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aa7b0a697229305f12d89ba3f17b4ce9f909519d
Indeed when some parameter are BOOST_PP_EMPTY the last parameter is accessed correctly but results in a compilation error which doesn't stop some compiler (e.g. g++) to go through the preprocessing pass and still compile the binary correctly. But to avoid the error message I used a workaround which behaves better. I preferred factoring it out to make clear that there are some reason why this element is strangely accessed.
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Boost.org fusion module
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