#!/usr/bin/env bash
# reset environment variables that could interfere with normal usage
unset GREP_OPTIONS
# put all utility functions here

# make a temporary file
git_extra_mktemp() {
    mktemp -t "$(basename "$0")".XXX
}

#
# check whether current directory is inside a git repository
#

is_git_repo() {
  git rev-parse --show-toplevel > /dev/null 2>&1
  result=$?
  if test $result != 0; then
    >&2 echo 'Not a git repo!'
    exit $result
  fi
}

is_git_repo

# Assert there is at least one branch provided
test -z $1 && echo "new branch name required." 1>&2 && exit 1

if [ -z $2 ]
  then
    $2=${git symbolic-ref --short -q HEAD}
fi

git branch -m $2 $1
git push origin :$2
git push --set-upstream origin $1
