From: Wolfgang Jenkner <wjenkner@inode.at>
To: Michael Heerdegen <michael_heerdegen@web.de>
Cc: emacs-devel@gnu.org
Subject: Re: setenv and let-binding process-environment
Date: Sun, 20 Mar 2016 15:10:46 +0100 [thread overview]
Message-ID: <85r3f5kzgp.fsf@inode.at> (raw)
In-Reply-To: 87wpoyueim.fsf@web.de
On Sun, Mar 20 2016, Michael Heerdegen wrote:
> (let ((process-environment process-environment))
> (setenv "A" "2"))
This just establishes a new binding to the same object, so the code
works as expected.
The following would give the desired result (but, as you said, consing
the new value to the beginning of process-environment is better).
(let ((process-environment (copy-sequence process-environment)))
(setenv "A" "2"))
next prev parent reply other threads:[~2016-03-20 14:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-20 1:25 setenv and let-binding process-environment Michael Heerdegen
2016-03-20 14:10 ` Wolfgang Jenkner [this message]
2016-03-20 14:39 ` Michael Heerdegen
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