#!/bin/sh

rebase_onto="$1"

for dir in node_modules test/reference; do
    # If a particular submodule is...
    if test -e "${dir}/.git" &&                         # ...checked out...
       test -z "$(git status --porcelain "${dir}")" &&  # ...clean...
       ! git diff --quiet "${rebase_onto}" -- "${dir}"  # ...and changed on origin...
    then
        # then save ourselves the trouble of it being wrong post-rebase.
        echo "Removing soon-to-be out-of-date ${dir}..."
        rm -rf "${dir}"
        mkdir "${dir}"
    fi
done