From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Compiled vs. interpreted ERT test
Date: Thu, 27 Feb 2020 21:18:23 -0500 [thread overview]
Message-ID: <jwvo8tj78y3.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: 87r1yfr7vs.fsf@fastmail.fm
> I opened an issue on the package's Github page but the maintainer says he
> doesn't know how to debug this.[2] So I'm coming here in the hopes someone
> has an idea or a suggestion how to debug this.
I haven't looked at the rest of the code, but the first thing I saw is:
(defmacro wsi-current-lexical-environment ()
"Return the current lexical environment.
If `lexical-binding' is not enabled, return nil.
This macro expands to a Lisp form that evaluates to the current
lexical environment. It works by creating a closure and then
extracting and returning its lexical environment.
This can be used to manually construct closures in that
environment."
`(let ((temp-closure (lambda () t)))
(when (eq (car temp-closure) 'closure)
(cadr temp-closure))))
which clearly assumes the code is interpreted since once compiled,
`temp-closure` is not going to be a list any more (and you won't be
able to extract the lexical env from it).
Stefan
next prev parent reply other threads:[~2020-02-28 2:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 22:19 Compiled vs. interpreted ERT test Joost Kremers
2020-02-28 1:48 ` Noam Postavsky
2020-02-28 2:18 ` Stefan Monnier [this message]
2020-02-28 3:16 ` Stefan Monnier
2020-02-28 8:07 ` Joost Kremers
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