better regex for capturing urls (sensitive to urls in tags) [ci skip]

public/javascripts/app/views/content_view.js

@@ -42,8 +42,9 @@ app.views.Content = app.views.StreamObject.extend({
     }
 
     function urlify(text) {
-      var urlRegex = /[-a-zA-Z0-9@:%_\+.~#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~#?&//=]*)?/gi
-      return text.replace(urlRegex, function(url) {
+      var urlRegex = /(=\s?'|=\s?")?[-a-zA-Z0-9@:%_\+.~#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~#?&//=]*)?/gi
+      return text.replace(urlRegex, function(url, preceeder) {
+        if(preceeder) return url
         var protocol = (url.search(/:\/\//) == -1 ? "http://" : "")
         return "<a href='" + protocol + url + "' target=_blank>" + url + "</a>"
       })

spec/javascripts/app/views/post_view_spec.js

@@ -141,6 +141,14 @@ describe("app.views.Post", function(){
           expect(view.$("a[href='" + link + "']").text()).toContain(link)
         })
       })
+
+      it("doesn't create link tags for links that are already in <a/> or <img/> tags", function(){
+        link = "http://google.com"
+
+        this.statusMessage.set({text : "![cats](http://google.com/cats)"})
+        var view = new app.views.Content({model : this.statusMessage})
+        expect(view.presenter().text).toNotContain('</a>')
+      })
     })
 
     context("user not signed in", function(){