diff options
Diffstat (limited to 'macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex')
-rw-r--r-- | macros/latex/contrib/chemmacros/chemmacros.module.reactions.code.tex | 3 |
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: |