From 24b6343ca2dc56eda58de2c9c4bb8d383bd93ba6 Mon Sep 17 00:00:00 2001
From: Joshua Chen <sidachen2003@gmail.com>
Date: Mon, 18 Jul 2022 19:16:00 +0800
Subject: [PATCH] fix(utils): recognize ~~~ as code fences in link replacement
 (#7801)

---
 .../__snapshots__/markdownLinks.test.ts.snap     | 12 ++++++++++++
 .../src/__tests__/markdownLinks.test.ts          | 12 ++++++++++++
 packages/docusaurus-utils/src/markdownLinks.ts   | 16 +++++++---------
 3 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/packages/docusaurus-utils/src/__tests__/__snapshots__/markdownLinks.test.ts.snap b/packages/docusaurus-utils/src/__tests__/__snapshots__/markdownLinks.test.ts.snap
index f42727544ff0..18260d1b6051 100644
--- a/packages/docusaurus-utils/src/__tests__/__snapshots__/markdownLinks.test.ts.snap
+++ b/packages/docusaurus-utils/src/__tests__/__snapshots__/markdownLinks.test.ts.snap
@@ -76,6 +76,18 @@ exports[`replaceMarkdownLinks ignores links in fenced blocks 1`] = `
 \`\`\`
 [foo](foo.md)
 \`\`\`\`
+
+~~~js
+[foo](foo.md)
+~~~
+
+~~~js
+[foo](foo.md)
+\`\`\`
+[foo](foo.md)
+\`\`\`
+[foo](foo.md)
+~~~
 ",
 }
 `;
diff --git a/packages/docusaurus-utils/src/__tests__/markdownLinks.test.ts b/packages/docusaurus-utils/src/__tests__/markdownLinks.test.ts
index 46df9f1e6629..4a17e1140afb 100644
--- a/packages/docusaurus-utils/src/__tests__/markdownLinks.test.ts
+++ b/packages/docusaurus-utils/src/__tests__/markdownLinks.test.ts
@@ -179,6 +179,18 @@ The following operations are defined for [URI]s:
 \`\`\`
 [foo](foo.md)
 \`\`\`\`
+
+~~~js
+[foo](foo.md)
+~~~
+
+~~~js
+[foo](foo.md)
+\`\`\`
+[foo](foo.md)
+\`\`\`
+[foo](foo.md)
+~~~
 `,
       }),
     ).toMatchSnapshot();
diff --git a/packages/docusaurus-utils/src/markdownLinks.ts b/packages/docusaurus-utils/src/markdownLinks.ts
index af322fe840d2..6a34b275f3d4 100644
--- a/packages/docusaurus-utils/src/markdownLinks.ts
+++ b/packages/docusaurus-utils/src/markdownLinks.ts
@@ -82,21 +82,19 @@ export function replaceMarkdownLinks<T extends ContentPaths>({
   const brokenMarkdownLinks: BrokenMarkdownLink<T>[] = [];
 
   // Replace internal markdown linking (except in fenced blocks).
-  let fencedBlock = false;
-  let lastCodeFence = '';
+  let lastCodeFence: string | null = null;
   const lines = fileString.split('\n').map((line) => {
-    if (line.trim().startsWith('```')) {
-      const codeFence = line.trim().match(/^`+/)![0]!;
-      if (!fencedBlock) {
-        fencedBlock = true;
+    const codeFence = line.trimStart().match(/^`{3,}|^~{3,}/)?.[0];
+    if (codeFence) {
+      if (!lastCodeFence) {
         lastCodeFence = codeFence;
         // If we are in a ````-fenced block, all ``` would be plain text instead
         // of fences
-      } else if (codeFence.length >= lastCodeFence.length) {
-        fencedBlock = false;
+      } else if (codeFence.startsWith(lastCodeFence)) {
+        lastCodeFence = null;
       }
     }
-    if (fencedBlock) {
+    if (lastCodeFence) {
       return line;
     }