Cache clearing in Revision did not include wiki_reference_cache, which caused new pages to be created as orphans

app/models/revision.rb

@@ -54,12 +54,12 @@ class Revision
 
   # Returns an array of all the WikiWords present in the content of this revision.
   def wiki_words
-    unless @wiki_words_cache 
+    unless @wiki_words_cache
       wiki_chunks = display_content.find_chunks(WikiChunk::WikiLink)
       @wiki_words_cache = wiki_chunks.map { |c| ( c.escaped? ? nil : c.page_name ) }.compact.uniq
     end
     @wiki_words_cache
-  end  
+  end
 
   # Returns an array of all the WikiWords present in the content of this revision.
   # that already exists as a page in the web.
@@ -88,8 +88,8 @@ class Revision
   end
 
   def clear_display_cache
-    @wiki_references_cache = @published_cache = @display_cache = nil
-    @wiki_includes_cache = nil
+    @wiki_words_cache = @published_cache = @display_cache = @wiki_includes_cache = 
+      @wiki_references_cache = nil
   end
 
   def display_published

app/models/web.rb

@@ -1,8 +1,8 @@
-require "cgi"
-require "page"
-require "page_set"
-require "wiki_words"
-require "zip/zip"
+require 'cgi'
+require 'page'
+require 'page_set'
+require 'wiki_words'
+require 'zip/zip'
 
 class Web
   attr_accessor :name, :password, :markup, :color, :safe_mode, :pages
@@ -35,7 +35,7 @@ class Web
 
   def address=(the_address)
     if the_address != CGI.escape(the_address)
-      raise Instiki::ValidationError.new("Web name should contain only valid URI characters") 
+      raise Instiki::ValidationError.new('Web name should contain only valid URI characters') 
     end
     @address = the_address
   end
@@ -162,6 +162,7 @@ class Web
   end
 
   private
+
     # Returns an array of all the wiki words in any current revision
     def wiki_words
       pages.values.inject([]) { |wiki_words, page| wiki_words << page.wiki_words }.flatten.uniq

test/unit/web_test.rb

@@ -126,6 +126,19 @@ class WebTest < Test::Unit::TestCase
     }
   end
 
+  def test_new_page_linked_from_mother_page
+    # this was a bug in revision 204
+    home = Page.new(@web, 'HomePage', 'This page refers to AnotherPage', 
+        Time.local(2004, 4, 4, 16, 50), 'Alexey Verkhovsky')
+    another_page = Page.new(@web, 'AnotherPage', 'This is \AnotherPage', 
+        Time.local(2004, 4, 4, 16, 51), 'Alexey Verkhovsky')
+
+    @web.add_page(home)
+    @web.add_page(another_page)
+    
+    assert_equal [home], @web.select.pages_that_link_to('AnotherPage')
+  end
+
   private
 
   def add_sample_pages