vim mapping ctrl-` or <c-`> to <c-w>w

Question

I tried

inoremap <c-`> <c-w>w 

and various combination, but nothing seems to work. Is cntrl-` already mapped?

Using Lubuntu 64 bit 16.04 : lxterminal Attempted cntrl-v cntrl-` to find the character but nothing shows up.

FYI: I am attempting to make sure I can do same thing with my VSCode editor.

Answer 1

In a typical terminal, control` is an ASCII NUL (zero), which vim will not map. Using cat -v to make the result visible, you'd likely see

^@

which is a single character...

You'd have the same behavior for a few other keys which typically produce a NUL, e.g., controlspace, or control@ (really!)

Answer 2

Well, as two other answers indicated. I could NOT find the key combo & I do NOT think I will; however, when using nyaoVim the key combos do work. So, it's just terminal issue. A bit of pain to install but now everything pretty much works!

Answer 3

As @romainl and @Thomas Dickey pointed out, you can't do this in terminal vim. If you want this is in VSCode, just add this to keybindings.json and add this to the editable pane.

// Place your key bindings in this file to overwrite the defaults
[
  { "key": "ctrl+`", "command": "workbench.action.navigateEditorGroups" },
]

This will work as VSCode doesn't have the same problem of interpreting ctrl` as your terminal.

Also, it might not be a good idea to use ctrl` as it is already being used for toggling integrated terminal

⌃`    Toggle Integrated Terminal workbench.action.terminal.toggleTerminal

How to modify keybinding for VSCode

Is cntrl-` already mapped?

No. Even if a key combination is mapped, you can override it in vim.

Attempted cntrl-v cntrl-` to find the character but nothing shows up.

Now you know why

Answer 4

You can't map anything to Ctrl-Backtick because Vim won't recognize it no matter what you do.

Find another key combination.