Max Nikulin <manikulin@gmail.com> writes:

>> More accurate error can be found after setting calendar-debug-sexp to t.
>> I got the following backtrace clearly indicating lexical scope issue:
>> 
>> Debugger entered--Lisp error: (void-variable entry)
>>    (diary-float t 2 1)
>>    (let ((entry "") (date '(4 5 2022))) (diary-float t 2 1))
>>    (eval (let ((entry "") (date '(4 5 2022))) (diary-float t 2 1)) t)
>
> It looks like the source of the problem with unit tests that I faced 
> yesterday trying to look closer at the bug with daylight saving time in 
> agenda.

I guess we can permanently bind calendar-debug-sexp to non-nil in tests.
It should help if we encounter diary-related issues in future.

WDYT?