A simple single line, triple-quoted comment is giving syntax error. Why?

[Ian Kelly]

On Thu, Apr 2, 2015 at 11:40 PM, Steven D'Aprano
<steve+comp.lang.python at pearwood.info> wrote:
> This sterile, pointless arguing about the minutia of pedantic definitions is
> not even close to useful. Honestly Thomas, Ian, nobody cares any more. If I
> were a betting man, I'd bet that neither of you can describe, in one
> sentence, what is the actual disagreement between the two of you, let alone
> why it matters for Python programming.

Oh, either of us *could* describe it in one sentence; it's just that
our descriptions of how we disagree would not agree. ;-)