select2 modification

new_matcher.js

    function matcher (params, data) {
      // Always return the object if there is nothing to compare
      if ($.trim(params.term) === '') {
        return data;
      }
       // MOVE THIS UP SO IF THE GROUP HITS A MATCH IT DOES NO SEARCH THE CHILDREN
      var original = stripDiacritics(data.text).toUpperCase();
      var oldterm = stripDiacritics(params.term).toUpperCase();

      // Check if the text contains the term
      if (original.indexOf(oldterm) > -1) {
        return data;
      }


      // Do a recursive check for options with children
      if (data.children && data.children.length > 0) {
        // Clone the data object if there are children
        // This is required as we modify the object to remove any non-matches
        var match = $.extend(true, {}, data);

        // Check each child of the option
        for (var c = data.children.length - 1; c >= 0; c--) {
          var child = data.children[c];

          var matches = matcher(params, child);

          // If there wasn't a match, remove the object in the array
          if (matches == null) {
            match.children.splice(c, 1);
          }
        }

        // If any children matched, return the new object
        if (match.children.length > 0) {
          return match;
        }

        // If there were no matching children, check just the plain object
        return matcher(params, match);
      }



      // If it doesn't contain the term, don't return anything
      return null;
    }

original_matcher.js

    function matcher (params, data) {
      // Always return the object if there is nothing to compare
      if ($.trim(params.term) === '') {
        return data;
      }

      // Do a recursive check for options with children
      if (data.children && data.children.length > 0) {
        // Clone the data object if there are children
        // This is required as we modify the object to remove any non-matches
        var match = $.extend(true, {}, data);

        // Check each child of the option
        for (var c = data.children.length - 1; c >= 0; c--) {
          var child = data.children[c];

          var matches = matcher(params, child);

          // If there wasn't a match, remove the object in the array
          if (matches == null) {
            match.children.splice(c, 1);
          }
        }

        // If any children matched, return the new object
        if (match.children.length > 0) {
          return match;
        }

        // If there were no matching children, check just the plain object
        return matcher(params, match);
      }

      var original = stripDiacritics(data.text).toUpperCase();
      var term = stripDiacritics(params.term).toUpperCase();

      // Check if the text contains the term
      if (original.indexOf(term) > -1) {
        return data;
      }

      // If it doesn't contain the term, don't return anything
      return null;
    }

select2.js

var matcher, stripDiacritics;

matcher = function(term, data) {
  var c, child, match, matches, oldterm, original;
  if ($.trim(term) === '') {
    return data;
  }
  original = stripDiacritics(data.text).toUpperCase();
  oldterm = stripDiacritics(term).toUpperCase();
  if (original.indexOf(oldterm) > -1) {
    return data;
  }
  if (data.children && data.children.length > 0) {
    match = $.extend(true, {}, data);
    c = data.children.length - 1;
    while (c >= 0) {
      child = data.children[c];
      matches = matcher(params, child);
      if (matches === null) {
        match.children.splice(c, 1);
      }
      c--;
    }
    if (match.children.length > 0) {
      return match;
    }
    return matcher(params, match);
  }
  return null;
};

stripDiacritics = function(text) {
  var match;
  match = function(a) {
    return DIACRITICS[a] || a;
  };
  return text.replace(/[^\u0000-\u007E]/g, match);
};

$(document).ready(function() {
  return $('[data-behavior="select2-asset-categories"]').each(function() {
    return $(this).select2({
      theme: 'bootstrap',
      matcher: function(term, text) {
        return matcher(term, text) !== null;
      }
    });
  });
});

// ---
// generated by coffee-script 1.9.2

I think if I move the order the group options will stay open if the search term matches the group text. if not then it will search the group options.