function current_branch() {
  ref=$(git symbolic-ref HEAD 2> /dev/null) || return
  echo ${ref#refs/heads/}
}

function push_edge() {
    old_branch=`current_branch`
    git stash save "Edgepush"
    git checkout edge
    git rebase $old_branch
    git push origin edge
    git checkout $old_branch
    git stash pop "Edgepush"
}