net/http: panic on duplicate registrations
Otherwise, the registration semantics are
init-order-dependent, which I was trying very hard
to avoid in the API. This may break broken programs.
Fixes #2900.
R=golang-dev, r, bradfitz, dsymonds, balasanjay, kevlar
CC=golang-dev
https://golang.org/cl/5644051
diff --git a/doc/go1.html b/doc/go1.html
index 4191c4b..e3d2354 100644
--- a/doc/go1.html
+++ b/doc/go1.html
@@ -1146,11 +1146,17 @@
</ul>
<p>
-Also, the <code>Request.RawURL</code> field has been removed; it was a
+The <code>Request.RawURL</code> field has been removed; it was a
historical artifact.
</p>
<p>
+The <code>Handle</code> and <code>HandleFunc</code>
+functions, and the similarly-named methods of <code>ServeMux</code>,
+now panic if an attempt is made to register the same pattern twice.
+</p>
+
+<p>
<em>Updating</em>:
Running <code>go fix</code> will update the few programs that are affected except for
uses of <code>RawURL</code>, which must be fixed by hand.
