class RuboCop::Cop::Style::BarePercentLiterals

This cop checks if usage of %() or %Q() matches configuration.

def autocorrect(node) 

def autocorrect(node)
  src = node.loc.begin.source
  replacement = src.start_with?('%Q') ? '%' : '%Q'
  @corrections << lambda do |corrector|
    corrector.replace(node.loc.begin, src.sub(/%Q?/, replacement))
  end
end

def check(node) 

def check(node)
  return if node.loc.respond_to?(:heredoc_body)
  return unless node.loc.respond_to?(:begin)
  return unless node.loc.begin
  msg = case node.loc.begin.source
        when /^%[^\w]/
          format(MSG, 'Q', '') if style == :percent_q
        when /^%Q/
          format(MSG, '', 'Q') if style == :bare_percent
        end
  add_offense(node, :begin, msg) if msg
end

def on_dstr(node) 

def on_dstr(node)
  check(node)
end

def on_str(node) 

def on_str(node)
  check(node)
end