Keep anchor (i.e. to a specific issue note) throughout login (#21110).

Patch by Jens Krämer.

git-svn-id: http://svn.redmine.org/redmine/trunk@14767 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/account/login.html.erb

@@ -1,6 +1,6 @@
 <%= call_hook :view_account_login_top %>
 <div id="login-form">
-<%= form_tag(signin_path) do %>
+<%= form_tag(signin_path, onsubmit: 'return keepAnchorOnSignIn(this);') do %>
 <%= back_url_hidden_field_tag %>
 <table>
 <tr>

public/javascripts/application.js

@@ -651,6 +651,17 @@ $(document).ready(function(){
   toggleDisabledInit();
 });
 
+function keepAnchorOnSignIn(form){
+  var hash = decodeURIComponent(self.document.location.hash);
+  if (hash) {
+    if (hash.indexOf("#") === -1) {
+      hash = "#" + hash;
+    }
+    form.action = form.action + hash;
+  }
+  return true;
+}
+
 $(document).ready(setupAjaxIndicator);
 $(document).ready(hideOnLoad);
 $(document).ready(addFormObserversForDoubleSubmit);