2020-04-14 06:44:16 +08:00
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#+TITLE: emacs/undo
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#+DATE: April 13, 2020
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#+SINCE: v3.0.0
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#+STARTUP: inlineimages nofold
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* Table of Contents :TOC_3:noexport:
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- [[#description][Description]]
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- [[#maintainers][Maintainers]]
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- [[#module-flags][Module Flags]]
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- [[#plugins][Plugins]]
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- [[#hacks][Hacks]]
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- [[#prerequisites][Prerequisites]]
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- [[#features][Features]]
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- [[#configuration][Configuration]]
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2020-05-10 03:39:37 +08:00
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- [[#disabling-persistent-undo-history][Disabling persistent undo history]]
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2020-04-14 06:44:16 +08:00
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- [[#troubleshooting][Troubleshooting]]
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* Description
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2020-05-10 03:39:37 +08:00
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This module augments Emacs' built-in undo system to be more intuitive and to
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persist across Emacs sessions.
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2020-04-14 06:44:16 +08:00
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** Maintainers
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This module has no dedicated maintainers.
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** Module Flags
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+ =+tree= Uses ~undo-tree~ instead of ~undo-fu~, which is a little less stable,
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but offers branching undo history and a visualizer for navigating it.
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** Plugins
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+ [[https://gitlab.com/ideasman42/emacs-undo-fu][undo-fu]]
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+ [[https://gitlab.com/ideasman42/emacs-undo-fu-session][undo-fu-session]]
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+ [[https://github.com/emacsmirror/undo-tree][undo-tree]] (=+tree=)
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** Hacks
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+ Both undo-fu and undo-tree have been modified to use zstd to compress undo
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history if it is available.
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+ undo-tree only
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+ Text properties are stripped from undo history to shrink it.
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+ Undo-tree is too chatty about saving its history files. This has be
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"silenced". i.e. It's visible in \*Messages\*, but won't appear in your
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minibuffer.
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+ unfo-fu only
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+ Doom defines =undo-fu-mode= to make it easier to add hooks/mode-local
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keybinds.
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* Prerequisites
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This module has no prereqisites.
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* TODO Features
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# An in-depth list of features, how to use them, and their dependencies.
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2020-05-10 03:39:37 +08:00
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* Configuration
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** Disabling persistent undo history
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+ If you are using =+tree=:
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#+BEGIN_SRC elisp
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(after! undo-tree
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(setq undo-tree-auto-save-history nil))
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#+END_SRC
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+ If you aren't:
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#+BEGIN_SRC elisp
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(remove-hook 'undo-fu-mode-hook #'global-undo-fu-session-mode)
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#+END_SRC
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2020-04-14 06:44:16 +08:00
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* TODO Troubleshooting
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# Common issues and their solution, or places to look for help.
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