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-rw-r--r--Master/texmf-dist/source/latex/oberdiek/pdfcol.dtx5
1 files changed, 4 insertions, 1 deletions
diff --git a/Master/texmf-dist/source/latex/oberdiek/pdfcol.dtx b/Master/texmf-dist/source/latex/oberdiek/pdfcol.dtx
index d6a0a5ddecc..d7648d1cae4 100644
--- a/Master/texmf-dist/source/latex/oberdiek/pdfcol.dtx
+++ b/Master/texmf-dist/source/latex/oberdiek/pdfcol.dtx
@@ -152,7 +152,7 @@ and the derived files
%</driver>
% \fi
%
-% \CheckSum{640}
+% \CheckSum{644}
%
% \CharacterTable
% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
@@ -339,6 +339,9 @@ and the derived files
\else
\def\x#1#2[#3]{\endgroup
#2[{#3}]%
+ \ifx#1\@undefined
+ \xdef#1{#3}%
+ \fi
\ifx#1\relax
\xdef#1{#3}%
\fi