#!/bin/bash

set -eu

export left_dir="$1"
export right_dir="$2"

left_data_files=$(cd "$left_dir" && find . -name '*.data' -print)
right_data_files=$(cd "$right_dir" && find . -name '*.data' -print)

union_data_files=$(echo $left_data_files $right_data_files | sort | uniq)

cd "$left_dir"
for file in $union_data_files
do
	diff -u "$file" ../$right_dir/$file
done