- warnings_none = 0, /**< Issue no warnings. */
- 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_conflicts_sr = 1 << 3, /**< S/R conflicts. */
- warnings_conflicts_rr = 1 << 4, /**< R/R conflicts. */
- warnings_other = 1 << 5, /**< All other warnings. */
- warnings_all = ~warnings_error /**< All above warnings. */
+ feature_none = 0, /**< No additional feature. */
+ feature_caret = 1 << 0, /**< Enhance the output of errors with carets. */
+ feature_all = ~0 /**< All above features. */