ucto(1) on Linux
The text b4253cecae16, as Debian 7 (Wheezy) shipped it.
Unicode Tokenizer
Flags it lists
-
--passthru -
-F -
-L -
-P -
-Q -
-S -
-V -
-c -
-d -
-e -
-f -
-l -
-m -
-n -
-s -
-u -
-v -
-x