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bug#47146: 27.0.50; Unexpected indentation for pcase forms in emacs-lisp
From: |
Stefan Monnier |
Subject: |
bug#47146: 27.0.50; Unexpected indentation for pcase forms in emacs-lisp-mode |
Date: |
Thu, 18 Mar 2021 09:51:30 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
>> Starting Emacs with:
>>
>> $ emacs -Q
>>
>> I get the following indentation:
>>
>> (defun word (arg)
>> (pcase arg
>> ('love
>> 'amour)
>> ('always
>> 'toujours)
>> ('if
>> 'si)
>> ('emacs
>> 'emacs)))
>
> I guess `lisp-indent-calc-next' is interpreting the "('if" as if it were
> "(if"?
Looks like it, indeed.
> I must admit I have some difficulties in following the logic in that
> function, perhaps Stefan has some insights here (added to CCs).
I'm not very familiar with our Lisp indentation code, I'm afraid (so
much so that I often feel like replacing it with one based on SMIE, tho
I luckily recognize it as NIH-syndrome so I managed to resist the
temptation so far).
Stefan