On Fri, Mar 15 2024, Ihor Radchenko <yantar92@posteo.net> wrote:

> Leo Butler <Leo.Butler@umanitoba.ca> writes:
>
>>> Leo, may you improve the patch to avoid defining
>>> `org-beamer-frame-environment' when it is not used in all the frames?
>>
>> "all the" should be "any of" in that last sentence.
>
> Indeed.
>
>> How about the attached patch?
>> ...
>> +(defvar org-beamer--frame-environment-used nil
>> +  "Nil unless `org-beamer-frame-environment' is used.
>> +See `org-beamer--frame-environment'.")
>
> I'd prefer to keep this information in the INFO channel.
> It will be more consistent.

See attached.

Leo