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I am trying to define a mapping for Ctrl+. as follows:

  map <C-.> :bn<CR>

This does not work. Typing Ctrl+. just results in repeating the last action just as you would get when typing .. Note that I do not want to change the behaviour of .. Any idea how to get this to work?

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up vote 2 down vote accepted

You cannot assign a mapping to any key that does not send some kind of a different signal back from the keyboard. Since <C-.> doesn't send anything back, as opposed to <.>, you cannot use it.

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