#!/bin/bash

git_dir='/usr/src/github/openttd'

branches=(
  signaltunnel
  sloped-stations
  underground
)

cd "$(dirname "$(readlink -f "$0")")"

for branch in "${branches[@]}"; do
  git -C "${git_dir}" diff \
    "$(
      git -C "${git_dir}" merge-base "${branch}" upstream/master
    )" \
    "${branch}" > \
    "${branch}.patch"
done