Incorrect undo behaviour for Chineses Characters [Need Help] Thx very much!

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2

I find the workaround solution to fix.

Here is the code.

let composingStart = false;
let compositionStartTime = NaN;
// define customize history plugin,
new Plugin({
  key: new PluginKey('CustomizeHistory'),
  props: {
    // overwrite handleTextInput merge composition events in single historyState by set same transaction time
    handleTextInput: (view, chFrom, chTo, text) => {
      if (view.composing) {
        if (composingStart === false) {
          composingStart = true;
          compositionStartTime = Date.now();
        }
        view.dispatch(
          view.state.tr
            .insertText(text, chFrom, chTo)
            .setTime(compositionStartTime)
        );
        return true;
      }
      if (composingStart === true) {
        composingStart = false;
        view.dispatch(
          view.state.tr
            .insertText(text, chFrom, chTo)
            .setTime(compositionStartTime),
        );
        return true;
      }
      return false;
    },
  },
});
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