File: tidy.postinst

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#!/bin/sh

set -e

# Move a conffile without triggering a dpkg question
mv_conffile() {
    OLDCONFFILE="$1"
    NEWCONFFILE="$2"

    if [ -e "$OLDCONFFILE" ]; then
        echo "Preserving user changes to $NEWCONFFILE ..."
        mv -f "$NEWCONFFILE" "$NEWCONFFILE".dpkg-new
        mv -f "$OLDCONFFILE" "$NEWCONFFILE"
    fi
}

case "$1" in
configure)
    if dpkg --compare-versions "$2" le "$LASTVERSION"; then
        mv_conffile "/etc/tidy/tidy.conf" "/etc/tidy.conf"
    fi
esac

#DEBHELPER#

exit 0