"Except in urgent situations, new edit filters should generally be tested without any actions specified (simply enabled) until a good number of edits have been logged and checked before being implemented in "warn" or "disallow" modes. If the filter is receiving more than a very small percentage of false positives it should usually not be placed in 'disallow' mode."
Exemptions for "urgent situation" -- what/how are these defined?
Discussions may happen postfactum here and filter may be applied before having been thoroughly tested; in this case the corresponding editor is responsible for checking the logs regularly and making sure the filter acts as desired
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There are several provisions for urgent situations (which I think should be scrutinised extra carefully since ``urgent situations'' have historically always been an excuse for cuts in civil liberties).
For instance, generally, every new filter should be tested extensively in logging mode only (without any further actions) until a sufficient number of edits has demonstrated that it does indeed filter what it was intended to and there aren't too many false positives.
Only then the filter should have ``warn'' or ``disallow'' actions enabled~\cite{Wikipedia:EditFilter}.
In ``urgent situations'' however (how are these defined? who determines they are urgent?), discussions about a filter may happen after it was already implemented and set to warn/disallow edits whithout thorough testing.
Here, the filter editor responsible should monitor the filter and the logs in order to make sure the filter does what it was supposed to~\cite{Wikipedia:EditFilter}.
