git-difftool(1) on Linux
The text 9552650f5778, as Debian 9 (Stretch) shipped it.
Show changes using common diff tools
Flags it lists
-
--dir-diff -
--extcmd -
--gui -
--no-prompt -
--prompt -
--tool -
--tool-help -
-d -
-g -
-t -
-x -
-y