open pad links when clicking in readOnly mode

www/pad/main.js

@@ -299,6 +299,13 @@ define([
 
             var DD = new DiffDom(diffOptions);
 
+            var openLink = function (e) {
+                var el = e.currentTarget;
+                if (!el || el.nodeName !== 'A') { return; }
+                var href = el.getAttribute('href');
+                if (href) { window.open(href, '_blank'); }
+            };
+
             // apply patches, and try not to lose the cursor in the process!
             var applyHjson = function (shjson) {
                 var userDocStateDom = hjsonToDom(JSON.parse(shjson));
@@ -308,6 +315,11 @@ define([
                 }
                 var patch = (DD).diff(inner, userDocStateDom);
                 (DD).apply(inner, patch);
+                if (readOnly) {
+                    var $links = $(inner).find('a');
+                    // off so that we don't end up with multiple identical handlers
+                    $links.off('click', openLink).on('click', openLink);
+                }
             };
 
             var stringifyDOM = module.stringifyDOM = function (dom) {