Because LibResInfo fires a callback for every resurrection spell, including Mass Resurrection, it can get spammy, especially for Mass Res. For that spell, LRI fires the cast start callback for each target that a caster is MR'ing.
For example, CasterOne casts Mass Resurrection, affecting 10 targets; that's 10 callbacks being fired. That is not a problem until CasterTwo casts as well, and now we are up to 20 callbacks.
I have code that was supposed to notify CasterTwo that CasterOne already has it covered. The trouble is that the code notifies CasterTwo 10 times!
I have two different methods of reducing chat spam. Both use a table, notified, which is checked to see if a caster has been sent the message, if yes, backs out, if no, sends collision message. I am not sure which works properly, and the tests I did in LFR proved inconclusive.