Add support for \b and ^ and $ in multiline mode, completing Irregexp...

src/string.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 554 matching lines @@
 
 
 // ECMA-262 section 15.5.4.14
 // Helper function used by split.
 function splitMatch(separator, subject, current_index, start_index) {
   if (IS_REGEXP(separator)) {
     var ovector = DoRegExpExec(separator, subject, start_index);
     if (ovector == null) return null;
     var nof_results = ovector.length >> 1;
     var result = new $Array(nof_results + 1);
+    // Section 15.5.4.14 paragraph two says that we do not allow zero length
+    // matches at the end of the string.
+    if (ovector[0] === subject.length) return null;
     result[0] = ovector[1];
     result[1] = subject.slice(current_index, ovector[0]);
     for (var i = 1; i < nof_results; i++) {
       var matching_start = ovector[2*i];
       var matching_end = ovector[2*i + 1];
       if (matching_start != -1 && matching_end != -1) {
         result[i + 1] = subject.slice(matching_start, matching_end);
       }
     }
     return result;
@@ skipping 272 matching lines @@
     "italics", StringItalics,
     "small", StringSmall,
     "strike", StringStrike,
     "sub", StringSub,
     "sup", StringSup
   ));
 }
 
 
 SetupString();