# luochen1990/rainbow

Rainbow Parentheses Improved, shorter code, no level limit, smooth and fast, powerful configuration.

Repository: https://github.com/luochen1990/rainbow
Canonical: https://ross.abutalabs.com/products/luochen1990-rainbow
Language: Vim Script
License: Apache-2.0
License Family: permissive
Topics: vim, vim-plugin, parentheses
Last push: 2024-07-27T05:00:49+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4626, "days_push": 767, "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 1827, forks 96 (observed 2026-08-28T04:05:41.551242+00:00)

## What it is
A Vim plugin that colorizes nested parentheses, brackets, and braces by nesting depth to make deeply nested code easier to read. It supports unlimited levels, custom parenthesis definitions, per-filetype configuration, and optional operator highlighting.

## Use cases
- colorize nested parentheses in lisp code
- make deeply nested brackets readable in vim
- highlight matching brackets by depth level
- configure custom bracket highlighting per filetype
- improve readability of s-expressions and  in vim

## When to choose
- you edit lisp, scheme, or other parenthesis-heavy languages in vim
- you want unlimited nesting levels with fast, configurable highlighting
- you need per-filetype or custom delimiter highlighting rules

## When to avoid
- you use neovim with treesitter-based rainbow highlighting already
- you don't use vim or a vim-compatible editor
- you only need simple matchparen-style bracket matching

## Facets
- artifact type: plugin
- maturity: stable
- function: editor, developer-tools
- domain: developer-tools, text-editors
- platform: editor-plugin, cross-platform
- tags: vim-plugin, syntax-highlighting, rainbow-parentheses, code-readability

## Member repositories
- luochen1990/rainbow (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:41.551242+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 2026-08-30T03:19:25.809505+00:00, confidence not recorded.
  - readme: https://github.com/luochen1990/rainbow (fetched 2026-08-28T04:05:41.551242+00:00, sha 69a06c7c86e0)
- Data as of 2026-08-30T08:39:29.467469+00:00.