From: martin rudalics <rudalics@gmx.at>
To: "Lennart Borgman (gmail)" <lennart.borgman@gmail.com>
Cc: 810@emacsbugs.donarmstrong.com
Subject: bug#810: 23.0.60; atomic-change-group narrowing problem
Date: Fri, 29 Aug 2008 11:27:04 +0200 [thread overview]
Message-ID: <48B7C0E8.6070203@gmx.at> (raw)
In-Reply-To: <48B71A96.4040700@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 235 bytes --]
> I would suggest that this is a bug in the function. Think for example of
> the case that you want to test something during narrowing and be sure
> that the buffer is not changed.
Does the attached patch do what you want?
martin
[-- Attachment #2: 810.diff --]
[-- Type: text/plain, Size: 2200 bytes --]
*** subr.el.~1.602.~ 2008-07-31 07:33:45.000000000 +0200
--- subr.el 2008-08-29 11:15:34.765625000 +0200
***************
*** 1991,2016 ****
(dolist (elt handle)
(with-current-buffer (car elt)
(setq elt (cdr elt))
! (let ((old-car
! (if (consp elt) (car elt)))
! (old-cdr
! (if (consp elt) (cdr elt))))
! ;; Temporarily truncate the undo log at ELT.
! (when (consp elt)
! (setcar elt nil) (setcdr elt nil))
! (unless (eq last-command 'undo) (undo-start))
! ;; Make sure there's no confusion.
! (when (and (consp elt) (not (eq elt (last pending-undo-list))))
! (error "Undoing to some unrelated state"))
! ;; Undo it all.
! (save-excursion
! (while (listp pending-undo-list) (undo-more 1)))
! ;; Reset the modified cons cell ELT to its original content.
! (when (consp elt)
! (setcar elt old-car)
! (setcdr elt old-cdr))
! ;; Revert the undo info to what it was when we grabbed the state.
! (setq buffer-undo-list elt)))))
\f
;;;; Display-related functions.
--- 1991,2018 ----
(dolist (elt handle)
(with-current-buffer (car elt)
(setq elt (cdr elt))
! (save-restriction
! (widen)
! (let ((old-car
! (if (consp elt) (car elt)))
! (old-cdr
! (if (consp elt) (cdr elt))))
! ;; Temporarily truncate the undo log at ELT.
! (when (consp elt)
! (setcar elt nil) (setcdr elt nil))
! (unless (eq last-command 'undo) (undo-start))
! ;; Make sure there's no confusion.
! (when (and (consp elt) (not (eq elt (last pending-undo-list))))
! (error "Undoing to some unrelated state"))
! ;; Undo it all.
! (save-excursion
! (while (listp pending-undo-list) (undo-more 1)))
! ;; Reset the modified cons cell ELT to its original content.
! (when (consp elt)
! (setcar elt old-car)
! (setcdr elt old-cdr))
! ;; Revert the undo info to what it was when we grabbed the state.
! (setq buffer-undo-list elt))))))
\f
;;;; Display-related functions.
next prev parent reply other threads:[~2008-08-29 9:27 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <48C3A6BE.8030305@gmx.at>
2008-08-28 18:58 ` bug#810: 23.0.60; atomic-change-group narrowing problem Lennart Borgman (gmail)
2008-08-28 21:26 ` martin rudalics
2008-08-28 21:37 ` Lennart Borgman (gmail)
2008-08-29 9:27 ` martin rudalics [this message]
2008-09-01 17:56 ` martin rudalics
2008-09-01 20:43 ` Stefan Monnier
2008-09-01 21:20 ` martin rudalics
2008-09-01 21:53 ` Lennart Borgman (gmail)
2008-09-02 2:38 ` Stefan Monnier
2008-09-07 9:37 ` martin rudalics
2008-09-02 14:13 ` Richard M. Stallman
2008-09-07 10:15 ` bug#810: marked as done (23.0.60; atomic-change-group narrowing problem) Emacs bug Tracking System
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