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# markdownlint-cli2-action
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> A GitHub Action to run the [`markdownlint-cli2`][markdownlint-cli2] tool
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for linting [Markdown][markdown]/[CommonMark][commonmark] files with
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[`markdownlint`][markdownlint]
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`markdownlint-cli2` has extensive support for configuring options and
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disabling or customizing `markdownlint` rules. See the
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[`markdownlint-cli2` README][markdownlint-cli2] for more information.
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`markdownlint` includes a wide variety of rules for analyzing and improving
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Markdown content. See the [`markdownlint` README][markdownlint] for more
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information.
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## Inputs
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### command (optional)
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Command to run (unset, `fix`, or `config`)
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If unspecified or `""`, the `markdownlint-cli2` command is run.
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If set to `fix`, the `markdownlint-cli2-fix` command is run and supported
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issues will be fixed automatically.
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If set to `config`, the `markdownlint-cli2-config` command is run and the
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first element of `globs` should specify a supported configuration file.
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For more detail: [documentation for `markdownlint-cli2`][command-line].
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### globs (optional)
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Glob expression(s) of files to lint (newline-delimited)
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The default `*.{md,markdown}` lints all Markdown files in the base directory
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of a project.
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For more detail: [glob syntax in `markdownlint-cli2`][glob-syntax].
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## Outputs
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[None]
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## Examples
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To lint Markdown files in the base directory of a project:
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```yaml
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- uses: DavidAnson/markdownlint-cli2-action@v5
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```
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To lint all Markdown files in a project:
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```yaml
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- uses: DavidAnson/markdownlint-cli2-action@v5
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with:
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globs: '**/*.md'
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```
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To lint specific Markdown files in a project:
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```yaml
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- uses: DavidAnson/markdownlint-cli2-action@v5
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with:
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globs: |
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README.md
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CHANGELOG.md
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docs/*.md
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```
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To prevent linting issues from failing the workflow run:
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```yaml
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- uses: DavidAnson/markdownlint-cli2-action@v5
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continue-on-error: true
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```
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See [`example.yml`][example-yml] for a simple GitHub workflow that uses
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`markdownlint-cli2-action`.
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[command-line]: https://github.com/DavidAnson/markdownlint-cli2#command-line
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[commonmark]: https://commonmark.org/
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[example-yml]: .github/workflows/example.yml
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[glob-syntax]: https://github.com/DavidAnson/markdownlint-cli2#use
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[markdown]: https://wikipedia.org/wiki/Markdown
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[markdownlint]: https://github.com/DavidAnson/markdownlint
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[markdownlint-cli2]: https://github.com/DavidAnson/markdownlint-cli2
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