D21338.id50797.diff
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D21338.id50797.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
	@@ -115,6 +115,21 @@
	$options[$key] = $this->normalizeString($option);
	}

	+ // In command mode, accept any unique prefix of a command as a shorthand
	+ // for that command.
	+ if ($this->getMode() === self::MODE_COMMANDS) {
	+ $prefixes = array();
	+ foreach ($options as $option) {
	+ if (!strncmp($input, $option, strlen($input))) {
	+ $prefixes[] = $option;
	+ }
	+ }
	+
	+ if (count($prefixes) === 1) {
	+ return $prefixes;
	+ }
	+ }
	+
	$distances = array();
	$inputv = phutil_utf8v($input);
	foreach ($options as $option) {