warnings_error = 1 << 0, /**< Warnings are treated as errors. */
warnings_midrule_values = 1 << 1, /**< Unset or unused midrule values. */
warnings_yacc = 1 << 2, /**< POSIXME. */
+ warnings_other = 1 << 3, /**< All other warnings. */
warnings_all = ~warnings_error /**< All above warnings. */
};
/** What warnings are issued. */