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167 lines
4.8 KiB
Markdown
167 lines
4.8 KiB
Markdown
# typos
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> **Source code spell checker**
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Finds and corrects spelling mistakes among source code:
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- Fast enough to run on monorepos
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- Low false positives so you can run on PRs
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[](https://codecov.io/gh/crate-ci/typos)
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[][Documentation]
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[](https://crates.io/crates/typos)
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Dual-licensed under [MIT](LICENSE-MIT) or [Apache 2.0](LICENSE-APACHE)
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## Documentation
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- [Installation](#install)
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- [Getting Started](#getting-started)
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- [False Positives](#false-positives)
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- [Integrations](#integrations)
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- [GitHub Action](docs/github-action.md)
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- [pre-commit](docs/pre-commit.md)
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- [Custom](#custom)
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- [Debugging](#debugging)
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- [Reference](docs/reference.md)
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- [FAQ](#faq)
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- [Comparison with other spell checkers](docs/comparison.md)
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- [Projects using typos](https://github.com/crate-ci/typos/wiki)
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- [Benchmarks](benchsuite/runs)
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- [Design](docs/design.md)
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- [Contribute](CONTRIBUTING.md)
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- [CHANGELOG](CHANGELOG.md)
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## Install
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[Download](https://github.com/crate-ci/typos/releases) a pre-built binary
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(installable via [gh-install](https://github.com/crate-ci/gh-install)).
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Or use rust to install:
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```bash
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cargo install typos-cli
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```
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Or use [Homebrew](https://brew.sh/) to install:
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```bash
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brew install typos-cli
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```
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Or use [Conda](https://conda.io/) to install:
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```bash
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conda install typos
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```
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## Getting Started
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Most commonly, you'll either want to see what typos are available with
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```bash
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typos
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```
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Or have them fixed
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```bash
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typos --write-changes
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typos -w
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```
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If there is any ambiguity (multiple possible corrections), `typos` will just report it to the user and move on.
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### False-positives
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Sometimes, what looks like a typo is intentional, like with people's names, acronyms, or localized content.
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To mark a word or an identifier (grouping of words) as valid, add it your [`_typos.toml`](docs/reference.md) by declaring itself as the valid spelling:
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```toml
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[default]
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extend-ignore-identifiers-re = [
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# *sigh* this just isn't worth the cost of fixing
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"AttributeID.*Supress.*",
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]
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[default.extend-identifiers]
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# *sigh* this just isn't worth the cost of fixing
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AttributeIDSupressMenu = "AttributeIDSupressMenu"
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[default.extend-words]
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# Don't correct the surname "Teh"
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teh = "teh"
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```
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For cases like localized content, you can disable spell checking of file contents while still checking the file name:
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```toml
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[type.po]
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extend-glob = ["*.po"]
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check-file = false
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```
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(run `typos --type-list` to see configured file types)
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If you need some more flexibility, you can completely exclude some files from consideration:
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```toml
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[files]
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extend-exclude = ["localized/*.po"]
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```
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### Integrations
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- [GitHub Actions](docs/github-action.md)
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- [pre-commit](docs/pre-commit.md)
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- [🐊Putout Processor](https://github.com/putoutjs/putout-processor-typos)
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- [Visual Studio Code](https://github.com/tekumara/typos-vscode)
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#### Custom
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`typos` provides several building blocks for custom native integrations
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- `-` reads from `stdin`, `--write-changes` will be written to `stdout`
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- `--diff` to provide a diff
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- `--format json` to get jsonlines with exit code 0 on no errors, code 2 on typos, anything else is an error.
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Examples:
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```bash
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# Read file from stdin, write corrected version to stdout
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typos - --write-changes
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# Creates a diff of what would change
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typos dir/file --diff
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# Fully programmatic control
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typos dir/file --format json
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```
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### Debugging
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You can see what the effective config looks like by running
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```bash
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typos --dump-config -
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```
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You can then see how typos is processing your project with
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```bash
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typos --files
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typos --identifiers
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typos --words
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```
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If you need to dig in more, you can enable debug logging with `-v`
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## FAQ
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### Why was ... not corrected?
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tl;dr `typos` doesn't know about it yet
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`typos` maintains a list of known typo corrections to keep the false positive
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count low so it can safely run unassisted.
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This is in contrast to most spell checking UIs people use where there is a
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known list of valid words. In this case, the spell checker tries to guess your
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intent by finding the closest-looking word. It then has a gauge for when a
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word isn't close enough and assumes you know best. The user has the
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opportunity to verify these corrections and explicitly allow or reject them.
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For more on the trade offs of these approaches, see [Design](docs/design.md).
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- To correct it locally, see also our [False Positives documentation](#false-positives).
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- To contribute your correction, see [Contribute](CONTRIBUTING.md)
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[Crates.io]: https://crates.io/crates/typos-cli
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[Documentation]: https://docs.rs/typos
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