From: Lars Ingebrigtsen <larsi@gnus.org>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: Emacs developers <emacs-devel@gnu.org>
Subject: Re: master 5252c45: Initialise unread buffer
Date: Mon, 20 Sep 2021 16:44:59 +0200 [thread overview]
Message-ID: <87a6k7i9w4.fsf@gnus.org> (raw)
In-Reply-To: <0344BE6C-99E1-4DBB-ABD7-454DCF6C012B@acm.org> ("Mattias Engdegård"'s message of "Mon, 20 Sep 2021 12:16:24 +0200")
Mattias Engdegård <mattiase@acm.org> writes:
> It's more fun actually. Thanks to the fixed reader bug, the
> lexical-binding cookie is now honoured in loadup.el. That causes Emacs
> to be dumped with `lexical-binding` set to t which as a consequence
> becomes the new default.
Heh. The reader bug was a case of a bug leading to desirable behaviour
(accidentally). They're the worst.
> Actually, any code in `ert-deftest` uses dynamic binding (until the
> accidental switch), regardless of the file cookie. Not many people
> know that.
I did not know that.
> I'm not sure why the byte-code interpreter makes a copy of the byte
> code for each function call. It certainly doesn't help the lamentably
> high function call overhead a bit.
Huh.
> There's a number of things to fix here, but this message is too long
> already. Thanks for your interest! There are books for sale in the
> foyer.
:-)
Amazing debugging.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2021-09-20 14:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210919142251.2698.98689@vcs0.savannah.gnu.org>
[not found] ` <20210919142252.B0B1520ABE@vcs0.savannah.gnu.org>
2021-09-19 14:26 ` master 5252c45: Initialise unread buffer Lars Ingebrigtsen
2021-09-19 14:56 ` Lars Ingebrigtsen
2021-09-19 15:39 ` Mattias Engdegård
2021-09-19 15:41 ` Lars Ingebrigtsen
2021-09-20 10:16 ` Mattias Engdegård
2021-09-20 10:30 ` tomas
2021-09-20 14:44 ` Lars Ingebrigtsen [this message]
2021-10-01 19:59 ` Stefan Monnier
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