bug#64401: 28.1; Desktop restoration

[Tom Hunt]

Often desktop files contain remote (TRAMP) buffers. Such buffers might
originally be open on hosts that are not currently accessible for
whatever reason.

When opening a desktop file, either automatically on startup or via
desktop-read, emacs will hang on trying to open such files. If the hang
is aborted via C-g, the entire desktop load will be aborted and other
buffers (which might still be accessible) are not opened.

Ideally, buffers requiring connections to unreachable hosts should be
skipped and the remainder of the desktop session opened.


In GNU Emacs 28.1 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.24.34, 
cairo version 1.17.6)
 of 2022-07-20 built on buildvm-x86-04.iad2.fedoraproject.org
Windowing system distributor 'The X.Org Foundation', version 11.0.12014000
System Description: Fedora Linux 37 (MATE-Compiz)

Configured using:
 'configure --build=x86_64-redhat-linux-gnu
 --host=x86_64-redhat-linux-gnu --program-prefix=
 --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
 --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
 --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
 --libexecdir=/usr/libexec --localstatedir=/var
 --sharedstatedir=/var/lib --mandir=/usr/share/man
 --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg --with-png
 --with-rsvg --with-tiff --with-xpm --with-x-toolkit=gtk3 --with-gpm=no
 --with-xwidgets --with-modules --with-harfbuzz --with-cairo --with-json
 --with-native-compilation build_alias=x86_64-redhat-linux-gnu
 host_alias=x86_64-redhat-linux-gnu CC=gcc 'CFLAGS=-DMAIL_USE_LOCKF -O2
 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches
 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
 -Wp,-D_GLIBCXX_ASSERTIONS
 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong
 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
 LDFLAGS=-Wl,-z,relro
 PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
X11 XDBE XIM XPM XWIDGETS GTK3 ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix

Major mode: Org

Minor modes in effect:
  desktop-save-mode: t
  global-flycheck-mode: t
  pyvenv-mode: t
  shell-dirtrack-mode: t
  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
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: org-auto-fill-function
  transient-mark-mode: t

Load-path shadows:
/home/tom/.emacs.d/elpa/transient-20230601.1854/transient hides 
/usr/share/emacs/28.1/lisp/transient

Features:
(shadow sort mail-extr emacsbug sendmail js imenu cc-mode cc-fonts
cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
cl-print shortdoc misearch multi-isearch mule-util tramp-cmds dired-aux
autorevert filenotify slime apropos arc-mode archive-mode hyperspec
sh-script smie executable vc-hg vc-git vc-bzr vc-dispatcher rfc2104
tramp-cache conf-mode org-element avl-tree ol-eww eww xdg url-queue
mm-url ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect gnus-search
eieio-opt speedbar ezimage dframe gnus-art mm-uu mml2015 mm-view
mml-smime smime dig gnus-sum shr kinsoku svg dom gnus-group gnus-undo
gnus-start gnus-dbus dbus gnus-cloud nnimap nnmail mail-source utf7
netrc nnoo gnus-spec gnus-int gnus-range message rmc puny rfc822 mml
mml-sec epa derived epg rfc6068 epg-config mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader gnus-win gnus
nnheader gnus-util rmail rmail-loaddefs rfc2047 rfc2045 ietf-drums
mail-utils mm-util mail-prsvr ol-docview doc-view jka-compr image-mode
exif dired dired-loaddefs ol-bibtex ol-bbdb ol-w3m ol-doi org-link-doi
org org-macro org-footnote org-pcomplete org-list org-faces org-entities
noutline outline org-version ob-python ob ob-tangle org-src ob-ref
ob-lob ob-table ob-exp ob-comint ob-core ob-eval org-table oc-basic
bibtex ol org-keys oc org-loaddefs cal-menu calendar cal-loaddefs
desktop frameset web-mode disp-table org-crypt org-compat org-macs
flycheck find-func dash cl-extra yasnippet highlight-indentation
flymake-proc flymake warnings thingatpt company-capf company help-fns
radix-tree help-mode elpy advice edmacro kmacro elpy-rpc pyvenv eshell
esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg esh-module esh-groups
esh-util elpy-shell elpy-profile elpy-django s elpy-refactor diff-mode
easy-mmode python tramp-sh tramp tramp-loaddefs trampver
tramp-integration tramp-compat shell pcomplete parse-time iso8601
time-date ls-lisp format-spec hideshow grep compile text-property-search
comint ansi-color files-x etags fileloop generator xref project ring
cus-edit pp cus-load wid-edit ido finder-inf clang-rename
clang-include-fixer let-alist clang-format xml rx pcase slime-autoloads
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 subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv 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 xwidget-internal dbusbind
inotify dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit x multi-tty make-network-process
native-compile emacs)

Memory information:
((conses 16 673112 31758)
 (symbols 48 41109 5)
 (strings 32 213884 4480)
 (string-bytes 1 6311007)
 (vectors 16 67995)
 (vector-slots 8 1165607 55871)
 (floats 8 439 83)
 (intervals 56 1472 168)
 (buffers 992 24))