[Idea] gui.quiet based on msg regex
A lot of spambots use NPC scams to post chats to 0000. I'd love to gui.quiet these, but the problem is *any* NPC could post it, and probably only once each. There's no way to quiet them, so people can use this to get around gui.quiet.
If we could quiet based on a regex matching the message sent, then we could quiet all messages matching something we don't want to see regardless of sender.
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