pr

name	pr
description	Generates comprehensive PR descriptions and creates pull requests with proper context from git history. Invoke with /pr.

You generate comprehensive PR descriptions and create pull requests using repository templates and context from git history.

Execution Flow

Step 1: Gather Context

git branch --show-current
git log main..HEAD --oneline
git diff main --stat

If the branch targets a non-default base (e.g. a parent feature branch), diff against that base instead.

Step 2: Resolve PR Template

1. Look for a PR template in the repository (common locations: .github/pull_request_template.md, .github/PULL_REQUEST_TEMPLATE.md, docs/pull_request_template.md)
2. If a template exists: Read the entire file, extract exact section headings (including emoji if present), and use them verbatim in the PR body — do NOT use the fallback
3. If no template exists: Use the fallback template described in Step 5

Step 3: Analyse Changes

Read the full diff (production code, not tests) to understand what behaviour changed. Identify:

• New or changed rules, conditions, or decision logic
• Changed values or constants — note old vs new
• Removed or replaced behaviour
• Structural refactors that affect how the system behaves

Do NOT catalogue files, classes, or methods. The goal is to understand the impact so a reviewer can answer: "what does this change mean?"

Step 4: Generate PR Title

Format: {type}: {concise description} — types: feat, fix, refactor, docs, chore.

Step 5: Generate PR Body

Use the template from Step 2. Populate each section from available sources (SUMMARY.md, git log, diff).

Writing Style

• Present tense throughout — write "adds", "changes", "removes", not past ("added") or future ("will add"). The PR description describes what the code does now.
• Describe the final state, not the journey — the description represents HEAD, not the sequence of commits that got there. Don't mention intermediate refactors, reverts, or iterations. A reader should understand what the branch does, not how it was developed.
• Describe behaviour, not code — a reviewer needs to understand what logic changed, not which files were touched. Write about what the system does differently. Never list changed files, test files, or commit-by-commit narratives.
• Use tables for before/after comparisons — when values change (constants, limits, configuration), present them in a table with old and new columns. Tables are scannable and make the scope of change immediately clear.
• Group by logical concept, not by file — use subheadings that describe the change in domain terms, not implementation terms. Each group should describe one coherent behavioural change.
• Call out new behaviour explicitly — if something didn't exist before, mark it clearly (e.g. "—" in the old column of a table, or "new" in prose).
• Minor refactors get a light touch — if a refactor doesn't change behaviour (e.g. extracting a method, renaming for clarity, using an enum instead of a string), a single bullet under a "Minor refactors" subheading is sufficient. Don't over-explain mechanical changes.

Template Adherence

• All template sections must be present — never remove a section from the template, even if it doesn't apply.
• Inapplicable sections get N/A — write exactly N/A with no qualifier, explanation, or elaboration (not "N/A — backend only", not "No screenshots needed", just N/A).

Fallback (no repo template only): Include sections for Description (what and why), Related Links, Changes (categorised), Screenshots, and Notes (deviations, decisions, limitations).

Step 6: Verify Template Compliance

Whether using a repo template or the fallback: confirm all section headings are present (with exact emoji and wording if from a repo template). Confirm inapplicable sections contain only N/A. Confirm no bulleted file lists, test file enumerations, or commit-by-commit narratives.

Step 7: Push and Create PR

Optional arguments: --base {branch} (default: master), --draft (create as draft), --no-push (generate description only), --update {number} (update an existing PR's description only).

When updating an existing PR (--update), skip push and creation — only update the body with gh pr edit.

git push -u origin $(git branch --show-current)
gh pr create --title "{title}" --body "$(cat <<'EOF'
{body}
EOF
)"

Step 8: Report Success

Output: PR number, title, URL, files changed count, commit count.