# HG changeset patch
# User bsw
# Date 1414407751 -3600
# Node ID 533e41fab403a274dfed16407dd6edd96ab1e0ae
# Parent  286bbd976e84533dcc5142362c5c832c77caf0f7
Let format.interval_text return nil if no value nil is given as value

diff -r 286bbd976e84 -r 533e41fab403 env/format/interval_text.lua
--- a/env/format/interval_text.lua	Mon Oct 27 11:57:18 2014 +0100
+++ b/env/format/interval_text.lua	Mon Oct 27 12:02:31 2014 +0100
@@ -1,4 +1,7 @@
 function format.interval_text(value, options)
+  if not value then
+    return nil
+  end
   
   local options = options or {}