#!/usr/bin/env bash

# grab first two non-option arguments
for arg in $*; do
    if [ -n "${arg}" ]; then
        test -z "$firstbranch" && firstbranch="${arg}" && continue
        test -z "$secondbranch" && secondbranch="${arg}" && continue
    else
        # add anything else to a passthrough
        passthrough="$passthrough $arg"
    fi
done

test -z "$firstbranch" && echo "at least one branch required" && exit 1

if test -z "$secondbranch"; then
    secondbranch=$firstbranch
    firstbranch=
fi

git log $passthrough $firstbranch...$secondbranch --format="%m %h %s" --left-right