class RSpec::Core::Configuration

def load_spec_files
  # Note which spec files world is already aware of.
  # This is generally only needed for when the user runs
  # `ruby path/to/spec.rb` (and loads `rspec/autorun`) --
  # in that case, the spec file was loaded by `ruby` and
  # isn't loaded by us here so we only know about it because
  # of an example group being registered in it.
  world.registered_example_group_files.each do |f|
    loaded_spec_files << f # the registered files are already expended absolute paths
  end
  files_to_run.uniq.each do |f|
    file = File.expand_path(f)
    load file
    loaded_spec_files << file
  end
  @spec_files_loaded = true
end