Merge branch 'master' into leap

57 files changed, 645 insertions, 245 deletions

diff --git a/lib/puppet/functions/type_of.rb b/lib/puppet/functions/type_of.rb
new file mode 100644
index 0000000..02cdd4d
--- /dev/null
+++ b/lib/puppet/functions/type_of.rb
@@ -0,0 +1,17 @@
+# Returns the type when passed a value.
+#
+# @example how to compare values' types
+#   # compare the types of two values
+#   if type_of($first_value) != type_of($second_value) { fail("first_value and second_value are different types") }
+# @example how to compare against an abstract type
+#   unless type_of($first_value) <= Numeric { fail("first_value must be Numeric") }
+#   unless type_of{$first_value) <= Collection[1] { fail("first_value must be an Array or Hash, and contain at least one element") }
+#
+# See the documentation for "The Puppet Type System" for more information about types.
+# See the `assert_type()` function for flexible ways to assert the type of a value.
+#
+Puppet::Functions.create_function(:type_of) do
+  def type_of(value)
+    Puppet::Pops::Types::TypeCalculator.infer_set(value)
+  end
+end
diff --git a/lib/puppet/parser/functions/base64.rb b/lib/puppet/parser/functions/base64.rb
index d9a590a..617ba31 100644
--- a/lib/puppet/parser/functions/base64.rb
+++ b/lib/puppet/parser/functions/base64.rb
@@ -1,5 +1,5 @@
 module Puppet::Parser::Functions
- 
+
   newfunction(:base64, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
 
     Base64 encode or decode a string based on the command and the string submitted
@@ -10,9 +10,9 @@ module Puppet::Parser::Functions
       $decodestring = base64('decode','dGhlc3RyaW5n')
 
     ENDHEREDOC
- 
+
     require 'base64'
- 
+
     raise Puppet::ParseError, ("base64(): Wrong number of arguments (#{args.length}; must be = 2)") unless args.length == 2
 
     actions = ['encode','decode']
@@ -20,18 +20,18 @@ module Puppet::Parser::Functions
     unless actions.include?(args[0])
       raise Puppet::ParseError, ("base64(): the first argument must be one of 'encode' or 'decode'")
     end
- 
+
     unless args[1].is_a?(String)
       raise Puppet::ParseError, ("base64(): the second argument must be a string to base64")
     end
- 
+
     case args[0]
       when 'encode'
         result = Base64.encode64(args[1])
       when 'decode'
         result = Base64.decode64(args[1])
     end
- 
+
     return result
   end
 end
diff --git a/lib/puppet/parser/functions/basename.rb b/lib/puppet/parser/functions/basename.rb
new file mode 100644
index 0000000..f7e4438
--- /dev/null
+++ b/lib/puppet/parser/functions/basename.rb
@@ -0,0 +1,34 @@
+module Puppet::Parser::Functions
+  newfunction(:basename, :type => :rvalue, :doc => <<-EOS
+    Strips directory (and optional suffix) from a filename
+    EOS
+  ) do |arguments|
+
+    if arguments.size < 1 then
+      raise(Puppet::ParseError, "basename(): No arguments given")
+    elsif arguments.size > 2 then
+      raise(Puppet::ParseError, "basename(): Too many arguments given (#{arguments.size})")
+    else
+
+      unless arguments[0].is_a?(String)
+        raise(Puppet::ParseError, 'basename(): Requires string as first argument')
+      end
+
+      if arguments.size == 1 then
+        rv = File.basename(arguments[0])
+      elsif arguments.size == 2 then
+
+        unless arguments[1].is_a?(String)
+          raise(Puppet::ParseError, 'basename(): Requires string as second argument')
+        end
+
+        rv = File.basename(arguments[0], arguments[1])
+      end
+
+    end
+
+    return rv
+  end
+end
+
+# vim: set ts=2 sw=2 et :
diff --git a/lib/puppet/parser/functions/bool2num.rb b/lib/puppet/parser/functions/bool2num.rb
index 9a07a8a..6ad6cf4 100644
--- a/lib/puppet/parser/functions/bool2num.rb
+++ b/lib/puppet/parser/functions/bool2num.rb
@@ -14,30 +14,7 @@ module Puppet::Parser::Functions
     raise(Puppet::ParseError, "bool2num(): Wrong number of arguments " +
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
-    value = arguments[0]
-    klass = value.class
-
-    # We can have either true or false, or string which resembles boolean ...
-    unless [FalseClass, TrueClass, String].include?(klass)
-      raise(Puppet::ParseError, 'bool2num(): Requires either ' +
-        'boolean or string to work with')
-    end
-
-    if value.is_a?(String)
-      # We consider all the yes, no, y, n and so on too ...
-      value = case value
-        #
-        # This is how undef looks like in Puppet ...
-        # We yield 0 (or false if you wish) in this case.
-        #
-        when /^$/, '' then false # Empty string will be false ...
-        when /^(1|t|y|true|yes)$/  then true
-        when /^(0|f|n|false|no)$/  then false
-        when /^(undef|undefined)$/ then false # This is not likely to happen ...
-        else
-          raise(Puppet::ParseError, 'bool2num(): Unknown type of boolean given')
-      end
-    end
+    value = function_str2bool([arguments[0]])
 
     # We have real boolean values as well ...
     result = value ? 1 : 0
diff --git a/lib/puppet/parser/functions/bool2str.rb b/lib/puppet/parser/functions/bool2str.rb
new file mode 100644
index 0000000..fcd3791
--- /dev/null
+++ b/lib/puppet/parser/functions/bool2str.rb
@@ -0,0 +1,27 @@
+#
+# bool2str.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:bool2str, :type => :rvalue, :doc => <<-EOS
+    Converts a boolean to a string.
+    Requires a single boolean as an input.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "bool2str(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size < 1
+
+    value = arguments[0]
+    klass = value.class
+
+    # We can have either true or false, and nothing else
+    unless [FalseClass, TrueClass].include?(klass)
+      raise(Puppet::ParseError, 'bool2str(): Requires a boolean to work with')
+    end
+
+    return value.to_s
+  end
+end
+
+# vim: set ts=2 sw=2 et :
diff --git a/lib/puppet/parser/functions/camelcase.rb b/lib/puppet/parser/functions/camelcase.rb
new file mode 100644
index 0000000..d7f43f7
--- /dev/null
+++ b/lib/puppet/parser/functions/camelcase.rb
@@ -0,0 +1,33 @@
+#
+#  camelcase.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:camelcase, :type => :rvalue, :doc => <<-EOS
+Converts the case of a string or all strings in an array to camel case.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "camelcase(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size < 1
+
+    value = arguments[0]
+    klass = value.class
+
+    unless [Array, String].include?(klass)
+      raise(Puppet::ParseError, 'camelcase(): Requires either ' +
+        'array or string to work with')
+    end
+
+    if value.is_a?(Array)
+      # Numbers in Puppet are often string-encoded which is troublesome ...
+      result = value.collect { |i| i.is_a?(String) ? i.split('_').map{|e| e.capitalize}.join : i }
+    else
+      result = value.split('_').map{|e| e.capitalize}.join
+    end
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :
diff --git a/lib/puppet/parser/functions/capitalize.rb b/lib/puppet/parser/functions/capitalize.rb
index 640d00b..98b2d16 100644
--- a/lib/puppet/parser/functions/capitalize.rb
+++ b/lib/puppet/parser/functions/capitalize.rb
@@ -13,9 +13,8 @@ module Puppet::Parser::Functions
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'capitalize(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/chomp.rb b/lib/puppet/parser/functions/chomp.rb
index 4564a00..c55841e 100644
--- a/lib/puppet/parser/functions/chomp.rb
+++ b/lib/puppet/parser/functions/chomp.rb
@@ -14,9 +14,8 @@ module Puppet::Parser::Functions
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'chomp(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/chop.rb b/lib/puppet/parser/functions/chop.rb
index f242af3..b24ab78 100644
--- a/lib/puppet/parser/functions/chop.rb
+++ b/lib/puppet/parser/functions/chop.rb
@@ -16,9 +16,8 @@ module Puppet::Parser::Functions
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'chop(): Requires either an ' +
         'array or string to work with')
     end
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
diff --git a/lib/puppet/parser/functions/deep_merge.rb b/lib/puppet/parser/functions/deep_merge.rb
new file mode 100644
index 0000000..6df32e9
--- /dev/null
+++ b/lib/puppet/parser/functions/deep_merge.rb
@@ -0,0 +1,44 @@
+module Puppet::Parser::Functions
+  newfunction(:deep_merge, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
+    Recursively merges two or more hashes together and returns the resulting hash.
+
+    For example:
+
+        $hash1 = {'one' => 1, 'two' => 2, 'three' => { 'four' => 4 } }
+        $hash2 = {'two' => 'dos', 'three' => { 'five' => 5 } }
+        $merged_hash = deep_merge($hash1, $hash2)
+        # The resulting hash is equivalent to:
+        # $merged_hash = { 'one' => 1, 'two' => 'dos', 'three' => { 'four' => 4, 'five' => 5 } }
+
+    When there is a duplicate key that is a hash, they are recursively merged.
+    When there is a duplicate key that is not a hash, the key in the rightmost hash will "win."
+
+    ENDHEREDOC
+
+    if args.length < 2
+      raise Puppet::ParseError, ("deep_merge(): wrong number of arguments (#{args.length}; must be at least 2)")
+    end
+
+    deep_merge = Proc.new do |hash1,hash2|
+      hash1.merge(hash2) do |key,old_value,new_value|
+        if old_value.is_a?(Hash) && new_value.is_a?(Hash)
+          deep_merge.call(old_value, new_value)
+        else
+          new_value
+        end
+      end
+    end
+
+    result = Hash.new
+    args.each do |arg|
+      next if arg.is_a? String and arg.empty? # empty string is synonym for puppet's undef
+      # If the argument was not a hash, skip it.
+      unless arg.is_a?(Hash)
+        raise Puppet::ParseError, "deep_merge: unexpected argument type #{arg.class}, only expects hash arguments"
+      end
+
+      result = deep_merge.call(result, arg)
+    end
+    return( result )
+  end
+end
diff --git a/lib/puppet/parser/functions/delete.rb b/lib/puppet/parser/functions/delete.rb
index f814344..f548b44 100644
--- a/lib/puppet/parser/functions/delete.rb
+++ b/lib/puppet/parser/functions/delete.rb
@@ -17,27 +17,30 @@ string, or key from a hash.
     delete({'a'=>1,'b'=>2,'c'=>3}, 'b')
     Would return: {'a'=>1,'c'=>3}
 
+    delete({'a'=>1,'b'=>2,'c'=>3}, ['b','c'])
+    Would return: {'a'=>1}
+
     delete('abracadabra', 'bra')
     Would return: 'acada'
-    EOS
+  EOS
   ) do |arguments|
 
     if (arguments.size != 2) then
       raise(Puppet::ParseError, "delete(): Wrong number of arguments "+
-        "given #{arguments.size} for 2.")
+                                  "given #{arguments.size} for 2.")
     end
 
-    collection = arguments[0]
-    item = arguments[1]
-
-    case collection
-    when Array, Hash
-      collection.delete item
-    when String
-      collection.gsub! item, ''
-    else
-      raise(TypeError, "delete(): First argument must be an Array, " +
-            "String, or Hash. Given an argument of class #{collection.class}.")
+    collection = arguments[0].dup
+    Array(arguments[1]).each do |item|
+      case collection
+        when Array, Hash
+          collection.delete item
+        when String
+          collection.gsub! item, ''
+        else
+          raise(TypeError, "delete(): First argument must be an Array, " +
+                             "String, or Hash. Given an argument of class #{collection.class}.")
+      end
     end
     collection
   end
diff --git a/lib/puppet/parser/functions/delete_undef_values.rb b/lib/puppet/parser/functions/delete_undef_values.rb
index 4eecab2..f94d4da 100644
--- a/lib/puppet/parser/functions/delete_undef_values.rb
+++ b/lib/puppet/parser/functions/delete_undef_values.rb
@@ -3,7 +3,7 @@ module Puppet::Parser::Functions
 Returns a copy of input hash or array with all undefs deleted.
 
 *Examples:*
-    
+
     $hash = delete_undef_values({a=>'A', b=>'', c=>undef, d => false})
 
 Would return: {a => 'A', b => '', d => false}
@@ -11,7 +11,7 @@ Would return: {a => 'A', b => '', d => false}
     $array = delete_undef_values(['A','',undef,false])
 
 Would return: ['A','',false]
-    
+
       EOS
     ) do |args|
 
@@ -19,15 +19,15 @@ Would return: ['A','',false]
           "delete_undef_values(): Wrong number of arguments given " +
           "(#{args.size})") if args.size < 1
 
-    result = args[0]
+    unless args[0].is_a? Array or args[0].is_a? Hash
+      raise(Puppet::ParseError,
+            "delete_undef_values(): expected an array or hash, got #{args[0]} type  #{args[0].class} ")
+    end
+    result = args[0].dup
     if result.is_a?(Hash)
       result.delete_if {|key, val| val.equal? :undef}
     elsif result.is_a?(Array)
       result.delete :undef
-    else
-      raise(Puppet::ParseError, 
-            "delete_undef_values(): Wrong argument type #{args[0].class} " +
-            "for first argument")
     end
     result
   end
diff --git a/lib/puppet/parser/functions/delete_values.rb b/lib/puppet/parser/functions/delete_values.rb
index 17b9d37..f6c8c0e 100644
--- a/lib/puppet/parser/functions/delete_values.rb
+++ b/lib/puppet/parser/functions/delete_values.rb
@@ -19,8 +19,8 @@ Would return: {'a'=>'A','c'=>'C','B'=>'D'}
 
     if not hash.is_a?(Hash)
       raise(TypeError, "delete_values(): First argument must be a Hash. " + \
-                       "Given an argument of class #{hash.class}.") 
+                       "Given an argument of class #{hash.class}.")
     end
-    hash.delete_if { |key, val| item == val }
+    hash.dup.delete_if { |key, val| item == val }
   end
 end
diff --git a/lib/puppet/parser/functions/downcase.rb b/lib/puppet/parser/functions/downcase.rb
index 4066d21..040b84f 100644
--- a/lib/puppet/parser/functions/downcase.rb
+++ b/lib/puppet/parser/functions/downcase.rb
@@ -12,9 +12,8 @@ Converts the case of a string or all strings in an array to lower case.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'downcase(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/empty.rb b/lib/puppet/parser/functions/empty.rb
index 80ebb86..cca620f 100644
--- a/lib/puppet/parser/functions/empty.rb
+++ b/lib/puppet/parser/functions/empty.rb
@@ -12,9 +12,8 @@ Returns true if the variable is empty.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, Hash, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String)
       raise(Puppet::ParseError, 'empty(): Requires either ' +
         'array, hash or string to work with')
     end
diff --git a/lib/puppet/parser/functions/ensure_packages.rb b/lib/puppet/parser/functions/ensure_packages.rb
index 450ea02..f1da4aa 100644
--- a/lib/puppet/parser/functions/ensure_packages.rb
+++ b/lib/puppet/parser/functions/ensure_packages.rb
@@ -1,22 +1,33 @@
 #
 # ensure_packages.rb
 #
-require 'puppet/parser/functions'
 
 module Puppet::Parser::Functions
   newfunction(:ensure_packages, :type => :statement, :doc => <<-EOS
 Takes a list of packages and only installs them if they don't already exist.
+It optionally takes a hash as a second parameter that will be passed as the
+third argument to the ensure_resource() function.
     EOS
   ) do |arguments|
 
-    raise(Puppet::ParseError, "ensure_packages(): Wrong number of arguments " +
-      "given (#{arguments.size} for 1)") if arguments.size != 1
-    raise(Puppet::ParseError, "ensure_packages(): Requires array " +
-      "given (#{arguments[0].class})") if !arguments[0].kind_of?(Array)
+    if arguments.size > 2 or arguments.size == 0
+      raise(Puppet::ParseError, "ensure_packages(): Wrong number of arguments " +
+        "given (#{arguments.size} for 1 or 2)")
+    elsif arguments.size == 2 and !arguments[1].is_a?(Hash) 
+      raise(Puppet::ParseError, 'ensure_packages(): Requires second argument to be a Hash')
+    end
+
+    packages = Array(arguments[0])
+
+    if arguments[1]
+      defaults = { 'ensure' => 'present' }.merge(arguments[1])
+    else
+      defaults = { 'ensure' => 'present' }
+    end
 
     Puppet::Parser::Functions.function(:ensure_resource)
-    arguments[0].each { |package_name|
-      function_ensure_resource(['package', package_name, {'ensure' => 'present' } ])
+    packages.each { |package_name|
+      function_ensure_resource(['package', package_name, defaults ])
     }
   end
 end
diff --git a/lib/puppet/parser/functions/ensure_resource.rb b/lib/puppet/parser/functions/ensure_resource.rb
index 05e5593..1ba6a44 100644
--- a/lib/puppet/parser/functions/ensure_resource.rb
+++ b/lib/puppet/parser/functions/ensure_resource.rb
@@ -36,8 +36,9 @@ ENDOFDOC
   items.each do |item|
     Puppet::Parser::Functions.function(:defined_with_params)
     if function_defined_with_params(["#{type}[#{item}]", params])
-      Puppet.debug("Resource #{type}[#{item}] not created because it already exists")
+      Puppet.debug("Resource #{type}[#{item}] with params #{params} not created because it already exists")
     else
+      Puppet.debug("Create new resource #{type}[#{item}] with params #{params}")
       Puppet::Parser::Functions.function(:create_resources)
       function_create_resources([type.capitalize, { item => params }])
     end
diff --git a/lib/puppet/parser/functions/floor.rb b/lib/puppet/parser/functions/floor.rb
index a401923..9a6f014 100644
--- a/lib/puppet/parser/functions/floor.rb
+++ b/lib/puppet/parser/functions/floor.rb
@@ -8,7 +8,12 @@ module Puppet::Parser::Functions
     raise(Puppet::ParseError, "floor(): Wrong number of arguments " +
           "given (#{arguments.size} for 1)") if arguments.size != 1
 
-    arg = arguments[0]
+    begin
+      arg = Float(arguments[0])
+    rescue TypeError, ArgumentError => e
+      raise(Puppet::ParseError, "floor(): Wrong argument type " +
+            "given (#{arguments[0]} for Numeric)")
+    end
 
     raise(Puppet::ParseError, "floor(): Wrong argument type " +
           "given (#{arg.class} for Numeric)") if arg.is_a?(Numeric) == false
diff --git a/lib/puppet/parser/functions/fqdn_rotate.rb b/lib/puppet/parser/functions/fqdn_rotate.rb
index 6558206..7f4d37d 100644
--- a/lib/puppet/parser/functions/fqdn_rotate.rb
+++ b/lib/puppet/parser/functions/fqdn_rotate.rb
@@ -12,10 +12,9 @@ Rotates an array a random number of times based on a nodes fqdn.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
     require 'digest/md5'
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'fqdn_rotate(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/getvar.rb b/lib/puppet/parser/functions/getvar.rb
index 1621149..fb336b6 100644
--- a/lib/puppet/parser/functions/getvar.rb
+++ b/lib/puppet/parser/functions/getvar.rb
@@ -19,7 +19,10 @@ module Puppet::Parser::Functions
       raise Puppet::ParseError, ("getvar(): wrong number of arguments (#{args.length}; must be 1)")
     end
 
-    self.lookupvar("#{args[0]}")
+    begin
+      self.lookupvar("#{args[0]}")
+    rescue Puppet::ParseError # Eat the exception if strict_variables = true is set
+    end
 
   end
 
diff --git a/lib/puppet/parser/functions/has_interface_with.rb b/lib/puppet/parser/functions/has_interface_with.rb
index 7f150a7..3691524 100644
--- a/lib/puppet/parser/functions/has_interface_with.rb
+++ b/lib/puppet/parser/functions/has_interface_with.rb
@@ -25,7 +25,7 @@ has_interface_with("lo")                        => true
     interfaces = lookupvar('interfaces')
 
     # If we do not have any interfaces, then there are no requested attributes
-    return false if (interfaces == :undefined)
+    return false if (interfaces == :undefined || interfaces.nil?)
 
     interfaces = interfaces.split(',')
 
@@ -35,13 +35,29 @@ has_interface_with("lo")                        => true
 
     kind, value = args
 
-    if lookupvar(kind) == value
+    # Bug with 3.7.1 - 3.7.3  when using future parser throws :undefined_variable
+    # https://tickets.puppetlabs.com/browse/PUP-3597
+    factval = nil
+    catch :undefined_variable do
+      factval = lookupvar(kind)
+    end
+    if factval == value
       return true
     end
 
     result = false
     interfaces.each do |iface|
-      if value == lookupvar("#{kind}_#{iface}")
+      iface.downcase!
+      factval = nil
+      begin
+        # Bug with 3.7.1 - 3.7.3 when using future parser throws :undefined_variable
+        # https://tickets.puppetlabs.com/browse/PUP-3597
+        catch :undefined_variable do
+          factval = lookupvar("#{kind}_#{iface}")
+        end
+      rescue Puppet::ParseError # Eat the exception if strict_variables = true is set
+      end
+      if value == factval
         result = true
         break
       end
diff --git a/lib/puppet/parser/functions/is_bool.rb b/lib/puppet/parser/functions/is_bool.rb
new file mode 100644
index 0000000..8bbdbc8
--- /dev/null
+++ b/lib/puppet/parser/functions/is_bool.rb
@@ -0,0 +1,22 @@
+#
+# is_bool.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:is_bool, :type => :rvalue, :doc => <<-EOS
+Returns true if the variable passed to this function is a boolean.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "is_bool(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size != 1
+
+    type = arguments[0]
+
+    result = type.is_a?(TrueClass) || type.is_a?(FalseClass)
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :
diff --git a/lib/puppet/parser/functions/is_domain_name.rb b/lib/puppet/parser/functions/is_domain_name.rb
index 5826dc0..b3fee96 100644
--- a/lib/puppet/parser/functions/is_domain_name.rb
+++ b/lib/puppet/parser/functions/is_domain_name.rb
@@ -20,6 +20,9 @@ Returns true if the string passed to this function is a syntactically correct do
     label_min_length=1
     label_max_length=63
 
+    # Only allow string types
+    return false unless domain.is_a?(String)
+
     # Allow ".", it is the top level domain
     return true if domain == '.'
 
diff --git a/lib/puppet/parser/functions/is_float.rb b/lib/puppet/parser/functions/is_float.rb
index 911f3c2..a2da943 100644
--- a/lib/puppet/parser/functions/is_float.rb
+++ b/lib/puppet/parser/functions/is_float.rb
@@ -15,6 +15,9 @@ Returns true if the variable passed to this function is a float.
 
     value = arguments[0]
 
+    # Only allow Numeric or String types
+    return false unless value.is_a?(Numeric) or value.is_a?(String)
+
     if value != value.to_f.to_s and !value.is_a? Float then
       return false
     else
diff --git a/lib/puppet/parser/functions/is_function_available.rb b/lib/puppet/parser/functions/is_function_available.rb
index 6cbd35c..6da82c8 100644
--- a/lib/puppet/parser/functions/is_function_available.rb
+++ b/lib/puppet/parser/functions/is_function_available.rb
@@ -15,6 +15,9 @@ true if the function exists, false if not.
         "given #{arguments.size} for 1")
     end
 
+    # Only allow String types
+    return false unless arguments[0].is_a?(String)
+
     function = Puppet::Parser::Functions.function(arguments[0].to_sym)
     function.is_a?(String) and not function.empty?
   end
diff --git a/lib/puppet/parser/functions/is_integer.rb b/lib/puppet/parser/functions/is_integer.rb
index 6b29e98..c03d28d 100644
--- a/lib/puppet/parser/functions/is_integer.rb
+++ b/lib/puppet/parser/functions/is_integer.rb
@@ -4,7 +4,12 @@
 
 module Puppet::Parser::Functions
   newfunction(:is_integer, :type => :rvalue, :doc => <<-EOS
-Returns true if the variable returned to this string is an integer.
+Returns true if the variable passed to this function is an Integer or
+a decimal (base 10) integer in String form. The string may
+start with a '-' (minus). A value of '0' is allowed, but a leading '0' digit may not
+be followed by other digits as this indicates that the value is octal (base 8).
+
+If given any other argument `false` is returned.
     EOS
   ) do |arguments|
 
@@ -15,12 +20,25 @@ Returns true if the variable returned to this string is an integer.
 
     value = arguments[0]
 
-    if value != value.to_i.to_s and !value.is_a? Fixnum then
-      return false
-    else
+    # Regex is taken from the lexer of puppet
+    # puppet/pops/parser/lexer.rb but modified to match also
+    # negative values and disallow numbers prefixed with multiple
+    # 0's
+    #
+    # TODO these parameter should be a constant but I'm not sure
+    # if there is no risk to declare it inside of the module
+    # Puppet::Parser::Functions
+
+    # Integer numbers like
+    # -1234568981273
+    # 47291
+    numeric = %r{^-?(?:(?:[1-9]\d*)|0)$}
+
+    if value.is_a? Integer or (value.is_a? String and value.match numeric)
       return true
+    else
+      return false
     end
-
   end
 end
 
diff --git a/lib/puppet/parser/functions/is_numeric.rb b/lib/puppet/parser/functions/is_numeric.rb
index abf0321..e7e1d2a 100644
--- a/lib/puppet/parser/functions/is_numeric.rb
+++ b/lib/puppet/parser/functions/is_numeric.rb
@@ -4,7 +4,23 @@
 
 module Puppet::Parser::Functions
   newfunction(:is_numeric, :type => :rvalue, :doc => <<-EOS
-Returns true if the variable passed to this function is a number.
+Returns true if the given argument is a Numeric (Integer or Float),
+or a String containing either a valid integer in decimal base 10 form, or
+a valid floating point string representation.
+
+The function recognizes only decimal (base 10) integers and float but not
+integers in hex (base 16) or octal (base 8) form.
+
+The string representation may start with a '-' (minus). If a decimal '.' is used,
+it must be followed by at least one digit.
+
+Valid examples:
+
+  77435
+  10e-12
+  -8475
+  0.2343
+  -23.561e3
     EOS
   ) do |arguments|
 
@@ -15,12 +31,44 @@ Returns true if the variable passed to this function is a number.
 
     value = arguments[0]
 
-    if value == value.to_f.to_s or value == value.to_i.to_s or value.is_a? Numeric then
+    # Regex is taken from the lexer of puppet
+    # puppet/pops/parser/lexer.rb but modified to match also
+    # negative values and disallow invalid octal numbers or
+    # numbers prefixed with multiple 0's (except in hex numbers)
+    #
+    # TODO these parameters should be constants but I'm not sure
+    # if there is no risk to declare them inside of the module
+    # Puppet::Parser::Functions
+
+    # TODO decide if this should be used
+    # HEX numbers like
+    # 0xaa230F
+    # 0X1234009C
+    # 0x0012
+    # -12FcD
+    #numeric_hex = %r{^-?0[xX][0-9A-Fa-f]+$}
+
+    # TODO decide if this should be used
+    # OCTAL numbers like
+    # 01234567
+    # -045372
+    #numeric_oct = %r{^-?0[1-7][0-7]*$}
+
+    # Integer/Float numbers like
+    # -0.1234568981273
+    # 47291
+    # 42.12345e-12
+    numeric = %r{^-?(?:(?:[1-9]\d*)|0)(?:\.\d+)?(?:[eE]-?\d+)?$}
+
+    if value.is_a? Numeric or (value.is_a? String and (
+      value.match(numeric) #or
+    #  value.match(numeric_hex) or
+    #  value.match(numeric_oct)
+    ))
       return true
     else
       return false
     end
-
   end
 end
 
diff --git a/lib/puppet/parser/functions/join.rb b/lib/puppet/parser/functions/join.rb
index 005a46e..6c0a6ba 100644
--- a/lib/puppet/parser/functions/join.rb
+++ b/lib/puppet/parser/functions/join.rb
@@ -4,7 +4,7 @@
 
 module Puppet::Parser::Functions
   newfunction(:join, :type => :rvalue, :doc => <<-EOS
-This function joins an array into a string using a seperator.
+This function joins an array into a string using a separator.
 
 *Examples:*
 
diff --git a/lib/puppet/parser/functions/lstrip.rb b/lib/puppet/parser/functions/lstrip.rb
index 3a64de3..624e4c8 100644
--- a/lib/puppet/parser/functions/lstrip.rb
+++ b/lib/puppet/parser/functions/lstrip.rb
@@ -12,9 +12,8 @@ Strips leading spaces to the left of a string.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'lstrip(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/member.rb b/lib/puppet/parser/functions/member.rb
index 43d76af..88609ce 100644
--- a/lib/puppet/parser/functions/member.rb
+++ b/lib/puppet/parser/functions/member.rb
@@ -8,6 +8,7 @@
 module Puppet::Parser::Functions
   newfunction(:member, :type => :rvalue, :doc => <<-EOS
 This function determines if a variable is a member of an array.
+The variable can be a string, fixnum, or array.
 
 *Examples:*
 
@@ -15,9 +16,17 @@ This function determines if a variable is a member of an array.
 
 Would return: true
 
+    member(['a', 'b', 'c'], ['a', 'b'])
+
+would return: true
+
     member(['a','b'], 'c')
 
 Would return: false
+
+    member(['a', 'b', 'c'], ['d', 'b'])
+
+would return: false
     EOS
   ) do |arguments|
 
@@ -30,12 +39,21 @@ Would return: false
       raise(Puppet::ParseError, 'member(): Requires array to work with')
     end
 
-    item = arguments[1]
+    unless arguments[1].is_a? String or arguments[1].is_a? Fixnum or arguments[1].is_a? Array
+      raise(Puppet::ParseError, 'member(): Item to search for must be a string, fixnum, or array')
+    end
+
+    if arguments[1].is_a? String or arguments[1].is_a? Fixnum
+      item = Array(arguments[1])
+    else
+      item = arguments[1]
+    end
+
 
     raise(Puppet::ParseError, 'member(): You must provide item ' +
-      'to search for within array given') if item.empty?
+      'to search for within array given') if item.respond_to?('empty?') && item.empty?
 
-    result = array.include?(item)
+    result = (item - array).empty?
 
     return result
   end
diff --git a/lib/puppet/parser/functions/pick.rb b/lib/puppet/parser/functions/pick.rb
index cbc0300..fdd0aef 100644
--- a/lib/puppet/parser/functions/pick.rb
+++ b/lib/puppet/parser/functions/pick.rb
@@ -21,7 +21,7 @@ EOS
    args.delete(:undefined)
    args.delete("")
    if args[0].to_s.empty? then
-     fail "Must provide non empty value."
+     fail Puppet::ParseError, "pick(): must receive at least one non empty value"
    else
      return args[0]
    end
diff --git a/lib/puppet/parser/functions/pick_default.rb b/lib/puppet/parser/functions/pick_default.rb
new file mode 100644
index 0000000..36e33ab
--- /dev/null
+++ b/lib/puppet/parser/functions/pick_default.rb
@@ -0,0 +1,35 @@
+module Puppet::Parser::Functions
+ newfunction(:pick_default, :type => :rvalue, :doc => <<-EOS
+
+This function is similar to a coalesce function in SQL in that it will return
+the first value in a list of values that is not undefined or an empty string
+(two things in Puppet that will return a boolean false value). If no value is
+found, it will return the last argument.
+
+Typically, this function is used to check for a value in the Puppet
+Dashboard/Enterprise Console, and failover to a default value like the
+following:
+
+  $real_jenkins_version = pick_default($::jenkins_version, '1.449')
+
+The value of $real_jenkins_version will first look for a top-scope variable
+called 'jenkins_version' (note that parameters set in the Puppet Dashboard/
+Enterprise Console are brought into Puppet as top-scope variables), and,
+failing that, will use a default value of 1.449.
+
+Note that, contrary to the pick() function, the pick_default does not fail if
+all arguments are empty. This allows pick_default to use an empty value as
+default.
+
+EOS
+) do |args|
+   fail "Must receive at least one argument." if args.empty?
+   default = args.last
+   args = args[0..-2].compact
+   args.delete(:undef)
+   args.delete(:undefined)
+   args.delete("")
+   args << default
+   return args[0]
+ end
+end
diff --git a/lib/puppet/parser/functions/prefix.rb b/lib/puppet/parser/functions/prefix.rb
index 62211ae..d02286a 100644
--- a/lib/puppet/parser/functions/prefix.rb
+++ b/lib/puppet/parser/functions/prefix.rb
@@ -28,7 +28,7 @@ Will return: ['pa','pb','pc']
 
     if prefix
       unless prefix.is_a?(String)
-        raise Puppet::ParseError, "prefix(): expected second argument to be a String, got #{suffix.inspect}"
+        raise Puppet::ParseError, "prefix(): expected second argument to be a String, got #{prefix.inspect}"
       end
     end
 
diff --git a/lib/puppet/parser/functions/private.rb b/lib/puppet/parser/functions/private.rb
new file mode 100644
index 0000000..60210d3
--- /dev/null
+++ b/lib/puppet/parser/functions/private.rb
@@ -0,0 +1,29 @@
+#
+# private.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:private, :doc => <<-'EOS'
+    Sets the current class or definition as private.
+    Calling the class or definition from outside the current module will fail.
+    EOS
+  ) do |args|
+
+    raise(Puppet::ParseError, "private(): Wrong number of arguments "+
+      "given (#{args.size}}) for 0 or 1)") if args.size > 1
+
+    scope = self
+    if scope.lookupvar('module_name') != scope.lookupvar('caller_module_name')
+      message = nil
+      if args[0] and args[0].is_a? String
+        message = args[0]
+      else
+        manifest_name = scope.source.name
+        manifest_type = scope.source.type
+        message = (manifest_type.to_s == 'hostclass') ? 'Class' : 'Definition'
+        message += " #{manifest_name} is private"
+      end
+      raise(Puppet::ParseError, message)
+    end
+  end
+end
diff --git a/lib/puppet/parser/functions/range.rb b/lib/puppet/parser/functions/range.rb
index 0849491..49fba21 100644
--- a/lib/puppet/parser/functions/range.rb
+++ b/lib/puppet/parser/functions/range.rb
@@ -28,7 +28,7 @@ Will return: ["a","b","c"]
 
 Will return: ["host01", "host02", ..., "host09", "host10"]
 
-Passing a third argument will cause the generated range to step by that 
+Passing a third argument will cause the generated range to step by that
 interval, e.g.
 
     range("0", "9", "2")
@@ -65,21 +65,21 @@ Will return: [0,2,4,6,8]
       end
     end
 
-      # Check whether we have integer value if so then make it so ...
-      if start.match(/^\d+$/)
-        start = start.to_i
-        stop  = stop.to_i
-      else
-        start = start.to_s
-        stop  = stop.to_s
-      end
+    # Check whether we have integer value if so then make it so ...
+    if start.to_s.match(/^\d+$/)
+      start = start.to_i
+      stop  = stop.to_i
+    else
+      start = start.to_s
+      stop  = stop.to_s
+    end
 
-      range = case type
-        when /^(\.\.|\-)$/ then (start .. stop)
-        when /^(\.\.\.)$/  then (start ... stop) # Exclusive of last element ...
-      end
+    range = case type
+      when /^(\.\.|\-)$/ then (start .. stop)
+      when /^(\.\.\.)$/  then (start ... stop) # Exclusive of last element ...
+    end
 
-      result = range.step(step).collect { |i| i } # Get them all ... Pokemon ...
+    result = range.step(step).collect { |i| i } # Get them all ... Pokemon ...
 
     return result
   end
diff --git a/lib/puppet/parser/functions/reverse.rb b/lib/puppet/parser/functions/reverse.rb
index fe04869..7f1018f 100644
--- a/lib/puppet/parser/functions/reverse.rb
+++ b/lib/puppet/parser/functions/reverse.rb
@@ -12,9 +12,8 @@ Reverses the order of a string or array.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'reverse(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/rstrip.rb b/lib/puppet/parser/functions/rstrip.rb
index 29b0998..0cf8d22 100644
--- a/lib/puppet/parser/functions/rstrip.rb
+++ b/lib/puppet/parser/functions/rstrip.rb
@@ -12,9 +12,8 @@ Strips leading spaces to the right of the string.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'rstrip(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/shuffle.rb b/lib/puppet/parser/functions/shuffle.rb
index 18134ab..30c663d 100644
--- a/lib/puppet/parser/functions/shuffle.rb
+++ b/lib/puppet/parser/functions/shuffle.rb
@@ -12,9 +12,8 @@ Randomizes the order of a string or array elements.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'shuffle(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/str2bool.rb b/lib/puppet/parser/functions/str2bool.rb
index fece7a6..446732e 100644
--- a/lib/puppet/parser/functions/str2bool.rb
+++ b/lib/puppet/parser/functions/str2bool.rb
@@ -14,7 +14,7 @@ like: 0, f, n, false, no to 'false'.
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     string = arguments[0]
-    
+
     # If string is already Boolean, return it
     if !!string == string
       return string
diff --git a/lib/puppet/parser/functions/strip.rb b/lib/puppet/parser/functions/strip.rb
index 5f4630d..3fac47d 100644
--- a/lib/puppet/parser/functions/strip.rb
+++ b/lib/puppet/parser/functions/strip.rb
@@ -19,9 +19,8 @@ Would result in: "aaa"
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'strip(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/swapcase.rb b/lib/puppet/parser/functions/swapcase.rb
index b9e6632..eb7fe13 100644
--- a/lib/puppet/parser/functions/swapcase.rb
+++ b/lib/puppet/parser/functions/swapcase.rb
@@ -18,9 +18,8 @@ Would result in: "AbCd"
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'swapcase(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/to_bytes.rb b/lib/puppet/parser/functions/to_bytes.rb
index 8ff73d1..df490ea 100644
--- a/lib/puppet/parser/functions/to_bytes.rb
+++ b/lib/puppet/parser/functions/to_bytes.rb
@@ -2,6 +2,8 @@ module Puppet::Parser::Functions
   newfunction(:to_bytes, :type => :rvalue, :doc => <<-EOS
     Converts the argument into bytes, for example 4 kB becomes 4096.
     Takes a single string value as an argument.
+    These conversions reflect a layperson's understanding of
+    1 MB = 1024 KB, when in fact 1 MB = 1000 KB, and 1 MiB = 1024 KiB.
     EOS
   ) do |arguments|
 
@@ -21,7 +23,8 @@ module Puppet::Parser::Functions
     when 'M' then return (value*(1<<20)).to_i
     when 'G' then return (value*(1<<30)).to_i
     when 'T' then return (value*(1<<40)).to_i
-    when 'E' then return (value*(1<<50)).to_i
+    when 'P' then return (value*(1<<50)).to_i
+    when 'E' then return (value*(1<<60)).to_i
     else raise Puppet::ParseError, "to_bytes(): Unknown prefix #{prefix}"
     end
   end
diff --git a/lib/puppet/parser/functions/type.rb b/lib/puppet/parser/functions/type.rb
index 8d85f11..016529b 100644
--- a/lib/puppet/parser/functions/type.rb
+++ b/lib/puppet/parser/functions/type.rb
@@ -4,46 +4,15 @@
 
 module Puppet::Parser::Functions
   newfunction(:type, :type => :rvalue, :doc => <<-EOS
-Returns the type when passed a variable. Type can be one of:
-
-* string
-* array
-* hash
-* float
-* integer
-* boolean
+  DEPRECATED: This function will cease to function on Puppet 4; please use type3x() before upgrading to puppet 4 for backwards-compatibility, or migrate to the new parser's typing system.
     EOS
-  ) do |arguments|
-
-    raise(Puppet::ParseError, "type(): Wrong number of arguments " +
-      "given (#{arguments.size} for 1)") if arguments.size < 1
-
-    value = arguments[0]
-
-    klass = value.class
-
-    if not [TrueClass, FalseClass, Array, Bignum, Fixnum, Float, Hash, String].include?(klass)
-      raise(Puppet::ParseError, 'type(): Unknown type')
-    end
-
-    klass = klass.to_s # Ugly ...
+  ) do |args|
 
-    # We note that Integer is the parent to Bignum and Fixnum ...
-    result = case klass
-      when /^(?:Big|Fix)num$/ then 'integer'
-      when /^(?:True|False)Class$/ then 'boolean'
-      else klass
+    warning("type() DEPRECATED: This function will cease to function on Puppet 4; please use type3x() before upgrading to puppet 4 for backwards-compatibility, or migrate to the new parser's typing system.")
+    if ! Puppet::Parser::Functions.autoloader.loaded?(:type3x)
+      Puppet::Parser::Functions.autoloader.load(:type3x)
     end
-
-    if result == "String" then
-      if value == value.to_i.to_s then
-        result = "Integer"
-      elsif value == value.to_f.to_s then
-        result = "Float"
-      end
-    end
-
-    return result.downcase
+    function_type3x(args + [false])
   end
 end
 
diff --git a/lib/puppet/parser/functions/type3x.rb b/lib/puppet/parser/functions/type3x.rb
new file mode 100644
index 0000000..0800b4a
--- /dev/null
+++ b/lib/puppet/parser/functions/type3x.rb
@@ -0,0 +1,51 @@
+#
+# type3x.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:type3x, :type => :rvalue, :doc => <<-EOS
+DEPRECATED: This function will be removed when puppet 3 support is dropped; please migrate to the new parser's typing system.
+
+Returns the type when passed a value. Type can be one of:
+
+* string
+* array
+* hash
+* float
+* integer
+* boolean
+    EOS
+  ) do |args|
+    raise(Puppet::ParseError, "type3x(): Wrong number of arguments " +
+      "given (#{args.size} for 1)") if args.size < 1
+
+    value = args[0]
+
+    klass = value.class
+
+    if not [TrueClass, FalseClass, Array, Bignum, Fixnum, Float, Hash, String].include?(klass)
+      raise(Puppet::ParseError, 'type3x(): Unknown type')
+    end
+
+    klass = klass.to_s # Ugly ...
+
+    # We note that Integer is the parent to Bignum and Fixnum ...
+    result = case klass
+      when /^(?:Big|Fix)num$/ then 'integer'
+      when /^(?:True|False)Class$/ then 'boolean'
+      else klass
+    end
+
+    if result == "String" then
+      if value == value.to_i.to_s then
+        result = "Integer"
+      elsif value == value.to_f.to_s then
+        result = "Float"
+      end
+    end
+
+    return result.downcase
+  end
+end
+
+# vim: set ts=2 sw=2 et :
diff --git a/lib/puppet/parser/functions/unique.rb b/lib/puppet/parser/functions/unique.rb
index 8844a74..cf770f3 100644
--- a/lib/puppet/parser/functions/unique.rb
+++ b/lib/puppet/parser/functions/unique.rb
@@ -28,9 +28,8 @@ This returns:
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'unique(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/upcase.rb b/lib/puppet/parser/functions/upcase.rb
index fe6cadc..4302b29 100644
--- a/lib/puppet/parser/functions/upcase.rb
+++ b/lib/puppet/parser/functions/upcase.rb
@@ -20,9 +20,8 @@ Will return:
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'upcase(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/uriescape.rb b/lib/puppet/parser/functions/uriescape.rb
index 0d81de5..a486eee 100644
--- a/lib/puppet/parser/functions/uriescape.rb
+++ b/lib/puppet/parser/functions/uriescape.rb
@@ -14,9 +14,8 @@ module Puppet::Parser::Functions
       "given (#{arguments.size} for 1)") if arguments.size < 1
 
     value = arguments[0]
-    klass = value.class
 
-    unless [Array, String].include?(klass)
+    unless value.is_a?(Array) || value.is_a?(String)
       raise(Puppet::ParseError, 'uriescape(): Requires either ' +
         'array or string to work with')
     end
diff --git a/lib/puppet/parser/functions/validate_absolute_path.rb b/lib/puppet/parser/functions/validate_absolute_path.rb
index fe27974..b696680 100644
--- a/lib/puppet/parser/functions/validate_absolute_path.rb
+++ b/lib/puppet/parser/functions/validate_absolute_path.rb
@@ -5,15 +5,20 @@ module Puppet::Parser::Functions
 
     The following values will pass:
 
-        $my_path = "C:/Program Files (x86)/Puppet Labs/Puppet"
+        $my_path = 'C:/Program Files (x86)/Puppet Labs/Puppet'
         validate_absolute_path($my_path)
-        $my_path2 = "/var/lib/puppet"
+        $my_path2 = '/var/lib/puppet'
         validate_absolute_path($my_path2)
-
+        $my_path3 = ['C:/Program Files (x86)/Puppet Labs/Puppet','C:/Program Files/Puppet Labs/Puppet']
+        validate_absolute_path($my_path3)
+        $my_path4 = ['/var/lib/puppet','/usr/share/puppet']
+        validate_absolute_path($my_path4)
 
     The following values will fail, causing compilation to abort:
 
         validate_absolute_path(true)
+        validate_absolute_path('../var/lib/puppet')
+        validate_absolute_path('var/lib/puppet')
         validate_absolute_path([ 'var/lib/puppet', '/var/foo' ])
         validate_absolute_path([ '/var/lib/puppet', 'var/foo' ])
         $undefined = undef
@@ -28,28 +33,36 @@ module Puppet::Parser::Functions
     end
 
     args.each do |arg|
-      # This logic was borrowed from
-      # [lib/puppet/file_serving/base.rb](https://github.com/puppetlabs/puppet/blob/master/lib/puppet/file_serving/base.rb)
-
-      # Puppet 2.7 and beyond will have Puppet::Util.absolute_path?  Fall back to a back-ported implementation otherwise.
-      if Puppet::Util.respond_to?(:absolute_path?) then
-        unless Puppet::Util.absolute_path?(arg, :posix) or Puppet::Util.absolute_path?(arg, :windows)
-          raise Puppet::ParseError, ("#{arg.inspect} is not an absolute path.")
+      # put arg to candidate var to be able to replace it
+      candidates = arg
+      # if arg is just a string with a path to test, convert it to an array
+      # to avoid test code duplication
+      unless arg.is_a?(Array) then
+        candidates = Array.new(1,arg)
+      end
+      # iterate over all pathes within the candidates array
+      candidates.each do |path|
+        # This logic was borrowed from
+        # [lib/puppet/file_serving/base.rb](https://github.com/puppetlabs/puppet/blob/master/lib/puppet/file_serving/base.rb)
+        # Puppet 2.7 and beyond will have Puppet::Util.absolute_path? Fall back to a back-ported implementation otherwise.
+        if Puppet::Util.respond_to?(:absolute_path?) then
+          unless Puppet::Util.absolute_path?(path, :posix) or Puppet::Util.absolute_path?(path, :windows)
+            raise Puppet::ParseError, ("#{path.inspect} is not an absolute path.")
+          end
+        else
+          # This code back-ported from 2.7.x's lib/puppet/util.rb Puppet::Util.absolute_path?
+          # Determine in a platform-specific way whether a path is absolute. This
+          # defaults to the local platform if none is specified.
+          # Escape once for the string literal, and once for the regex.
+          slash = '[\\\\/]'
+          name = '[^\\\\/]+'
+          regexes = {
+            :windows => %r!^(([A-Z]:#{slash})|(#{slash}#{slash}#{name}#{slash}#{name})|(#{slash}#{slash}\?#{slash}#{name}))!i,
+            :posix => %r!^/!,
+          }
+          rval = (!!(path =~ regexes[:posix])) || (!!(path =~ regexes[:windows]))
+          rval or raise Puppet::ParseError, ("#{path.inspect} is not an absolute path.")
         end
-      else
-        # This code back-ported from 2.7.x's lib/puppet/util.rb Puppet::Util.absolute_path?
-        # Determine in a platform-specific way whether a path is absolute. This
-        # defaults to the local platform if none is specified.
-        # Escape once for the string literal, and once for the regex.
-        slash = '[\\\\/]'
-        name = '[^\\\\/]+'
-        regexes = {
-          :windows => %r!^(([A-Z]:#{slash})|(#{slash}#{slash}#{name}#{slash}#{name})|(#{slash}#{slash}\?#{slash}#{name}))!i,
-          :posix   => %r!^/!,
-        }
-
-        rval = (!!(arg =~ regexes[:posix])) || (!!(arg =~ regexes[:windows]))
-        rval or raise Puppet::ParseError, ("#{arg.inspect} is not an absolute path.")
       end
     end
   end
diff --git a/lib/puppet/parser/functions/validate_augeas.rb b/lib/puppet/parser/functions/validate_augeas.rb
index 154d660..4ea4fe0 100644
--- a/lib/puppet/parser/functions/validate_augeas.rb
+++ b/lib/puppet/parser/functions/validate_augeas.rb
@@ -1,3 +1,5 @@
+require 'tempfile'
+
 module Puppet::Parser::Functions
   newfunction(:validate_augeas, :doc => <<-'ENDHEREDOC') do |args|
     Perform validation of a string using an Augeas lens
diff --git a/lib/puppet/parser/functions/validate_bool.rb b/lib/puppet/parser/functions/validate_bool.rb
index 62c1d88..59a0805 100644
--- a/lib/puppet/parser/functions/validate_bool.rb
+++ b/lib/puppet/parser/functions/validate_bool.rb
@@ -24,7 +24,7 @@ module Puppet::Parser::Functions
     end
 
     args.each do |arg|
-      unless (arg.is_a?(TrueClass) || arg.is_a?(FalseClass))
+      unless function_is_bool([arg])
         raise Puppet::ParseError, ("#{arg.inspect} is not a boolean.  It looks to be a #{arg.class}")
       end
     end
diff --git a/lib/puppet/parser/functions/validate_cmd.rb b/lib/puppet/parser/functions/validate_cmd.rb
index 344a80c..5df3c60 100644
--- a/lib/puppet/parser/functions/validate_cmd.rb
+++ b/lib/puppet/parser/functions/validate_cmd.rb
@@ -1,13 +1,14 @@
 require 'puppet/util/execution'
+require 'tempfile'
 
 module Puppet::Parser::Functions
   newfunction(:validate_cmd, :doc => <<-'ENDHEREDOC') do |args|
     Perform validation of a string with an external command.
     The first argument of this function should be a string to
     test, and the second argument should be a path to a test command
-    taking a file as last argument. If the command, launched against
-    a tempfile containing the passed string, returns a non-null value,
-    compilation will abort with a parse error.
+    taking a % as a placeholder for the file path (will default to the end).
+    If the command, launched against a tempfile containing the passed string,
+    returns a non-null value, compilation will abort with a parse error.
 
     If a third argument is specified, this will be the error message raised and
     seen by the user.
@@ -16,8 +17,12 @@ module Puppet::Parser::Functions
 
     Example:
 
+        # Defaults to end of path
         validate_cmd($sudoerscontent, '/usr/sbin/visudo -c -f', 'Visudo failed to validate sudoers content')
 
+        # % as file location
+        validate_cmd($haproxycontent, '/usr/sbin/haproxy -f % -c', 'Haproxy failed to validate config content')
+
     ENDHEREDOC
     if (args.length < 2) or (args.length > 3) then
       raise Puppet::ParseError, ("validate_cmd(): wrong number of arguments (#{args.length}; must be 2 or 3)")
@@ -32,14 +37,25 @@ module Puppet::Parser::Functions
     tmpfile = Tempfile.new("validate_cmd")
     begin
       tmpfile.write(content)
+      tmpfile.close
+
+      if checkscript =~ /\s%(\s|$)/
+        check_with_correct_location = checkscript.gsub(/%/,tmpfile.path)
+      else
+        check_with_correct_location = "#{checkscript} #{tmpfile.path}"
+      end
+
       if Puppet::Util::Execution.respond_to?('execute')
-        Puppet::Util::Execution.execute("#{checkscript} #{tmpfile.path}")
+        Puppet::Util::Execution.execute(check_with_correct_location)
       else
-        Puppet::Util.execute("#{checkscript} #{tmpfile.path}")
+        Puppet::Util.execute(check_with_correct_location)
       end
     rescue Puppet::ExecutionFailure => detail
       msg += "\n#{detail}"
       raise Puppet::ParseError, msg
+    rescue Exception => detail
+      msg += "\n#{detail.class.name} #{detail}"
+      raise Puppet::ParseError, msg
     ensure
       tmpfile.unlink
     end
diff --git a/lib/puppet/parser/functions/validate_string.rb b/lib/puppet/parser/functions/validate_string.rb
index e667794..c841f6a 100644
--- a/lib/puppet/parser/functions/validate_string.rb
+++ b/lib/puppet/parser/functions/validate_string.rb
@@ -13,9 +13,14 @@ module Puppet::Parser::Functions
 
         validate_string(true)
         validate_string([ 'some', 'array' ])
-        $undefined = undef
-        validate_string($undefined)
-
+        
+    Note: validate_string(undef) will not fail in this version of the
+    functions API (incl. current and future parser). Instead, use:
+    
+        if $var == undef {
+          fail('...')
+        }
+    
     ENDHEREDOC
 
     unless args.length > 0 then
diff --git a/lib/puppet/parser/functions/values_at.rb b/lib/puppet/parser/functions/values_at.rb
index d3e69d9..f350f53 100644
--- a/lib/puppet/parser/functions/values_at.rb
+++ b/lib/puppet/parser/functions/values_at.rb
@@ -49,6 +49,7 @@ Would return ['a','c','d'].
     indices_list = []
 
     indices.each do |i|
+      i = i.to_s
       if m = i.match(/^(\d+)(\.\.\.?|\-)(\d+)$/)
         start = m[1].to_i
         stop  = m[3].to_i
diff --git a/lib/puppet/parser/functions/zip.rb b/lib/puppet/parser/functions/zip.rb
index 2b56e9c..3074f28 100644
--- a/lib/puppet/parser/functions/zip.rb
+++ b/lib/puppet/parser/functions/zip.rb
@@ -27,33 +27,7 @@ Would result in:
       raise(Puppet::ParseError, 'zip(): Requires array to work with')
     end
 
-    flatten = arguments[2] if arguments[2]
-
-    if flatten
-      klass = flatten.class
-
-      # We can have either true or false, or string which resembles boolean ...
-      unless [FalseClass, TrueClass, String].include?(klass)
-        raise(Puppet::ParseError, 'zip(): Requires either ' +
-          'boolean or string to work with')
-      end
-
-      if flatten.is_a?(String)
-        # We consider all the yes, no, y, n and so on too ...
-        flatten = case flatten
-          #
-          # This is how undef looks like in Puppet ...
-          # We yield false in this case.
-          #
-          when /^$/, '' then false # Empty string will be false ...
-          when /^(1|t|y|true|yes)$/  then true
-          when /^(0|f|n|false|no)$/  then false
-          when /^(undef|undefined)$/ then false # This is not likely to happen ...
-          else
-            raise(Puppet::ParseError, 'zip(): Unknown type of boolean given')
-        end
-      end
-    end
+    flatten = function_str2bool([arguments[2]]) if arguments[2]
 
     result = a.zip(b)
     result = flatten ? result.flatten : result
diff --git a/lib/puppet/provider/file_line/ruby.rb b/lib/puppet/provider/file_line/ruby.rb
index 3cb9f6e..ae1a8b3 100644
--- a/lib/puppet/provider/file_line/ruby.rb
+++ b/lib/puppet/provider/file_line/ruby.rb
@@ -1,5 +1,4 @@
 Puppet::Type.type(:file_line).provide(:ruby) do
-
   def exists?
     lines.find do |line|
       line.chomp == resource[:line].chomp
@@ -8,9 +7,11 @@ Puppet::Type.type(:file_line).provide(:ruby) do
 
   def create
     if resource[:match]
-      handle_create_with_match()
+      handle_create_with_match
+    elsif resource[:after]
+      handle_create_with_after
     else
-      handle_create_without_match()
+      append_line
     end
   end
 
@@ -33,7 +34,7 @@ Puppet::Type.type(:file_line).provide(:ruby) do
 
   def handle_create_with_match()
     regex = resource[:match] ? Regexp.new(resource[:match]) : nil
-    match_count = lines.select { |l| regex.match(l) }.size
+    match_count = count_matches(regex)
     if match_count > 1 && resource[:multiple].to_s != 'true'
      raise Puppet::Error, "More than one line in file '#{resource[:path]}' matches pattern '#{resource[:match]}'"
     end
@@ -48,11 +49,37 @@ Puppet::Type.type(:file_line).provide(:ruby) do
     end
   end
 
-  def handle_create_without_match
-    File.open(resource[:path], 'a') do |fh|
-      fh.puts resource[:line]
+  def handle_create_with_after
+    regex = Regexp.new(resource[:after])
+    count = count_matches(regex)
+    case count
+    when 1 # find the line to put our line after
+      File.open(resource[:path], 'w') do |fh|
+        lines.each do |l|
+          fh.puts(l)
+          if regex.match(l) then
+            fh.puts(resource[:line])
+          end
+        end
+      end
+    when 0 # append the line to the end of the file
+      append_line
+    else
+      raise Puppet::Error, "#{count} lines match pattern '#{resource[:after]}' in file '#{resource[:path]}'.  One or no line must match the pattern."
     end
   end
 
+  def count_matches(regex)
+    lines.select{|l| l.match(regex)}.size
+  end
 
+  ##
+  # append the line to the file.
+  #
+  # @api private
+  def append_line
+    File.open(resource[:path], 'a') do |fh|
+      fh.puts resource[:line]
+    end
+  end
 end
diff --git a/lib/puppet/type/file_line.rb b/lib/puppet/type/file_line.rb
index 14946bb..df263e6 100644
--- a/lib/puppet/type/file_line.rb
+++ b/lib/puppet/type/file_line.rb
@@ -21,6 +21,9 @@ Puppet::Type.newtype(:file_line) do
     In this example, Puppet will ensure both of the specified lines are
     contained in the file /etc/sudoers.
 
+    **Autorequires:** If Puppet is managing the file that will contain the line
+    being managed, the file_line resource will autorequire that file.
+
   EOT
 
   ensurable do
@@ -42,6 +45,10 @@ Puppet::Type.newtype(:file_line) do
     newvalues(true, false)
   end
 
+  newparam(:after) do
+    desc 'An optional value used to specify the line after which we will add any new lines. (Existing lines are added in place)'
+  end
+
   newparam(:line) do
     desc 'The line to be appended to the file located by the path parameter.'
   end
@@ -64,12 +71,5 @@ Puppet::Type.newtype(:file_line) do
     unless self[:line] and self[:path]
       raise(Puppet::Error, "Both line and path are required attributes")
     end
-
-    if (self[:match])
-      unless Regexp.new(self[:match]).match(self[:line])
-        raise(Puppet::Error, "When providing a 'match' parameter, the value must be a regex that matches against the value of your 'line' parameter")
-      end
-    end
-
   end
 end