ZSH function overwriting the shell built-in `cp`, using `rsync` with a progress bar.

cp.zsh

function cp() {
	if [ -f "$1" ];then
		SIZE="$(stat -f '%z' "$1")"
		if [ -e "$2" ];then
			echo "File exists. Overwrite (Y/n)? "
			read todo
			if [ "$todo" = "y" ] || [ "$todo" = "Y" ] || [ "$todo" = "Yes" ] \
			|| [ "$todo" = "yes" ] || [ "$todo" = "" ];then
				echo "Overwriting $2 with $1"
			else
				return
			fi
		fi
		pv -s $SIZE "$1" > "$2"
	elif [ -d "$1" ];then
		if [ ! -e "$2" ];then
			type="Copying"
		elif [ -d "$2" ];then
			read todo?"File exists. Merge (Mm) or Overwrite [Oo]? "
			if [ "$todo" = "M" ] || [ "$todo" = "m" ];then
				echo "Merging $1 to $2"
			elif [ "$todo" = "O" ] || [ "$todo" = "o" ];then
				echo "Overwriting $2 with $1"
				rm "$2"
			else
				echo "Please choose M or O"
				return
			fi
		fi
		rsync -ahvPu "$1" "$2"
	elif [ $1 != '' ];then
		echo "Something went wrong. Please use \`cpp $1 $2\`"
	else
		echo 'Usage: cp input output'
		return
	fi
	say 'done'
}

One issue, it doesn't allow wildcard copying? Yeah, it just deals with $1 and $2... Idk how to implement all that. Probably gonna be a loop…