Re: [PATCH v4 0/1] MR320: riched20/tests: Test for ITextDocument::Undo and ITextDocument::Redo (#53289).

[Jinoh Kang (＠iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/riched20/tests/richole.c:
> -
>  }
> -
>  if (SUCCEEDED(hr) && inst->undo_ctl_state == undoStateDisabled)
> -
>  {
> -
>    inst->undo_ctl_state = undoStateActive;
> -
>    inst->last_undo_status = TRUE;
> -
>  }
> -
>  break;
> - case undoActionDisable:
> -
>  hr = ITextDocument_Undo(inst->doc, tomFalse, count);
> -
>  todo_wine
> -
>  ok(hr == S_OK, "Undo: %#lx\n", hr);
> -
>  if (SUCCEEDED(hr))
> -
>  {
> -
>    inst->undo_ctl_state = undoStateDisabled;
> -
>    inst->last_undo_status = FALSE;
> -
>    inst->last_redo_status = FALSE;

This models the complex behaviour of riched20's undo/redo status return.
Note that removing any of both statements or flipping any boolean value makes the test fail.