Git Rebase (alias)

gr.bash

unalias gr
gr() {
    if [ -z $1 ]; then branch="master"; else branch=$1; fi

    old_stash=$(git rev-parse -q --verify refs/stash)
    git stash save -u

    git checkout $branch
    git pull --rebase
    git checkout -
    git rebase $branch

    new_stash=$(git rev-parse -q --verify refs/stash)
    [ "$old_stash" != "$new_stash" ] && git stash pop
}