# bbatsov/crux

A Collection of Ridiculously Useful eXtensions for Emacs

Repository: https://github.com/bbatsov/crux
Canonical: https://ross.abutalabs.com/products/bbatsov-crux
Homepage: https://emacsredux.com
Language: Emacs Lisp
License Family: other
Topics: emacs, emacs-lisp
Last push: 2026-03-15T06:22:05+00:00

## Health v2 (maintenance only)
Score: 55/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 72, release rhythm 8, longevity 100
- inputs: {"age_days": 3905, "days_push": 171, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1044, forks 53 (observed 2026-08-28T04:03:21.162572+00:00)

## What it is
crux is a collection of useful interactive commands and extensions for Emacs, extracted from the Emacs Prelude distribution. It enhances the editing experience with smart line operations, file-opening utilities, and other convenience commands.

## Use cases
- improve my emacs editing experience with useful commands
- kill whole lines smartly in emacs
- open files with external programs from emacs
- insert indented blank lines above or below the current line
- reopen a file as root in emacs
- find handy emacs extensions to add to my config

## When to choose
- you use Emacs and want a curated set of quality-of-life editing commands
- you want utility commands without a heavy preconfigured distribution like Prelude
- you prefer binding only the commands you need to your own keybindings

## When to avoid
- you don't use Emacs
- you want an out-of-the-box configured editor rather than individual commands
- you need a full IDE-like Emacs distribution with defaults and keybindings set up

## Facets
- artifact type: library
- maturity: active
- function: developer-tools, plugin-system
- domain: text-editors, developer-tools
- platform: cross-platform
- tags: emacs-lisp, editor-extensions, melpa, editing-commands, emacs

## Member repositories
- bbatsov/crux (main) score 55

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:21.162572+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 2026-08-30T07:02:12.188535+00:00, confidence not recorded.
  - readme: https://github.com/bbatsov/crux (fetched 2026-08-28T04:03:21.162572+00:00, sha a8c4513b8d3d)
  - homepage: https://emacsredux.com (fetched 2026-08-29T13:03:10.924165+00:00, sha f52252151bd1)
  - site_page: https://emacsredux.com/about (fetched 2026-08-29T13:03:10.933479+00:00, sha 611b9099beda)
  - site_page: https://emacsredux.com/faq (fetched 2026-08-29T13:03:10.935821+00:00, sha 172d0682e5d3)
- Data as of 2026-08-30T08:39:29.467469+00:00.