#!/usr/bin/env bash
#
# mfnew
#
# Create a new branch from the default target with the given name
#

[[ $# < 2 ]] || { echo "Usage: `basename $0` [branch]" 1>&2 ; exit 1; }

MFINFO=$(mfinfo) || exit 1
IFS=' ' read -a INFO <<< "$MFINFO"
TARG=${INFO[3]}

case "$#" in
  0 ) BRANCH=pr_for_$TARG-$(date +"%G-%m-%d_%H.%M.%S") ;;
  1 ) BRANCH=$1 ;;
esac

git fetch upstream
git checkout upstream/$TARG -b $BRANCH