diff -r b396a2c97871 Doc/tools/templates/customsourcelink.html
--- a/Doc/tools/templates/customsourcelink.html	Sat Dec 10 14:15:22 2016 -0800
+++ b/Doc/tools/templates/customsourcelink.html	Sat Dec 10 19:52:59 2016 -0800
@@ -3,8 +3,14 @@
 <h3>{{ _('This Page') }}</h3>
 <ul>
 <li><a href="/index.cgi/contrast/https://bugs.python.org/file45846/{{ pathto('bugs') }}">{% trans %}Report a Bug{% endtrans %}</a> </li>
- <li><a href="/index.cgi/contrast/https://bugs.python.org/file45846/{{ pathto('_sources/' + sourcename, true)&#124;e }}" - rel="nofollow">{{ _('Show Source') }}</a> </li>
+ <li>
+ {% if version == "3.7" %}
+ {% set version = 'master' %}
+ {% endif %}
+ <a href="https://github.com/python/cpython/blob/{{ version }}/Doc/{{ sourcename&#124;replace('txt', 'rst') }}" + rel="nofollow">{{ _('Show Source') }}
+ </a>
+ </li>
 </ul>
 </div>
 {%- endif %}
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file45846/issue28929dev.patch">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file45846/issue28929dev.patch" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>