# File lib/sass/tree/visitors/cssize.rb, line 132
  def visit_import(node)
    visit_children_without_parent(node)
  rescue Sass::SyntaxError => e
    e.modify_backtrace(:filename => node.children.first.filename)
    e.add_backtrace(:filename => node.filename, :line => node.line)
    raise e
  end