diff3(1) on Linux
The text c1b971044e8f, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
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--diff-program -
--easy-only -
--ed -
--help -
--initial-tab -
--merge -
--overlap-only -
--show-all -
--show-overlap -
--text -
--version -
-3 -
-A -
-E -
-T -
-X -
-a -
-e -
-i -
-m -
-v -
-x