Add :nbstart and :nbclose.
diff --git a/src/screen.c b/src/screen.c
index 72a93da..38d577e 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -1981,7 +1981,7 @@
 {
     return (wp->w_buffer->b_signlist != NULL
 # ifdef FEAT_NETBEANS_INTG
-			    || usingNetbeans
+			    || netbeans_active()
 # endif
 		    );
 }