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bug#23999: 25.0.95; Emacs hangs in rectangle-mark-mode with numeric pref


From: Charles A. Roelli
Subject: bug#23999: 25.0.95; Emacs hangs in rectangle-mark-mode with numeric prefix argument to `C-f'
Date: Tue, 19 Dec 2017 20:44:27 +0100

> From: address@hidden (N. Jackson)
> Date: Fri, 15 Jul 2016 19:25:52 -0300
> 
> emacs -Q
> C-<home>      ; Go to top left corner of scratch buffer.
> C-x <SPC>     ; Start a rectangular selection.
> C-3 C-f               ; Extend the selection to the right by 3 characters.
> 
> Expected result:  Emacs creates a rectangular selection one character
> high and three characters wide.
> 
> Actual result:  Emacs hangs. (C-g quits.)
> 
> With debug-on-quit on, I then get:
> 
>     Debugger entered--Lisp error: (quit)
>       rectangle--*-char(forward-char 3 backward-char)
>       rectangle-forward-char(3)
>       funcall-interactively(rectangle-forward-char 3)
>       call-interactively(rectangle-forward-char nil nil)
>       command-execute(rectangle-forward-char)
> 
> On the other hand, the following recipe works as expected:
> 
> emacs -Q
> C-<home>      ; Go to top left corner of scratch buffer.
> C-x <SPC>     ; Start a rectangular selection.
> C-f C-f C-f   ; Extend the selection to the right by 3 characters.
> 
> Note 1:  The exact position in the scratch buffer seems to be unimportant.
> 
> Note 2:  `C-n' with a numeric prefix argument seems to work fine to extend
> the rectangular region downwards.
> 
> Note 3: I see this with the Emacs 25.0.95 pre-test tarball [and with the
> 25.0.90 pre-test for that matter]. The problem is still present in the
> Emacs 25 branch as of earlier this afternoon. I do not see the problem
> with Emacs 24.5.
> 
> Please let me know if any further information is required. Thanks.
> 
> 
> In GNU Emacs 25.0.95.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.9)
>  of 2016-07-15 built on moondust
> Repository revision: 916abe91fd250fc5ed27ec0be7d57421e7908111
> Windowing system distributor 'Fedora Project', version 11.0.11803000
> System Description:   Fedora release 23 (Twenty Three)
> 
> Configured using:
>  'configure --prefix=/home/nlj/local/ --enable-checking=yes,glyphs
>  --enable-check-lisp-object-type 'CFLAGS=-O2 -g3 -gdwarf-4''
> 
> Configured features:
> XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY
> ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
> TOOLKIT_SCROLL_BARS GTK3 X11
> 
> Important settings:
>   value of $LC_MONETARY: en_DK.utf8
>   value of $LC_NUMERIC: en_DK.utf8
>   value of $LC_TIME: en_DK.utf8
>   value of $LANG: en_CA.UTF-8
>   value of $XMODIFIERS: @im=ibus
>   locale-coding-system: utf-8-unix

It's fixed since the fix for Bug#25773 (duplicate of this one) was
pushed.





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