Add support for <xmp>

Closes GH-20.

Author: wooorm

lib/handlers/code.js

@@ -16,11 +16,13 @@ function code(h, node) {
   var classList;
   var lang;
 
-  while (++index < length) {
-    value = values[index];
-    if (is(value, 'code') && has(value, 'className')) {
-      classList = value.properties.className;
-      break;
+  if (node.tagName === 'pre') {
+    while (++index < length) {
+      value = values[index];
+      if (is(value, 'code') && has(value, 'className')) {
+        classList = value.properties.className;
+        break;
+      }
     }
   }
 

lib/handlers/index.js

@@ -34,7 +34,7 @@ exports.br = require('./break');
 
 exports.p = require('./paragraph');
 exports.hr = require('./thematic-break');
-exports.pre = require('./code');
+exports.xmp = exports.pre = require('./code');
 exports.blockquote = require('./blockquote');
 
 exports.h1 =

test/fixtures/xmp/index.html

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

test/fixtures/xmp/index.json

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

test/fixtures/xmp/index.md

@@ -0,0 +1,28 @@
+```
+alpha();
+```
+
+```
+<code>bravo();</code>
+```
+
+
+```
+charlie <code>delta();</code> echo
+```
+
+```
+foxtrot <code>golf();</code>
+```
+
+```
+<code>hotel();</code> india
+```
+
+```
+<code></code>
+```
+
+```
+juliett <div><code>kilo();</code></div> lima
+```