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Improve example linter to not lint deleted paths
Summary: It's easy to forget to do this when writing a new lint engine (like I recently just did), so I added it to the example to improve documentation on how to write a lint engine. This code is copied from PhutilLintEngine (as well as many others). Test Plan: php -l Reviewers: jungejason, vrana, epriestley Reviewed By: epriestley CC: aran, Koolvin Differential Revision: https://secure.phabricator.com/D2553
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@ -40,6 +40,16 @@ final class ExampleLintEngine extends ArcanistLintEngine {
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// and raising warnings and errors.
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$pylint_linter = new ArcanistPyLintLinter();
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// Remove any paths that don't exist before we add paths to linters. We want
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// to do this for linters that operate on file contents because the
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// generated list of paths will include deleted paths when a file is
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// removed.
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foreach ($paths as $key => $path) {
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if (!$this->pathExists($path)) {
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unset($paths[$key]);
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}
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}
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foreach ($paths as $path) {
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if (!preg_match('/\.py$/', $path)) {
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// This isn't a python file, so don't try to apply the PyLint linter
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