Gchk bash function to extend on git checkout

better-git-checkout.sh

function gchk() {

	if [[ $1 == "-h" ]]; then
		echo "\nThis function will checkout the branch or prompt the user to create the branch of it does not exist"
		return
	fi

	if [[ $1 == "-b" ]]; then
		git checkout -b ${2}
		return
	fi

	{ # try
		git checkout ${1} &&
	} || { # catch

		echo "Would you like to create the branch? (Y/n)"
		read yn
		case $yn in
			[Nn]* ) echo "branch not created";;
			[Yy]* ) git checkout -b ${1};;
			* ) git checkout -b ${1};;
		esac
	}
}