From a5cecbdfee56db2409bd6829b292ed61748377c2 Mon Sep 17 00:00:00 2001
From: Ika <ikatyang@gmail.com>
Date: Sat, 15 Sep 2018 22:02:36 +0800
Subject: [PATCH] docs(html): add reference for boolean attributes

---
 src/language-html/printer-htmlparser2.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/language-html/printer-htmlparser2.js b/src/language-html/printer-htmlparser2.js
index 21e2a491c..cbdd1f0ff 100644
--- a/src/language-html/printer-htmlparser2.js
+++ b/src/language-html/printer-htmlparser2.js
@@ -202,6 +202,7 @@ function genericPrint(path, options, print) {
   }
 }
 
+// https://html.spec.whatwg.org/multipage/indices.html#attributes-3
 function isBooleanAttributeNode(node) {
   return (
     node.type === "attribute" &&