Instead this ```for(std::size_t TargetIndex = gli...

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[elect]

Instead this

for(std::size_t TargetIndex = gli::TARGET_FIRST; TargetIndex <= gli::TARGET_LAST; ++TargetIndex)
		for(std::size_t FormatIndex = gli::FORMAT_FIRST; FormatIndex <= gli::FORMAT_LAST; ++FormatIndex)
		{
			gli::format const Format = static_cast<gli::format>(FormatIndex);
			gli::target const Target = static_cast<gli::target>(TargetIndex);

I can simply

for (target in TARGET_FIRST..TARGET_LAST)
    for (format in FORMAT_FIRST..FORMAT_LAST)