TAILQ_LAST
cur_scope = TAILQ_LAST(&scope->inner_scope, scope_tailq);
cs = TAILQ_LAST(&cs_tailq, cs_tailq);
last_scope = TAILQ_LAST(&scope_context->inner_scope,
last_scope = TAILQ_LAST(&scope_context->inner_scope,
for ((var) = TAILQ_LAST((head), headname); \