* Changed meaning of "%k" format to always output fixed-width ASCII-only representations.

regexp2000/src/string-stream.cc

 // 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 125 matching lines @@
     }
     case 'o': {
       ASSERT_EQ(FmtElm::OBJ, current.type_);
       Object* obj = current.data_.u_obj_;
       PrintObject(obj);
       break;
     }
     case 'k': {
       ASSERT_EQ(FmtElm::INT, current.type_);
       int value = current.data_.u_int_;
-      if (0x20 <= value && value <= 0xFF) {
+      if (0x20 <= value && value <= 0x7F) {
         Put(value);
+      } else if (value <= 0xff) {
+        Add("\\x%02x", value);
       } else {
-        Add("\\x%X", value);
+        Add("\\u%04x", value);
       }
       break;
     }
     case 'i': case 'd': case 'u': case 'x': case 'c': case 'p': case 'X': {
       int value = current.data_.u_int_;
       EmbeddedVector<char, 24> formatted;
       int length = OS::SNPrintF(formatted, temp.start(), value);
       Add(Vector<const char>(formatted.start(), length));
       break;
     }
@@ skipping 406 matching lines @@
   unsigned new_bytes = *bytes * 2;
   if (new_bytes > size_) {
     new_bytes = size_;
   }
   *bytes = new_bytes;
   return space_;
 }
 
 
 } }  // namespace v8::internal