#!/bin/bash

git-is-merged () {

  merge_destination_branch=$1

  merge_source_branch=$2



  merge_base=$(git merge-base $merge_destination_branch $merge_source_branch)

  merge_source_current_commit=$(git rev-parse $merge_source_branch)

  if [[ $merge_base = $merge_source_current_commit ]]

  then

    echo $merge_source_branch is merged into $merge_destination_branch

    return 0

  else

    echo $merge_source_branch is not merged into $merge_destination_branch

    return 1

  fi

}