n option parsed, not respected yet

Author: jakubmisek

src/Peachpie.Library.RegularExpressions/RegexOptions.cs

@@ -50,11 +50,16 @@ public enum RegexOptions
         /// </summary>
         PCRE2_DUPNAMES = 0x10000,           // J
 
+        /// <summary>
+        /// Disables the use of numbered capturing parentheses in the pattern.
+        /// </summary>
+        PCRE2_NO_AUTO_CAPTURE = 0x20000,    // n
+
         ///// <summary>
         ///// Evaluate as PHP code.
         ///// Deprecated and removed.
         ///// </summary>
-        //PREG_REPLACE_EVAL = 0x10000,        // e
+        //PREG_REPLACE_EVAL = 0x40000,        // e
 
         //
         // PCRE options for newline handling

src/Peachpie.Library.RegularExpressions/RegexParser.cs

@@ -2213,6 +2213,9 @@ public static RegexOptions PcreOptionFromCode(char option, int offset)
                 case 'x': // PCRE_EXTENDED
                     return RegexOptions.PCRE_EXTENDED;
 
+                case 'n': // PCRE_NO_AUTO_CAPTURE
+                    return RegexOptions.PCRE2_NO_AUTO_CAPTURE;
+
                 case 'e': // PREG_REPLACE_EVAL // deprecated as of PHP 7.0
                     //return RegexOptions.PREG_REPLACE_EVAL;
                     return 0;