class RuboCop::Cop::Layout::SpaceInsidePercentLiteralDelimiters

%x( ls -l )
# bad
%w( foo bar baz )
# bad
%i(foo bar baz)
# good
@example
%i/%w/%x literals.
Checks for unnecessary additional spaces inside the delimiters of

def add_offenses_for_unnecessary_spaces(node) 

def add_offenses_for_unnecessary_spaces(node)
  return unless node.single_line?
  regex_matches(node) do |match_range|
    add_offense(node, location: match_range)
  end
end

def autocorrect(node) 

def autocorrect(node)
  lambda do |corrector|
    regex_matches(node) do |match_range|
      corrector.remove(match_range)
    end
  end
end

def on_array(node) 

def on_array(node)
  process(node, '%i', '%I', '%w', '%W')
end

def on_percent_literal(node) 

def on_percent_literal(node)
  add_offenses_for_unnecessary_spaces(node)
end

def on_xstr(node) 

def on_xstr(node)
  process(node, '%x')
end

def regex_matches(node, &blk) 

def regex_matches(node, &blk)
  [BEGIN_REGEX, END_REGEX].each do |regex|
    each_match_range(contents_range(node), regex, &blk)
  end
end