qiolol

#!/usr/bin/env bash
# Roll X dice with Y sides where $1 = "XdY" or "Y" and "X" is implied to be 1
# Inspired by Tippex x3
function roll() {
    local re="^([1-9][0-9]*)*([dD]{0,1}([1-9][0-9]*)){0,1}$"

    if [[ $1 =~ $re && ! $2 ]] ; then
        # Parse input
        local dice=1
        local sides=0