Bug: NUL (Char \x00) cannot be displayed and copied.

[cyfung1031]

This is only found in CodeMirror5.
It solved in CodeMirror6.

How to fix it in CodeMirror5?

I can use coding to setValue with \x00, I can also define new specialCharPlaceholder to handle the display issue.
But still it cannot be copied. Once it got copied, the Clipboard string will not contain \x00.
Select all -> Cut all -> Paste will remove all \x00.

[cyfung1031]

I just got an answer by myself.

  editor.on("cut", function (cm, evt) {
    evt.clipboardData.setData('text/plain', cm.getSelection());
    evt.preventDefault();
    setTimeout(() => {
      document.execCommand("delete", false, null);
    }, 0);
  })

  editor.on("copy", function (cm, evt) {
    evt.clipboardData.setData('text/plain', cm.getSelection());
    evt.preventDefault();
  })

I am not sure this is the best way or not.
If you know a better way, please let me know.