D19984.id47691.diff
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D19984.id47691.diff
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	diff --git a/src/parser/argument/PhutilArgumentSpellingCorrector.php b/src/parser/argument/PhutilArgumentSpellingCorrector.php
	--- a/src/parser/argument/PhutilArgumentSpellingCorrector.php
	+++ b/src/parser/argument/PhutilArgumentSpellingCorrector.php
	@@ -4,6 +4,10 @@

	private $editDistanceMatrix;
	private $maximumDistance;
	+ private $mode;
	+
	+ const MODE_COMMANDS = 'commands';
	+ const MODE_FLAGS = 'flags';

	/**
	* Build a new corrector with parameters for correcting commands, like
	@@ -31,6 +35,7 @@

	return id(new self())
	->setEditDistanceMatrix($matrix)
	+ ->setMode(self::MODE_COMMANDS)
	->setMaximumDistance($max_distance);
	}

	@@ -55,9 +60,19 @@

	return id(new self())
	->setEditDistanceMatrix($matrix)
	+ ->setMode(self::MODE_FLAGS)
	->setMaximumDistance($max_distance);
	}

	+ public function setMode($mode) {
	+ $this->mode = $mode;
	+ return $this;
	+ }
	+
	+ public function getMode() {
	+ return $this->mode;
	+ }
	+
	public function setEditDistanceMatrix(PhutilEditDistanceMatrix $matrix) {
	$this->editDistanceMatrix = $matrix;
	return $this;
	@@ -87,6 +102,14 @@
	throw new PhutilInvalidStateException('setMaximumDistance');
	}

	+ // If we're correcting commands, never correct an input which begins
	+ // with "-", since this is almost certainly intended to be a flag.
	+ if ($this->getMode() === self::MODE_COMMANDS) {
	+ if (preg_match('/^-/', $input)) {
	+ return array();
	+ }
	+ }
	+
	$input = $this->normalizeString($input);
	foreach ($options as $key => $option) {
	$options[$key] = $this->normalizeString($option);