Script mode

Programs written in BL can easily act like shell scripts on UNIX systems due to the support of shebang character sequence specified at the first line of the entry file. The -silent-run option passed to the compiler reduces all compiler diagnostic output and executes the main function using the integrated interpreter. No output binary is produced in such a case. The following example can be directly executed in bash.

#!/usr/local/bin/blc -silent-run

main :: fn () s32 {
    print("Hello!!!\n");
    return 0;
}

$ chmod +x main.bl
$ ./main.bl

All command line arguments are forwarded into the executed script and can be accessed via command_line_arguments builtin variable. The first argument contains the script name every time.