Kenny Stevens writes:
> Do we _always_ want to only check the msgstr values, or does it make
> sense to check the English text as well?

It doesn't really make sense to check the msgid.  The msgid is a key
which is looked up by a program, where the text comes from.  If the
msgid was corrected in the po-file, the result would be this entry
would never be found.  Spelling checking of those would need to be
done and corrected in the source C/C++/etc. file to be meaningful.

> I would prefer to have this automatic based on major or minor mode.  I
> didn't locate any po-mode library...  can you send that to me to help
> testing?

I attach the version which comes bundled with emacs in Red Hat.

Note though, that I don't consider this work finished.  PO-mode sets
the buffer in read-only mode and only allows editing of the
appropriate regions by special commands.  That means I only use ispell
for checking so far, the actual correction needs a second iteration.

Karl Eichwalder suggested this solution

(defun po-ispell ()
  (interactive)
  (let ((buffer-read-only nil))
    (ispell)))

That could be a good idea, and then binding it to some key.  But that
should be done in po-mode.el rather than ispell.el.

Bruno, it is you who maintain po-mode.el now, IIRC.  What do you
think?

> In my short evaluation, the following regexp seems to be an
> improvement:
> 
> ("^msgid" . "^msgstr")
> 
> replaced by:
> 
> ("^\\(#~ \\)?msgid" . "^\\(#~ \\)?msgstr")

Yes, that makes sense.