Support AND/OR/NOT for labels in rules
was: Support Regex for Labels in Rules
https://features.checkmk.com/suggestions/293832/support-and-or-and-not-for-labels-in-filters and https://features.checkmk.com/suggestions/310195/regex-for-host-labels-in-filters already show people like to use labels.
However, once one starts to use them extensively in filters, and hence labels become more and more a primary selector of hosts/services for users, the next step will be to want to apply rules based on label key/values and their regex.
I guess " regex for key + value" might be more expensive when it comes to computing applicable rules, so I would be happy with only the value being regex capable.