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authorNorbert Preining <norbert@preining.info>2019-10-01 03:01:24 +0000
committerNorbert Preining <norbert@preining.info>2019-10-01 03:01:24 +0000
commit31d84cec65917cfc6ef446f1bf6031cff7c6dc7b (patch)
tree5288bd8601943a9038885a87d93b71b8fbc0b0dc /macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex
parentbbbe8128e7ae9d816a221377dbf5ff3969bb203b (diff)
CTAN sync 201910010301
Diffstat (limited to 'macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex')
-rw-r--r--macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex3
1 files changed, 2 insertions, 1 deletions
diff --git a/macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex b/macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex
index 629d3f89ca..f261611bfb 100644
--- a/macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex
+++ b/macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex
@@ -278,7 +278,8 @@
% #4: argument list ({#2}{#3}...)
\cs_new_protected:Npn \chemmacros_declare_reaction_env:nnnn #1#2#3#4
{
- \exp_args:Nnx \DeclareDocumentEnvironment {#1} { !O{} \prg_replicate:nn {#3+0} {m} }
+ \exp_args:Nnx \DeclareDocumentEnvironment {#1}
+ { \int_compare:nT { #3+0 = 0 } {!} O{} \prg_replicate:nn {#3+0} {m} }
{
\chemmacros_add_reaction_description:n {##1}
\__chemmacros_begin_reaction: