From 1c55976fb6e064dbb4c0fafffb98ab9521b7269a Mon Sep 17 00:00:00 2001
From: bgpat <bgpat@users.noreply.github.com>
Date: Wed, 7 Aug 2019 01:20:07 +0900
Subject: [PATCH 1/3] Don't replace leading digit

---
 src/core/render/slugify.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/core/render/slugify.js b/src/core/render/slugify.js
index 719e49443..948c81a8f 100644
--- a/src/core/render/slugify.js
+++ b/src/core/render/slugify.js
@@ -19,7 +19,6 @@ export function slugify(str) {
     .replace(re, '')
     .replace(/\s/g, '-')
     .replace(/-+/g, '-')
-    .replace(/^(\d)/, '_$1')
   let count = cache[slug]
 
   count = hasOwn.call(cache, slug) ? count + 1 : 0

From 4f28cae11f76c113f2e876b8b0753a1583a707f2 Mon Sep 17 00:00:00 2001
From: bgpat <bgpat@users.noreply.github.com>
Date: Wed, 7 Aug 2019 01:34:17 +0900
Subject: [PATCH 2/3] Install css.escape

---
 package-lock.json | 6 ++++++
 package.json      | 1 +
 2 files changed, 7 insertions(+)

diff --git a/package-lock.json b/package-lock.json
index ba2f7519d..dad548abb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2907,6 +2907,12 @@
       "integrity": "sha512-a+EPoD+uZiNfh+5fxw2nO9QwFa6nJe2Or35fGY6Ipw1R3R4AGz1d1TEZrCegvw2YTmZ0jXirGYlzxxpYSHwpEg==",
       "dev": true
     },
+    "css.escape": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/css.escape/-/css.escape-1.5.1.tgz",
+      "integrity": "sha1-QuJ9T6BK4y+TGktNQZH6nN3ul8s=",
+      "dev": true
+    },
     "cssesc": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-2.0.0.tgz",
diff --git a/package.json b/package.json
index 17572fdd1..858862bf9 100644
--- a/package.json
+++ b/package.json
@@ -55,6 +55,7 @@
     "chokidar": "^3.2.1",
     "conventional-changelog-cli": "^2.0.25",
     "cross-env": "^6.0.3",
+    "css.escape": "^1.5.1",
     "cssnano": "^4.1.10",
     "eslint": "^5.16.0",
     "eslint-config-xo-space": "^0.21.0",

From 12745acb65f0fd8fc904ff080618ba584d62d298 Mon Sep 17 00:00:00 2001
From: bgpat <bgpat@users.noreply.github.com>
Date: Wed, 7 Aug 2019 01:35:10 +0900
Subject: [PATCH 3/3] Escape leading digit of the anchor id

---
 src/core/event/scroll.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/event/scroll.js b/src/core/event/scroll.js
index 3e9e33265..6a068e79a 100644
--- a/src/core/event/scroll.js
+++ b/src/core/event/scroll.js
@@ -1,6 +1,7 @@
 import {isMobile} from '../util/env'
 import * as dom from '../util/dom'
 import Tweezer from 'tweezer.js'
+import cssEscape from 'css.escape'
 
 const nav = {}
 let hoverOver = false
@@ -131,7 +132,7 @@ export function scrollIntoView(path, id) {
     return
   }
 
-  const section = dom.find('#' + id)
+  const section = dom.find('#' + cssEscape(id))
   section && scrollTo(section)
 
   const li = nav[getNavKey(path, id)]