fix postgresl-fts indexer: get_indexer reported not implemented When I implemented postgresql fts indexing I forgot to remove code that raised NotImplemented when it was requested. Also had to fix import to match filename. Added tests for native-fts paths in get_indexer.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))