From 02409f467a6523c3b4d1d4abd2b832c1acf37a84 Mon Sep 17 00:00:00 2001
From: d-buchmann <buchmann@ticmed.de>
Date: Thu, 3 Jul 2025 08:37:14 +0200
Subject: [PATCH] Only escape previously unescaped percentage signs

---
 src/Entity/Parameters/AbstractParameter.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Entity/Parameters/AbstractParameter.php b/src/Entity/Parameters/AbstractParameter.php
index c77707d5..9fa90c49 100644
--- a/src/Entity/Parameters/AbstractParameter.php
+++ b/src/Entity/Parameters/AbstractParameter.php
@@ -450,7 +450,7 @@ abstract class AbstractParameter extends AbstractNamedDBElement implements Uniqu
                 $unit = $this->unit;
             } else {
                 //Escape the percentage sign for convenience (as latex uses it as comment and it is often used in units)
-                $escaped = preg_replace('/(\%)/', "\\\\$1", $this->unit);
+                $escaped = preg_replace('/([^\\\\]?%)/', "\\\\$1", $this->unit);
 
                 $unit = '$\mathrm{'.$escaped.'}$';
             }