matplotlib
diff --git a/‎doc/_static/mpl.css
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+27Lines changed: 27 additions & 0 deletions b/‎doc/_static/mpl.css
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diff --git a/‎doc/_templates/layout.html
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+8Lines changed: 8 additions & 0 deletions b/‎doc/_templates/layout.html
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+8Lines changed: 8 additions & 0 deletions
@@ -710,6 +710,33 @@ figcaption {
   text-align: center;
 }
 
+/* "Go to released version" message. */
+#unreleased-message {
+  background: #d62728;
+  box-sizing: border-box;
+  font-weight: bold;
+  left: 0;
+  min-height: 3em;
+  padding: 0.5em;
+  position: fixed;
+  top: 0;
+  width: 100%;
+  z-index: 10000;
+}
+
+#unreleased-message + div {
+  margin-top: 3em;
+}
+
+#unreleased-message a {
+  color: #fff !important;
+  text-shadow:4px 4px 10px rgba(0,0,0,0.5);
+}
+
+#unreleased-message a:hover {
+  text-shadow:4px 4px 10px rgba(0,0,0,0.8);
+}
+
 /* Fork me on GitHub "button" */
 #forkongithub a{
   background:#FF7F0E;
 
@@ -162,6 +162,14 @@ <h3>{{ _('Navigation') }}</h3>
 
 {% block relbar1 %}
 
+{%- if '+' in release %}
+<div id="unreleased-message">
+    You are reading documentation for the unreleased version of Matplotlib.
+    <a href="https://matplotlib.org/search.html?q={{ title | striptags | urlencode }}&amp;check_keywords=yes&amp;area=default">
+        Try searching for the released version of this page instead?
+    </a>
+</div>
+{%- endif %}
 <div style="background-color: white; text-align: left; padding: 10px 10px 15px 15px; position: relative;">
 {%- if builder in ('htmlhelp', 'devhelp', 'latex') %}
 <a href="{{ pathto('index') }}"><img src="{{pathto("_static/logo2.png", 1) }}" width="540px" border="0" alt="matplotlib"/></a>