--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Behat\Definition\Exception;
+
+use Behat\Behat\Definition\Definition;
+use RuntimeException;
+
+/**
+ * Represents an exception caused by an ambiguous step definition match.
+ *
+ * If multiple definitions match the same step, behat is not able to determine which one is better and thus this
+ * exception is thrown and test suite is stopped.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+final class AmbiguousMatchException extends RuntimeException implements SearchException
+{
+ /**
+ * @var string
+ */
+ private $text;
+ /**
+ * @var Definition[]
+ */
+ private $matches = array();
+
+ /**
+ * Initializes ambiguous exception.
+ *
+ * @param string $text step description
+ * @param Definition[] $matches ambiguous matches (array of Definition's)
+ */
+ public function __construct($text, array $matches)
+ {
+ $this->text = $text;
+ $this->matches = $matches;
+
+ $message = sprintf("Ambiguous match of \"%s\":", $text);
+ foreach ($matches as $definition) {
+ $message .= sprintf(
+ "\nto `%s` from %s",
+ $definition->getPattern(),
+ $definition->getPath()
+ );
+ }
+
+ parent::__construct($message);
+ }
+}