@@ -545,7 +545,7 @@ tail Empty = emptyError "tail"
545 unstream (S.tail (stream t)) = tail t
545 unstream (S.tail (stream t)) = tail t
548−-- | /O(1)/ Returns all but the last character of a 'Text', which must
548+-- | /O(n\/c)/ Returns all but the last character of a 'Text', which must
549-- be non-empty. Subject to fusion.
549-- be non-empty. Subject to fusion.
550init :: Text -> Text
550init :: Text -> Text
551init (Chunk t0 ts0) = go t0 ts0
551init (Chunk t0 ts0) = go t0 ts0
@@ -581,7 +581,7 @@ isSingleton :: Text -> Bool
581isSingleton = S.isSingleton . stream
581isSingleton = S.isSingleton . stream
582{-# INLINE isSingleton #-}
582{-# INLINE isSingleton #-}
584−-- | /O(1)/ Returns the last character of a 'Text', which must be
584+-- | /O(n\/c)/ Returns the last character of a 'Text', which must be
585-- non-empty. Subject to fusion.
585-- non-empty. Subject to fusion.
586last :: Text -> Char
586last :: Text -> Char
587last Empty = emptyError "last"
587last Empty = emptyError "last"