| OptString n -> pr " %s = args.%s ? *args.%s : NULL;\n" n n n
| StringList n ->
pr " %s = realloc (args.%s.%s_val,\n" n n n;
| OptString n -> pr " %s = args.%s ? *args.%s : NULL;\n" n n n
| StringList n ->
pr " %s = realloc (args.%s.%s_val,\n" n n n;