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-rw-r--r--tex/context/base/mkxl/anch-tab.mkxl7
1 files changed, 6 insertions, 1 deletions
diff --git a/tex/context/base/mkxl/anch-tab.mkxl b/tex/context/base/mkxl/anch-tab.mkxl
index 48e4ae4cb..6783b1314 100644
--- a/tex/context/base/mkxl/anch-tab.mkxl
+++ b/tex/context/base/mkxl/anch-tab.mkxl
@@ -224,7 +224,12 @@
\glet\anch_tabulate_flush_epos\relax
\to \everytabulate
-%D In order to prevent potential clashes with abbreviations, postpone the mapping.
+%D In order to prevent potential clashes with abbreviations, postpone the mapping and
+%D make them mutable.
+
+\mutable\let\GSC\empty
+\mutable\let\GFC\empty
+\mutable\let\GTC\empty
\appendtoks
\enforced\let\GSC\tbGSC