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diff --git a/vendor/symfony/var-dumper/Dumper/AbstractDumper.php b/vendor/symfony/var-dumper/Dumper/AbstractDumper.php
index 4e72c1887..e27675ad1 100644
--- a/vendor/symfony/var-dumper/Dumper/AbstractDumper.php
+++ b/vendor/symfony/var-dumper/Dumper/AbstractDumper.php
@@ -21,6 +21,11 @@ use Symfony\Component\VarDumper\Cloner\DumperInterface;
  */
 abstract class AbstractDumper implements DataDumperInterface, DumperInterface
 {
+    const DUMP_LIGHT_ARRAY = 1;
+    const DUMP_STRING_LENGTH = 2;
+    const DUMP_COMMA_SEPARATOR = 4;
+    const DUMP_TRAILING_COMMA = 8;
+
     public static $defaultOutput = 'php://output';
 
     protected $line = '';
@@ -28,18 +33,21 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
     protected $outputStream;
     protected $decimalPoint; // This is locale dependent
     protected $indentPad = '  ';
+    protected $flags;
 
     private $charset;
 
     /**
      * @param callable|resource|string|null $output  A line dumper callable, an opened stream or an output path, defaults to static::$defaultOutput
      * @param string                        $charset The default character encoding to use for non-UTF8 strings
+     * @param int                           $flags   A bit field of static::DUMP_* constants to fine tune dumps representation
      */
-    public function __construct($output = null, $charset = null)
+    public function __construct($output = null, $charset = null, $flags = 0)
     {
+        $this->flags = (int) $flags;
         $this->setCharset($charset ?: ini_get('php.output_encoding') ?: ini_get('default_charset') ?: 'UTF-8');
-        $this->decimalPoint = (string) 0.5;
-        $this->decimalPoint = $this->decimalPoint[1];
+        $this->decimalPoint = localeconv();
+        $this->decimalPoint = $this->decimalPoint['decimal_point'];
         $this->setOutput($output ?: static::$defaultOutput);
         if (!$output && is_string(static::$defaultOutput)) {
             static::$defaultOutput = $this->outputStream;
@@ -93,9 +101,9 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
     /**
      * Sets the indentation pad string.
      *
-     * @param string $pad A string the will be prepended to dumped lines, repeated by nesting level
+     * @param string $pad A string that will be prepended to dumped lines, repeated by nesting level
      *
-     * @return string The indent pad
+     * @return string The previous indent pad
      */
     public function setIndentPad($pad)
     {
@@ -108,35 +116,51 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
     /**
      * Dumps a Data object.
      *
-     * @param Data                          $data   A Data object
-     * @param callable|resource|string|null $output A line dumper callable, an opened stream or an output path
+     * @param Data                               $data   A Data object
+     * @param callable|resource|string|true|null $output A line dumper callable, an opened stream, an output path or true to return the dump
+     *
+     * @return string|null The dump as string when $output is true
      */
     public function dump(Data $data, $output = null)
     {
-        $exception = null;
+        $this->decimalPoint = localeconv();
+        $this->decimalPoint = $this->decimalPoint['decimal_point'];
+
+        if ($locale = $this->flags & (self::DUMP_COMMA_SEPARATOR | self::DUMP_TRAILING_COMMA) ? setlocale(LC_NUMERIC, 0) : null) {
+            setlocale(LC_NUMERIC, 'C');
+        }
+
+        if ($returnDump = true === $output) {
+            $output = fopen('php://memory', 'r+b');
+        }
         if ($output) {
             $prevOutput = $this->setOutput($output);
         }
         try {
             $data->dump($this);
             $this->dumpLine(-1);
-        } catch (\Exception $exception) {
-            // Re-thrown below
-        } catch (\Throwable $exception) {
-            // Re-thrown below
-        }
-        if ($output) {
-            $this->setOutput($prevOutput);
-        }
-        if (null !== $exception) {
-            throw $exception;
+
+            if ($returnDump) {
+                $result = stream_get_contents($output, -1, 0);
+                fclose($output);
+
+                return $result;
+            }
+        } finally {
+            if ($output) {
+                $this->setOutput($prevOutput);
+            }
+            if ($locale) {
+                setlocale(LC_NUMERIC, $locale);
+            }
         }
     }
 
     /**
      * Dumps the current line.
      *
-     * @param int $depth The recursive depth in the dumped structure for the line being dumped
+     * @param int $depth The recursive depth in the dumped structure for the line being dumped,
+     *                   or -1 to signal the end-of-dump to the line dumper callable
      */
     protected function dumpLine($depth)
     {
@@ -167,9 +191,14 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
      */
     protected function utf8Encode($s)
     {
+        if (preg_match('//u', $s)) {
+            return $s;
+        }
+
         if (!function_exists('iconv')) {
             throw new \RuntimeException('Unable to convert a non-UTF-8 string to UTF-8: required function iconv() does not exist. You should install ext-iconv or symfony/polyfill-iconv.');
         }
+
         if (false !== $c = @iconv($this->charset, 'UTF-8', $s)) {
             return $c;
         }