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118 lines
3.8 KiB
Markdown
118 lines
3.8 KiB
Markdown
# Contributing to wezterm
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Thanks for considering donating your time and energy! I value any contribution,
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even if it is just to highlight a typo.
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Included here are some guidelines that can help streamline taking in your contribution.
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They are just guidelines and not hard-and-fast rules. Things will probably go faster
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and smoother if you have the time and energy to read and follow these suggestions.
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## Contributing Documentation
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There's never enough! Pretty much anything is fair game to improve here.
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### Operating system specific installation instructions?
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There are a lot of targets out there. Today we have docs that are Ubuntu biased
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and I know that there are a lot flavors of Linux. Rather than expand the README
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with intructions for those, please translate the instructions into steps that
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can be run in the [`get-deps`](https://github.com/wez/wezterm/blob/master/get-deps)
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script.
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## Contributing code
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Yes please!
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If you are new to the Rust language check out https://rustbyexample.com/
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### Where to find things?
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The `term` directory holds the core terminal model code. This is agnostic
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of any windowing system. If you want to add support for terminal escape
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sequences and that sort of thing, you probably want to be in the `term` dir.
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Keep in mind that for maximal compatibility and utility `wezterm` aims to
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be compatible with the `xterm` behavior.
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https://invisible-island.net/xterm/ctlseqs/ctlseqs.html is a useful resource!
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The `src` directory holds the code for the `wezterm` program. This is
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the GUI renderer for the terminal model. If you want to change something
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about the GUI you want to be in the `src` dir.
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### Iterating
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I tend to iterate and sanity check as I develop using `cargo check`; it
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will type-check your code without generating code which is much faster
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than building everything in release mode:
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```
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$ cargo check
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```
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Likewise, if you want to quick check that something works, you can run it
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in debug mode using:
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```
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$ cargo run
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```
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This will produce a debug instrumented binary with poor optimization. This will
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give you more detail in the backtrace produced if you run `RUST_BACKTRACE=1 cargo run`.
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If you get a panic and want to examine local variables, you'll need to use gdb:
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```
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$ cargo build
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$ gdb ./target/debug/wezterm
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$ break rust_panic # hit tab to complete the name of the panic symbol!
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$ run
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$ bt
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```
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### Please include tests to cover your changes!
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This will help ensure that your contributings keep working as things change.
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You can run the existing tests using:
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```
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$ cargo test --all
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```
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There are some helper classes for writing tests for terminal behavior.
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Here's an example of a test to verify that the terminal contents
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match expectations:
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https://github.com/wez/wezterm/blob/master/term/src/test/mod.rs#L334
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Please also make a point of adding comments to your tests to help
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clarify the intent of the test!
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### Please also include documentation if you are adding or changing behavior
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This helps to keep things well-understood and working in the long term.
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Don't worry if you're not a wordsmith or English isn't your first language as
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I can help with that. It is more important to capture the intent of the
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feature and having this written out in English also helps when it comes
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to reviewing the code.
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## Submitting a Pull Request
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After considering all of the above, and once you're prepared your contribution
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and are ready to submit it, you'll need to create a pull request.
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If you're new to GitHub pull requests, read through
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https://help.github.com/articles/creating-a-pull-request/ to understand
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how that process works.
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### Before your submit your code
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Make sure that the tests are working and that the code is correctly
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formatted otherwise the continuous integration system will fail your build:
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```
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$ rustup component add rustfmt-preview # you only need to do this once
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$ cargo test --all
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$ cargo fmt --all
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```
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