{
  "slug": "jj-rebase-adds-simplify-parents-8cadc905de73",
  "title": "jj rebase adds --simplify-parents",
  "tools": [
    "jj"
  ],
  "tags": [
    "agent"
  ],
  "introduced_at": "2026-03-04T18:28:43.000Z",
  "announced_at": "2026-03-04T18:28:43.000Z",
  "effective_at": null,
  "date_basis": "source-publication",
  "status": "unknown",
  "how": {
    "incantation": "When rebasing commits and you want to remove parent edges that are ancestors of other parents, run `jj rebase --simplify-parents --onto <destination>`; with no source selector, jj rebases the default branch `@`.",
    "examples": [
      "jj rebase --simplify-parents --onto <destination>"
    ],
    "gotchas": [
      "Version: v0.39.0",
      "--simplify-parents: Simplify parents of rebased commits by removing parents that are ancestors of other parents.",
      "--onto <REVSETS> (required): Revision(s) to rebase onto; may be repeated to create a merge commit. A rebase destination is required.",
      "--branch, --source, or --revisions: Selects what to rebase. If none is supplied, the default is `--branch @`.",
      "Prerequisite: Use jj v0.39.0 or later for this flag."
    ]
  },
  "why_it_matters": "Rebase commits while applying parent simplification to the rebased commits.",
  "before": "Rebase first, then run `jj simplify-parents` on the freshly rebased commits.",
  "sources": [
    "https://github.com/jj-vcs/jj/releases/tag/v0.39.0",
    "https://github.com/jj-vcs/jj/blob/v0.39.0/cli/src/commands/rebase.rs"
  ],
  "rank": 0.92023,
  "judge": {
    "publish": true,
    "judge_model": "codex-cli/gpt-6-luna+typesafe/jev-1.13.0",
    "prompt_version": "extract-v7+enrich-v2+judge-v2x3+jev-publish-v1"
  },
  "review_state": "approved",
  "provenance": {
    "run_id": "wave1b-tools-20261017",
    "verdict_id": "wave1b-tools-20261017:wave1b-tools-20261017-7bbe2f4242294e1b-15:gate",
    "evidence_hash": "c53a418ad28d07436e7dcc93a9a84d24352b31af3ecd8b942def60733aee66fc"
  },
  "review": {
    "draft_hash": "6d413179b5d44afacc83444274ba8775b5fffe5e7045aeae039a039a629a403b",
    "reviewer": "publication-gate",
    "reviewed_at": "2026-10-07T00:00:00.000Z",
    "decision": "wave1b-tools-20261017:gate",
    "reason": "2 of 3 judge runs approved with p_yes >= 0.9 (mean 0.92 >= 0.9; 2 needed) and Jev gave 0.76 (>= 0.6 needed)."
  }
}