"Eli Zaretskii" <eliz@gnu.org> writes:

>> Date: Fri, 18 Mar 2022 07:37:44 +0000
>> From: Simon Pugnet <simon@polaris64.net>
>>
>> I recently found out about the decipher package, but when trying it
>> I
>> get the following error: -
>>
>> Debugger entered--Lisp error: (wrong-type-argument bufferp nil)
>>   decipher-stats-buffer(t)
>>   decipher-analyze-buffer()
>>   decipher-analyze()
>>   decipher-digram-list()
>>   funcall-interactively(decipher-digram-list)
>>   command-execute(decipher-digram-list)
>>
>> To reproduce: -
>>
>> 1. emacs -Q
>> 2. M-x decipher
>> 3. Press D to call decipher-digram-list
>
> Thanks.  Does the patch below give good results?
> ...

Hi Eli,

Yes, thank you, those changes appear to fix the issue.

Kind regards,

--
Simon Pugnet
https://www.polaris64.net/