+/*-----------------------.
+| --feature's handling. |
+`-----------------------*/
+
+static const char * const feature_args[] =
+{
+ "none",
+ "caret", "diagnostics-show-caret",
+ "all",
+ 0
+};
+
+static const int feature_types[] =
+{
+ feature_none,
+ feature_caret, feature_caret,
+ feature_all
+};
+
+ARGMATCH_VERIFY (feature_args, feature_types);