bug#33005: 27.0.50; Data loss with Gnus registry

[Michael Heerdegen]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> > I didn't think long about it but instead I had a look how other packages
> > handle the case.
>
> Good enough for me! Thanks.

Do you really want this to be nil when the file buffer is evaluated?

(defconst gnus-mock-data-dir
  (when load-file-name
    (file-name-as-directory (expand-file-name
                             "data"
                             (file-name-directory load-file-name))))
  "Source directory for Gnus mock data.")

Then again I need additional work when loading the source to debug.  You
could at least accept `default-directory' when it contains a "data"
named directory, or query for a directory with a useful default instead
of barfing when gnus-mock-start is called.  With other words: what I get
now is just another kind of barfing, no real improvement.

Michael.