Fix some edge case.
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@ -52,7 +52,8 @@ class Util {
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public static function ends_with($sequence, $tail) {
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public static function ends_with($sequence, $tail) {
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return substr($sequence, -strlen($tail)) === $tail;
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$len = strlen($tail);
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return $len === 0 ? true : substr($sequence, -$len) === $tail;
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}
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}
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public static function wrap_pattern($pattern) {
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public static function wrap_pattern($pattern) {
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