From e5e44c6174c7b33aa9ae2f5b5ca45af40b37ec72 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 11 Mar 2011 14:17:34 +0200
Subject: Suppress empty lines

---
 odb/emitter.cxx | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/odb/emitter.cxx b/odb/emitter.cxx
index 2989ffb..42b88b3 100644
--- a/odb/emitter.cxx
+++ b/odb/emitter.cxx
@@ -31,21 +31,24 @@ sync ()
       s.resize (n - 1);
   }
 
-  // Temporary restore output diversion.
-  //
-  bool r (false);
-  context& ctx (context::current ());
-
-  if (ctx.os.rdbuf () == this)
+  if (!s.empty ())
   {
-    ctx.restore ();
-    r = true;
-  }
+    // Temporary restore output diversion.
+    //
+    bool r (false);
+    context& ctx (context::current ());
 
-  e_.line (s);
+    if (ctx.os.rdbuf () == this)
+    {
+      ctx.restore ();
+      r = true;
+    }
 
-  if (r)
-    ctx.diverge (this);
+    e_.line (s);
+
+    if (r)
+      ctx.diverge (this);
+  }
 
   str (string ());
   return 0;
-- 
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