cache compiled regexps in constants

app/models/chunks/wiki.rb

@@ -62,11 +62,12 @@ module WikiChunk
   # NOTE: This chunk must be tested before WikiWord since
   #       a WikiWords can be a substring of a WikiLink. 
   class Link < WikiLink
-    def self.pattern() /\[\[([^\]]+)\]\]/ end
     
-    unless defined? ALIASED_LINK_PATTERN
+    WIKI_LINK = /\[\[([^\]]+)\]\]/ unless defined? WIKI_LINK
-      ALIASED_LINK_PATTERN = Regexp.new('^(.*)?\|(.*)$', 0, 'utf-8')
+    ALIASED_LINK_PATTERN = 
-    end
+        Regexp.new('^(.*)?\|(.*)$', 0, 'utf-8') unless defined? ALIASED_LINK_PATTERN
+
+    def self.pattern() WIKI_LINK end
 
     attr_reader :page_name, :link_text
 

app/models/wiki_words.rb

@@ -14,12 +14,13 @@ module WikiWords
     "աբգդեզէըթժիլխծկհձղճմյնշոչպջռսվտրցւփքօֆև"
 
   WIKI_WORD_PATTERN = '[A-Z' + I18N_HIGHER_CASE_LETTERS + '][a-z' + I18N_LOWER_CASE_LETTERS + ']+[A-Z' + I18N_HIGHER_CASE_LETTERS + ']\w+'
+  CAMEL_CASED_WORD_BORDER = /([a-z#{I18N_LOWER_CASE_LETTERS}])([A-Z#{I18N_HIGHER_CASE_LETTERS}])/u
 
   def self.separate(wiki_word, ignore_separation = false)
     if ignore_separation
       wiki_word
     else
-      wiki_word.gsub(/([a-z#{I18N_LOWER_CASE_LETTERS}])([A-Z#{I18N_HIGHER_CASE_LETTERS}])/u, '\1 \2')
+      wiki_word.gsub(CAMEL_CASED_WORD_BORDER, '\1 \2')
     end
   end
 end