jj
Jujutsu (jj) Version Control System
Overview
Jujutsu is a powerful Git-compatible version control system that combines ideas from Git, Mercurial, Darcs, and adds novel features. It uses Git repositories as a storage backend, making it fully interoperable with existing Git tooling.
Key differentiators from Git:
- Working copy is automatically committed (no staging area)
- Conflicts can be committed and resolved later
- Automatic rebasing of descendants when commits change
- Operation log enables easy undo of any operation
- Revsets provide powerful commit selection
- Change IDs stay stable across rewrites (unlike commit hashes)
When to Use This Skill
- User mentions "jj", "jujutsu", or "jujutsu vcs"
- Working with stacked/dependent commits
- Questions about change IDs vs commit IDs
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