Robert Pluim writes:

> end of line *is* a whitespace character, but Iʼm not going to argue
> that. Iʼm going to argue that this doesnʼt cover the case of a '#' at
> EOB without a newline, hence saying 'zero or more' would be better.

But zero-or-more would mean that this line:

#Alpha

Is a comment, along with:

#+TITLE: My Org document

And virtually of all Org meta-lines. I've thought about the \n#<EOB>
issue, but I haven't tested how the current implementation behaves in
this regard.  I think the recent changes in Pandoc would parse it as a
comment.

Regards,
Thibault