negotiator / skipping.hon commit difftool --no-index: error out on --dir-diff (and don't crash) (f3a3a02)
   1#ifndef NEGOTIATOR_SKIPPING_H
   2#define NEGOTIATOR_SKIPPING_H
   3
   4struct fetch_negotiator;
   5
   6void skipping_negotiator_init(struct fetch_negotiator *negotiator);
   7
   8#endif