152 lines
7.5 KiB
EmacsLisp
152 lines
7.5 KiB
EmacsLisp
;;; desktop.el patches
|
|
|
|
;;; Fix 28945.
|
|
;;; Replace
|
|
;;; (setq desktop-autosave-was-enabled
|
|
;;; (memq 'desktop-auto-save-set-timer 'window-configuration-change-hook))
|
|
;;; with
|
|
;;; (setq desktop-autosave-was-enabled
|
|
;;; (memq 'desktop-auto-save-set-timer (default-toplevel-value 'window-configuration-change-hook)))
|
|
(defun desktop-read (&optional dirname)
|
|
"Read and process the desktop file in directory DIRNAME.
|
|
Look for a desktop file in DIRNAME, or if DIRNAME is omitted, look in
|
|
directories listed in `desktop-path'. If a desktop file is found, it
|
|
is processed and `desktop-after-read-hook' is run. If no desktop file
|
|
is found, clear the desktop and run `desktop-no-desktop-file-hook'.
|
|
This function is a no-op when Emacs is running in batch mode.
|
|
It returns t if a desktop file was loaded, nil otherwise."
|
|
(interactive)
|
|
(unless noninteractive
|
|
(setq desktop-dirname
|
|
(file-name-as-directory
|
|
(expand-file-name
|
|
(or
|
|
;; If DIRNAME is specified, use it.
|
|
(and (< 0 (length dirname)) dirname)
|
|
;; Otherwise search desktop file in desktop-path.
|
|
(let ((dirs desktop-path))
|
|
(while (and dirs
|
|
(not (file-exists-p
|
|
(desktop-full-file-name (car dirs)))))
|
|
(setq dirs (cdr dirs)))
|
|
(and dirs (car dirs)))
|
|
;; If not found and `desktop-path' is non-nil, use its first element.
|
|
(and desktop-path (car desktop-path))
|
|
;; Default: .emacs.d.
|
|
user-emacs-directory))))
|
|
(if (file-exists-p (desktop-full-file-name))
|
|
;; Desktop file found, but is it already in use?
|
|
(let ((desktop-first-buffer nil)
|
|
(desktop-buffer-ok-count 0)
|
|
(desktop-buffer-fail-count 0)
|
|
(owner (desktop-owner))
|
|
;; Avoid desktop saving during evaluation of desktop buffer.
|
|
(desktop-save nil)
|
|
(desktop-autosave-was-enabled))
|
|
(if (and owner
|
|
(memq desktop-load-locked-desktop '(nil ask))
|
|
(or (null desktop-load-locked-desktop)
|
|
(and (daemonp) (= (length (visible-frame-list)) 1)) ; PATCH
|
|
(not (y-or-n-p (format "Warning: desktop file appears to be in use by PID %s.\n\
|
|
Using it may cause conflicts. Use it anyway? " owner)))))
|
|
(let ((default-directory desktop-dirname))
|
|
(setq desktop-dirname nil)
|
|
(run-hooks 'desktop-not-loaded-hook)
|
|
(unless desktop-dirname
|
|
(message "Desktop file in use; not loaded.")))
|
|
(desktop-lazy-abort)
|
|
;; Temporarily disable the autosave that will leave it
|
|
;; disabled when loading the desktop fails with errors,
|
|
;; thus not overwriting the desktop with broken contents.
|
|
(setq desktop-autosave-was-enabled
|
|
(memq 'desktop-auto-save-set-timer
|
|
;; Use the toplevel value of the hook, in case some
|
|
;; feature makes window-configuration-change-hook
|
|
;; buffer-local, and puts there stuff which
|
|
;; doesn't include our timer.
|
|
(default-toplevel-value
|
|
'window-configuration-change-hook)))
|
|
(desktop-auto-save-disable)
|
|
;; Evaluate desktop buffer and remember when it was modified.
|
|
(setq desktop-file-modtime (nth 5 (file-attributes (desktop-full-file-name))))
|
|
(load (desktop-full-file-name) t t t)
|
|
;; If it wasn't already, mark it as in-use, to bother other
|
|
;; desktop instances.
|
|
(unless (eq (emacs-pid) owner)
|
|
(condition-case nil
|
|
(desktop-claim-lock)
|
|
(file-error (message "Couldn't record use of desktop file")
|
|
(sit-for 1))))
|
|
|
|
(unless (desktop-restoring-frameset-p)
|
|
;; `desktop-create-buffer' puts buffers at end of the buffer list.
|
|
;; We want buffers existing prior to evaluating the desktop (and
|
|
;; not reused) to be placed at the end of the buffer list, so we
|
|
;; move them here.
|
|
(mapc 'bury-buffer
|
|
(nreverse (cdr (memq desktop-first-buffer (nreverse (buffer-list))))))
|
|
(switch-to-buffer (car (buffer-list))))
|
|
(run-hooks 'desktop-delay-hook)
|
|
(setq desktop-delay-hook nil)
|
|
(desktop-restore-frameset)
|
|
(run-hooks 'desktop-after-read-hook)
|
|
(message "Desktop: %s%d buffer%s restored%s%s."
|
|
(if desktop-saved-frameset
|
|
(let ((fn (length (frameset-states desktop-saved-frameset))))
|
|
(format "%d frame%s, "
|
|
fn (if (= fn 1) "" "s")))
|
|
"")
|
|
desktop-buffer-ok-count
|
|
(if (= 1 desktop-buffer-ok-count) "" "s")
|
|
(if (< 0 desktop-buffer-fail-count)
|
|
(format ", %d failed to restore" desktop-buffer-fail-count)
|
|
"")
|
|
(if desktop-buffer-args-list
|
|
(format ", %d to restore lazily"
|
|
(length desktop-buffer-args-list))
|
|
""))
|
|
(unless (desktop-restoring-frameset-p)
|
|
;; Bury the *Messages* buffer to not reshow it when burying
|
|
;; the buffer we switched to above.
|
|
(when (buffer-live-p (get-buffer "*Messages*"))
|
|
(bury-buffer "*Messages*"))
|
|
;; Clear all windows' previous and next buffers, these have
|
|
;; been corrupted by the `switch-to-buffer' calls in
|
|
;; `desktop-restore-file-buffer' (bug#11556). This is a
|
|
;; brute force fix and should be replaced by a more subtle
|
|
;; strategy eventually.
|
|
(walk-window-tree (lambda (window)
|
|
(set-window-prev-buffers window nil)
|
|
(set-window-next-buffers window nil))))
|
|
(setq desktop-saved-frameset nil)
|
|
(if desktop-autosave-was-enabled (desktop-auto-save-enable))
|
|
t))
|
|
;; No desktop file found.
|
|
(let ((default-directory desktop-dirname))
|
|
(run-hooks 'desktop-no-desktop-file-hook))
|
|
(message "No desktop file.")
|
|
nil)))
|
|
|
|
;;; Fix 30421
|
|
;;; Return nil if the PID found is not owned by a process named Emacs.
|
|
;;; This assumes that no other name would be using the desktop file.
|
|
;;; Upstream decided not to do this because of possible clashes when emacs
|
|
;;; process is running remotely. Start desktop-mode in
|
|
;;; `server-after-make-frame-hook' instead (requires Emacs>=27).
|
|
(defun desktop-owner (&optional dirname)
|
|
"Return the PID of the Emacs process that owns the desktop file in DIRNAME.
|
|
Return nil if no desktop file found or no Emacs process is using it.
|
|
DIRNAME omitted or nil means use `desktop-dirname'."
|
|
(let (owner
|
|
(file (desktop-full-lock-name dirname)))
|
|
(and (file-exists-p file)
|
|
(ignore-errors
|
|
(with-temp-buffer
|
|
(insert-file-contents-literally file)
|
|
(goto-char (point-min))
|
|
(setq owner (read (current-buffer)))
|
|
(integerp owner)
|
|
(process-attributes owner)
|
|
(string= "emacs" (alist-get 'comm (process-attributes owner)))))
|
|
owner)))
|