I am using xchat as my IRC client on Ubuntu 9.10. It's mostly fine, but when I get a message that's wider than the screen, I can't view the end of it as it goes off the edge of the screen. How do I make xchat split long lines?
That feature you are missing is called word-wrapping, and it works on my updated karmic. Apparently there is no option on the graphical interface to turn this on/off.
Take a look at the line beginning with text_wordwrap on the file /home/your username/.xchat2/xchat.conf
It should be set to 1. That line should be:
text_wordwrap = 1
If it's set to 0, you can use a text editor to change that value to 1.
EDIT: see comments