[feature request] add flag to exclude iedit changes from undo buffer

[TLINDEN]

As far as I understand the docs and source, there's no such feature yet, I wrote the following work-around:

;; Keep buffer-undo-list as is while iedit is active, that is, as long
;; as I am  inside iedit I can undo/redo  current occurences. However,
;; if I leave iedit and issue  the undo command, ALL changes made with
;; iedit  are undone,  whereas the  default behaviour  would be  to go
;; through every change made iside iedit, which I hate.

;; iedit doesn't  provide a customizable  flag to configure  it's undo
;; behavior, so, I modify it myself using defadvice.

(setq my-buffer-undo-list nil)
(advice-add 'iedit-mode :before '(lambda (&rest args) ;; save current
                                   (setq my-buffer-undo-list buffer-undo-list)))

(advice-add 'iedit-mode :after '(lambda (&rest args)  ;; restore previously saved
                                  (setq buffer-undo-list my-buffer-undo-list)))

Maybe this is of use for others, therefore I'm posting it here.

Thanks for iedit anyway, I LOVE LOVE LOVE it 👍