From: Martin Hellmich <mhellmic@gmail.com>
Date: Mon, 22 Apr 2013 21:26:22 +0000 (+0200)
Subject: check if an argument supposed to be merged is empty to
X-Git-Url: https://gitweb.fluxo.info/?a=commitdiff_plain;h=3077d26b00b170ef2c5c808831577d421613b198;p=puppet-stdlib.git

check if an argument supposed to be merged is empty to
pass over undefs without failing
---

diff --git a/lib/puppet/parser/functions/merge.rb b/lib/puppet/parser/functions/merge.rb
index 6ec085e..54d1c1c 100644
--- a/lib/puppet/parser/functions/merge.rb
+++ b/lib/puppet/parser/functions/merge.rb
@@ -22,6 +22,7 @@ module Puppet::Parser::Functions
     accumulator = Hash.new
     # Merge into the accumulator hash
     args.each do |arg|
+      next if arg.empty? # empty string is synonym for puppet's undef
       unless arg.is_a?(Hash)
         raise Puppet::ParseError, "merge: unexpected argument type #{arg.class}, only expects hash arguments"
       end