.

wcfs/internal/xbtree/rangeset.go

@@ -116,7 +116,7 @@ func (S *RangeSet) AddRange(r Range) {
 
 	// and check if we should merge it with right/left neighbours
 	if ilo+1 < len(S.rangev) { // right
-		if S.rangev[ilo].hi_ == S.rangev[ilo+1].lo {
+		if S.rangev[ilo].hi_+1 == S.rangev[ilo+1].lo {
 			S.rangev = append(
 				S.rangev[:ilo],		append([]Range{
 				Range{S.rangev[ilo].lo, S.rangev[ilo+1].hi_}},