Subject: bug#23955: 24.5; Unexpected behavior of built-in function `transpose-regions'

From: Gustavo Tavares Cabral <[email-masked]>
Date: Tue, 12 Jul 2016 09:32:49 -0300

================ BEGINNING OF FILE ================
;; ((right))((left))
;; Expected result: ((left))((right))
;;  Current result: ((left)(((right))
;; Emacs version: 24.5
;; Command args: $ emacs -Q

(transpose-regions 6 11 15 19)  ;; should transpose "right" and "left"
================ END OF FILE ================

In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
 of 2016-01-04 on gustavo-VirtualBox
Windowing system distributor `The X.Org Foundation', version 11.0.11701000
System Description:	Ubuntu 14.04.3 LTS

Configured using:
 `configure --prefix=/home/gustavo/prefix'

Important settings:
  value of $LANG: pt_BR.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
  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 messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
nil
Undo!
Beginning of buffer [3 times]
Mark set
End of buffer [2 times]
Making completion list... [2 times]

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
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 help-mode easymenu time-date 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 menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer nadvice 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)

Memory information:
((conses 16 72640 9067)
 (symbols 48 17639 0)
 (miscs 40 44 188)
 (strings 32 9295 4624)
 (string-bytes 1 258944)
 (vectors 16 8991)
 (vector-slots 8 383829 17105)
 (floats 8 65 248)
 (intervals 56 213 24)
 (buffers 960 13)
 (heap 1024 43780 921))