Data.Trie.Internal: Fixed another missing case bug in mergeBy. The bug is tripped when unioning two tries with epsilon keys
Data.Trie.Internal: Fixed another missing case bug in mergeBy. The bug is tripped when unioning two tries with epsilon keys

darcs-hash:b8855ed831245100a8cee756ca4c2a0f34c93bc6

unhammer/bytestring-trie-0.2.4