Re: master 45a1653: ; Fix last change to bibtex.el

[Roland Winkler]

On Tue, Nov 17 2020, Glenn Morris wrote:
>> -             (function :tag "Conversion function")))
>> -(make-variable-buffer-local 'bibtex-unify-case-convert)
>> +                 (function :tag "Conversion function"))
>> +  :local t)
>
> After this change:
>
> bibtex-unify-case-convert:
>   Its value is nil
>   Original value was ‘identity’
>
> The "nil" value causes a test failure: https://hydra.nixos.org/build/130666989
>
> (Perhaps defcustom's recently added :local feature, of which this is the
> only user, is broken.)

Why local at all by default?  All other BibTeX customizations by default
apply to all BibTeX buffers.