if (!ce_path_match(istate, ce, &revs->prune_data, NULL))
continue;
+ if (revs->diffopt.prefix &&
+ strncmp(ce->name, revs->diffopt.prefix, revs->diffopt.prefix_length))
+ continue;
+
if (ce_stage(ce)) {
struct combine_diff_path *dpath;
struct diff_filepair *pair;