Create the link only when needed

4chan_x.js

@@ -1690,11 +1690,6 @@
           var _j, _len2, _ref2;
           if (el = d.getElementById(quote.textContent.slice(2))) {
             id = quote.parentNode.parentNode.parentNode.id;
-            link = $.el('a', {
-              href: '#' + id,
-              className: 'backlink',
-              textContent: '>>' + id
-            });
             if (el.className !== 'op') {
               nogood = 0;
               _ref2 = $$('a.backlink', el);
@@ -1706,6 +1701,11 @@
                 }
               }
               if (!nogood) {
+                link = $.el('a', {
+                  href: '#' + id,
+                  className: 'backlink',
+                  textContent: '>>' + id
+                });
                 return $.before($('br, blockquote', el), link);
               }
             }

script.coffee

@@ -1348,10 +1348,6 @@ quoteBacklink =
     for quote in $$ 'a.quotelink', root
       if el = d.getElementById quote.textContent[2..]
         id = quote.parentNode.parentNode.parentNode.id
-        link = $.el 'a'
-          href: '#'+id
-          className: 'backlink'
-          textContent: '>>'+id
         unless el.className is 'op'
           nogood = 0
           for backlink in $$ 'a.backlink', el
@@ -1359,6 +1355,10 @@ quoteBacklink =
               nogood = 1
               break
           unless nogood
+            link = $.el 'a'
+              href: '#'+id
+              className: 'backlink'
+              textContent: '>>'+id
             $.before $('br, blockquote', el), link
 
 quotePreview =