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bug#55574: 28.1; desktop-kill not included in kill-emacs-hook anymore


From: tanzer
Subject: bug#55574: 28.1; desktop-kill not included in kill-emacs-hook anymore
Date: Sun, 22 May 2022 13:23:03 -0000

Before Emacs 28, `desktop-kill` was included in `kill-emacs-hook` if
`desktop-save-mode` was enabled.

In Emacs 28, `desktop-kill` is included in `kill-emacs-query-functions`
instead. Therefore the desktop is not saved and the desktop lock not
removed when `kill-emacs` is used to exit Emacs.

Unfortunately, the new behavior is not documented in the NEWS file.

The behavior can be reproduced by evaluating the following elisp
snippet in an Emacs 28.1 instance started with `emacs -Q`:

  (desktop-save-mode 1)
  (message "kill-emacs-hook: %s" kill-emacs-hook)

In Emacs 28.1, it will display:

  "kill-emacs-hook: nil"

In Emacs 27.2, it will display:

  "kill-emacs-hook: (desktop-kill)"

Please revoke the change or document it properly.



In GNU Emacs 28.1 (build 1, aarch64-apple-darwin21.1.0, NS appkit-2113.00 
Version 12.0.1 (Build 21A559))
of 2022-04-04 built on armbob.lan
Windowing system distributor 'Apple', version 10.3.2113
System Description:  macOS 12.4

Configured using:
'configure --with-ns '--enable-locallisppath=/Library/Application
Support/Emacs/${version}/site-lisp:/Library/Application
Support/Emacs/site-lisp' --with-modules'

Configured features:
ACL GMP GNUTLS JSON LIBXML2 MODULES NOTIFY KQUEUE NS PDUMPER THREADS
TOOLKIT_SCROLL_BARS ZLIB

Important settings:
  value of $EMACSLOADPATH: 
/Users/tanzer/.emacs.lib::/Applications/Emacs.app/Contents/Resources/site-lisp:
  value of $LC_CTYPE: UTF-8
  value of $LC_MESSAGES: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  desktop-save-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t

Load-path shadows:
/Users/tanzer/.emacs.lib/custom hides 
/Applications/Emacs-28.1.app/Contents/Resources/lisp/custom

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 desktop
frameset cl-loaddefs cl-lib iso-transl tooltip 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 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 multi-tty make-network-process emacs)

Memory information:
((conses 16 52547 9320)
(symbols 48 6728 1)
(strings 32 18877 2482)
(string-bytes 1 635721)
(vectors 16 14225)
(vector-slots 8 194877 11238)
(floats 8 22 51)
(intervals 56 203 0)
(buffers 992 10))

--
Christian Tanzer






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