imediff2(1) on Linux
The text 02ca1f0d8f7e, as Debian 3.1 (Sarge) shipped it.
An interactive fullscreen 2-way merge tool
Flags it lists
-
--help -
--mono -
--output -
--unresolved -
--version -
-V -
-a -
-b -
-c -
-h -
-m -
-o -
-u