修改 Markdown 解析代码以支持 sup 标签 (xitu#69)

Author: ydfzgyj

site/_core/Marked.js

@@ -450,6 +450,7 @@ var inline = {
   escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
   autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
   url: noop,
+  sup: /^<sup>([\s\S]+?)<\/sup>/,
   tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
   link: /^!?\[(inside)\]\(href\)/,
   reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
@@ -596,6 +597,13 @@ InlineLexer.prototype.output = function(src) {
       continue;
     }
 
+    // sup
+    if (cap = this.rules.sup.exec(src)) {
+      src = src.substring(cap[0].length);
+      out.push(React.DOM.sup(null, this.output(cap[2] || cap[1])));
+      continue;
+    }
+
     // tag
     if (cap = this.rules.tag.exec(src)) {
       src = src.substring(cap[0].length);