[dart:io][windows] Don't enable ENABLE_VIRTUAL_TERMINAL_INPUT

runtime/bin/platform_win.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(HOST_OS_WINDOWS)
 
 #include "bin/platform.h"
 
 #include <crtdbg.h>
@@ skipping 72 matching lines @@
     SetConsoleOutputCP(CP_UTF8);
     SetConsoleCP(CP_UTF8);
 
     // Try to set the bits for ANSI support, but swallow any failures.
     HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
     DWORD out_mode;
     if ((out != INVALID_HANDLE_VALUE) && GetConsoleMode(out, &out_mode)) {
       const DWORD request = out_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING;
       SetConsoleMode(out, request);
     }
-    HANDLE in = GetStdHandle(STD_INPUT_HANDLE);
-    DWORD in_mode;
-    if ((in != INVALID_HANDLE_VALUE) && GetConsoleMode(in, &in_mode)) {
-      const DWORD request = in_mode | ENABLE_VIRTUAL_TERMINAL_INPUT;
-      SetConsoleMode(in, request);
-    }
+    // TODO(28984): Due to issue #29104, we cannot set
+    // ENABLE_VIRTUAL_TERMINAL_INPUT here, as it causes ENABLE_PROCESSED_INPUT
+    // to be ignored.
   }
 
   static void RestoreConsole() {
     MutexLocker ml(platform_win_mutex_);
     RestoreConsoleLocked();
   }
 
  private:
   static Mutex* platform_win_mutex_;
   static int saved_output_cp_;
@@ skipping 165 matching lines @@
   PlatformWin::RestoreConsole();
   // On Windows we use ExitProcess so that threads can't clobber the exit_code.
   // See: https://code.google.com/p/nativeclient/issues/detail?id=2870
   ::ExitProcess(exit_code);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_WINDOWS)