From: Eli Zaretskii <eliz@gnu.org>
To: Noam Postavsky <npostavs@users.sourceforge.net>
Cc: ofv@wanadoo.es, 24956@debbugs.gnu.org
Subject: bug#24956: 26.0.50; On Windows, setting PATH in compilation-environment has no effect
Date: Thu, 17 Nov 2016 22:59:06 +0200 [thread overview]
Message-ID: <83k2c1esbp.fsf@gnu.org> (raw)
In-Reply-To: <CAM-tV-8Vnx--QGix-zFaMhoPg_jHcKJE6ggpRWBL=bgPRZhEpA@mail.gmail.com> (message from Noam Postavsky on Thu, 17 Nov 2016 12:59:19 -0500)
> From: Noam Postavsky <npostavs@users.sourceforge.net>
> Date: Thu, 17 Nov 2016 12:59:19 -0500
> Cc: 24956@debbugs.gnu.org
>
> > (let ((compilation-environment (list "PATH=d:\\foo")))
> > (compile "echo %PATH%"))
> >
> > The output is the original contents of PATH. Until recently (June, at
> > least) it was possible to set PATH in compilation-environment and pass
> > it to child processes. On GNU/Linux, it still is.
>
> It seems that my change in 73f0715d "Keep w32 environment settings
> internal only", had an unexpected effect on the way differently cased
> environment variables are handled.
>
> With latest master
>
> (let ((process-environment (cons "PATH=d:\\foo" process-environment)))
> (call-process "cmd" nil '(t t) nil "/C" "echo %PATH%"))
>
> inserts the original PATH contents, whereas
>
> (let ((process-environment (cons "Path=d:\\foo" process-environment)))
> (call-process "cmd" nil '(t t) nil "/C" "echo %PATH%"))
>
> inserts "d:\foo". In Emacs 25.1, or reverting the commit I mentioned,
> the opposite occurs.
I think this is because PATH doesn't exist in the original environment
inherited from the shell, only Path does. We push PATH into the
environment only in w32.c:init_environment (and do the same trick with
ComSpec vs COMSPEC). But since the above-mentioned change, that
function no longer affects process-environment.
So to fix this bug, we need to push PATH and COMSPEC into
process-environment, replacing their camel-case variants.
Does this make sense?
next prev parent reply other threads:[~2016-11-17 20:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-16 22:22 bug#24956: 26.0.50; On Windows, setting PATH in compilation-environment has no effect Óscar Fuentes
2016-11-17 17:59 ` Noam Postavsky
2016-11-17 20:59 ` Eli Zaretskii [this message]
2016-11-17 21:27 ` Noam Postavsky
2016-11-18 9:46 ` Eli Zaretskii
2016-11-18 22:11 ` Noam Postavsky
2016-11-19 7:16 ` Eli Zaretskii
2016-11-21 23:19 ` Noam Postavsky
2016-11-22 16:01 ` Eli Zaretskii
2016-11-22 22:35 ` Noam Postavsky
2016-11-23 16:07 ` Eli Zaretskii
2016-11-27 20:01 ` Óscar Fuentes
2016-11-27 20:13 ` npostavs
2016-11-28 22:53 ` Noam Postavsky
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