bug#56011: 29.0.50; hl-line-mode not showing on bottom line after RET

bug#56011: 29.0.50; hl-line-mode not showing on bottom line after RET

[Jean Louis]

When I turn on hl-line-mode and press RET while being on the bottom line
in empty line, by pressing further RET I cannot see highlighted line
which is expected to be seen. If I go back line up, the highlighted line
will appear. Again if I go with C-n down to bottom empty line and keep
pressing RET, I do not see highlighted line which is expected to be seen.


In GNU Emacs 29.0.50 (build 8, x86_64-pc-linux-gnu, X toolkit, cairo version 1.17.6, Xaw3d scroll bars)
 of 2022-06-15 built on protected.rcdrun.com
Repository revision: b090dbdae802b72c6c6de60c61c8487539acf197
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
System Description: Parabola GNU/Linux-libre

Configured using:
 'configure --with-x-toolkit=lucid'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY
PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
WEBP X11 XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: @im=exwm-xim
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  hl-line-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  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
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media rmc puny
dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg
rfc6068 epg-config gnus-util text-property-search time-date seq gv
subr-x byte-opt bytecomp byte-compile cconv mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs
cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
hl-line 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 nadvice simple cl-generic indonesian philippine 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 abbrev obarray oclosure
cl-preloaded button loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads dbusbind
inotify lcms2 dynamic-setting system-font-setting font-render-setting
cairo x-toolkit xinput2 x multi-tty make-network-process emacs)

Memory information:
((conses 16 47329 8050)
 (symbols 48 6283 1)
 (strings 32 17829 1453)
 (string-bytes 1 562174)
 (vectors 16 12223)
 (vector-slots 8 172881 9414)
 (floats 8 23 71)
 (intervals 56 262 0)
 (buffers 992 11))

-- 
Thanks,
Jean Louis

Take action in Free Software Foundation campaigns:
https://www.fsf.org/campaigns

bug#56011: 29.0.50; hl-line-mode not showing on bottom line after RET

[Eli Zaretskii]

> From: Jean Louis <bugs@gnu.support>
> Date: Thu, 16 Jun 2022 07:40:49 +0300
> 
> When I turn on hl-line-mode and press RET while being on the bottom line
> in empty line, by pressing further RET I cannot see highlighted line
> which is expected to be seen. If I go back line up, the highlighted line
> will appear. Again if I go with C-n down to bottom empty line and keep
> pressing RET, I do not see highlighted line which is expected to be seen.

There's no line at EOB in this case.  It's an illusion, created by the
fact that we display the cursor there.  If you type "C-x =", you will
see that point is beyond the last character of the file in that case,
which is the preceding newline.  So there's nothing to highlight.

This is not a bug.  We could mention this in the doc string if it will
help, but I think that otherwise we should close this bug.

bug#56011: 29.0.50; hl-line-mode not showing on bottom line after RET

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> This is not a bug.  We could mention this in the doc string if it will
> help, but I think that otherwise we should close this bug.

I've now done this on the release branch.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#56011: 29.0.50; hl-line-mode not showing on bottom line after RET

[Jean Louis]

* Eli Zaretskii <eliz@gnu.org> [2022-06-16 08:45]:
> > From: Jean Louis <bugs@gnu.support>
> > Date: Thu, 16 Jun 2022 07:40:49 +0300
> > 
> > When I turn on hl-line-mode and press RET while being on the bottom line
> > in empty line, by pressing further RET I cannot see highlighted line
> > which is expected to be seen. If I go back line up, the highlighted line
> > will appear. Again if I go with C-n down to bottom empty line and keep
> > pressing RET, I do not see highlighted line which is expected to be seen.
> 
> There's no line at EOB in this case.  It's an illusion, created by the
> fact that we display the cursor there.  If you type "C-x =", you will
> see that point is beyond the last character of the file in that case,
> which is the preceding newline.  So there's nothing to highlight.
> 
> This is not a bug.  We could mention this in the doc string if it will
> help, but I think that otherwise we should close this bug.

I understand it now.