shopt -s extglob
readonly version=$1
+readonly newsfile=$2
readonly numpat='+([0-9])'
case "$version" in
;;
esac
-readonly newsver="Version ${version/~/}"
+readonly newsver="Version ${version/\~/ }"
-if ! grep -q -x "$newsver" NEWS
+if ! grep -q -x "$newsver" $newsfile
then
echo "Unable to find heading '$newsver' in NEWS" >&2
exit 1