Add link support to mediawiki grammer. Fix a bug in rr.Node()

grammars/mediawiki.js

@@ -99,6 +99,12 @@ var mediawiki = {
       rr.Ref('singleline-wikichunk'),
       rr.EndOfLine())),
 
+  'multiline-a': rr.Node('a', rr.Sequence(
+      rr.Literal('[['),
+      rr.Node('href', rr.SingleLineText()),
+      rr.Literal('|'),
+      rr.Ref('multiline-wikichunk'),
+      rr.Literal(']]'))),
   'multiline-b': rr.Node('b', rr.Sequence(
       rr.Literal("'''"),
       rr.Ref('multiline-wikichunk'),
@@ -152,6 +158,12 @@ var mediawiki = {
       rr.Ref('multiline-wikichunk'),
       rr.Literal('</ins>'))),
 
+  'singleline-a': rr.Node('a', rr.Sequence(
+      rr.Literal('[['),
+      rr.Node('href', rr.SingleLineText()),
+      rr.Literal('|'),
+      rr.Ref('singleline-wikichunk'),
+      rr.Literal(']]'))),
   'singleline-b': rr.Node('b', rr.Sequence(
       rr.Literal("'''"),
       rr.Ref('singleline-wikichunk'),
@@ -224,7 +236,8 @@ var mediawiki = {
       rr.Ref('list-ulli2'),
       rr.Ref('list-ulli3'),
 
-      rr.Ref('multiline-bi'),
+      rr.Ref('multiline-a'),
+      rr.Ref('multiline-bi'), // before b and i
       rr.Ref('multiline-b'),
       rr.Ref('multiline-blockquote'),
       rr.Ref('multiline-code'),
@@ -243,7 +256,8 @@ var mediawiki = {
       rr.MultiLineText())),
 
   'singleline-wikichunk': rr.ZeroOrMore(rr.Or(
-      rr.Ref('singleline-bi'),
+      rr.Ref('singleline-a'),
+      rr.Ref('singleline-bi'), // before b and i
       rr.Ref('singleline-b'),
       rr.Ref('singleline-code'),
       rr.Ref('singleline-comment'),

recentrunes.js

@@ -304,7 +304,7 @@ rr.Node_.prototype.match = function(context) {
       var node = document.createElement(this.name_);
       var nodes = next['value']['nodes'];
       for (var i = 0; i < nodes.length; i++) {
-        node.appendChild(nodes[i]);
+        node.appendChild(nodes[i].cloneNode(true));
       }
       node.normalize();
       return {

test.js

@@ -81,3 +81,19 @@ QUnit.test('singleline-wikichunk', function(assert) {
   var iterable = context.rules['wikidoc'].match(context);
   assert.equal(iterable.next().value.nodes[0].innerHTML, expected);
 });
+
+QUnit.test('Link', function(assert) {
+  assert.expect(1);
+  var content = [
+    "[[http://www.example.com/foo|Test text ''with formatting'']]"
+  ].join('\n');
+
+  var expected = [
+    '<p><a><href>http://www.example.com/foo</href>',
+    'Test text <i>with formatting</i></a></p>'
+  ].join('');
+
+  var context = new rr.Context(mediawiki, content);
+  var iterable = context.rules['wikidoc'].match(context);
+  assert.equal(iterable.next().value.nodes[0].innerHTML, expected);
+});