From 2bc26fbdc569fca140bbb4c56eeca708a9739b53 Mon Sep 17 00:00:00 2001
From: James Maes <james@kof22.com>
Date: Fri, 16 Oct 2026 16:11:29 -0500
Subject: [PATCH] fix(publisher): make heading regex linear-time

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 packages/publisher/src/markdown/converter.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/publisher/src/markdown/converter.ts b/packages/publisher/src/markdown/converter.ts
index d9cfaf5..7d79801 100644
--- a/packages/publisher/src/markdown/converter.ts
+++ b/packages/publisher/src/markdown/converter.ts
@@ -49,7 +49,8 @@ export class MarkdownConverter {
       const line = lines[i];
 
       // Heading
-      const headingMatch = line.match(/^(#{1,6})\s+(.+)$/);
+      // `\s+(\S.*)` keeps the separator and the text disjoint, so matching is linear.
+      const headingMatch = line.match(/^(#{1,6})\s+(\S.*)$/);
       if (headingMatch) {
         tokens.push({
           type: 'heading',
-- 
2.54.0