From: "Mattias Engdegård" <mattiase@acm.org>
To: Tom Levy <tomlevy93@gmail.com>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, 59576@debbugs.gnu.org
Subject: bug#59576: 29.0.50; named-let doesn't support dynamic binding
Date: Sat, 26 Nov 2022 10:48:54 +0100 [thread overview]
Message-ID: <8DE91C19-0401-4448-82E6-64AA96C677CE@acm.org> (raw)
In-Reply-To: <E1oybec-0001tP-MU@145.40.109.133>
`named-let` being a looping construct, it makes little sense to use it in dynamic binding where TCO opportunities are severely limited. Ideally we should just signal an error if an attempt to use it in dynbound code is made. Users will thank us for that (at least they should, if they have any sense).
Second-best would be to inhibit all TCO in dynbound code but whom would that really benefit?
(Regarding your proposal, generating worse code in lexbind mode isn't a wonderful outcome.)
next prev parent reply other threads:[~2022-11-26 9:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-25 16:34 bug#59576: 29.0.50; named-let doesn't support dynamic binding Tom Levy
2022-11-26 9:48 ` Mattias Engdegård [this message]
2022-11-26 10:36 ` Tom Levy
2022-11-26 17:45 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-21 12:17 ` Mattias Engdegård
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