rev_sort_order    642 builtin/show-branch.c 	enum rev_sort_order sort_order = REV_SORT_IN_GRAPH_ORDER;
rev_sort_order    657 commit.c       void sort_in_topological_order(struct commit_list **list, enum rev_sort_order sort_order)
rev_sort_order    230 commit.h       void sort_in_topological_order(struct commit_list **, enum rev_sort_order);
rev_sort_order     75 revision.h     	enum rev_sort_order sort_order;