zsh-syntax-highlighting: zsh: can't set tty pgrp: Input/output error

I recently updated prezto which caused zsh to freeze with the message “zsh: can’t set tty pgrp: Input/output error” when starting up in tmux. When opening a new shell, it just closes immediately. Using git bisect I was able to determine that my problem starts with 59fbdda but I don’t actually see why. Any thoughts?

Running zsh 5.0.5 (x86_64-apple-darwin14.0)

Some more discussion at https://github.com/sorin-ionescu/prezto/issues/1033

About this issue

  • Original URL
  • State: closed
  • Created 9 years ago
  • Comments: 15 (9 by maintainers)

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for future reference: I hit this error on tmux after upgrading zsh and tmux but keeping the tmux session alive, after killing all my tmux sessions and restarting them it seemed to fix the issue. (though I was not having the issue upon terminal launch only within my tmux sessions)