We went through using C++ types in the recent past on this mailing list.   Points for discussion were:  - Possibly high overhead for long command lines - either time or space overhead.  - IIRC some platforms allow to modify the parameters or environment variables, which is actively used by some frameworks. Would this be supported by the C++ types?   -----Ursprüngliche Nachricht----- Von:Hans Åberg via Std-Proposals <std-proposals_at_[hidden]> Gesendet:Mi 23.07.2025 14:49 Betreff:Re: [std-proposals] D3803R0 More standard forms of main An:std-proposals_at_[hidden]; CC:Hans Åberg <haberg_1_at_[hidden]>; The prototype should probably be int main(const std::vector<std::string>& arg, const std::map<std::string, std::string>& env); so that one gets the environmental variables sorted (ordering is not specified on POSIX). (There is a lot of overhead with std::unordered_map for small tables.) I also see the primary reason for including it is that one can program with C++ types, which are more secure. And one does not need to worry about what exactly the OS is doing.