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Diffstat (limited to 'tex/context/base/mkxl/core-two.mkxl')
-rw-r--r--tex/context/base/mkxl/core-two.mkxl5
1 files changed, 3 insertions, 2 deletions
diff --git a/tex/context/base/mkxl/core-two.mkxl b/tex/context/base/mkxl/core-two.mkxl
index af48dc7c3..322765a39 100644
--- a/tex/context/base/mkxl/core-two.mkxl
+++ b/tex/context/base/mkxl/core-two.mkxl
@@ -81,8 +81,9 @@
% temp hack: needs a proper \starteverytimeluacode
\setfalse\twopassdatafound
-\let \twopassdata \empty
-\let \twopassdatalist \empty
+
+\mutable\let\twopassdata \empty
+\mutable\let\twopassdatalist\empty
\def\syst_twopass_check % can be delegated to lua once obsolete is gone
{\ifempty\twopassdata