merged branch jakzal/console-single-dash-argument (PR symfony#9014)

This PR was merged into the 2.2 branch.

Discussion
----------

[Console] Fixed argument parsing when a single dash is passed.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#8986
| License       | MIT
| Doc PR        |

Commits
-------

42019f6 [Console] Fixed argument parsing when a single dash is passed.

src/Symfony/Component/Console/Input/ArgvInput.php

@@ -84,7 +84,7 @@ protected function parse()
                 $parseOptions = false;
             } elseif ($parseOptions && 0 === strpos($token, '--')) {
                 $this->parseLongOption($token);
-            } elseif ($parseOptions && '-' === $token[0]) {
+            } elseif ($parseOptions && '-' === $token[0] && '-' !== $token) {
                 $this->parseShortOption($token);
             } else {
                 $this->parseArgument($token);

src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php

@@ -254,4 +254,11 @@ public function provideGetParameterOptionValues()
             array(array('app/console', 'foo:bar', '--env=dev', '--en=1'), array('--en'), '1'),
         );
     }
+
+    public function testParseSingleDashAsArgument()
+    {
+        $input = new ArgvInput(array('cli.php', '-'));
+        $input->bind(new InputDefinition(array(new InputArgument('file'))));
+        $this->assertEquals(array('file' => '-'), $input->getArguments(), '->parse() parses single dash as an argument');
+    }
 }