bug#36903: 27.0.50; gnus registry vs. debbugs

[Eric Abrahamsen]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> On 08/04/19 01:47 AM, Michael Heerdegen wrote:
>> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>>
>>> > AFAIU the problem is that gnus-registry-db is bound to nil *Bugs*
>>>
>>> Do you know why/where this is happening?
>>
>> The nil binding?  That can only be `gnus-registry-clear'.
>>
>> And I guess that explains why I do not see the problem always: when Gnus
>> is running, it works, and it also works before Gnus has started for the
>> first time.
>
> Okay, so `gnus-registry-clear' should probably also run
> `gnus-registry-unload-hook'. You're not expecting the registry to be
> doing it's thing when you've shut down Gnus, but are using debbugs,
> right?
>
> Would you try this definition:
>
> (defun gnus-registry-clear ()
>   "Clear the registry."
>   (setq gnus-registry-db nil)
>   (gnus-registry-unload-hook))
>
> Huh, right after the definition of `gnus-registry-unload-hook' is this
> line:
>
> (add-hook 'gnus-registry-unload-hook 'gnus-registry-unload-hook)

Added by RMS in 2004! Still don't see what it's supposed to do --
there's no such hook, and it's never called.