From 7fe4092d8e56e2db9f854848425a2101772546b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <git@maximilian-kessler.de>
Date: Thu, 3 Feb 2022 14:26:14 +0100
Subject: [PATCH] groupthm: speedup caching

    replacing # in cached expressions only
    when necessary speeds up usage
---
 src/environments/groupthm/groupthm.dtx | 33 +++++++++++++++++---------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/src/environments/groupthm/groupthm.dtx b/src/environments/groupthm/groupthm.dtx
index 282bca6..943b9e9 100644
--- a/src/environments/groupthm/groupthm.dtx
+++ b/src/environments/groupthm/groupthm.dtx
@@ -2616,7 +2616,7 @@
 %    Cache this definition for re-runs of \LaTeX.
 % 
 %    \begin{macrocode}
-    \@@_cache:n
+    \@@_cache_slow:n
       {
         \csname @@_define_family_options:nnnn \endcsname { #1 } { #2 } { #3 } { #4 }
       }
@@ -2864,15 +2864,26 @@
 %       for details.
 %
 %    \begin{macrocode}
-    \cs_new:Npn \@@_cache:n #1
-      {
-        \tl_set:Nn \l_tmpa_tl
-          {
-            { #1 }
-          }
-        \regex_replace_all:nnN { \cP\# } { \cO\# } \l_tmpa_tl
-        \@@_cache_auxfile:V \l_tmpa_tl
-      }
+    \cs_set_eq:NN \@@_cache:n \@@_cache_auxfile:n
+%    \end{macrocode}
+% \end{macro}
+% 
+% 
+%
+% \begin{macro}{\@@_cache_slow:n}
+%		 
+%     
+%
+%    \begin{macrocode}
+  \cs_new:Npn \@@_cache_slow:n #1
+    {
+      \tl_set:Nn \l_tmpa_tl
+        {
+          { #1 }
+        }
+      \regex_replace_all:nnN { \cP\# } { \cO\# } \l_tmpa_tl
+      \@@_cache_auxfile:V \l_tmpa_tl
+    }
 %    \end{macrocode}
 % \end{macro}
 % 
@@ -2889,7 +2900,7 @@
             \tl_use:N \g_@@_lazy_document_tl
           }
           {
-              \cs_show:N \g_@@_lazy_auxfile_tl
+            \exp_args:NNV \iow_now:Nn \l_my_iow \g_@@_lazy_auxfile_tl
               \benchmark_once:n
                 {
                   \tl_use:N \g_@@_lazy_auxfile_tl