From 4814ef8392dd9197a6bef7d7bc82be4c2b8e7f5d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Kim=20Nguy=E1=BB=85n?= <kn@lri.fr>
Date: Wed, 2 May 2012 14:24:36 +0200
Subject: [PATCH] Don't flush the XML printing buffer if nothing was printed.

---
 src/nodeSet.ml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/nodeSet.ml b/src/nodeSet.ml
index 944f85c..0828029 100644
--- a/src/nodeSet.ml
+++ b/src/nodeSet.ml
@@ -200,8 +200,10 @@ module Mat : S with type t = Tree.node mat =
 	  Unix.close
       in
       ignore (Unix.write fd "<xml_result>\n" 0 13);
-      iter (fun node -> Tree.print_xml v node fd) l;
-      Tree.flush v fd;
+      if l.length > 0 then begin
+	iter (fun node -> Tree.print_xml v node fd) l;
+	Tree.flush v fd;
+      end;
       ignore (Unix.write fd "</xml_result>\n" 0 14);
       finish fd
 
-- 
2.17.1