imediff(1) on Linux
The text 59bee007012e, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
An interactive fullscreen merge tool for 2 or 3 files
Flags it lists
-
--help -
--mode -
--mono -
--output -
--sloppy -
--template -
--version -
-V -
-a -
-b -
-c -
-d -
-f -
-g -
-h -
-m -
-n -
-o -
-t