From 4a30b6aa02e393370499799072882f3d0d32f9fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mehmet=20=C3=87al=C4=B1=C5=9Fkan?=
 <49614175+caliskanmehmet@users.noreply.github.com>
Date: Mon, 25 Nov 2024 20:01:12 +0300
Subject: [PATCH 1/2] Fixes #473 by reducing the backtracking to handle the
 long strings of spaces

---
 index.compiler.spec.tsx | 22 ++++++++++++++++++++++
 index.tsx               |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/index.compiler.spec.tsx b/index.compiler.spec.tsx
index db07f0bf..15141dd9 100644
--- a/index.compiler.spec.tsx
+++ b/index.compiler.spec.tsx
@@ -4824,3 +4824,25 @@ it('#597 handles script tag with empty content', () => {
     </script>
   `)
 })
+
+it('#473 handles content with multiple empty spaces without crashing', () => {
+  render(
+    compiler(
+      '##Long \r\n                                                                                    \r\n ###input \ntest'
+    )
+  )
+
+  expect(root.innerHTML).toMatchInlineSnapshot(`
+    <div>
+      <h2 id="long">
+        Long
+      </h2>
+      <h3 id="input">
+        input
+      </h3>
+      <p>
+        test
+      </p>
+    </div>
+  `)
+})
\ No newline at end of file
diff --git a/index.tsx b/index.tsx
index 185651b0..2d0c4a02 100644
--- a/index.tsx
+++ b/index.tsx
@@ -185,7 +185,7 @@ const BREAK_LINE_R = /^ {2,}\n/
 const BREAK_THEMATIC_R = /^(?:( *[-*_])){3,} *(?:\n *)+\n/
 const CODE_BLOCK_FENCED_R =
   /^(?: {1,3})?(`{3,}|~{3,}) *(\S+)? *([^\n]*?)?\n([\s\S]*?)(?:\1\n?|$)/
-const CODE_BLOCK_R = /^(?: {4}[^\n]+\n*)+(?:\n *)+\n?/
+const CODE_BLOCK_R = /^(?: {4}[^\n]+\n*)+(?:\n *)*\n?/
 const CODE_INLINE_R = /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/
 const CONSECUTIVE_NEWLINE_R = /^(?:\n *)*\n/
 const CR_NEWLINE_R = /\r\n?/g

From 76bbc4ad8c47daff8aaae59c99a6e57b03097fd3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mehmet=20=C3=87al=C4=B1=C5=9Fkan?=
 <49614175+caliskanmehmet@users.noreply.github.com>
Date: Mon, 25 Nov 2024 21:19:10 +0300
Subject: [PATCH 2/2] Improved the test case to reproduce the problem

---
 index.compiler.spec.tsx | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/index.compiler.spec.tsx b/index.compiler.spec.tsx
index 15141dd9..2854b803 100644
--- a/index.compiler.spec.tsx
+++ b/index.compiler.spec.tsx
@@ -4828,20 +4828,21 @@ it('#597 handles script tag with empty content', () => {
 it('#473 handles content with multiple empty spaces without crashing', () => {
   render(
     compiler(
-      '##Long \r\n                                                                                    \r\n ###input \ntest'
+      'Test \r\n                                                                                    \r\n Test'
     )
   )
 
   expect(root.innerHTML).toMatchInlineSnapshot(`
     <div>
-      <h2 id="long">
-        Long
-      </h2>
-      <h3 id="input">
-        input
-      </h3>
       <p>
-        test
+        Test
+      </p>
+      <pre>
+        <code>
+        </code>
+      </pre>
+      <p>
+        Test
       </p>
     </div>
   `)