follow-the-vine-to-get-to-the-melon / vundo Goto Github PK
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Visualize the undo tree.
This project forked from casouri/vundo
Visualize the 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. Tests: You can run tests by loading test/vundo-test.el and M-x ert RET t RET to run those tests interactively, or use the following batch command: emacs --batch \ -l vundo.el \ -l test/vundo-test.el \ -f ert-run-tests-batch-and-exit Changelog (full changelog in NEWS.txt): <2022-04-04 Mon>: Version 1.0.0 <2022-03-29 Tue>: vundo--mode and vundo--mode-map are now vundo-mode and vundo-mode-map. A new custom option vundo-compact-display is added. <2022-03-23 Wed>: UI now defaults to ASCII mode. ASCII mode also draws differently now, it now draws o--o--o instead of o--o--o | `--x | +--* |--o |--o `--o +--o <2021-11-26 Fri>: Variable vundo-translate-alist changed to vundo-glyph-alist and has different value now.
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