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bug#63103: 30.0.50; nconc compiler optimization breaks user packages
From: |
Mattias Engdegård |
Subject: |
bug#63103: 30.0.50; nconc compiler optimization breaks user packages |
Date: |
Thu, 27 Apr 2023 14:28:58 +0200 |
27 apr. 2023 kl. 12.42 skrev Daniel Mendler <mail@daniel-mendler.de>:
> I think it is
> kind of nice that `nconc' can be used as a tool to turn a proper list
> into an improper list and vice versa.
It's a bit obscure, though --
(setcdr (last X) nil)
is a lot clearer than
(nconc X nil)
and when the latter is preferred for performance, a comment might be polite to
the reader.
Anyway, a fix has been pushed to master, and the manual entry for `nconc` got
an extra example.
bug#63103: 30.0.50; nconc compiler optimization breaks user packages, Maks, 2023/04/27