From: Andrew Lorimer <andrew@lorimer.id.au>
Date: Tue, 22 May 2018 08:25:29 +0000 (+1000)
Subject: improve argument validation
X-Git-Url: https://git.lorimer.id.au/scripts.git/diff_plain/dc700aa7208321b7fa5c4dfafd6bc6f531a3e351?hp=dc700aa7208321b7fa5c4dfafd6bc6f531a3e351

improve argument validation
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