GNU bug report logs - #72230
29.4; Cursor Disappears with Hebrew Text

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

From: hermann sorgel <hermannsorgel <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.4; Cursor Disappears with Hebrew Text
Date: Sun, 21 Jul 2024 17:20:50 +0300

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

I'm encountering an issue with cursor behavior in Emacs, and I'm hoping
someone can help me resolve it.

When the cursor hovers over Hebrew text, it becomes invisible. Here are a
few facts I've observed:
- This only occurs with the cursor type set to 'bar'.
- The "box" and other cursor types work without issues.
- The "bar" cursor becomes visible if I make its size huge, like '(bar .
10).
- There's a similar, but slightly different issue with Arabic text.

The issue was reproduced with Emacs 29.3 for Mac and emacs-plus 29.4, on
macOS Sonoma 14.5 (23F79). Changing font and bidi settings haven't affected
the issue. Neither has --no-init-file.

Short video with demonstration
<https://e.pcloud.link/publink/show?code=XZIDjgZ3QLO9BNemLm4rGJp1Venlhq0PeI7>

Text file from video
<https://gist.github.com/hermannsorgel/a2a7de12dab858bb17da35b822721702>

Please let me know if I'm missing something.

In GNU Emacs 29.4 (build 1, aarch64-apple-darwin23.5.0, NS
 appkit-2487.60 Version 14.5 (Build 23F79)) of 2024-07-21 built on
 Sorgel-MBP
Windowing system distributor 'Apple', version 10.3.2487
System Description:  macOS 14.5

Configured using:
 'configure --disable-dependency-tracking --disable-silent-rules
 --enable-locallisppath=/opt/homebrew/share/emacs/site-lisp
 --infodir=/opt/homebrew/Cellar/emacs-plus <at> 29/29.4/share/info/emacs
 --prefix=/opt/homebrew/Cellar/emacs-plus <at> 29/29.4 --with-xml2
 --with-gnutls --without-compress-install --without-dbus
 --without-imagemagick --with-modules --with-rsvg --with-ns
 --disable-ns-self-contained 'CFLAGS=-Os -w -pipe
 -mmacosx-version-min=14
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX14.sdk -O2
 -DFD_SETSIZE=10000 -DDARWIN_UNLIMITED_SELECT'
 'CPPFLAGS=-I/opt/homebrew/opt/icu4c/include
 -I/opt/homebrew/opt/sqlite/include -I/opt/homebrew/opt/readline/include
 -isystem/opt/homebrew/include -F/opt/homebrew/Frameworks
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX14.sdk'
 'LDFLAGS=-L/opt/homebrew/opt/icu4c/lib -L/opt/homebrew/opt/sqlite/lib
 -L/opt/homebrew/opt/readline/lib -L/opt/homebrew/lib
 -F/opt/homebrew/Frameworks -Wl,-headerpad_max_install_names
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX14.sdk''

Configured features:
ACL GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY KQUEUE NS
PDUMPER PNG RSVG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER
XIM ZLIB

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

Major mode: Fundamental

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
  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 puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date subr-x mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
thingatpt vc-git diff-mode easy-mmode vc-dispatcher cl-loaddefs cl-lib
rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win 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 seq 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
theme-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 kqueue cocoa ns lcms2
multi-tty make-network-process emacs)

Memory information:
((conses 16 43275 6299)
 (symbols 48 5649 0)
 (strings 32 15396 2057)
 (string-bytes 1 443058)
 (vectors 16 11570)
 (vector-slots 8 175067 6803)
 (floats 8 23 53)
 (intervals 56 298 0)
 (buffers 984 12))

[Message part 2 (text/html, inline)]

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