It's OK if anyone wants to overrule me on this one, but I'm going to reject it. First, since the time the request was made, the size of the scrollback buffer has been changed so the chances of losing something are small, at the cost of some mouse clicking. Second, anything that is lost can be found in the chat log file. Finally, the gCLI and Chat use the same underlying structure so I believe it will not be especially easy to do this for Chat but not for the GCLI, and I definitely don't want to see this implemented for the gCLI.