From d8eed94df23ea659c702551c353c06e00f8e3a1c Mon Sep 17 00:00:00 2001
From: Hyunje Jun <me@noraesae.net>
Date: Wed, 18 Apr 2018 17:47:30 +0900
Subject: [PATCH] Use header's slug as it is if possible

---
 lib/util/index.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/util/index.js b/lib/util/index.js
index 0545fe0fb2..bfa48e24cf 100644
--- a/lib/util/index.js
+++ b/lib/util/index.js
@@ -59,10 +59,11 @@ exports.extractHeaders = (content, include = [], md) => {
   tokens.forEach((t, i) => {
     if (t.type === 'heading_open' && include.includes(t.tag)) {
       const title = tokens[i + 1].content
+      const slug = t.attrs.find(([name]) => name === 'id')[1]
       res.push({
         level: parseInt(t.tag.slice(1), 10),
         title,
-        slug: md.slugify(title)
+        slug: slug || md.slugify(title)
       })
     }
   })