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Date: Sat, 3 Sep 2005 01:16:50 +0200
From: DervishD <zsh@dervishd.net>
To: Zsh Users <zsh-users@sunsite.dk>
Subject: Bad math expression due to parameters
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	version=3.0.4

    Hi all :)

    I have this in a script, after parsing command line arguments:

    [[ $OPTARG -lt 8 ]] && OPTARG=8

    If I call the script like this:

    $ ./script -o --

    then $OPTARG is "--" and that gives a "bad math expression" in
the test above.

    How can I solve this? Must I validate $OPTARG before messing with
it on a math expression? Is this validation enough?:

    [[ "OPTARG" = [[:digit:]]## ]]

    Can I do a more clever validation?

    Thanks a lot in advance :)

    Raúl Núñez de Arenas Coronado

-- 
Linux Registered User 88736 | http://www.dervishd.net
http://www.pleyades.net & http://www.gotesdelluna.net
It's my PC and I'll cry if I want to...