From 613e16998bf1d6e76baad8e171a9ad5d23a790c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <git@maximilian-kessler.de>
Date: Tue, 11 Jan 2022 22:16:31 +0100
Subject: [PATCH] make category definitions protected

---
 src/utils/symbindex.pysty3 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/symbindex.pysty3 b/src/utils/symbindex.pysty3
index 128f729..e0525da 100644
--- a/src/utils/symbindex.pysty3
+++ b/src/utils/symbindex.pysty3
@@ -46,7 +46,7 @@ __HEADER__(Declaring of math symbols with automatic indexing)
           \bool_gset_true:c { used_#2 }
         }
       }
-    \exp_args:Nc\gdef{#2}
+    \expandafter\protected\expandafter\gdef\csname#2\endcsname
       {
         \use:c { symbol_#2: }
       }