cs.elte.hu>
Subject: Re: Builtin append() and prepend() to PATH, CDPATH, etc.
To: fclim@singnet.com.sg (Fung-Chai Lim)
Date: Sun, 2 Jun 1996 23:26:10 +0200 (MET DST)
Cc: zsh-workers@math.gatech.edu
In-Reply-To: <9606021800.AA01569@fclim.singnet.com.sg> from Fung-Chai Lim at "Jun 3, 96 01:59:27 am"
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> For example, zsh has `pushd_ignore_dups'.  I think it would be easy
> to add a builtin function, say, `uniq-var' that, like `export', accept
> a variable list of arguments.  An example is
> 	$ uniq-var PATH CDPATH MANPATH

>>From zsh-2.6-beta17 you can use typeset -U path cdpath manpath which does
exactly what you want.

> After evaluating this statement, modifying any of the 3 variables
> would ensure no duplication:
> 	$ set path = (/usr/local/bin $path /usr/bin)

This is the csh syntax.  In zsh you have to write

$ path=(/usr/local/bin $path /usr/bin)

Zoltan