Fix combobox autocomplete behavior for taginfo

js/lib/d3.combobox.js

@@ -177,10 +177,9 @@ d3.combobox = function() {
         function autocomplete() {
             var v = value();
 
-            if (!v) {
-                idx = -1;
-                return;
-            }
+            idx = -1;
+
+            if (!v) return;
 
             for (var i = 0; i < suggestions.length; i++) {
                 if (suggestions[i].value.toLowerCase().indexOf(v.toLowerCase()) === 0) {

test/spec/lib/d3.combobox.js

@@ -133,7 +133,7 @@ describe("d3.combobox", function() {
     });
 
     it("does not select when value is not a prefix of any suggestion", function() {
-        input.call(combobox.data(data));
+        input.call(combobox.fetcher(function(_, cb) { cb(data); }));
         input.node().focus();
         simulateKeypress('c');
         simulateKeypress('a');