# File lib/wikicloth/wiki_buffer.rb, line 269
  def get_id_for(val)
    val.gsub!(/[^A-Za-z0-9_]+/,'')
    @idmap ||= {}
    @idmap[val] ||= 0
    @idmap[val] += 1
    @idmap[val] == 1 ? val : "#{val}-#{@idmap[val]}"
  end