sync: overlap check is now filter-sensitive

Previously, the overlap check was based on simple prefix checks of the source and destination paths. Now it actually checks whether the destination is excluded via any filter rule or a "--exclude-if-present"-file.

fs/sync/sync.go

@@ -97,7 +97,7 @@ func (strategy trackRenamesStrategy) leaf() bool {
 }
 
 func newSyncCopyMove(ctx context.Context, fdst, fsrc fs.Fs, deleteMode fs.DeleteMode, DoMove bool, deleteEmptySrcDirs bool, copyEmptySrcDirs bool) (*syncCopyMove, error) {
-	if (deleteMode != fs.DeleteModeOff || DoMove) && operations.Overlapping(fdst, fsrc) {
+	if (deleteMode != fs.DeleteModeOff || DoMove) && operations.OverlappingFilterCheck(ctx, fdst, fsrc) {
 		return nil, fserrors.FatalError(fs.ErrorOverlapping)
 	}
 	ci := fs.GetConfig(ctx)