fix relevancy heuristic

1 files changed, 7 insertions, 4 deletions

diff --git a/lib/completion.js b/lib/completion.js
index 1eb87d51..afdb7f55 100644
--- a/lib/completion.js
+++ b/lib/completion.js
@@ -21,7 +21,8 @@ var completion = (function() {
     }
 
     /** Calculates a very simple similarity value between a :query and a :string. The current
-      * implementation simply returns the cumulated length of query parts that are also in the string.
+      * implementation simply returns the cumulated length of query parts that are also found
+      * in the string, raised to the power of 3.
       */
     self.calculateRelevancy = function(query, str) {
       query = self.normalize(query);
@@ -37,7 +38,7 @@ var completion = (function() {
 
         }
       }
-      return sum;
+      return sum * sum * sum;
     }
 
     /** Trims the size of the regex cache to the configured size using a FIFO algorithm. */
@@ -201,13 +202,15 @@ var completion = (function() {
     this.readyCallback = this.fallbackReadyCallback = function(results) {
       this.completions = results;
     }
+    this.extractStringFromMatch = function(match) { return stripHtmlTags(match.str); }
   }
   AsyncFuzzyUrlCompleter.prototype = {
     // to be implemented by subclasses
     refresh: function() { },
 
     calculateRelevancy: function(query, match) {
-      return match.url.length * 10 / (fuzzyMatcher.calculateRelevancy(query, match.str)+1);
+      return match.url.length * 10 /
+        (fuzzyMatcher.calculateRelevancy(query, this.extractStringFromMatch(match)) + 1);
     },
 
     filter: function(query, callback) {
@@ -216,7 +219,7 @@ var completion = (function() {
       var handler = function(results) {
         var filtered = [];
         fuzzyMatcher.filter(query,
-                            results, function(comp) { return stripHtmlTags(comp.str) },
+                            results, self.extractStringFromMatch,
                             self.id,
                             function(match) {
           filtered.push(createHighlightingCompletion(