Add support for <listing>, <plaintext> to code

Author: wooorm

lib/handlers/index.js

@@ -93,7 +93,7 @@ exports.br = require('./break');
 
 exports.p = exports.summary = require('./paragraph');
 exports.hr = require('./thematic-break');
-exports.xmp = exports.pre = require('./code');
+exports.pre = exports.listing = exports.plaintext = exports.xmp = require('./code');
 exports.blockquote = require('./blockquote');
 
 exports.h1 =

test/fixtures/listing/index.html

@@ -0,0 +1,7 @@
+<listing>alpha();</listing>
+<listing><code>bravo();</code></listing>
+<listing>charlie <code>delta();</code> echo</listing>
+<listing>foxtrot <code>golf();</code></listing>
+<listing><code>hotel();</code> india</listing>
+<listing><code></code></listing>
+<listing>juliett <div><code>kilo();</code></div> lima</listing>

test/fixtures/listing/index.json

@@ -0,0 +1,4 @@
+{
+  "fragment": true,
+  "stringify": false
+}

test/fixtures/listing/index.md

@@ -0,0 +1,28 @@
+```
+alpha();
+```
+
+```
+bravo();
+```
+
+
+```
+charlie delta(); echo
+```
+
+```
+foxtrot golf();
+```
+
+```
+hotel(); india
+```
+
+```
+
+```
+
+```
+juliettkilo();lima
+```

test/fixtures/plaintext/index.html

@@ -0,0 +1 @@
+<plaintext>and the rest is just <code>plaintext</code>

test/fixtures/plaintext/index.json

@@ -0,0 +1,4 @@
+{
+  "fragment": true,
+  "stringify": false
+}

test/fixtures/plaintext/index.md

@@ -0,0 +1,3 @@
+```
+and the rest is just <code>plaintext</code>
+```