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diff --git a/vendor/sebastian/environment/src/Console.php b/vendor/sebastian/environment/src/Console.php
new file mode 100644
index 000000000..2aff1d658
--- /dev/null
+++ b/vendor/sebastian/environment/src/Console.php
@@ -0,0 +1,113 @@
+<?php
+/*
+ * This file is part of the Environment package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SebastianBergmann\Environment;
+
+/**
+ */
+class Console
+{
+    const STDIN  = 0;
+    const STDOUT = 1;
+    const STDERR = 2;
+
+    /**
+     * Returns true if STDOUT supports colorization.
+     *
+     * This code has been copied and adapted from
+     * Symfony\Component\Console\Output\OutputStream.
+     *
+     * @return bool
+     */
+    public function hasColorSupport()
+    {
+        if (DIRECTORY_SEPARATOR == '\\') {
+            return false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI') || 'xterm' === getenv('TERM');
+        }
+
+        if (!defined('STDOUT')) {
+            return false;
+        }
+
+        return $this->isInteractive(STDOUT);
+    }
+
+    /**
+     * Returns the number of columns of the terminal.
+     *
+     * @return int
+     */
+    public function getNumberOfColumns()
+    {
+        if (DIRECTORY_SEPARATOR == '\\') {
+            $columns = 80;
+
+            if (preg_match('/^(\d+)x\d+ \(\d+x(\d+)\)$/', trim(getenv('ANSICON')), $matches)) {
+                $columns = $matches[1];
+            } elseif (function_exists('proc_open')) {
+                $process = proc_open(
+                    'mode CON',
+                    array(
+                        1 => array('pipe', 'w'),
+                        2 => array('pipe', 'w')
+                    ),
+                    $pipes,
+                    null,
+                    null,
+                    array('suppress_errors' => true)
+                );
+
+                if (is_resource($process)) {
+                    $info = stream_get_contents($pipes[1]);
+
+                    fclose($pipes[1]);
+                    fclose($pipes[2]);
+                    proc_close($process);
+
+                    if (preg_match('/--------+\r?\n.+?(\d+)\r?\n.+?(\d+)\r?\n/', $info, $matches)) {
+                        $columns = $matches[2];
+                    }
+                }
+            }
+
+            return $columns - 1;
+        }
+
+        if (!$this->isInteractive(self::STDIN)) {
+            return 80;
+        }
+
+        if (function_exists('shell_exec') && preg_match('#\d+ (\d+)#', shell_exec('stty size'), $match) === 1) {
+            if ((int) $match[1] > 0) {
+                return (int) $match[1];
+            }
+        }
+
+        if (function_exists('shell_exec') && preg_match('#columns = (\d+);#', shell_exec('stty'), $match) === 1) {
+            if ((int) $match[1] > 0) {
+                return (int) $match[1];
+            }
+        }
+
+        return 80;
+    }
+
+    /**
+     * Returns if the file descriptor is an interactive terminal or not.
+     *
+     * @param int|resource $fileDescriptor
+     *
+     * @return bool
+     */
+    public function isInteractive($fileDescriptor = self::STDOUT)
+    {
+        return function_exists('posix_isatty') && @posix_isatty($fileDescriptor);
+    }
+}