/* else prev is NULL, append to end of global list */
                        }
                        if(parse_oc(c, &oc, prev)) return(1);
-                       if (!cfn->c_oc_head) cfn->c_oc_head = oc;
+                       if (!cfn->c_oc_head || !c->valx) cfn->c_oc_head = oc;
                        if (cfn->c_oc_tail == prev) cfn->c_oc_tail = oc;
                        }
                        break;
                                /* else prev is NULL, append to end of global list */
                        }
                        if(parse_at(c, &at, prev)) return(1);
-                       if (!cfn->c_at_head) cfn->c_at_head = at;
+                       if (!cfn->c_at_head || !c->valx) cfn->c_at_head = at;
                        if (cfn->c_at_tail == prev) cfn->c_at_tail = at;
                        }
                        break;
                                /* else prev is NULL, append to end of global list */
                        }
                        if ( parse_syn( c, &syn, prev ) ) return(1);
-                       if ( !cfn->c_syn_head ) cfn->c_syn_head = syn;
+                       if ( !cfn->c_syn_head || !c->valx ) cfn->c_syn_head = syn;
                        if ( cfn->c_syn_tail == prev ) cfn->c_syn_tail = syn;
                        }
                        break;