bug#24804: 25.1; posn-at-point erroneously signals an error

[Andreas Politz]

Eli Zaretskii <eliz@gnu.org> writes:

> Andreas, can you try the patch below?  Thanks.

I can confirm, that the error regarding above recpie goes away.

Though I'm pretty confused about what this function should actually
return in this case.  E.g. in the scenario above, evaluating (posn-x-y
(posn-at-point x)) with x=point-min, resp. x=point-max, returns (0 . 0),
resp.  (747 . 0), where 747 is the width of the image.  Does that sound
right ?