What're the differences between commands with/without the `default:` prefix?

Question

List of commands with the default: prefix:

• default:compositionEnd
• default:compositionStart
• default:compositionType
• default:cut
• default:paste
• default:redo
• default:replacePreviousChar
• default:type
• default:undo

And they all have a version that doesn't have the default: prefix, what are the differences between them?

Answer 1

Quote from vim-sample/README.md:

• When a keydown is not matched by any keybinding rule, it might produce a character. This is dispatched to the type command.
• It is, therefore, possible for an extension to overwrite the type command and handle characters instead of the VS Code editor.
• There is a default:type command that maps to the VS Code editor's type handler in case an extension wishes to delegate back typing to VS Code.

For an example of usage, see vim-sample/src/extension.ts.