# File lib/sass/tree/mixin_node.rb, line 38 def _cssize(extends, parent) children.map do |c| parent.check_child! c c.cssize(extends, parent) end.flatten rescue Sass::SyntaxError => e e.modify_backtrace(:mixin => @name, :filename => filename, :line => line) e.add_backtrace(:filename => filename, :line => line) raise e end