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diff --git a/vendor/stecman/symfony-console-completion/src/CompletionCommand.php b/vendor/stecman/symfony-console-completion/src/CompletionCommand.php
new file mode 100644
index 000000000..b51666a1d
--- /dev/null
+++ b/vendor/stecman/symfony-console-completion/src/CompletionCommand.php
@@ -0,0 +1,144 @@
+<?php
+
+namespace Stecman\Component\Symfony\Console\BashCompletion;
+
+use Symfony\Component\Console\Command\Command as SymfonyCommand;
+use Symfony\Component\Console\Input\InputDefinition;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class CompletionCommand extends SymfonyCommand
+{
+
+    /**
+     * @var CompletionHandler
+     */
+    protected $handler;
+
+    protected function configure()
+    {
+        $this
+            ->setName('_completion')
+            ->setDefinition($this->createDefinition())
+            ->setDescription('BASH completion hook.')
+            ->setHelp(<<<END
+To enable BASH completion, run:
+
+    <comment>eval `[program] _completion -g`</comment>.
+
+Or for an alias:
+
+    <comment>eval `[program] _completion -g -p [alias]`</comment>.
+
+END
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNativeDefinition()
+    {
+        return $this->createDefinition();
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $this->handler = new CompletionHandler($this->getApplication());
+        $handler = $this->handler;
+
+        if ($input->getOption('generate-hook')) {
+            global $argv;
+            $program = $argv[0];
+
+            $factory = new HookFactory();
+            $alias = $input->getOption('program');
+            $multiple = (bool)$input->getOption('multiple');
+
+            // When completing for multiple apps having absolute path in the alias doesn't make sense.
+            if (!$alias && $multiple) {
+                $alias = basename($program);
+            }
+
+            $hook = $factory->generateHook(
+                $input->getOption('shell-type') ?: $this->getShellType(),
+                $program,
+                $alias,
+                $multiple
+            );
+
+            $output->write($hook, true);
+        } else {
+            $handler->setContext(new EnvironmentCompletionContext());
+            $output->write($this->runCompletion(), true);
+        }
+    }
+
+    /**
+     * Run the completion handler and return a filtered list of results
+     *
+     * @deprecated - This will be removed in 1.0.0 in favour of CompletionCommand::configureCompletion
+     *
+     * @return string[]
+     */
+    protected function runCompletion()
+    {
+        $this->configureCompletion($this->handler);
+        return $this->handler->runCompletion();
+    }
+
+    /**
+     * Configure the CompletionHandler instance before it is run
+     *
+     * @param CompletionHandler $handler
+     */
+    protected function configureCompletion(CompletionHandler $handler)
+    {
+        // Override this method to configure custom value completions
+    }
+
+    /**
+     * Determine the shell type for use with HookFactory
+     *
+     * @return string
+     */
+    protected function getShellType()
+    {
+        if (!getenv('SHELL')) {
+            throw new \RuntimeException('Could not read SHELL environment variable. Please specify your shell type using the --shell-type option.');
+        }
+
+        return basename(getenv('SHELL'));
+    }
+
+    protected function createDefinition()
+    {
+        return new InputDefinition(array(
+            new InputOption(
+                'generate-hook',
+                'g',
+                InputOption::VALUE_NONE,
+                'Generate BASH code that sets up completion for this application.'
+            ),
+            new InputOption(
+                'program',
+                'p',
+                InputOption::VALUE_REQUIRED,
+                "Program name that should trigger completion\n<comment>(defaults to the absolute application path)</comment>."
+            ),
+            new InputOption(
+                'multiple',
+                'm',
+                InputOption::VALUE_NONE,
+                "Generated hook can be used for multiple applications."
+            ),
+            new InputOption(
+                'shell-type',
+                null,
+                InputOption::VALUE_OPTIONAL,
+                'Set the shell type (zsh or bash). Otherwise this is determined automatically.'
+            ),
+        ));
+    }
+}