Feature summary (what you would like to be able to do and where):
Have ip_in_range() in the AbuseFilter extension allow multiple arguments.
Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
An example use case is if a filter needs to check multiple IPs, like https://en.wikipedia.org/wiki/Special:AbuseFilter/958
Benefits (why should this be implemented?):
This would allow for more efficient conditions in AbuseFilter conditions; instead of having to have each check burn through one of the 1000 precious conditions, allowing multiple arguments would have it take only one.