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I have defined a key-binding for M-TAB , as follows:

(global-set-key (kbd "M-TAB") 'suspend-frame)

This works fine but once in a while it prints ;9~. I am not sure the main cause of this. Is there any way to prevent this from happening.

I am using emacs inside tmux that has following setup set -g default-terminal "screen-256color".

  • As usual - do you see the same thing if you start Emacs with emacs -Q? If not then bisect your init file to find the culprit. – Drew Oct 22 at 17:33

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