Backport PR #2491: color is supported in ironpython

changes for ongoing effort to make ipython to work under ironpython
I have activated color support.

IPython/core/interactiveshell.py

@@ -624,7 +624,7 b' class InteractiveShell(SingletonConfigurable):'
         # override sys.stdout and sys.stderr themselves, you need to do that
         # *before* instantiating this class, because io holds onto
         # references to the underlying streams.
-        if sys.platform == 'win32' and self.has_readline:
+        if (sys.platform == 'win32' or sys.platform == 'cli') and self.has_readline:
             io.stdout = io.stderr = io.IOStream(self.readline._outputfile)
         else:
             io.stdout = io.IOStream(sys.stdout)

IPython/core/magics/basic.py

@@ -309,7 +309,8 b' Currently the magic system has the following functions:""",'
         import IPython.utils.rlineimpl as readline
 
         if not shell.colors_force and \
-                not readline.have_readline and sys.platform == "win32":
+                not readline.have_readline and \
+                (sys.platform == "win32" or sys.platform == "cli"):
             msg = """\
 Proper color support under MS Windows requires the pyreadline library.
 You can find it at:

IPython/utils/rlineimpl.py

@@ -73,7 +73,7 b" if have_readline and hasattr(_rl, 'rlmain'):"
                 line = lineobj.TextLine(line)
             return _rl.add_history(line)
 
-if sys.platform == 'win32' and have_readline:
+if (sys.platform == 'win32' or sys.platform == 'cli') and have_readline:
     try:
         _outputfile=_rl.GetOutputFile()
     except AttributeError: