#!/bin/bash
set -e
. ${0%/*}/../common.sh

case "$#" in
	0)	i=argument/argument.rs; o=argument/blank.rs ;;
	2)	i="$1"; o="$2"; ;;
	*) 	echo >&2 "$0: need 0 or 2 arguments"; exit 16 ;;
esac

perl -pe '
	s{^\s*//.*\n}{};
	s{\s*//.*\n}{\n};
' "$i" >"$o".new

perl -i -0777 -pe '
	s/^\n\s*\n//;
	s/\{\n\s*\n/\{\n/g;
' "$o".new

mv -f "$o".new "$o"