discard """
  output: '''@["(", "+", " 1", " 2", ")"]'''
"""

import re

let str = "(+ 1 2)"
var tokenRE = re"""[\s,]*(~@|[\[\]{}()'`~^@]|"(?:\\.|[^\\"])*"|;.*|[^\s\[\]{}('"`,;)]*)"""
echo str.findAll(tokenRE)