Homepage: https://github.com/casouri/vundo
Author: Yuan Fu
Updated:
Visual undo tree
Vundo (visual undo) displays the undo history as a tree and lets you
move in the tree to go back to previous buffer states. To use vundo,
type M-x vundo RET in the buffer you want to undo. An undo tree buffer
should pop up. To move around, type:
f to go forward
b to go backward
n to go to the node below when you at a branching point
p to go to the node above
a to go back to the last branching point
e to go forward to the end/tip of the branch
q to quit, you can also type C-g
n/p may need some more explanation. In the following tree, n/p can
move between A and B because they share a parent (thus at a branching
point), but not C and D.
A C
──○──○──○──○──○
│ ↕
└──○──○──○
B D
By default, you need to press RET to “commit” your change and if you
quit with q or C-g, the changes made by vundo are rolled back. You can
set `vundo-roll-back-on-quit' to nil to disable rolling back.
Note: vundo.el requires Emacs 28.
Customizable faces:
- vundo-default
- vundo-node
- vundo-stem
- vundo-highlight
If you want to use prettier Unicode characters to draw the tree like
this:
○──○──○
│ └──●
├──○
└──○
set vundo-glyph-alist by
(setq vundo-glyph-alist vundo-unicode-symbols)
Your default font needs to contain these Unicode characters, otherwise
they look terrible and don’t align. You can find a font that covers
these characters (eg, Symbola, Unifont), and set `vundo-default' face
to use that font:
(set-face-attribute 'vundo-default nil :family "Symbola")
Comparing to undo-tree:
Vundo doesn’t need to be turned on all the time nor replace the undo
commands like undo-tree does. Vundo displays the tree horizontally,
whereas undo-tree displays a tree vertically. Vundo doesn’t have many
advanced features that undo-tree does (like showing diff), and most
probably will not add those features in the future.