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-rw-r--r--tex/context/base/mkiv/math-ini.mkiv15
1 files changed, 15 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/math-ini.mkiv b/tex/context/base/mkiv/math-ini.mkiv
index 38bff5afe..bd8a28762 100644
--- a/tex/context/base/mkiv/math-ini.mkiv
+++ b/tex/context/base/mkiv/math-ini.mkiv
@@ -2462,6 +2462,21 @@
\setupmathematics
[\s!italics=3] % for the moment only this one makes sense .. still experimental
+%D For special purposed we set this one:
+
+\installcorenamespace{mathrules}
+
+\unexpanded\def\enablemathrules{\global\letvalue{\??mathrules\fontclass}\plusone}
+
+\appendtoks
+ \mathrulesmode\ifcsname\??mathrules\fontclass\endcsname
+ \lastnamedcs
+ \else
+ \zerocount
+ \fi
+ \mathrulesfam\fam\textstyle
+\to \everymathematics
+
\protect \endinput
% % not used (yet)