Comment by regularfry

No, it's spell-checking. Use of the word "reel" in this sentence, for instance, is definitely a spelling error. There's no grammatically valid form of the word "real" spelled with two 'e's. The fact that "reel" happens to be a valid word doesn't mean that its presence in the sentence is due to a grammatical error - it's just an accidental collision.

That no spell checker might be able to catch this specific class of error doesn't change the type of error it is.