class Regexp::Expression::Base

def repetitions
  return 1..1 unless quantified?
  min = quantifier.min
  max = quantifier.max < 0 ? Float::INFINITY : quantifier.max
  range = min..max
  # fix Range#minmax on old Rubies - https://bugs.ruby-lang.org/issues/15807
  if RUBY_VERSION.to_f < 2.7
    range.define_singleton_method(:minmax) { [min, max] }
  end
  range
end