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-rw-r--r--tex/context/base/mkiv/syst-aux.mkiv12
1 files changed, 10 insertions, 2 deletions
diff --git a/tex/context/base/mkiv/syst-aux.mkiv b/tex/context/base/mkiv/syst-aux.mkiv
index 49b2ba288..faed87f2b 100644
--- a/tex/context/base/mkiv/syst-aux.mkiv
+++ b/tex/context/base/mkiv/syst-aux.mkiv
@@ -4718,14 +4718,22 @@
\def\syst_helpers_check_if_assignment_else#1=#2#3\_e_o_p_{\if#2@}%
-\unexpanded\def\doifelseassignment#1% expandable
+\unexpanded\def\doifelseassignment#1%
{\expandafter\syst_helpers_check_if_assignment_else\detokenize{#1}=@@\_e_o_p_
\expandafter\secondoftwoarguments
\else
\expandafter\firstoftwoarguments
\fi}
-\let\doifassignmentelse\doifelseassignment
+\unexpanded\def\doifelseassignmentcs#1#2#3%
+ {\expandafter\syst_helpers_check_if_assignment_else\detokenize{#1}=@@\_e_o_p_
+ \expandafter#3%
+ \else
+ \expandafter#2%
+ \fi}
+
+\let\doifassignmentelse \doifelseassignment
+\let\doifassignmentelsecs\doifelseassignmentcs
\newif\ifassignment