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bug#59317: 29.0.50; Feature idea: suppress `message' output in ert batch
From: |
Eli Zaretskii |
Subject: |
bug#59317: 29.0.50; Feature idea: suppress `message' output in ert batch test output |
Date: |
Thu, 17 Nov 2022 09:13:12 +0200 |
> From: Matt Armstrong <matt@rfc20.org>
> Cc: 59317@debbugs.gnu.org
> Date: Wed, 16 Nov 2022 21:51:46 -0800
>
> It looks like the set-message-function(s) hooks are bypassed in
> non-interactive mode. In that case message3_nolog in xdisp.c calls
> message_to_stderr, instead of calling set_message. It is set_message
> that ultimately uses the set-message-function machinery.
>
> After looking at this more I agree with your suspicions. It looks like
> good amount of C level code calls various message functions without
> going through Fmessage. Also, I spot no easy way to modify ert.el to
> temporarily redirect stderr elsewhere. In noninteractive mode Emacs
> seems hard coded to print to stderr.
>
> I proposed this thinking it would be an easy and simple change. At this
> point I'm thinking the effort and complexity here isn't worth it. If
> nobody else wants to champion this idea I'll go ahead and close it.
The only idea I have is to mock-out the relevant functions in the
test.