-int lc_opt_enum_ ## N ## _dump_vals(char *buf, size_t n, LC_UNUSED(const char *name), LC_UNUSED(lc_opt_type_t type), void *data, LC_UNUSED(size_t len)) \
+int lc_opt_enum_ ## N ## _dump_vals(char *buf, size_t n, const char *name, lc_opt_type_t type, void *data, size_t len) \