# mbbill/undotree

The undo history visualizer for VIM

Repository: https://github.com/mbbill/undotree
Canonical: https://ross.abutalabs.com/products/undotree
Homepage: http://www.vim.org/scripts/script.php?script_id=4177
Language: Vim Script
License: BSD-3-Clause
License Family: permissive
Last push: 2026-03-08T05:23:25+00:00

## Health v2 (maintenance only)
Score: 55/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 71, release rhythm 8, longevity 100
- inputs: {"age_days": 5128, "days_push": 178, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4540, forks 119 (observed 2026-08-28T04:08:53.116885+00:00)

## What it is
A Vim plugin that visualizes Vim's undo history as a tree graph in a side panel, letting users browse and switch between undo branches. It is written purely in Vim script with no external dependencies and never writes to disk.

## Use cases
- visualize vim undo history as a tree
- switch between undo branches in vim
- recover edits that were overwritten by later changes
- browse persistent undo history across sessions
- toggle an undo tree panel with a hotkey

## When to choose
- you use Vim or Neovim and want a graphical view of undo branches
- you frequently undo past branch points and need to navigate divergent edit history
- you want a dependency-free Vim script plugin

## When to avoid
- you use an editor other than Vim/Neovim
- you only need simple linear undo/redo
- you prefer built-in :undo commands without a visual panel

## Facets
- artifact type: plugin
- maturity: stable
- function: editor, developer-tools
- domain: text-editors, developer-tools
- platform: editor-plugin, cross-platform
- tags: vim-plugin, undo-history, undo-tree, vim-script, vim

## Member repositories
- mbbill/undotree (main) score 55

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:53.116885+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:20:09.816374+00:00, confidence not recorded.
  - readme: https://github.com/mbbill/undotree (fetched 2026-08-28T04:08:53.116885+00:00, sha 93fa9047f7b4)
  - homepage: http://www.vim.org/scripts/script.php?script_id=4177 (fetched 2026-08-29T09:05:52.269811+00:00, sha b4d63c67f7b9)
  - site_page: https://www.vim.org/about.php (fetched 2026-08-29T09:05:52.278980+00:00, sha 1bd2c1907ce5)
  - site_page: https://www.vim.org/docs.php (fetched 2026-08-29T09:05:52.280785+00:00, sha 438015e9e2e2)
  - site_page: http://www.vim.org/about.php (fetched 2026-08-29T09:05:52.282603+00:00, sha fbe78bde9535)
- Data as of 2026-08-30T08:39:29.467469+00:00.