pr-prompt 2.0.0

A tool to generate pull request prompts using git cli commands.

pr-prompt

Generate pull request prompts (review, description, or custom) from git diffs, commits, and context files.

🚀 Features

🤖 Pull Request Prompt

• Prompt Instructions: Generate review or description prompts, or supply custom instructions.
• Diff: Display differences between the current and base branches.
• Context Patterns: Include matched files in the prompt for additional context.
• Blacklist Patterns: Exclude noisy files (e.g., *.lock).
• Overview: Get PR metadata, context files, and changed file tree without diffs.
• File Diff: Get diffs for specific files using glob patterns.

🛠️ Usage & Integration

• Python API: Usable as a library in your own tools.
• CLI Interface: Simple command-line for quick use.
• TOML Configuration: Configure via pyproject.toml.
• Vendor Agnostic: Works with any LLM.

📥 Installation

pip install pr-prompt

📚 Requirements

• Python 3.9+
• git installed and on PATH (or set GIT_PYTHON_GIT_EXECUTABLE)

⚡ Quick Start

🐍 Python API (PrPromptGenerator)

from pr_prompt import PrPromptGenerator

generator = PrPromptGenerator.from_toml()  # uses defaults + any TOML config
prompt = generator.generate_review()       # compares current HEAD to default base branch
print(prompt)

🖥️ CLI Usage

# Full review prompt (default type) to stdout
pr-prompt generate

# Full description prompt to stdout
pr-prompt generate description

# Custom prompt (requires custom_instructions in TOML config)
pr-prompt generate custom

# Copy review prompt to clipboard
pr-prompt generate review | xclip -selection clipboard

# PR overview: metadata + context files + changed file tree (no diffs)
pr-prompt overview

# File diffs for specific glob patterns
pr-prompt diff 'src/*.py'
pr-prompt diff '*.py' '*.md' --context-lines 3

🔗 Shell Aliases

Add to your shell config (e.g., ~/.bashrc or ~/.zshrc):

alias review='uvx pr-prompt generate review | xclip -selection clipboard'
alias desc='uvx pr-prompt generate description | xclip -selection clipboard'

⚙️ Configuration

🔧 Parameters Reference

PrPromptGenerator / CLI / TOML shared parameters:

• blacklist_patterns (list[str]) File patterns to exclude from diffs and context file inclusion. Default: ["*.lock", "package-lock.json"]. Note: binary files are automatically detected and excluded.
• context_patterns (list[str] | None) File patterns to include in prompt (after blacklist filtering). Default: None
• fetch_base (bool) Fetch base ref before generating diff. Default: False
• diff_context_lines (int) Number of context lines around changes in diffs. Default: 999999
• include_commit_messages (bool) Include commit messages in prompt. Default: True
• repo_path (str | None) Target repo path. Default: cwd
• remote (str) Git remote name. Default: origin
• default_base_branch (str | None) Used when base_ref not passed. Inferred if omitted.
• custom_instructions (str | None) Used when instructions are not provided in generate_custom.

📜 Parameter Precedence Order

Highest wins (later overrides earlier):

1. Internal defaults (dataclass field defaults)
2. pyproject.toml / pr_prompt.toml [tool.pr-prompt] values
3. Explicit constructor args / CLI flags (mapped to generator args)
4. Per-call method arguments (e.g., base_ref passed to generate_review)

Notes:

• If you call generate_review(base_ref=...), that overrides both default_base_branch and any TOML value.
• For custom prompts: if instructions arg omitted, custom_instructions (TOML or constructor) must be set or an error is raised.

🎯 Prompt Types

🔍 Review

Guides the LLM to write a code review (quality, correctness, security, performance, clarity).

📝 Description

Guides the LLM to write a clear PR description (summary, rationale, impact).

🛠️ Custom

Arbitrary instructions. Requires:

• Pass instructions=... in generate_custom, OR
• Set custom_instructions in constructor/TOML (used when CLI type=custom)

📄 Prompt Example

## Instructions
You are a senior software engineer...

## Pull Request Details
Repository: pr-prompt
Branch: `feature` -> `origin/main`
Commits: Bumped minor

## Context Files
File: `README.md`...

## Changed Files
M src/pr_prompt/__init__.py

## File diffs
Modified `src/pr_prompt/__init__.py`
~~~diff
-__version__ = "0.3.0"
+__version__ = "0.4.0"
~~~

⚙️ Using pyproject.toml / pr_prompt.toml

🔧 Default Configuration

[tool.pr-prompt]
blacklist_patterns = ["*.lock", "package-lock.json"]
# context_patterns =
fetch_base = false
diff_context_lines = 999999
include_commit_messages = true
# repo_path =
remote = "origin"
# default_base_branch =
# custom_instructions =

🤝 Contributing

Contributions welcome. Please open issues / PRs.

📜 License

MIT License (see LICENSE).