D8326.id19800.diff
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D8326.id19800.diff
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	diff --git a/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php b/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
	--- a/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
	+++ b/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
	@@ -247,6 +247,11 @@
	'{node}\n',
	hgsprintf('%s', $new_head));
	}
	+
	+ $stdout = trim($stdout);
	+ if (!strlen($stdout)) {
	+ return array();
	+ }
	return phutil_split_lines($stdout, $retain_newlines = false);
	case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
	if ($all_closing_heads) {
	@@ -261,6 +266,11 @@
	'%H',
	$new_head);
	}
	+
	+ $stdout = trim($stdout);
	+ if (!strlen($stdout)) {
	+ return array();
	+ }
	return phutil_split_lines($stdout, $retain_newlines = false);
	default:
	throw new Exception(pht('Unsupported VCS "%s"!', $vcs));