lib/puppet/network/formats.rb in puppet-3.1.0.rc1 vs lib/puppet/network/formats.rb in puppet-3.1.0.rc2

@@ -146,10 +146,10 @@
     return datum if datum.is_a? Numeric
 
     # Simple hash to table
     if datum.is_a? Hash and datum.keys.all? { |x| x.is_a? String or x.is_a? Numeric }
       output = ''
-      column_a = datum.map do |k,v| k.to_s.length end.max + 2
+      column_a = datum.empty? ? 2 : datum.map{ |k,v| k.to_s.length }.max + 2
       column_b = 79 - column_a
       datum.sort_by { |k,v| k.to_s } .each do |key, value|
         output << key.to_s.ljust(column_a)
         output << json.render(value).
           chomp.gsub(/\n */) { |x| x + (' ' * column_a) }