Adapting doctrineexport.grt.lua to symfony standards

Using Mysql workbench to visually design a data model for a symfony application is pretty cool. Thanks to the guys of https://code.google.com/p/mysql-workbench-doctrine-plugin/ you can export the model to a YAML file ready for Doctrine.
the only problem I found using version 0.36 is that classes names are not in UpperCamelCase but in lowerCameCase and that if you have a table column that starts wit id (like idea) it gets cut to id (issue report: https://code.google.com/p/mysql-workbench-doctrine-plugin/issues/detail?id=15). so here my two modifications of the script to behave the way I want.
At the end of function buildTableName(s) add:

if ( string.sub(s, 1, 2) == 'sf' or  string.sub(s, 1, 2) == 'Sf') then
      -- same as lcfirst
      s = string.lower(string.sub(s, 1, 2)) .. string.sub(s, 3, #s)
    else
      s = ucfirst(s)
    end
    return s

Comment out the content of the renameIdColumns function

function renameIdColumns(s)
   -- s = string.gsub(s, "(id%w+)", function(v)
   --      return "id"
   --    end)
   return s
end