From 5f82e6efbdf7352c588a498d3ebd16e115ce3241 Mon Sep 17 00:00:00 2001
From: Erfan Nourbakhsh <erfan@princeton.edu>
Date: Tue, 1 Oct 2024 01:03:37 -0400
Subject: [PATCH] Optimize regex for handling gradient style lookups

---
 .../mermaid/src/diagrams/flowchart/flowRenderer-v3-unified.ts   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/mermaid/src/diagrams/flowchart/flowRenderer-v3-unified.ts b/packages/mermaid/src/diagrams/flowchart/flowRenderer-v3-unified.ts
index 778a6a4b74a..860c3a57154 100644
--- a/packages/mermaid/src/diagrams/flowchart/flowRenderer-v3-unified.ts
+++ b/packages/mermaid/src/diagrams/flowchart/flowRenderer-v3-unified.ts
@@ -101,7 +101,7 @@ export const draw = async function (text: string, id: string, _version: string,
         // Look for all gradient styles, ensuring that nested parentheses due to color functions are handled properly
         const linearGradientStyles = vertex.cssCompiledStyles
           ?.join('')
-          ?.match(/fill\s*:\s*linear-gradient\(([^()]*(\([^()]*\))*[^()]*)+\)/g);
+          ?.match(/fill\s*:\s*linear-gradient\([^()]*?(?:\([^()]*?\)[^()]*)*\)/g);
 
         if (linearGradientStyles) {
           shapeElement.style('fill', null); // Clear any existing fill