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73 lines
3.2 KiB
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73 lines
3.2 KiB
Markdown
# Contributing
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Contributors are very welcome! **No contribution is too small and all contributions are valued.**
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Some suggestions to get started:
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- You can look at the [good first issue][good-first-issue] label on the issue tracker.
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- Help with packaging on various distributions needed!
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- To use print debugging to the [Helix log file][log-file], you must:
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* Print using `log::info!`, `warn!`, or `error!`. (`log::info!("helix!")`)
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* Pass the appropriate verbosity level option for the desired log level. (`hx -v <file>` for info, more `v`s for higher verbosity)
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* Want to display the logs in a separate file instead of using the `:log-open` command in your compiled Helix editor? Start your debug version with `cargo run -- --log foo.log` and in a new terminal use `tail -f foo.log`
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- Instead of running a release version of Helix, while developing you may want to run in debug mode with `cargo run` which is way faster to compile
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- Looking for even faster compile times? Give a try to [mold](https://github.com/rui314/mold)
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- If your preferred language is missing, integrating a tree-sitter grammar for
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it and defining syntax highlight queries for it is straight forward and
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doesn't require much knowledge of the internals.
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We provide an [architecture.md][architecture.md] that should give you
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a good overview of the internals.
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# Auto generated documentation
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Some parts of [the book][docs] are autogenerated from the code itself,
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like the list of `:commands` and supported languages. To generate these
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files, run
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```shell
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cargo xtask docgen
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```
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inside the project. We use [xtask][xtask] as an ad-hoc task runner.
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To preview the book itself, install [mdbook][mdbook]. Then, run
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```shell
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mdbook serve book
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```
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and visit [http://localhost:3000](http://localhost:3000).
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# Testing
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## Unit tests/Documentation tests
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Run `cargo test --workspace` to run unit tests and documentation tests in all packages.
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## Integration tests
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Integration tests for helix-term can be run with `cargo integration-test`. Code
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contributors are strongly encouraged to write integration tests for their code.
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Existing tests can be used as examples. Helpers can be found in
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[helpers.rs][helpers.rs]. The log level can be set with the `HELIX_LOG_LEVEL`
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environment variable, e.g. `HELIX_LOG_LEVEL=debug cargo integration-test`.
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Contributors using MacOS might encounter `Too many open files (os error 24)`
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failures while running integration tests. This can be resolved by increasing
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the default value (e.g. to `10240` from `256`) by running `ulimit -n 10240`.
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## Minimum Stable Rust Version (MSRV) Policy
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Helix follows the MSRV of Firefox.
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The current MSRV and future changes to the MSRV are listed in the [Firefox documentation].
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[Firefox documentation]: https://firefox-source-docs.mozilla.org/writing-rust-code/update-policy.html
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[good-first-issue]: https://github.com/helix-editor/helix/labels/E-easy
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[log-file]: https://github.com/helix-editor/helix/wiki/FAQ#access-the-log-file
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[architecture.md]: ./architecture.md
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[docs]: https://docs.helix-editor.com/
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[xtask]: https://github.com/matklad/cargo-xtask
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[mdbook]: https://rust-lang.github.io/mdBook/guide/installation.html
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[helpers.rs]: ../helix-term/tests/test/helpers.rs
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