Comment by dchichkov

I'm not sure it is that concise. Just look at the code that you've given. What is it actually doing? How much of it is the juicy part and how much is the language clutter? To me, it feels like in terms of the actual functionality this code does not do that much. Skips the text before first "+++". In more concise languages that whole piece would look like a single line:

    env.lines = [line for line in env.lines if not line.startswith("+++")]

And just look at this:

    when String.length line > 4 && String.sub line 0 3 = "+++"

Really? Specifying numbers like that in the code? And are we really going to alloc an object here? Wow. Wouldn't anyone prefer to use something like:

    line.startswith("+++") ?

edit: my code doesn't implement the exact same functionality. I've only attempted to give a feel/look of the code, not rewrite it. it looks like the original code returns the lines after the '+++' lines, but I can not tell for sure, as the header/modified function implementations are not given.