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-rw-r--r--Master/texmf-dist/source/latex/thmtools/thm-amsthm.dtx1
1 files changed, 1 insertions, 0 deletions
diff --git a/Master/texmf-dist/source/latex/thmtools/thm-amsthm.dtx b/Master/texmf-dist/source/latex/thmtools/thm-amsthm.dtx
index 7ff3b98249d..52a667a966d 100644
--- a/Master/texmf-dist/source/latex/thmtools/thm-amsthm.dtx
+++ b/Master/texmf-dist/source/latex/thmtools/thm-amsthm.dtx
@@ -125,6 +125,7 @@
\define@key{thmdef}{qed}[\qedsymbol]{%
\thmt@trytwice{}{%
\addtotheorempostheadhook[\thmt@envname]{%
+ \protected@edef\qedsymbol{#1}%
\pushQED{\qed}%
}%
\addtotheoremprefoothook[\thmt@envname]{%