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LibCore: Reset getopt's state when starting parse()
This way, a program can use ArgsParser multiple times, potentially with multiple different options.
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@ -49,6 +49,8 @@ void ArgsParser::parse(int argc, char** argv)
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int index_of_found_long_option = -1;
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int index_of_found_long_option = -1;
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optind = 0;
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for (size_t i = 0; i < m_options.size(); i++) {
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for (size_t i = 0; i < m_options.size(); i++) {
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auto& opt = m_options[i];
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auto& opt = m_options[i];
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if (opt.long_name) {
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if (opt.long_name) {
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