Vim: vim.insertModeKeyBinding not working for Combinatorial key (Ctrl-?)

[WangRongda]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'user-settings'
2. config

  "vim.insertModeKeyBindingsNonRecursive": [
    {
      "before": ["<C-j>"],
      "after": ["m", "m"]
    }
  ],

1. press but nothing happend

Expected behavior
input characters: "mm"

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• Extension (VsCodeVim) version: 0.15.0
• VSCode version:1.25.1
• OS: 4.17.5-1-ARCH

Additional context
Add any other context about the problem here.

1. Last version is ok.
2. Other key(not Ctrl) is ok.

[expelledboy]

Have you read through the readme section regarding ctrl keys?

[WangRongda]

@expelledboy
Of course!
This is my setting:

"vim.useCtrlKeys": true
"vim.handleKeys": {
     "<C-j>": true
}

Any Problem?

[expelledboy]

I am new the project, was just in the back of my mind when I read your issue :)

[xconverge]

We don't remap this ctrl+ combination most likely. Can you use native vscode bindings to do what you want to do? Something like this

{
"key": "ctrl+j",
"command": "xxxxxxx",
"when": "editorTextFocus && vim.active && vim.mode == 'Insert' && !inDebugRepl"
}

[xconverge]

Duplicate of #757

[WangRongda]

@xconverge What about I just want to remap to some keypress, which a vscode command can't do it.Such as the example above inserting two 'm' character, none command can do the same, right?

[xconverge]

{
  "key": "ctrl+j",
  "command": "type",
  "args": { "text": "mm" },
  "when": "editorTextFocus"
}

See the example here:
https://code.visualstudio.com/docs/getstarted/keybindings#_command-arguments

[WangRongda]

Wow, perfect! Although it is not remap key, this is enough and satisfy my needs.Power command and I am ignorant.

[xconverge]

Yea a LOT can be done with the native keybindings. You can also add something like this to the when clause if you want

&& vim.mode == 'Insert'