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This PR is upstreaming changes in the Seraphis lib here: UkoeHB#39. This header adds a macro
VA_ARGS_COMMAPREFIX
which, when passed__VA_ARGS__
, expands to, __VA_ARGS__
unless the length of__VA_ARGS__
is 0, in which case it expands to nothing. This macro is useful for passing/declaring optional function arguments.