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bug#25208: 24.5; man output uses wrong width

From: Olaf Dietsche
Subject: bug#25208: 24.5; man output uses wrong width
Date: Thu, 15 Dec 2016 14:08:13 +0100

I use a wide display and Emacs full-screen.

- emacs -Q
- Make the Emacs frame full-screen, so it is wider than high and shows
  only one window.
- M-x man RET ps RET -- any command works

Now the frame will be split into two windows side by side, one showing
the man page of `ps`. The man page will contain long lines, which are
truncated instead of wrapped around. You can see the whole lines, when
you scroll horizontally, of course.

This will not happen, if the frame is already split horizontally in two
equal wide windows. When you move the vertical divider to the left or
right and invoke another man command, you can see, that man always uses
the width of the starting window instead of the target (displaying)

In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
 of 2016-04-17 on lgw01-04, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11803000
System Description:     Ubuntu 16.04 LTS

Configured using:
 `configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib
 --libexecdir=/usr/lib --localstatedir=/var/lib
 --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes
 --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars
 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat
 -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro''

Important settings:
  value of $LC_MESSAGES: C
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

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.
Note: file is write protected
Type C-x 1 to delete the help window.
Loading /home/olaf/dot-files/emacs/init/mail.el (source)...done

Load-path shadows:
None found.

(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
mail-prsvr mail-utils find-func help-mode easymenu help-fns 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 73052 6703)
 (symbols 48 17689 0)
 (miscs 40 40 113)
 (strings 32 9388 4593)
 (string-bytes 1 257769)
 (vectors 16 9040)
 (vector-slots 8 384603 16331)
 (floats 8 66 294)
 (intervals 56 237 22)
 (buffers 960 13)
 (heap 1024 19204 957))

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