GNU bug report logs - #79840
31.0.50; user-error message is printed with newline in *Messages* buffer

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Daniel Mendler <mail <at> daniel-mendler.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; user-error message is printed with newline in *Messages*
 buffer
Date: Sat, 15 Nov 2025 17:05:12 +0100

There is a discrepancy in how errors are printed in the *Messages*
buffer.

1. Define the following two commands:

    (defun test-error ()
      (interactive)
      (error "message"))

    (defun test-user-error ()
      (interactive)
      (user-error "message"))

2. Run the commands:

    M-x test-error
    M-x test-user-error

3. The output in the *Messages* buffer looks like this:

    test-error: message
    test-user-error: 
    message

I don't recall that there has been such a difference in the past. Is
this a regression, maybe from b03f11d9ac867833a504a2184620e531fbe43a44?
I've compiled Emacs a few days ago from Emacs master.

Thanks!

In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.49, cairo version 1.18.4) of 2025-11-14
Windowing system distributor 'The X.Org Foundation', version 11.0.12101016
System Description: Debian GNU/Linux 13 (trixie)

Configured using:
 'configure --prefix=$HOME/.local/share/emacs
 --without-compress-install --with-tree-sitter --with-native-compilation
 --with-dbus --without-selinux --without-threads --disable-gc-mark-trace
 --without-gsettings --without-gpm --with-cairo --with-cairo-xcb
 --with-xinput2 --with-x-toolkit=gtk3 --without-toolkit-scroll-bars
 'CFLAGS=-O3 -mtune=native -march=native''

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS HARFBUZZ JPEG LIBOTF LIBSYSTEMD
LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP
SOUND SQLITE3 TIFF TREE_SITTER WEBP X11 XDBE XIM XINERAMA XINPUT2 XPM
XRANDR GTK3 ZLIB

Message #8 received at 79840 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Daniel Mendler <mail <at> daniel-mendler.de>
Cc: 79840 <at> debbugs.gnu.org
Subject: Re: bug#79840: 31.0.50;
 user-error message is printed with newline in *Messages* buffer
Date: Sat, 15 Nov 2025 19:30:46 +0200

> Date: Sat, 15 Nov 2025 17:05:12 +0100
> From:  Daniel Mendler via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> There is a discrepancy in how errors are printed in the *Messages*
> buffer.
> 
> 1. Define the following two commands:
> 
>     (defun test-error ()
>       (interactive)
>       (error "message"))
> 
>     (defun test-user-error ()
>       (interactive)
>       (user-error "message"))
> 
> 2. Run the commands:
> 
>     M-x test-error
>     M-x test-user-error
> 
> 3. The output in the *Messages* buffer looks like this:
> 
>     test-error: message
>     test-user-error: 
>     message
> 
> I don't recall that there has been such a difference in the past. Is
> this a regression, maybe from b03f11d9ac867833a504a2184620e531fbe43a44?
> I've compiled Emacs a few days ago from Emacs master.

Thanks, should be fixed now.

Message #13 received at 79840-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: mail <at> daniel-mendler.de
Cc: 79840-done <at> debbugs.gnu.org
Subject: Re: bug#79840: 31.0.50;
 user-error message is printed with newline in *Messages* buffer
Date: Sat, 29 Nov 2025 13:01:52 +0200

> Cc: 79840 <at> debbugs.gnu.org
> Date: Sat, 15 Nov 2025 19:30:46 +0200
> From: Eli Zaretskii <eliz <at> gnu.org>
> 
> > Date: Sat, 15 Nov 2025 17:05:12 +0100
> > From:  Daniel Mendler via "Bug reports for GNU Emacs,
> >  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> > 
> > There is a discrepancy in how errors are printed in the *Messages*
> > buffer.
> > 
> > 1. Define the following two commands:
> > 
> >     (defun test-error ()
> >       (interactive)
> >       (error "message"))
> > 
> >     (defun test-user-error ()
> >       (interactive)
> >       (user-error "message"))
> > 
> > 2. Run the commands:
> > 
> >     M-x test-error
> >     M-x test-user-error
> > 
> > 3. The output in the *Messages* buffer looks like this:
> > 
> >     test-error: message
> >     test-user-error: 
> >     message
> > 
> > I don't recall that there has been such a difference in the past. Is
> > this a regression, maybe from b03f11d9ac867833a504a2184620e531fbe43a44?
> > I've compiled Emacs a few days ago from Emacs master.
> 
> Thanks, should be fixed now.

No further comments, so I presume the bug was indeed fixed, and I'm
closing it.

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