GNU bug report logs - #61781
28.2; (setq-default indent-tabs-mode nil) causes weird next-line behavior in *Help*

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Spencer Baugh <sbaugh <at> janestreet.com>
Subject: bug#61781: closed (Re: bug#61781: 28.2; (setq-default
 indent-tabs-mode nil) causes weird next-line behavior in *Help*)
Date: Tue, 12 Sep 2023 13:52:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#61781: 28.2; (setq-default indent-tabs-mode nil) causes weird next-line behavior in *Help*

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 61781 <at> debbugs.gnu.org.

-- 
61781: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=61781
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Spencer Baugh <sbaugh <at> janestreet.com>
Cc: 61781-done <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#61781: 28.2; (setq-default indent-tabs-mode nil) causes weird
 next-line behavior in *Help*
Date: Tue, 12 Sep 2023 06:51:21 -0700

Spencer Baugh <sbaugh <at> janestreet.com> writes:

> I managed to reproduce this in Emacs 28 even without indent-tabs-mode,
> but it was fixed in Emacs 29 in c825c825256475ac5c74882811a44228140f18ee
> by changing the help-key-binding face to draw a thinner box.
> 1b30b4dbc0dcaac02e5a15ff53da476e4680aced actually adds a comment
> describing exactly this issue and how the previous change fixed it :)
>
> So this can be closed.

Thanks for reporting back.  I'm therefore closing this bug report.

[Message part 3 (message/rfc822, inline)]

From: Spencer Baugh <sbaugh <at> janestreet.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.2; (setq-default indent-tabs-mode nil) causes weird next-line
 behavior in *Help*
Date: Fri, 24 Feb 2023 17:32:09 -0500

From emacs -Q:

1. M-: (setq-default indent-tabs-mode nil) RET
2. Open up a help buffer, e.g. C-x 4 C-h
3. Move point to the link for the first binding (find-file-other-window)
4. C-n
5. Observe that in addition to moving down, point also moves back one
   column (as if we had hit C-b).

Without indent-tabs-mode set to nil, next-line stays in the same column.

In GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.15.12, Xaw scroll bars)
 of 2023-02-09 built on myhost
Repository revision: 739b5d0e52d83ec567bd61a5a49ac0e93e0eb469
Repository branch: HEAD
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: CentOS Linux 7 (Core)

Configured using:
 'configure --with-x-toolkit=lucid --without-gpm --without-gconf
 --without-selinux --without-imagemagick --with-modules --with-gif=no
 --with-cairo --with-rsvg'

Configured features:
CAIRO DBUS FREETYPE GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LIBXML2
MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF
TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM LUCID ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Help

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-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
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
rfc822 mml mml-sec epa derived epg rfc6068 epg-config gnus-util rmail
rmail-loaddefs auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache json map text-property-search time-date
subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils help-mode
cl-loaddefs cl-lib iso-transl tooltip eldoc paren electric uniquify
ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer cl-generic cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932
hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice button
loaddefs faces cus-face macroexp files window text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote threads dbusbind inotify
dynamic-setting system-font-setting font-render-setting cairo x-toolkit
x multi-tty make-network-process emacs)

Memory information:
((conses 16 52274 9662)
 (symbols 48 6734 1)
 (strings 32 19259 922)
 (string-bytes 1 634660)
 (vectors 16 12973)
 (vector-slots 8 180318 12801)
 (floats 8 28 113)
 (intervals 56 334 1)
 (buffers 992 12)
 (heap 1024 12312 3225))

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