gh-pr

Create or update GitHub Pull Requests with the gh CLI, including deciding whether to create a new PR or only push based on existing PR merge status. Use when the user asks to open/create/edit a PR, generate a PR body/template, or says 'PRを出して/PR作成/gh pr'. Defaults: base=develop, head=current branch (same-branch only; never create/switch branches).

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Commande d'installation

npx skills add https://github.com/akiojin/xLLM --skill gh-pr

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akiojin/xLLM

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Mis à jour29 janvier 2026 à 06:57

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gh-fix-ci

akiojin/xLLM

Inspect GitHub PR for CI failures, merge conflicts, update-branch requirements, reviewer comments, change requests, and unresolved review threads. Create fix plans and implement after user approval. Resolve review threads and notify reviewers after fixes.

2026-01-290

Source

akiojin

akiojin/xLLM

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Développeurs de logicielsProfessions informatiques et mathématiques15-1252L4

name	gh-pr
description	Create or update GitHub Pull Requests with the gh CLI, including deciding whether to create a new PR or only push based on existing PR merge status. Use when the user asks to open/create/edit a PR, generate a PR body/template, or says 'PRを出して/PR作成/gh pr'. Defaults: base=develop, head=current branch (same-branch only; never create/switch branches).

GH PR

Overview

Create or update GitHub Pull Requests with the gh CLI using a detailed body template and strict same-branch rules.

Decision rules (must follow)

Do not create or switch branches. Always use the current branch as the PR head.
Check for an existing PR for the current head branch.
- gh pr list --head <head> --state all --json number,state,mergedAt,updatedAt,url,title,mergeCommit
If no PR exists → create a new PR.
If any PR exists and is NOT merged (mergedAt is null) → push only and finish (do not create a new PR).
- This applies to OPEN or CLOSED (unmerged) PRs.
- Only update title/body/labels if the user explicitly requests changes.
If all PRs for the head are merged → check for post-merge commits (see below).
If multiple PRs exist for the head → use the most recently updated PR for reporting, but the create vs push decision is based on mergedAt.

Post-merge commit check (critical)

When all PRs for the head branch are merged, you must check whether there are new commits after the merge:

Get the merge commit SHA of the most recent merged PR.
Count commits after the merge: git rev-list --count <merge_commit>..HEAD
Decision:
- If new commits exist → create a new PR (these changes are not in the base branch)
- If no new commits → report "No changes since last merge" and finish (do not create an empty PR)

Why this matters

Scenario A: PR merged → user makes local changes → pushes → changes are NOT in the merged PR
- Without this check, the changes would be lost or require manual intervention
Scenario B: PR merged → user says "create PR" without new changes → would create empty/duplicate PR
- This check prevents unnecessary PR creation

Workflow (recommended)

Confirm repo + branches
- Repo root: git rev-parse --show-toplevel
- Current branch (head): git rev-parse --abbrev-ref HEAD
- Base branch defaults to develop unless user specifies.
Fetch latest remote state
- git fetch origin to ensure accurate comparison
Check existing PR for head branch
- Use decision rules above to pick action.
- Treat mergedAt as the source of truth for "merged".
If all PRs are merged, perform post-merge commit check
- Get merge commit: gh pr list --head <head> --state merged --json mergeCommit -q '.[0].mergeCommit.oid'
- Count new commits: git rev-list --count <merge_commit>..HEAD
- If 0 → finish with message "No new changes since merge"
- If >0 → proceed to create new PR
Ensure the head branch is pushed
- If no upstream: git push -u origin <head>
- Otherwise: git push
Collect PR inputs (for new PR or explicit update)
- Title, Summary, Context, Changes, Testing, Risk/Impact, Deployment, Screenshots, Related Links, Notes
- Optional: labels, reviewers, assignees, draft
Build PR body from template
- Read references/pr-body-template.md and fill placeholders.
- If info is missing, keep TODO markers and explicitly mention them in the response.
Create or update the PR
- Create: gh pr create -B <base> -H <head> --title "<title>" --body-file <file>
- Update (only if user asked): gh pr edit <number> --title "<title>" --body-file <file>
Return PR URL
- gh pr view <number> --json url -q .url

Command snippets (bash)

head=$(git rev-parse --abbrev-ref HEAD)
base=develop

# Fetch latest remote state
git fetch origin

# Check existing PRs for the head branch
pr_json=$(gh pr list --head "$head" --state all --json number,state,mergedAt,mergeCommit)
pr_count=$(echo "$pr_json" | jq 'length')
unmerged_count=$(echo "$pr_json" | jq 'map(select(.mergedAt == null)) | length')

if [ "$pr_count" -eq 0 ]; then
  action=create
elif [ "$unmerged_count" -gt 0 ]; then
  action=push_only
else
  # All PRs are merged - check for post-merge commits
  merge_commit=$(echo "$pr_json" | jq -r 'sort_by(.mergedAt) | last | .mergeCommit.oid')
  
  if [ -n "$merge_commit" ] && [ "$merge_commit" != "null" ]; then
    new_commits=$(git rev-list --count "$merge_commit"..HEAD 2>/dev/null || echo "0")
    
    if [ "$new_commits" -gt 0 ]; then
      echo "Found $new_commits commit(s) after merge - creating new PR"
      action=create
    else
      echo "No new commits since merge - nothing to do"
      action=none
    fi
  else
    # Fallback: check against base branch
    new_commits=$(git rev-list --count "origin/$base"..HEAD 2>/dev/null || echo "0")
    
    if [ "$new_commits" -gt 0 ]; then
      action=create
    else
      action=none
    fi
  fi
fi

# Execute action
case "$action" in
  create)
    # Create PR body from template (edit as needed)
    cat > /tmp/pr-body.md <<'BODY'
## Summary
- TODO (one-sentence outcome)
- TODO (user-visible change, if any)

## Context
- TODO (why this PR is needed)
- TODO (background, ticket, or incident link)

## Changes
- TODO (key changes, bullets)
- TODO (notable refactors or cleanup)

## Testing
- TODO (commands run)
- TODO (manual steps, if any)

## Risk / Impact
- TODO (areas impacted)
- TODO (rollback plan / mitigation)

## Deployment
- TODO (steps, flags, or "none")

## Screenshots
- TODO (UI changes only)

## Related Issues / Links
- TODO (issues, specs, docs)

## Checklist
- [ ] Tests added/updated
- [ ] Lint/format checked
- [ ] Docs updated
- [ ] Migration/backfill plan included (if needed)
- [ ] Monitoring/alerts updated (if needed)

## Notes
- TODO (optional)
BODY

    git push -u origin "$head"
    gh pr create -B "$base" -H "$head" --title "..." --body-file /tmp/pr-body.md
    ;;
  push_only)
    echo "Existing unmerged PR found - pushing changes only"
    git push
    gh pr list --head "$head" --state open --json url -q '.[0].url'
    ;;
  none)
    echo "No action needed - no new changes since last merge"
    ;;
esac

References

references/pr-body-template.md: PR body template