class RuboCop::Cop::Style::InitialIndentation

def autocorrect(range)
  ->(corrector) { corrector.remove(range) }
end

def investigate(processed_source)
  first_token = processed_source.tokens.find do |t|
    !t.text.start_with?('#')
  end
  return unless first_token
  return if first_token.pos.column == 0
  with_space = range_with_surrounding_space(first_token.pos, :left,
                                            nil, !:with_newline)
  # If the file starts with a byte order mark (BOM), the column can be
  # non-zero, but then we find out here if there's no space to the left
  # of the first token.
  return if with_space == first_token.pos
  space = Parser::Source::Range.new(processed_source.buffer,
                                    with_space.begin_pos,
                                    first_token.pos.begin_pos)
  add_offense(space, first_token.pos)
end