`align-regexp' fails in Lisp code

[Raffaele Ricciardi]

Hello everyone,

I'm trying to run `align-regexp' from Lisp code, but it fails with
the error "align-region: Marker does not point anywhere".

Here is the specification of `align-regexp':

---

    (align-regexp BEG END REGEXP &optional GROUP SPACING REPEAT)

Align the current region using an ad-hoc rule read from the
minibuffer.  BEG and END mark the limits of the region.

---

Here is my Lisp code:

    (align-regexp (point-min) (point-max) " hides ")

Marking the whole buffer and calling `align-regexp' interactively does
work, though.

Tried with "emacs -Q".  I'm using GNU Emacs 24.3.1.

Thank you for your attention.