Exception raised when an RBNF rule name cannot be resolved for a given locale.
Fields
:rule_name— the rule set name that was asked for.:locale— the locale it was asked for.:available— the sorted names of the rule sets the locale does have.:rules_in— the nearest parent whose RBNF rules the locale takes, when that parent is not a supported locale and so was not read::nofornb,:enforen-GB. Otherwisenil.