Documentation / technical / api-xdiff-interface.txton commit t0006: skip "far in the future" test when unsigned long is not long enough (6b9c38e)
   1xdiff interface API
   2===================
   3
   4Talk about our calling convention to xdiff library, including
   5xdiff_emit_consume_fn.
   6
   7(Dscho, JC)