twoway_merge     2008 builtin/am.c   	opts.fn = twoway_merge;
twoway_merge      505 builtin/checkout.c 		topts.fn = twoway_merge;
twoway_merge      207 builtin/read-tree.c 			opts.fn = twoway_merge;
twoway_merge       78 builtin/reset.c 		opts.fn = twoway_merge;
twoway_merge       78 merge.c        	opts.fn = twoway_merge;
twoway_merge       82 unpack-trees.h int twoway_merge(const struct cache_entry * const *src,