[Dylan16807]

The difficulty isn't `unless(x) {}`, it's `{} unless(x)` and `{} if(x)`.

Except you also don't have the brackets to keep things organized.

[tripleo1]

Do you mean semicolons and whitespace?

[Dylan16807]

No, I mean that in the examples of difficult to parse lines there are no {} anywhere and no () on the condition.

  def save = File.write(name, self.to_yaml) unless invalid?

and you could also have

  def save = File.write(name, self.to_yaml) if valid?

If you had to bracket the expression that postfix if/unless applies to, it would be significantly easier to parse.