#!/bin/bash

pattern=$(echo -n '\.rb
\.gemspec
\.jbuilder
\.rake
config\.ru
Gemfile
Rakefile' | tr "\\n" '|')

files=`git diff --cached --name-status | grep -E "^[AM].*($pattern)$" | cut -f2-`
if [ -n "$files" ]; then
  bundle exec rubocop $files --force-exclusion
fi