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-rw-r--r--tex/context/base/spac-ali.mkiv4
1 files changed, 4 insertions, 0 deletions
diff --git a/tex/context/base/spac-ali.mkiv b/tex/context/base/spac-ali.mkiv
index 07d588ba7..f90ab4fa9 100644
--- a/tex/context/base/spac-ali.mkiv
+++ b/tex/context/base/spac-ali.mkiv
@@ -167,6 +167,10 @@
\unexpanded\def\autodirvbox#1#{\vbox#1\bgroup\synchronizeinlinedirection\let\next} % maybe also pardir or maybe just a \vbox
\unexpanded\def\autodirvtop#1#{\vtop#1\bgroup\synchronizeinlinedirection\let\next} % maybe also pardir or maybe just a \vtop
+\unexpanded\def\leftorrighthbox{\ifconditional\displaylefttoright\expandafter\lefttorighthbox\else\expandafter\righttolefthbox\fi}
+\unexpanded\def\leftorrightvbox{\ifconditional\displaylefttoright\expandafter\lefttorightvbox\else\expandafter\righttoleftvbox\fi}
+\unexpanded\def\leftorrightvtop{\ifconditional\displaylefttoright\expandafter\lefttorightvtop\else\expandafter\righttoleftvtop\fi}
+
% Tolerance and hyphenation
\ifdefined\lesshyphens \else \let\lesshyphens\relax \fi