I'm trying to execute C-M-- from Emacs on Terminal (iTerm2) running on OSX, but I keep getting an error saying C-M-_ is undefined. Any ideas how to workaround this?


1 Answer 1


I eventually got this working by going into iTerm2 preferences and adding a new global shortcut key binding where I entered as Keyboard Shortcut ^⌥-, chose Action Send Escape Sequence and just typed - in the Esc+ field. That seems to do the trick.

Thanks @Gilles and @PythonNut for their help :)

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    – Dan
    Oct 4, 2015 at 15:51

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