preprocessor: fix bug: check whether second string in pair is empty. closes #1469
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2670ca8db0
commit
6255858d21
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@ -1588,7 +1588,7 @@ ModelTree::writeLatexModelFile(const string &basename, ExprNodeOutputType output
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content_output << iteqt->second.first;
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if (!empty(iteqt->second.second))
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if (iteqt->second.second.empty())
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content_output << "= `" << iteqt->second.second << "'";
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wrote_eq_tag = true;
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