aediff(1) on Linux
The text ffc7774065ef, as Debian 4.0 (Etch) shipped it.
file differences between deltas
Flags it lists
-
-BaseLine -
-Help -
-Ignore_All_Space -
-Ignore_Blank_Lines -
-Ignore_Case -
-Ignore_Space_Change -
-Show_C_Function -
-TRunk