Handling split messages

[Dusty-Meg]

Had a bot working for years now, generally working really well.
Occassionally I get long private messages, which get split into 2 on_privmsg calls.

Is there anyway of joining these together?

Thought about having a buffer which holds the messages, but can see how this could end badly, so wondering if there is anything in the irc package that could assist with this.