+ unsmob_context_def ($$)->add_context_mod ($2);
+ }
+ | context_def_spec_body context_modification {
+ Context_def *td = unsmob_context_def ($$);
+ SCM new_mods = unsmob_context_mod ($2)->get_mods ();
+ for (SCM m = new_mods; scm_is_pair (m); m = scm_cdr (m)) {
+ td->add_context_mod (scm_car (m));
+ }