Re: [patch] add interactive browse of revisions from vc *Annotate* buffers

[Richard Stallman]

    (defun line-at-pos (&optional pos)
      "Return buffer line number and narrowed line number at position POS.
    If POS is nil, use current buffer location.
    Return value is line-number or a cons (line-number narrowed-line-number)."

I don't like that complex definition of the return value.
It should be one or the other.