class RuboCop::Cop::Style::UnneededPercentX

This cop checks for usage of the %x() syntax when “ would do.

def autocorrect(node) 

def autocorrect(node)
  @corrections << lambda do |corrector|
    corrector.replace(node.loc.begin, '`')
    corrector.replace(node.loc.end, '`')
  end
end

def on_xstr(node) 

def on_xstr(node)
  add_offense(node, :expression) if node.loc.expression.source !~ /`/
end