Merge pull request rouge-ruby#970 from dblessing/sqf_minor_fixes

Minor changes to SQF

lib/rouge/lexers/sqf.rb

@@ -10,40 +10,40 @@ class SQF < RegexLexer
       desc "Status Quo Function, a Real Virtuality engine scripting language"
 
       def self.wordoperators
-        @wordoperators = Set.new %w(
+        @wordoperators ||= Set.new %w(
           and or not
         )
       end
 
       def self.initializers
-        @initializers = Set.new %w(
+        @initializers ||= Set.new %w(
           private param params
         )
       end
 
       def self.controlflow
-        @controlflow = Set.new %w(
+        @controlflow ||= Set.new %w(
           if then else exitwith switch do case default while for from to step
           foreach
         )
       end
 
       def self.constants
-        @constants = Set.new %w(
+        @constants ||= Set.new %w(
           true false player confignull controlnull displaynull grpnull
           locationnull netobjnull objnull scriptnull tasknull teammembernull
         )
       end
 
       def self.namespaces
-        @namespaces = Set.new %w(
+        @namespaces ||= Set.new %w(
           currentnamespace missionnamespace parsingnamespace profilenamespace
           uinamespace
         )
       end
 
       def self.diag_commands
-        @diag_commands = Set.new %w(
+        @diag_commands ||= Set.new %w(
           diag_activemissionfsms diag_activesqfscripts diag_activesqsscripts
           diag_activescripts diag_captureframe diag_captureframetofile
           diag_captureslowframe diag_codeperformance diag_drawmode diag_enable
@@ -58,10 +58,6 @@ def self.commands
         @commands = self.commands
       end
 
-      def self.detect?(text)
-        false
-      end
-
       state :root do
         # Whitespace
         rule %r"\s+", Text
@@ -107,7 +103,6 @@ def self.detect?(text)
           end
         end
       end
-
     end
   end
 end