Merge remote-tracking branch 'pr/56' into pull-56

Conflicts:
	lib/puppet/parser/functions/range.rb
	spec/unit/puppet/parser/functions/range_spec.rb

1 files changed, 9 insertions, 1 deletions

diff --git a/lib/puppet/parser/functions/range.rb b/lib/puppet/parser/functions/range.rb
index 825617b..0849491 100644
--- a/lib/puppet/parser/functions/range.rb
+++ b/lib/puppet/parser/functions/range.rb
@@ -27,6 +27,13 @@ Will return: ["a","b","c"]
     range("host01", "host10")
 
 Will return: ["host01", "host02", ..., "host09", "host10"]
+
+Passing a third argument will cause the generated range to step by that 
+interval, e.g.
+
+    range("0", "9", "2")
+
+Will return: [0,2,4,6,8]
     EOS
   ) do |arguments|
 
@@ -37,6 +44,7 @@ Will return: ["host01", "host02", ..., "host09", "host10"]
     if arguments.size > 1
       start = arguments[0]
       stop  = arguments[1]
+      step  = arguments[2].nil? ? 1 : arguments[2].to_i.abs
 
       type = '..' # We select simplest type for Range available in Ruby ...
 
@@ -71,7 +79,7 @@ Will return: ["host01", "host02", ..., "host09", "host10"]
         when /^(\.\.\.)$/  then (start ... stop) # Exclusive of last element ...
       end
 
-      result = range.collect { |i| i } # Get them all ... Pokemon ...
+      result = range.step(step).collect { |i| i } # Get them all ... Pokemon ...
 
     return result
   end