bug#50970: 29.0.50; Italics cause fill column indicator misalignment

[Carlos Pita]

I believe the attached screenshot describes the issue well enough.

Best regards,
Carlos

—

In GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin20.6.0, NS
appkit-2022.60 Version 11.6 (Build 20G165))
 of 2021-10-02 built on Carloss-MacBook-Pro.local
Windowing system distributor 'Apple', version 10.3.2022
System Description:  macOS 11.6

Configured using:
 'configure --disable-dependency-tracking --disable-silent-rules
 --enable-locallisppath=/usr/local/share/emacs/site-lisp
 --infodir=/usr/local/Cellar/emacs-plus@28/28.0.50/share/info/emacs
 --prefix=/usr/local/Cellar/emacs-plus@28/28.0.50 --with-xml2
 --with-gnutls --without-dbus --with-imagemagick --with-modules
 --with-rsvg --with-ns --disable-ns-self-contained'

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

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

Major mode: Python

Minor modes in effect:
  shell-dirtrack-mode: t
  display-fill-column-indicator-mode: t
  flymake-mode: t
  recentf-mode: t
  my-fill-mode: t
  delete-selection-mode: t
  winner-mode: t
  org-roam-db-autosync-mode: t
  outline-minor-mode: t
  ns-auto-titlebar-mode: t
  ido-ubiquitous-mode: t
  ido-everywhere: t
  global-company-mode: t
  company-mode: t
  electric-pair-mode: t
  cua-mode: t
  show-paren-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-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
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: python-do-auto-fill
  transient-mark-mode: t

Load-path shadows:
/Users/carlos/.emacs.d/elpa/magit-20210928.1325/magit-section-pkg
hides /Users/carlos/.emacs.d/elpa/magit-section-20210829.1849/magit-section-pkg
/Users/carlos/.emacs.d/elpa/transient-20210920.1038/transient hides
/usr/local/Cellar/emacs-plus@28/28.0.50/share/emacs/29.0.50/lisp/transient

Features:
(shadow sort flyspell ispell mail-extr emacsbug message rfc822 mml
mml-sec epa derived epg rfc6068 epg-config gnus-util rmail
rmail-loaddefs mm-decode mm-bodies mm-encode mailabbrev gmm-utils
mailheader sendmail mail-utils vc-git diff-mode vc-dispatcher python
tramp-sh tramp tramp-loaddefs trampver tramp-integration files-x
tramp-compat shell parse-time iso8601 ls-lisp dired-aux doc-view
jka-compr image-mode exif display-fill-column-indicator checkdoc
lisp-mnt dired-x dired dired-loaddefs flymake-proc flymake compile
text-property-search warnings thingatpt visual-fill-column recentf
tree-widget exec-path-from-shell doom-themes-ext-org
doom-themes-ext-visual-bell face-remap cl-extra help-mode
company-oddmuse company-keywords company-etags etags fileloop xref
project company-gtags company-dabbrev-code company-dabbrev company-files
company-clang company-capf company-cmake company-semantic
company-template company-bbdb doom-solarized-light-theme doom-themes
doom-themes-base delsel winner org-roam-migrate org-roam-mode
org-roam-capture org-roam-node org-roam-db org-roam-utils
org-roam-compat org-roam org-capture org-element avl-tree generator
org-id org-refile org ob ob-tangle ob-ref ob-lob ob-table ob-exp
org-macro org-footnote org-src ob-comint org-pcomplete pcomplete comint
ansi-color ring org-list org-faces org-entities time-date noutline
outline easy-mmode org-version ob-emacs-lisp ob-core ob-eval org-table
ol org-keys oc org-compat org-macs org-loaddefs format-spec find-func
cal-menu calendar cal-loaddefs emacsql-sqlite url-http url-auth
mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums mail-prsvr url-gw
nsm rmc puny advice emacsql emacsql-compiler magit-section rx f dash s
ns-auto-titlebar ido-completing-read+ memoize cus-edit pp wid-edit
minibuf-eldef ido company edmacro kmacro pcase elec-pair cua-base
cus-load finder-inf info package browse-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie url-domsuf url-util
mailcap url-handlers url-parse auth-source cl-seq eieio eieio-core
cl-macs eieio-loaddefs password-cache json map url-vars seq gv subr-x
byte-opt bytecomp byte-compile cconv cl-loaddefs cl-lib paren iso-transl
tooltip eldoc 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 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 kqueue cocoa ns lcms2
multi-tty make-network-process emacs)

Memory information:
((conses 16 420243 16840)
 (symbols 48 28975 3)
 (strings 32 129525 3341)
 (string-bytes 1 3752515)
 (vectors 16 46182)
 (vector-slots 8 551119 16026)
 (floats 8 378 233)
 (intervals 56 695 0)
 (buffers 992 20))

Fill indicator.png
Description: PNG image