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throw an error if the --fallback syntax is wrong
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@ -71,8 +71,8 @@ void validate(boost::any &v, std::vector<std::string> const &tokens, FallbackMap
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for(std::vector<std::string>::const_iterator it=tokens.begin(); it != tokens.end(); it++)
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{
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int sep = it->find(",");
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if(sep < 1)
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continue;
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if(sep < 1 || sep = it->length()-1)
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throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value);
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std::string key(it->substr(0,sep));
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std::string value(it->substr(sep+1));
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