clutter is GO. I don't see any critical problems.
clutter is libraries for OpenGL based renderring.
If we use clutter for output and gtk for input, there is no problem.
* clutter, clutter-gst, clutter-cairo, clutter-gtk: GO
Message I18N
============
* N/A: not required for CLI.
bug 6790362 is fixed in community.
Printing
========
* N/A
String
======
* OK: works with libgtk-x11.so in clutter-gtk.
File operation
==============
* OK: works with libglib.so.
Character set
=============
* OK: libglib.so is imported.
Font
====
* OK: works with libpangocairo.so.
Locale
======
* OK: locale can be imported.
Key map
=======
* OK: clutter_key_event_unicode() works fine.
Short cut key
=============
* OK: clutter_x11_add_filter() or GTK key_press callback works.
Input Method
============
* OK: This is a little complicated for me. I could launch input method
with ClutterEntry and hidden GtkEntry but still needs enhancements.
If we won't use GTK, clutter_x11_add_filter() is another option.
Image, Sound, Movie
===================
* N/A: no topic for i18n with clutter-gst.
Accessibility
=============
* N/A
CDE compatibility
=================
* N/A