Add a workaround for python codec normalization

Author: bodograumann

iconvcodec.py

@@ -80,8 +80,14 @@ def _iconv_decode_impl(decoder, msg, errors, bufsize=None):
 
 
 def codec_factory(encoding):
-    encoder = iconv.open(encoding, "utf-8")
-    decoder = iconv.open("utf-8", encoding)
+    # Workaround for https://github.com/bodograumann/python-iconv/issues/4
+    _encoding = encoding \
+        .replace("_translit", "//TRANSLIT") \
+        .replace("_ignore", "//IGNORE") \
+        .replace("_non_identical_discard", "//NON_IDENTICAL_DISCARD")
+
+    encoder = iconv.open(_encoding, "utf-8")
+    decoder = iconv.open("utf-8", _encoding)
 
     def encode(inp, errors="strict"):
         msg = inp.encode()