#!/bin/bash

if ! git commit -m 'fixup commit'; then
    echo >&2 "Failed to create fixup commit; aborting."
    exit 1
fi

deps=( $( git deps HEAD^! ) )
if [ ${#deps[@]} != 1 ]; then
    echo >&2 "Failed to find a single dependency of the fixup commit; aborting."
    git reset --soft HEAD^
    exit 1
fi

git commit --amend --fixup=$deps

# TODO: support optionally triggering the rebase.