Update puppetlabs/stdlib module

[mirror/dsa-puppet.git] / 3rdparty / modules / stdlib / lib / puppet / parser / functions / merge.rb

diff --git a/3rdparty/modules/stdlib/lib/puppet/parser/functions/merge.rb b/3rdparty/modules/stdlib/lib/puppet/parser/functions/merge.rb
index 1b39f20..1ca8257 100644 (file)
--- a/3rdparty/modules/stdlib/lib/puppet/parser/functions/merge.rb
+++ b/3rdparty/modules/stdlib/lib/puppet/parser/functions/merge.rb
@@ -1,5 +1,8 @@
+#
+# merge.rb
+#
 module Puppet::Parser::Functions
-  newfunction(:merge, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
+  newfunction(:merge, :type => :rvalue, :doc => <<-'DOC') do |args|
     Merges two or more hashes together and returns the resulting hash.
 
     For example:
@@ -12,17 +15,20 @@ module Puppet::Parser::Functions
 
     When there is a duplicate key, the key in the rightmost hash will "win."
 
-    ENDHEREDOC
+    Note that since Puppet 4.0.0 the same merge can be achieved with the + operator.
+
+        $merged_hash = $hash1 + $hash2
+    DOC
 
     if args.length < 2
-      raise Puppet::ParseError, ("merge(): wrong number of arguments (#{args.length}; must be at least 2)")
+      raise Puppet::ParseError, "merge(): wrong number of arguments (#{args.length}; must be at least 2)"
     end
 
     # The hash we accumulate into
-    accumulator = Hash.new
+    accumulator = {}
     # Merge into the accumulator hash
     args.each do |arg|
-      next if arg.is_a? String and arg.empty? # empty string is synonym for puppet's undef
+      next if arg.is_a?(String) && 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