class Optimist::Option

def self.handle_short_opt(sopt)
  sopt = sopt.to_s if sopt && sopt != :none
  sopt = case sopt
         when /^-(.)$/          then $1
         when nil, :none, /^.$/ then sopt
         else                   raise ArgumentError, "invalid short option name '#{sopt.inspect}'"
         end
  if sopt
    raise ArgumentError, "a short option name can't be a number or a dash" if sopt =~ ::Optimist::Parser::INVALID_SHORT_ARG_REGEX
  end
  return sopt
end