1 files changed, 39 insertions, 0 deletions
diff --git a/tex/context/base/mkxl/math-dif.mkxl b/tex/context/base/mkxl/math-dif.mkxl
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index 000000000..5cd65a80f
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+++ b/tex/context/base/mkxl/math-dif.mkxl
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+%D \module
+%D   [       file=math-dif,
+%D        version=2022.05.31, % moved code
+%D          title=\CONTEXT\ Math Macros,
+%D       subtitle=Differentials,
+%D         author=Hans Hagen,
+%D           date=\currentdate,
+%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\writestatus{loading}{ConTeXt Math Macros / Differentials}
+
+\unprotect
+
+\pushoverloadmode
+
+    % For new times sake:
+
+    \let\normal_math_dd\dd
+
+    \def\c!differentiald{differentiald} % for now
+
+    \def\upright_math_dd{\mathatom \s!unpack \mathdifferentialcode{\mathupright d}}
+
+    \permanent\protected\def\dd
+      {\ifcstok{\mathematicsparameter\c!differentiald}\s!upright
+         \upright_math_dd
+       \else
+         \normal_math_dd
+       \fi}
+
+  % \setupmathematics[differentiald=upright]
+
+\popoverloadmode
+
+\protect