class RuboCop::Cop::Style::SingleSpaceBeforeFirstArg


something y, z
something x
@example
first argument for method calls without parentheses.
Checks that exactly one space is used between a method name and the

def autocorrect(range) 

def autocorrect(range)
  @corrections << ->(corrector) { corrector.replace(range, ' ') }
end

def on_send(node) 

def on_send(node)
  return if parentheses?(node)
  _receiver, method_name, *args = *node
  return if args.empty?
  return if operator?(method_name)
  return if method_name.to_s.end_with?('=')
  arg1 = args.first.loc.expression
  return if arg1.line > node.loc.line
  arg1_with_space = range_with_surrounding_space(arg1, :left)
  space = Parser::Source::Range.new(arg1.source_buffer,
                                    arg1_with_space.begin_pos,
                                    arg1.begin_pos)
  add_offense(space, space) if space.length > 1
end