1 files changed, 13 insertions, 9 deletions
diff --git a/lib/puppet/parser/functions/concat.rb b/lib/puppet/parser/functions/concat.rb
index c86aa00..618e62d 100644
--- a/lib/puppet/parser/functions/concat.rb
+++ b/lib/puppet/parser/functions/concat.rb
@@ -4,31 +4,35 @@
 
 module Puppet::Parser::Functions
   newfunction(:concat, :type => :rvalue, :doc => <<-EOS
-Appends the contents of array 2 onto array 1.
+Appends the contents of multiple arrays into array 1.
 
 *Example:*
 
-    concat(['1','2','3'],['4','5','6'])
+    concat(['1','2','3'],['4','5','6'],['7','8','9'])
 
 Would result in:
 
-  ['1','2','3','4','5','6']
+  ['1','2','3','4','5','6','7','8','9']
     EOS
   ) do |arguments|
 
-    # Check that 2 arguments have been given ...
+    # Check that more than 2 arguments have been given ...
     raise(Puppet::ParseError, "concat(): Wrong number of arguments " +
-      "given (#{arguments.size} for 2)") if arguments.size != 2
+      "given (#{arguments.size} for < 2)") if arguments.size < 2
 
     a = arguments[0]
-    b = arguments[1]
 
-    # Check that both args are arrays.
-    unless a.is_a?(Array) and b.is_a?(Array)
+    # Check that the first parameter is an array
+    unless a.is_a?(Array)
       raise(Puppet::ParseError, 'concat(): Requires array to work with')
     end
 
-    result = a.concat(b)
+    result = a
+    arguments.shift
+
+    arguments.each do |x|
+      result = result + Array(x)
+    end
 
     return result
   end