GNU bug report logs - #50214
28.0.50; cl-struct changes may affect user packages in the wild

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Philipp <p.stephani2 <at> gmail.com>
Cc: Adam Porter <adam <at> alphapapa.net>, 50214 <at> debbugs.gnu.org
Subject: bug#50214: 28.0.50; cl-struct changes may affect user packages in the wild
Date: Mon, 22 Aug 2022 16:35:30 +0200

Philipp <p.stephani2 <at> gmail.com> writes:

>> Unfortunately, I know of no other way to implement what ts.el does
>> without modifying the accessors, which requires accessing the internal
>> struct details after it is defined.
>
> I haven't checked the code in detail, but AIUI ts.el tries to initialize structure members lazily?  Why not just use a wrapper function for that?
>
> (defun ts-hour (ts)
>   (or (ts--hour ts)
>       (setf (ts--hour ts) (string-to-number (format-time-string "%H" (ts-unix ts)))))
>
> Here ts--hour is the actual accessor, which is private and shouldn't be used outside of ts.el.

Adam, does this suggestion work for you?

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