+ (progn
+ (start-process "*display*"
+ (setq buffer
+ (generate-new-buffer " *mm*"))
+ shell-file-name
+ shell-command-switch command)
+ (set-process-sentinel
+ (get-buffer-process buffer)
+ (lexical-let ;; Don't use `let'.
+ ;; Function used to remove temp file and directory.
+ ((fn `(lambda nil
+ ;; Don't use `ignore-errors'.
+ (condition-case nil
+ (delete-file ,file)
+ (error))
+ (condition-case nil
+ (delete-directory
+ ,(file-name-directory file))
+ (error))))
+ ;; Form uses to kill the process buffer and
+ ;; remove the undisplayer.
+ (fm `(progn
+ (kill-buffer ,buffer)
+ ,(macroexpand
+ (list 'mm-handle-set-undisplayer
+ (list 'quote handle)
+ nil))))
+ ;; Message to be issued when the process exits.
+ (done (format "Displaying %s...done" command))
+ ;; In particular, the timer object (which is
+ ;; a vector in Emacs but is a list in XEmacs)
+ ;; requires that it is lexically scoped.
+ (timer (run-at-time 2.0 nil 'ignore)))
+ (lambda (process state)
+ (when (eq 'exit (process-status process))
+ (if (memq timer timer-list)
+ (timer-set-function timer fn)
+ (funcall fn))
+ (ignore-errors (eval fm))
+ (message "%s" done))))))