flap_flup_spec.rb

require 'rspec'

describe 'flip flop ragerts' do
  it 'matches stuff between the same thing' do
    text = %{here's some {code} text that is gross {code} and shouldn't be done}
    res = text.split.inject([]) { |a, t| a << t if t =~ /{code}/ ... t =~ /{code}/; a }.join(' ')
    expect(res).to eq(%{{code} text that is gross {code}})
  end
end