Unable to use control flow in macros

[Mm2PL]

It's impossible to use an if or while block inside of a macro, as it results in a compiler error. Simulation or compile doesn't matter, it's broken in both.

Example

macro test
    2 1 < if
        12 print
    end
end

Compile result

$ python porth.py sim borked.porth
Traceback (most recent call last):
  File "porth.py", line 924, in <module>
    program = compile_file_to_program(program_path, include_paths);
  File "porth.py", line 862, in compile_file_to_program
    return compile_tokens_to_program(lex_file(file_path), include_paths)
  File "porth.py", line 709, in compile_tokens_to_program
    block_ip = stack.pop()
IndexError: pop from empty list

Version d7ecaa2

[rexim]

@Mm2PL yep! It's a known issue! Thanks for reporting it, I'll fix it in the near future.

[ap29600]

#45 fixes this, unless @rexim wants to do it on stream.

[rexim]

@Mm2PL I merged the PR. Please check the latest version.