From 51d3b9b02ba77540022cfdc6aaf2c22e3298e3db Mon Sep 17 00:00:00 2001
From: Roman Hotsiy <gotsijroman@gmail.com>
Date: Sun, 7 Jul 2019 21:26:27 +0300
Subject: [PATCH] fix: broken headings with single quote

fixes #955
---
 src/services/MarkdownRenderer.ts | 5 +++--
 src/utils/helpers.ts             | 4 ++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/services/MarkdownRenderer.ts b/src/services/MarkdownRenderer.ts
index 0e08c6c4b5..d95b3bc35c 100644
--- a/src/services/MarkdownRenderer.ts
+++ b/src/services/MarkdownRenderer.ts
@@ -1,6 +1,6 @@
 import * as marked from 'marked';
 
-import { highlight, safeSlugify } from '../utils';
+import { highlight, safeSlugify, unescapeHTMLChars } from '../utils';
 import { AppStore } from './AppStore';
 import { RedocNormalizedOptions } from './RedocNormalizedOptions';
 
@@ -65,6 +65,7 @@ export class MarkdownRenderer {
     container: MarkdownHeading[] = this.headings,
     parentId?: string,
   ): MarkdownHeading {
+    name = unescapeHTMLChars(name);
     const item = {
       id: parentId ? `${parentId}/${safeSlugify(name)}` : `section/${safeSlugify(name)}`,
       name,
@@ -88,7 +89,7 @@ export class MarkdownRenderer {
   }
 
   attachHeadingsDescriptions(rawText: string) {
-    const buildRegexp = heading => {
+    const buildRegexp = (heading: MarkdownHeading) => {
       return new RegExp(`##?\\s+${heading.name.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&')}`);
     };
 
diff --git a/src/utils/helpers.ts b/src/utils/helpers.ts
index bfe8da946c..cb90dc97fa 100644
--- a/src/utils/helpers.ts
+++ b/src/utils/helpers.ts
@@ -194,3 +194,7 @@ function parseURL(url: string) {
     return new URL(url);
   }
 }
+
+export function unescapeHTMLChars(str: string): string {
+  return str.replace(/&#(\d+);/g, (_m, code) => String.fromCharCode(parseInt(code, 10)));
+}