When I ssh into the server and then open tmux, I'm able to enter in Unicode characters. It seems that the problem is specifically with sshing directly with tmux -CC a -t mySession.

Edit: I'm trying to enter unicode characters from my keyboard into text files on my EC2 Ubuntu server with iTerm2 on my macbook using tmux. When I ssh directly into the server and attach to a tmux session, I'm able to enter in unicode characters. If, however, I ssh into tmux directly with the command ssh -i my.pem ubuntu@ec2_domain.com -t 'tmux -CC a -t mySession', I'm unable to enter Unicode characters.

  • Did you try to use the -t switch to ssh?
    – Jakuje
    May 23, 2017 at 20:47
  • @Jakuje Didn't work.
    – John
    May 23, 2017 at 20:52
  • Could you be a bit more specific about exactly what you are doing and what you want to achieve. May 24, 2017 at 0:12

1 Answer 1


Confirmed fixed w/ Iterm2 3.0.15 and tmux 2.5+ https://gitlab.com/gnachman/iterm2/issues/4664

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