Pre-filters search words to collapse dashes everywhere: 2444-22-1 becomes 2444221 and radio-controlled becomes radiocontrolled

SearchFitler.php

<?php

add_filter('shopp_search_query', 'collapse_dashed_words', 5);
add_filter('shopp_boolean_search', 'collapse_dashed_words', 5);
add_filter('shopp_shortword_search', 'collapse_dashed_words', 5);
add_filter('shopp_index_content', 'collapse_dashed_words', 5);

function collapse_dashed_words ( $string ) {
  return str_replace('-', '', $string);
}