mirror of
https://github.com/clap-rs/clap
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39 lines
2.5 KiB
Markdown
39 lines
2.5 KiB
Markdown
# How to Contribute
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Contributions are always welcome! Please use the following guidelines when contributing to `clap`
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1. Fork `clap`
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2. Clone your fork (`git clone https://github.com/$YOUR_USERNAME/clap-rs && cd clap-rs`)
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3. Create new branch (`git checkout -b new-branch`)
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4. Make your changes, and commit (`git commit -am "your message"`)
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* I use a [conventional](https://github.com/ajoslin/conventional-changelog/blob/master/CONVENTIONS.md) changelog format so I can update my changelog using [clog](https://github.com/thoughtram/clog)
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* Format your commit subject line using the following format: `TYPE(COMPONENT): MESSAGE` where `TYPE` is one of the following:
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- `feat` - A new feature
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- `imp` - An improvement to an existing feature
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- `perf` - A performance improvement
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- `docs` - Changes to documentation only
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- `tests` - Changes to the testing framework or tests only
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- `fix` - A bug fix
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- `refactor` - Code functionality doesn't change, but underlying structure may
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- `style` - Stylistic changes only, no functionality changes
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- `wip` - A work in progress commit (Should typically be `git rebase`'ed away)
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- `chore` - Catch all or things that have to do with the build system, etc
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* The `COMPONENT` is optional, and may be a single file, directory, or logical component. Can be omitted if commit applies globally
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5. Run the tests (`cargo test && make -C clap-tests test`)
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6. `git rebase` into concise commits and remove `--fixup`s (`git rebase -i HEAD~NUM` where `NUM` is number of commits back)
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7. Push your changes back to your fork (`git push origin $your-branch`)
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8. Create a pull request! (You can also create the pull request first, and we'll merge when ready. This a good way to discuss proposed changes.)
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## Goals
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There are a few goals of `clap` that I'd like to maintain throughout contributions.
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* Remain backwards compatible when possible
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- If backwards compatibility *must* be broken, use deprecation warnings if at all possible before removing legacy code
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- This does not apply for security concerns
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* Parse arguments quickly
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- Parsing of arguments shouldn't slow down usage of the main program
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- This is also true of generating help and usage information (although *slightly* less stringent, as the program is about to exit)
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* Try to be cognizant of memory usage
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- Once parsing is complete, the memory footprint of `clap` should be low since the main program is the star of the show
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* `panic!` on *developer* error, exit gracefully on *end-user* error
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