class Sass::Tree::Visitors::CheckNesting
def visit_mixindef(node)
def visit_mixindef(node) @current_mixin_def, old_mixin_def = node, @current_mixin_def yield ensure @current_mixin_def = old_mixin_def end
def visit_mixindef(node) @current_mixin_def, old_mixin_def = node, @current_mixin_def yield ensure @current_mixin_def = old_mixin_def end