I just install tmux on Ubuntu 12.04 LTS and it throws me this error when I try to use tab completion for simple commands like 'cd' or 'mv' in the /etc/bash_completion file.
command substitution: line 74: syntax error near unexpected token `done'
However, I can use tab completion in my normal terminal or in byobu. Has anyone else encountered this issue or knows how to fix it? I do have the bash completion file included in my .bashrc.