Unbreak console=readline.

src/d8-readline.cc

 // Copyright 2012 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 91 matching lines @@
   return write_history(kHistoryFileName) == 0;
 }
 
 
 Handle<String> ReadLineEditor::Prompt(const char* prompt) {
   char* result = NULL;
   {  // Release lock for blocking input.
     Unlocker unlock(Isolate::GetCurrent());
     result = readline(prompt);
   }
-  if (result != NULL) {
-    AddHistory(result);
-  } else {
-    return Handle<String>();
-  }
-  return String::New(result);
+  if (result == NULL) return Handle<String>();
+  AddHistory(result);
+  return String::NewFromUtf8(isolate_, result);
 }
 
 
 void ReadLineEditor::AddHistory(const char* str) {
   // Do not record empty input.
   if (strlen(str) == 0) return;
   // Remove duplicate history entry.
   history_set_pos(history_length-1);
   if (current_history()) {
     do {
@@ skipping 18 matching lines @@
 
 
 char* ReadLineEditor::CompletionGenerator(const char* text, int state) {
   static unsigned current_index;
   static Persistent<Array> current_completions;
   Isolate* isolate = read_line_editor.isolate_;
   Locker lock(isolate);
   HandleScope scope(isolate);
   Handle<Array> completions;
   if (state == 0) {
-    Local<String> full_text = String::New(rl_line_buffer, rl_point);
-    completions = Shell::GetCompletions(isolate, String::New(text), full_text);
+    Local<String> full_text = String::NewFromUtf8(isolate,
+                                                  rl_line_buffer,
+                                                  String::kNormalString,
+                                                  rl_point);
+    completions = Shell::GetCompletions(isolate,
+                                        String::NewFromUtf8(isolate, text),
+                                        full_text);
     current_completions.Reset(isolate, completions);
     current_index = 0;
   } else {
     completions = Local<Array>::New(isolate, current_completions);
   }
   if (current_index < completions->Length()) {
     Handle<Integer> index = Integer::New(current_index);
     Handle<Value> str_obj = completions->Get(index);
     current_index++;
     String::Utf8Value str(str_obj);
     return strdup(*str);
   } else {
     current_completions.Reset();
     return NULL;
   }
 }
 #endif  // V8_SHARED
 
 
 }  // namespace v8