[0x5A656578]

pawn Код:

main() {
    // test
    new path[] = "path/to/file/with.periods.ext";
    remove_extension(path);
    printf("path = %s", path);
}

stock delete_extension(path[]) {
    new i = -1, j;
    // Loop until find the last '.'
    while ((j = strfind(path, ".", _, i + 1)) != -1) {
        i = j;
    }
    // Delete .extension 
    strdel(path, i, i + strlen(path[i]));
}