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  1. EmacsWiki: Undo Tree
    Jul 5, 2016 ... About. Emacs's undo system allows you to recover any past state of a buffer. To
    do this, Emacs treats “undo” itself as just another editing action ...

    https://www.emacswiki.org/emacs/UndoTree
  2. EmacsWiki: Undo Commands
    Sep 11, 2015 ... Consecutive repetitions of 'C-/' (or its aliases) undo earlier and earlier changes in
    the current buffer. If all the recorded changes have already ...

    https://www.emacswiki.org/emacs/UndoCommands
  3. EmacsWiki: Category Undo
    May 15, 2013 ... In Emacs, undo means undoing changes to buffers. However, this page includes
    discussion of related ways to “undo” other aspects of your ...

    https://www.emacswiki.org/emacs/CategoryUndo
  4. EmacsWiki: Emacs Newbie Key Reference
    Aug 17, 2016 ... You've undone all changes when the mode line shows '--' instead of '**'; redo:
    after undo, C-g and then C-x u; undo unsaved changes to a ...

    https://www.emacswiki.org/emacs/EmacsNewbieKeyReference
  5. EmacsWiki: Revert Buffer
    Aug 31, 2016 ... Until Emacs 24.4, there is no way to save the undo history if the file is changed
    behind Emacs's back. Emacs needs to re-read the file from disk ...

    https://www.emacswiki.org/emacs/RevertBuffer
  6. EmacsWiki: point-undo.el
    May 4, 2010 ... M-x toggle-debug-on-error or (setq debug-on-error t) ;; 3) Use Lisp version
    instead of compiled one: (load "point-undo.el") ;; 4) Do it! ;; 5) If you ...

    https://www.emacswiki.org/emacs/point-undo.el
  7. EmacsWiki: old-fashioned-undo.el
    Nov 19, 2010 ... v3.0 10/12/2003 emacs21 support. ;; v2.7 10/07/2001 Fixed a bug that undo/redo
    elements is not counted properly ;; when saving information ...

    https://www.emacswiki.org/emacs/old-fashioned-undo.el
  8. EmacsWiki: Redo Mode
    Mar 13, 2011 ... Emacs treats 'undo' as just another command. Therefore you can undo the undo.
    This is powerful and confusing, because if you are doing ...

    https://www.emacswiki.org/emacs/RedoMode
  9. EmacsWiki: selective-undo-xmas.el
    Oct 13, 2005 ... Download ;;; selective-undo-xmas.el ;; This file is free software ;; Xemacs port of
    selective undo. (defun undo (&optional arg) "Undo some ...

    https://www.emacswiki.org/emacs/selective-undo-xmas.el
  10. EmacsWiki: Redo Plus
    Oct 12, 2013 ... redo.el provides a linear undo/redo system which is easy to understand for many
    people. However, redo.el is out-of-date and often destroys the ...

    https://www.emacswiki.org/emacs/RedoPlus


 

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