indexer_in = ENV['PATH'].gsub(';', ':').split(':').detect {|p| f = File.join(p, 'indexer') ; File.exist?(f) || File.exist?(f + '.exe')}
if indexer_in
  # we know it's in the path, so run - or use indexer_in to address the path directly.
  `indexer`[/^Sphinx (\d\.\d\.\d)/, 1]
else
  puts 'not found'
end