Subject: Re: bug#60006: 28.2; C-h f reports wrong version

From: Akib Azmain Turja <[email-masked]>
Date: Mon, 12 Dec 2022 22:16:59 +0600

Eli Zaretskii <[email-masked]> writes:

>> From: Ikumi Keita <[email-masked]>
>> Date: Mon, 12 Dec 2022 22:42:32 +0900
>> 
>> C-h f reports wrong version when `always' was introduced.
>> 
>> [How to reproduce]
>> 1. emacs-28.2 -Q
>> 2. Type C-h f always RET
>> 3. Then *Help* buffer says:
>>   Probably introduced at or before Emacs version 1.1.

For me, it is: "Probably introduced at or before Emacs version 25.1."

>
> That's why it says "Probably".  The method of finding out the first
> release where the symbol appeared is a heuristic, and it can sometimes
> fail in ridiculous ways.

Just out of curiosity, what heuristic exactly?

-- 
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