From 9cb5f5ed2f3bd69bc6b0cd4c9696346bae4a41a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <git@maximilian-kessler.de>
Date: Sun, 16 Jan 2022 22:41:36 +0100
Subject: [PATCH] add new theorem variant parser command

---
 src/environments/groupthm.pysty3 | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/environments/groupthm.pysty3 b/src/environments/groupthm.pysty3
index 7f86396..c47dee9 100644
--- a/src/environments/groupthm.pysty3
+++ b/src/environments/groupthm.pysty3
@@ -348,6 +348,23 @@ __HEADER__(Grouping theorems for easier customization.)
   }
 }
 
+\cs_new:Npn \new_theorem_variant_parser:nnn #1 #2 #3
+{
+  \NewDocumentEnvironment{#1}{#2}
+  {
+    \clist_clear:N \l_groupthm_groups_clist
+    #3
+    \__sort_group_names:
+    \begin{__#1__groups_\clist_use:Nn \l_groupthm_groups_clist{_}}
+  }
+  {
+    \clist_clear:N \l_groupthm_groups_clist
+    #3
+    \__sort_group_names:
+    \end{__#1__groups_\clist_use:Nn \l_groupthm_groups_clist{_}}
+  }
+}
+
 % envname, name, thmtools
 \cs_new:Npn \declare_theorem_variants:nnn #1 #2 #3 
 {