I did the same thing but I also mapped Ctrl-\ to send the "prefix" (helpful for neated tmux sessions), so I just hit Ctrl-\ for beginning of line. (Although th

I did the same thing but I also mapped Ctrl-\ to send the "prefix" (helpful for neated tmux sessions), so I just hit Ctrl-\ for beginning of line. (Although this seems to have broken in recent tmux releases on Debian (3.x?) and I haven't looked into yet.)