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xterm has a modifyOtherKeys option that tells it to construct an escape sequence for various key combinations that are normally not available. That option can be enabled in .Xdefaults, or with a control sequence from within the terminal (echo -n -e '\033[>4;1m' does the trick for me).

This option allows for more key combinations to be bound to commands in text mode programs, e.g. in Emacs. For example C-' (Ctrl + ') will normally generate a single ' character, which is useless, but will turn into a complex - but usable - escape sequence when the modifyOtherKeys option is enabled.

Does gnome-terminal have a similar ability? I could not find anything in the menus on my system (Mageia Linux 4, gnome-terminal-3.10.2), but perhaps there is some control sequence with the same effect?

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No, but there's an open bug asking for this: https://bugzilla.gnome.org/show_bug.cgi?id=730157

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  • Unfortunately that seems to be indeed the answer for now...
    – thkala
    Oct 31, 2014 at 8:55

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