https://stackoverflow.com/questions/46274854

msys2_path_conv_session.txt

$ cat test.c
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char ** argv)
{
    for(int i = 0; i < argc; i ++)
    {
        printf("%d = %s\n", i, argv[i]);
    }
    printf("PYTHONPATH = %s\n", getenv("PYTHONPATH"));
    return 0;
}

$ TEST_DIR=./

$ PYTHONPATH="${TEST_DIR}input:${TEST_DIR}"

$ export PYTHONPATH

$ gcc test.c -o test_args

$ ./test_args ./:./input
0 = C:\Users\David\Documents\scraps\test_c_args\test_args.exe
1 = .\;.\input
PYTHONPATH = .\input;.\