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The shortcut Ctrl+U (in normal mode) doesn't work in my MacVim, while Ctrl+D works fine. Also Ctrl+O does nothing, while Ctrl+I works as extected. Could anyone help me please?

I'm using MacVim 7.4 and OS X 10.10.3. I'm sure it was fine a month ago, but I don't remember exactly when it went wrong. It could be Yosemite that I upgraded from Marvericks like a week ago.

In more details:

  • It's only the case at GUI(no problem in vim on a terminal)
  • Ctrl+U and Ctrl+O in other software(such as Eclipse) are fine
  • :nmap tells me there is no map for C-U or C-O(meaning default, right?)
  • When I delete .vimrc, .gvimrc, and all the plugin, I still have the same problem
  • When I press Ctrl+Shift+U, strangely enough it works(page-up)
  • Also Ctrl+Shift+O navigates back in jumplist

Thanks in advance.

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  • Stupid question, Are you at the top of your document? Does macvim receive the correct keycode? What is the output of <c-v><c-d> in insert mode. It should output ^D. Commented Apr 18, 2015 at 3:40
  • As I wrote in the answer, the Japanese IM was hooking the key and MacVim didn't receive it. Anyway, thanks for your time. Commented Apr 18, 2015 at 13:30

1 Answer 1

Reset to default
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It turned out that it's caused by the new Japanese IM which was introduced in Yosemite. The IM has a setting called "Enable Windows-like key operations" in the system preferences. I have no idea what the setting means, but disabling it solved my problem.

Thanks.

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3 Comments

What's an IM please?
I guess it stands for Input Method. It's like FEP(front end processor), a.k.a. IME(input method editor), in Windows.
@gpsoft thank you very much for your post, had the same problem.

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