Good catch — you’re right.
My general point about errors.Is and wrapped sentinel errors still stand, but io.EOF is a special case. The io docs explicitly say that…
Good catch — you’re right.
My general point about errors.Is and wrapped sentinel errors still stand, but io.EOF is a special case. The io docs explicitly say that Read must return io.EOF itself, not a wrapped form, because callers often compare it with ==.
So io.EOF was a poor example there. I’ve updated the demo to use a different sentinel error and will call out io.EOF as an exception.
Thanks for pointing it out.
