godoc: improved output of examples in html.

Fixes #2467.
Fixes #2464.

R=golang-dev, rsc, adg
CC=golang-dev
https://golang.org/cl/5447051

diff --git a/lib/godoc/example.html b/lib/godoc/example.html
index 8c1fd1adc632710cb66f01fbd15a80e54e5dd728..7badbb6fad5931cb2b765176f7dd5229d3b2686a 100644 (file)
--- a/lib/godoc/example.html
+++ b/lib/godoc/example.html
@@ -3,9 +3,12 @@
                <p class="exampleHeading">▹ Example</p>
        </div>
        <div class="expanded">
-               <p class="exampleHeading">▾ Example Code:</p>
+               <p class="exampleHeading">▾ Example</p>
+               <p>Code:</p>
                <p class="code"><pre>{{.Code}}</pre></p>
+               {{if .Output}}
                <p>Output:</p>
                <p class="output"><pre>{{html .Output}}</pre></p>
+               {{end}}
        </div>
 </div>