commit dcc348323f6d989651589c76948b71f669f3bfb3
Author: Erik Stielstra <info@erikstielstra.nl>
Date:   Fri Sep 23 13:44:06 2016 +0200

    2763911-6

diff --git a/core/modules/system/templates/menu.html.twig b/core/modules/system/templates/menu.html.twig
index 2d058dd..389e9aa 100644
--- a/core/modules/system/templates/menu.html.twig
+++ b/core/modules/system/templates/menu.html.twig
@@ -32,11 +32,11 @@
   {% import _self as menus %}
   {% for item in items %}
     {% if loop.first %}
-      <ul
+      <ul {% spaceless %}
         {% if menu_level == 0 %}
           {{ attributes }}
         {% endif %}
-      >
+      {% endspaceless %}>
     {% endif %}
     <li{{ item.attributes }}>
       {{ link(item.title, item.url) }}
diff --git a/core/modules/toolbar/templates/menu--toolbar.html.twig b/core/modules/toolbar/templates/menu--toolbar.html.twig
index 788da20..ce0d92e 100644
--- a/core/modules/toolbar/templates/menu--toolbar.html.twig
+++ b/core/modules/toolbar/templates/menu--toolbar.html.twig
@@ -32,13 +32,13 @@
   {% import _self as menus %}
   {% for item in items %}
     {% if loop.first %}
-      <ul
+      <ul {% spaceless %}
         {% if menu_level == 0 %}
           {{ attributes.addClass('toolbar-menu') }}
         {% else %}
           class="toolbar-menu"
         {% endif %}
-      >
+      {% endspaceless %}>
     {% endif %}
     {%
       set classes = [
diff --git a/core/themes/classy/templates/navigation/menu.html.twig b/core/themes/classy/templates/navigation/menu.html.twig
index c850aa6..3f73bc1 100644
--- a/core/themes/classy/templates/navigation/menu.html.twig
+++ b/core/themes/classy/templates/navigation/menu.html.twig
@@ -30,13 +30,13 @@
   {% import _self as menus %}
   {% for item in items %}
     {% if loop.first %}
-      <ul
+      <ul {% spaceless %}
         {% if menu_level == 0 %}
           {{ attributes.addClass('menu') }}
         {% else %}
           class="menu"
         {% endif %}
-      >
+      {% endspaceless %}>
     {% endif %}
     {%
       set classes = [
diff --git a/core/themes/stable/templates/navigation/menu--toolbar.html.twig b/core/themes/stable/templates/navigation/menu--toolbar.html.twig
index d5ef1ad..215bba9 100644
--- a/core/themes/stable/templates/navigation/menu--toolbar.html.twig
+++ b/core/themes/stable/templates/navigation/menu--toolbar.html.twig
@@ -30,13 +30,13 @@
   {% import _self as menus %}
   {% for item in items %}
     {% if loop.first %}
-      <ul
+      <ul {% spaceless %}
         {% if menu_level == 0 %}
           {{ attributes.addClass('toolbar-menu') }}
         {% else %}
           class="toolbar-menu"
         {% endif %}
-      >
+      {% endspaceless %}>
     {% endif %}
     {%
       set classes = [
diff --git a/core/themes/stable/templates/navigation/menu.html.twig b/core/themes/stable/templates/navigation/menu.html.twig
index 2d058dd..389e9aa 100644
--- a/core/themes/stable/templates/navigation/menu.html.twig
+++ b/core/themes/stable/templates/navigation/menu.html.twig
@@ -32,11 +32,11 @@
   {% import _self as menus %}
   {% for item in items %}
     {% if loop.first %}
-      <ul
+      <ul {% spaceless %}
         {% if menu_level == 0 %}
           {{ attributes }}
         {% endif %}
-      >
+      {% endspaceless %}>
     {% endif %}
     <li{{ item.attributes }}>
       {{ link(item.title, item.url) }}