tcsh(1) on Linux
The text 6816e9a7d80b, as Debian 12 (Bookworm) shipped it.
C shell with file name completion and command line editing
Flags it lists
-
--help -
--version -
-A -
-C -
-D -
-F -
-G -
-I -
-L -
-M -
-N -
-P -
-R -
-S -
-U -
-V -
-X -
-Z -
-b -
-c -
-d -
-e -
-f -
-g -
-i -
-k -
-l -
-m -
-n -
-o -
-op -
-p -
-q -
-r -
-s -
-t -
-u -
-v -
-w -
-x -
-z