externally visited files

ibuffer revert list

;; -----------------------------------------
;; List of visited files - for reversion (V)
;; eg when external process visits files.
;; -----------------------------------------
(require 'ibuffer)
(require 'ibuf-ext)
(define-ibuffer-filter my-revisited-buffers
    "Filter buffers that have been revisited"
  (:description "revisited buffers"
   :reader (ido-read-directory-name "dname"))
  (with-current-buffer buf
    (not (verify-visited-file-modtime buf))))

;; ----------------------------------------
;; use ibuffer to list revisited buffers
;; (eg git checkouts)
;; ----------------------------------------
(defun my-revert-files ()
  "Revert files which have been visited externally."
  (interactive)
  (ibuffer nil "*Buffers Visited Externally*"
           (list (cons 'my-revisited-buffers ""))))

(global-set-key (kbd "C-c e z") 'my-revert-files)