Code smell: Use &&= for dependent initialization

Replaced 6 occurances of

    ([$@]?\w+) += +(.*) +(if +\1|unless +\1.nil\?)$

with

    \1 &&= \2

3 Examples:

    The code:
        end
    becomes:
        end
    The code:

    becomes:

    The code:
        res
    becomes:
        res

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/puppet/util/settings.rb b/lib/puppet/util/settings.rb
index 7c70dfa8f..80cab1976 100644
--- a/lib/puppet/util/settings.rb
+++ b/lib/puppet/util/settings.rb
@@ -137,7 +137,7 @@ class Puppet::Util::Settings
     # Handle a command-line argument.
     def handlearg(opt, value = nil)
         @cache.clear
-        value = munge_value(value) if value
+        value &&= munge_value(value)
         str = opt.sub(/^--/,'')
 
         bool = true
@@ -658,7 +658,7 @@ if @config.include?(:run_mode)
 
     def uninterpolated_value(param, environment = nil)
         param = param.to_sym
-        environment = environment.to_sym if environment
+        environment &&= environment.to_sym
 
         # See if we can find it within our searchable list of values
         val = catch :foundval do
@@ -682,7 +682,7 @@ if @config.include?(:run_mode)
     # in which to search before the other configuration sections.
     def value(param, environment = nil)
         param = param.to_sym
-        environment = environment.to_sym if environment
+        environment &&= environment.to_sym
 
         # Short circuit to nil for undefined parameters.
         return nil unless @config.include?(param)