re-type if failed is bypassed if entire text is deleted

[wnim]

steps:

1. fail to type an Ngram correctly
2. delete everything
3. type the whole thing correctly

Result:
A new test is generated

Expected result:
Same test regenerates due to failure.

Comment:

When I fail I have an instinct to delete everything because the test is so short anyway and I want to pass the whole thing correctly, but because I failed I still think it adds a nice touch to repeat it twice.
When I deleted everything I expected to have to repeat it twice anyway, because deleting doesn't change the fact that I failed, same way if I only delete the mistake (and not the whole text) I would still have to repeat it twice.