From 06fc40c5d755a41c8ece84a3d437572a64b4c899 Mon Sep 17 00:00:00 2001
From: Nick Lewis <nick@puppetlabs.com>
Date: Mon, 19 Jul 2010 12:32:46 -0700
Subject: [#4269] Undef variables interpolate to empty string

This fixes double-quoted strings to interpolate undef variables
as an empty string. This is the behavior present in 0.25.x.
---
 lib/puppet/parser/ast/leaf.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/puppet/parser')

diff --git a/lib/puppet/parser/ast/leaf.rb b/lib/puppet/parser/ast/leaf.rb
index db9788f50..49cde63ca 100644
--- a/lib/puppet/parser/ast/leaf.rb
+++ b/lib/puppet/parser/ast/leaf.rb
@@ -63,7 +63,7 @@ class Puppet::Parser::AST
 
   class Concat < AST::Leaf
     def evaluate(scope)
-      @value.collect { |x| x.evaluate(scope) }.join
+      @value.collect { |x| x.evaluate(scope) }.collect{ |x| x == :undef ? '' : x }.join
     end
 
     def to_s
-- 
cgit