vim:15 opens document with vim at line 15

zshrc

vim() {
	if test $# != 1 -o -r $1; then
		command vim "${@}"
	else
		local args
		args=(${(s.:.)1})
		[[ $#args -ge 2 && $args[2] == <-> ]] \
			&& command vim $args[1] +$args[2] \
			|| command vim $args[1]
	fi
}