- $type: https://docs.mongodb.com/manual/reference/operator/query/type/
- $mod: https://docs.mongodb.com/manual/reference/operator/query/mod/
- bitwise operators: https://docs.mongodb.com/manual/reference/operator/query-bitwise/
- $comment (ignore it): https://docs.mongodb.com/manual/reference/operator/query/comment/
$regex with $options is handled in https://jira.mongodb.org/browse/MONGOID-4936.
- related to
-
MONGOID-4781 Make embedded matchers work the same as MongoDB server queries
- Released
-
MONGOID-4936 Correctly handle $options when $regex is a regular expression
- Backlog