From 4311c749ba884b3dea3976bf7f9c8b4ebe8ef5fc Mon Sep 17 00:00:00 2001
From: Divyansh Singh <40380293+brc-dd@users.noreply.github.com>
Date: Thu, 26 May 2022 17:17:39 +0530
Subject: [PATCH] fix: allow disabling `markdown-it-attrs`

---
 docs/config/app-configs.md                  |  1 +
 src/node/markdown/markdown.ts               | 19 ++++++++++-------
 src/node/markdown/plugins/highlightLines.ts | 23 +++++++++++++++++----
 3 files changed, 32 insertions(+), 11 deletions(-)

diff --git a/docs/config/app-configs.md b/docs/config/app-configs.md
index b1cf0d8f..bbffbb76 100644
--- a/docs/config/app-configs.md
+++ b/docs/config/app-configs.md
@@ -119,6 +119,7 @@ interface MarkdownOptions extends MarkdownIt.Options {
     leftDelimiter?: string
     rightDelimiter?: string
     allowedAttributes?: string[]
+    disable?: boolean
   }
 
   // markdown-it-table-of-contents cplugin options
diff --git a/src/node/markdown/markdown.ts b/src/node/markdown/markdown.ts
index b4f2d226..e343ed0c 100644
--- a/src/node/markdown/markdown.ts
+++ b/src/node/markdown/markdown.ts
@@ -29,6 +29,7 @@ export interface MarkdownOptions extends MarkdownIt.Options {
     leftDelimiter?: string
     rightDelimiter?: string
     allowedAttributes?: string[]
+    disable?: boolean
   }
   theme?: Theme
   // https://github.com/Oktavilla/markdown-it-table-of-contents
@@ -80,13 +81,17 @@ export const createMarkdownRenderer = async (
       },
       base
     )
-    // 3rd party plugins
-    .use(attrs, options.attrs)
-    .use(anchor, {
-      slugify,
-      permalink: anchor.permalink.ariaHidden({}),
-      ...options.anchor
-    })
+
+  // 3rd party plugins
+  if (!options.attrs?.disable) {
+    md.use(attrs, options.attrs)
+  }
+
+  md.use(anchor, {
+    slugify,
+    permalink: anchor.permalink.ariaHidden({}),
+    ...options.anchor
+  })
     .use(toc, {
       slugify,
       includeLevel: [2, 3],
diff --git a/src/node/markdown/plugins/highlightLines.ts b/src/node/markdown/plugins/highlightLines.ts
index 28b18393..5938f8b5 100644
--- a/src/node/markdown/plugins/highlightLines.ts
+++ b/src/node/markdown/plugins/highlightLines.ts
@@ -1,6 +1,7 @@
 // Modified from https://github.com/egoist/markdown-it-highlight-lines
 import MarkdownIt from 'markdown-it'
 
+const RE = /{([\d,-]+)}/
 const wrapperRE = /^<pre .*?><code>/
 
 export const highlightLinePlugin = (md: MarkdownIt) => {
@@ -12,13 +13,27 @@ export const highlightLinePlugin = (md: MarkdownIt) => {
     // due to use of markdown-it-attrs, the {0} syntax would have been converted
     // to attrs on the token
     const attr = token.attrs && token.attrs[0]
+    let lines = null
     if (!attr) {
-      return fence(...args)
+      // markdown-it-attrs maybe disabled
+
+      const rawInfo = token.info
+      if (!rawInfo || !RE.test(rawInfo)) {
+        return fence(...args)
+      }
+
+      const langName = rawInfo.replace(RE, '').trim()
+      // ensure the next plugin get the correct lang.
+      token.info = langName
+
+      lines = RE.exec(rawInfo)![1]
     }
 
-    const lines = attr[0]
-    if (!lines || !/[\d,-]+/.test(lines)) {
-      return fence(...args)
+    if (!lines) {
+      lines = attr![0]
+      if (!lines || !/[\d,-]+/.test(lines)) {
+        return fence(...args)
+      }
     }
 
     const lineNumbers = lines