For fine control over what characters are allowed, unescaped in source filenames...

[ikiwiki] / debian / preinst

#!/bin/sh

#DEBHELPER#

if [ "$1" = upgrade ] && dpkg --compare-versions "$2" lt 1.2; then
        if [ -e /etc/wikilist ]; then
                if [ ! -e /etc/ikiwiki/wikilist ]; then
                        if [ ! -e /etc/ikiwiki ]; then
                                mkdir /etc/ikiwiki
                        fi
                        mv -f /etc/wikilist /etc/ikiwiki/wikilist
                else
                        rm -f /etc/wikilist
                fi
        fi
fi