Open HN links inside the app instead of redirecting to news.ycombinat…

…or.com.

js/hn.js

@@ -316,11 +316,19 @@
 					div.innerHTML = html;
 
 					// Make all links open in new tab/window
+					// If the link is HN internal, redirect to the webapp page
+					var itemid_regex = /http[s]?:\/\/news.ycombinator.com\/item\?id=([0-9]+)/;
 					var links = div.querySelectorAll('a');
 					for (var i=0, l=links.length; i<l; i++){
-						links[i].target = '_blank';
+						var m=links[i].href.match(itemid_regex);
+						if (m && m[1]){
+							links[i].href = '#/item/' + m[1];
+						} else {
+							links[i].target = '_blank';
+						}
 					}
 
+
 					// 20K chars will be the max to trigger collapsible comments.
 					// I can use number of comments as the condition but some comments
 					// might have too many chars and make the page longer.