bug#53764: 27.1; shouldn't ~/diary be in diary-mode?

[Andreas Schwab]

On Feb 09 2022, Francesco Potortì wrote:

> Francesco Potortì <pot@gnu.org> writes:
>>>>Do we have a convenience function that says whether we have a match in
>>>>auto-mode-alist?  `set-auto-mode--apply-alist' seems to be the closest I
>>>>can find, and...  it's not that close.  :-/  But I guess it could be
>>>>refactored out of there.
>>>
>>> This one seems to do the job:
>>> (add-to-list 'auto-mode-alist
>>>          (cons diary-file 'diary-mode)
>>>                (lambda (a b) (equal (car a) (car b))))
>>
>>The user may have used a regexp like "diary$", "diary\\'", etc, so that
>>doesn't work.
>
> Sorry, I don't get it.  I am suggeting to add the name of the actual file 
> (the one in diary-file) to the mode alist.  Looking for possible matches is a 
> (small) optimisation. Why do we need a completely reliable matching code?

If you put it at the end, it won't hide any preexisting match.

-- 
Andreas Schwab, schwab@linux-m68k.org
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