From 076acf6a981fede12c1bcda1f7e6da2f49d785c4 Mon Sep 17 00:00:00 2001
From: Kristian Gregorius Hustad <krihus@ifi.uio.no>
Date: Mon, 10 Sep 2018 23:41:38 +0200
Subject: [PATCH] Prefix base URL to breadcrumb root URL

The base URL was only prefixed to the breadcrumbs following the root.
See https://github.com/jupyterhub/jupyterhub/issues/2137 for problem
description.
---
 notebook/static/tree/js/notebooklist.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/notebook/static/tree/js/notebooklist.js b/notebook/static/tree/js/notebooklist.js
index ab3e47ef7..444eb6ad2 100644
--- a/notebook/static/tree/js/notebooklist.js
+++ b/notebook/static/tree/js/notebooklist.js
@@ -382,7 +382,8 @@ define([
         var breadcrumb = $('.breadcrumb');
         breadcrumb.empty();
         var list_item = $('<li/>');
-        var root = $('<li/>').append('<a href="/tree"><i class="fa fa-folder"></i></a>').click(function(e) {
+        var root_url = utils.url_path_join(that.base_url, '/tree');
+        var root = $('<li/>').append('<a href="' + root_url + '"><i class="fa fa-folder"></i></a>').click(function(e) {
             // Allow the default browser action when the user holds a modifier (e.g., Ctrl-Click)
             if(e.altKey || e.metaKey || e.shiftKey) {
                 return true;