From 8f864361a909f42ec2522eb4b6f1bb934b8e51e7 Mon Sep 17 00:00:00 2001
From: Ulrike Fischer <fischer@troubleshooting-tex.de>
Date: Sun, 9 Feb 2025 22:58:59 +0100
Subject: [PATCH] provide missing socket

---
 luamml.dtx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/luamml.dtx b/luamml.dtx
index 3426b45..a5579e0 100644
--- a/luamml.dtx
+++ b/luamml.dtx
@@ -771,6 +771,14 @@
 % This should only be done for specific environments, we define
 % a constant to test: 
 %    \begin{macrocode}
+\str_if_exist:cF { l__socket_tagsupport/math/luamml/mtable/tag/begin_plug_str }
+ {
+   \NewSocket{tagsupport/math/display/tag/begin}{0}
+   \NewSocket{tagsupport/math/display/tag/end}{0}
+ }
+%    \end{macrocode}
+%
+%    \begin{macrocode}
 %<*luatex>
 \clist_map_inline:nn 
   {