GNU bug report logs - #16795
24.3.50; Ctrl-D doesn't delete active region with delete-selection-mode on

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

From: yynyygy <at> gmail.com
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50;
 Ctrl-D doesn't delete active region with delete-selection-mode on
Date: Tue, 18 Feb 2014 19:09:43 +0800

When delete-selection-mode is on and the region is active, Ctrl-D simply
deletes the char under cursor while the expected behavior is deleting
the whole region as in Emacs 24.3.



In GNU Emacs 24.3.50.1 (i686-pc-linux-gnu, GTK+ Version 3.8.7)
 of 2014-02-18 on gentoo
Windowing system distributor `The X.Org Foundation', version 11.0.11403000
Configured using:
 `configure --prefix=/usr/local/emacs/'

Important settings:
  value of $LC_COLLATE: C
  value of $LC_CTYPE: zh_CN.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  delete-selection-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e p o r <tab> C-g M-x d e l e <tab> s e <tab> 
<return> M-x r e p o r <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Quit
Delete-Selection mode enabled

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util help-fns mail-prsvr mail-utils cus-start cus-load delsel
time-date china-util tooltip electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode prog-mode register page
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vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
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loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
gfilenotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

Message #8 received at 16795 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: yynyygy <at> gmail.com
Cc: 16795 <at> debbugs.gnu.org
Subject: Re: bug#16795: 24.3.50;
 Ctrl-D doesn't delete active region with delete-selection-mode on
Date: Tue, 18 Feb 2014 13:15:27 -0500

> When delete-selection-mode is on and the region is active, Ctrl-D simply
> deletes the char under cursor while the expected behavior is deleting
> the whole region as in Emacs 24.3.

Indeed, good catch.  I install the patch below which should fix it.


        Stefan


=== modified file 'lisp/delsel.el'
--- lisp/delsel.el	2014-02-10 01:34:22 +0000
+++ lisp/delsel.el	2014-02-18 18:11:58 +0000
@@ -181,6 +181,9 @@
 (put 'yank 'delete-selection 'yank)
 (put 'clipboard-yank 'delete-selection 'yank)
 (put 'insert-register 'delete-selection t)
+;; delete-backward-char and delete-forward-char already delete the selection by
+;; default, but not delete-char.
+(put 'delete-char 'delete-selection 'supersede)
 
 (put 'reindent-then-newline-and-indent 'delete-selection t)
 (put 'newline-and-indent 'delete-selection t)

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