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-rw-r--r--tex/context/base/mkiv/math-ini.mkxl1
1 files changed, 1 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/math-ini.mkxl b/tex/context/base/mkiv/math-ini.mkxl
index 672ef04cc..427d79d45 100644
--- a/tex/context/base/mkiv/math-ini.mkxl
+++ b/tex/context/base/mkiv/math-ini.mkxl
@@ -665,6 +665,7 @@
\def\mathcodenumber #1{\the\csname math#1code\endcsname}
\unexpanded\def\mathcodecommand#1{\csname\??mathcodecommand#1\endcsname}
+ \def\mathcodechecked#1{\ifcsname math#1code\endcsname\lastnamedcs\else#1\fi}
% \startlines
% $\mathopnolimits{\rm d}x$