DIFF_WITH_ALG    3798 diff.c         		options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
DIFF_WITH_ALG    3800 diff.c         		options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
DIFF_WITH_ALG    2070 merge-recursive.c 		o->xdl_opts = DIFF_WITH_ALG(o, PATIENCE_DIFF);
DIFF_WITH_ALG    2072 merge-recursive.c 		o->xdl_opts = DIFF_WITH_ALG(o, HISTOGRAM_DIFF);