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-rw-r--r--Master/texmf-dist/tex/generic/oberdiek/setouterhbox.sty3
1 files changed, 3 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/generic/oberdiek/setouterhbox.sty b/Master/texmf-dist/tex/generic/oberdiek/setouterhbox.sty
index c74c8dff879..e7b68d32742 100644
--- a/Master/texmf-dist/tex/generic/oberdiek/setouterhbox.sty
+++ b/Master/texmf-dist/tex/generic/oberdiek/setouterhbox.sty
@@ -80,6 +80,9 @@
\else
\def\x#1#2[#3]{\endgroup
#2[{#3}]%
+ \ifx#1\@undefined
+ \xdef#1{#3}%
+ \fi
\ifx#1\relax
\xdef#1{#3}%
\fi