% clang++ main.cpp
main.cpp:8:2: error: no matching function for call to 'parse'
        parse(argc, argv, cli);
        ^~~~~
./clipp.h:5325:1: note: candidate function not viable: no known conversion from 'clipp::parameter' to
      'const clipp::group' for 3rd argument
parse(const int argc, char* argv[], const group& cli, arg_index offset = 1)
^
./clipp.h:5313:1: note: candidate template ignored: deduced conflicting types for parameter 'InputIterator'
      ('int' vs. 'char **')
parse(InputIterator first, InputIterator last, const group& cli)
^
./clipp.h:5281:1: note: candidate function not viable: requires 2 arguments, but 3 were provided
parse(arg_list args, const group& cli)
^
./clipp.h:5294:1: note: candidate function not viable: requires 2 arguments, but 3 were provided
parse(std::initializer_list<const char*> arglist, const group& cli)
^
1 error generated.

% g++ main.cpp                                                                        :(
main.cpp: In function ‘int main(int, char**)’:
main.cpp:8:23: error: no matching function for call to ‘parse(int&, char**&, clipp::parameter&)’
    8 |  parse(argc, argv, cli);
      |                       ^
In file included from main.cpp:2:
clipp.h:5281:1: note: candidate: ‘clipp::parsing_result clipp::parse(clipp::arg_list, const clipp::group&)’
 5281 | parse(arg_list args, const group& cli)
      | ^~~~~
clipp.h:5281:1: note:   candidate expects 2 arguments, 3 provided
clipp.h:5294:1: note: candidate: ‘clipp::parsing_result clipp::parse(std::initializer_list<const char*>, const clipp::group&)’
 5294 | parse(std::initializer_list<const char*> arglist, const group& cli)
      | ^~~~~
clipp.h:5294:1: note:   candidate expects 2 arguments, 3 provided
clipp.h:5313:1: note: candidate: ‘template<class InputIterator> clipp::parsing_result clipp::parse(InputIterator, InputIterator, const clipp::group&)’
 5313 | parse(InputIterator first, InputIterator last, const group& cli)
      | ^~~~~
clipp.h:5313:1: note:   template argument deduction/substitution failed:
main.cpp:8:23: note:   deduced conflicting types for parameter ‘InputIterator’ (‘int’ and ‘char**’)
    8 |  parse(argc, argv, cli);
      |                       ^
In file included from main.cpp:2:
clipp.h:5325:1: note: candidate: ‘clipp::parsing_result clipp::parse(int, char**, const clipp::group&, clipp::arg_index)’
 5325 | parse(const int argc, char* argv[], const group& cli, arg_index offset = 1)
      | ^~~~~
clipp.h:5325:50: note:   no known conversion for argument 3 from ‘clipp::parameter’ to ‘const clipp::group&’
 5325 | parse(const int argc, char* argv[], const group& cli, arg_index offset = 1)
      |                                     ~~~~~~~~~~~~~^~~