--- migrate_from_trac.rake.orig	2014-01-06 12:52:50.947867100 +0100
+++ migrate_from_trac.rake.codeblock	2014-01-21 16:18:31.830335105 +0100
@@ -327,12 +327,12 @@ namespace :redmine do
         # We would like to convert the Code highlighting too
         # This will go into the next line.
         shebang_line = false
-        # Reguar expression for start of code
-        pre_re = /\{\{\{/
-        # Code hightlighing...
+        # Regluar expression for start of code
+        pre_re = /^\s*\{\{\{\s*$/
+        # Code highlighting...
         shebang_re = /^\#\!([a-z]+)/
         # Regular expression for end of code
-        pre_end_re = /\}\}\}/
+        pre_end_re = /^\s*\}\}\}\s*$/
 
         # Go through the whole text..extract it line by line
         text = text.gsub(/^(.*)$/) do |line|