markpasc/tender — pull request #2 by miyagawa (2011-12-21 21:32:13+00:00)
Title: Fixed a bug the bot says "nick: " when someone joins the channel

I'm not sure when this incompatibility has been made, but apparently you now have to return undef, instead of an empty string to not say anything.

http://search.cpan.org/~hinrik/Bot-BasicBot-0.89/lib/Bot/BasicBot.pm#said