Why do you want that? At my company I don't think anybody has IRC logs enabled, and it is highly suggested that you don't do so - chat, much like real life conversations, is inherently ephemeral.
I can't tell you how many times I've went back and searched for a solution to a similar issue we had six months ago and solved it through collaboration in slack.
Should this end up in a separate wiki? Maybe. Will it? Not always.
I wrote a bot to serve log history search requests in my local IRC channel, because I got tired of fishing through my logs on behalf of other people, who wanted my history for basically the same reason.
At which point I got tired of whitelisting people instead, after abuse issues compelled me to disable anonymous access...
