[Console] Revert StringInput bc break from #45088

bobthecow · bobthecow · commit ad6c72545eff · 2022-01-29T16:19:38.000-05:00
diff --git a/src/Symfony/Component/Console/Input/StringInput.php b/src/Symfony/Component/Console/Input/StringInput.php
@@ -24,7 +24,9 @@
  */
 class StringInput extends ArgvInput
 {
-    public const REGEX_STRING = '([^\s\\\\]+?)';
+    // @deprecated constant replaced by REGEX_UNQUOTED_STRING, to be removed in Symfony 7.0
+    public const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
+    public const REGEX_UNQUOTED_STRING = '([^\s\\\\]+?)';
     public const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
 
     /**
@@ -64,7 +66,7 @@ private function tokenize(string $input): array
                 $token .= $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, -1)));
             } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, 0, $cursor)) {
                 $token .= stripcslashes(substr($match[0], 1, -1));
-            } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, 0, $cursor)) {
+            } elseif (preg_match('/'.self::REGEX_UNQUOTED_STRING.'/A', $input, $match, 0, $cursor)) {
                 $token .= $match[1];
             } else {
                 // should never happen
