Documentation / technical / api-xdiff-interface.txton commit Merge branch 'fc/do-not-use-the-index-in-add-to-index' (6bf2227)
   1xdiff interface API
   2===================
   3
   4Talk about our calling convention to xdiff library, including
   5xdiff_emit_consume_fn.
   6
   7(Dscho, JC)