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Detect whether the current project uses jj (Jujutsu) or git for version control. Run this BEFORE any VCS command to use the correct tool.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
| name | vcs-detect |
| description | Detect whether the current project uses jj (Jujutsu) or git for version control. Run this BEFORE any VCS command to use the correct tool. |
Detect the version control system in use before running any VCS commands.
git commands in a jj repo (or vice versa) causes errors.jj/ and .git/ exist)Both jj root and git rev-parse --show-toplevel walk up the filesystem to find repo root.
Priority order:
jj root succeeds → jj (handles colocated too)git rev-parse succeeds → gitif jj root &>/dev/null; then echo "jj"
elif git rev-parse --show-toplevel &>/dev/null; then echo "git"
else echo "none"
fi
| Operation | git | jj |
|---|---|---|
| Status | git status | jj status |
| Log | git log | jj log |
| Diff | git diff | jj diff |
| Commit | git commit | jj commit / jj describe |
| Branch list | git branch | jj branch list |
| New branch | git checkout -b <name> | jj branch create <name> |
| Push | git push | jj git push |
| Pull/Fetch | git pull / git fetch | jj git fetch |
| Rebase | git rebase | jj rebase |
Before any VCS operation:
none, warn user directory is not version controlledUser: Show me the git log
Agent: [Runs detection] -> Result: jj
Agent: [Runs `jj log` instead of `git log`]
When both .jj/ and .git/ exist, the repo is "colocated":
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