ysh(1p) on Linux
The text a7c581f340b0, as Debian 8 (Jessie) shipped it.
The YAML Test Shell
Flags it lists
-
-L -
-R -
-V -
-h -
-l -
-nh -
-nv -
-r -
-ub -
-uc -
-uf -
-v