From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-03-01T23:28:52+09:00
Subject: Re: Rubymoticons

2012/3/1 Eric Christopherson <echristopherson@gmail.com>:
> irb should also treat symbols that way -- and not halfway interpret
> them as operators. (I say "halfway" because on the one hand it waits
> for the next line, as it would with a dangling operator; but on the
> other hand, it then just throws away the symbol and evaluates the next
> line as if it stood alone.)

No. It does not discard it; it's simply the effect of syntax. Consider this:

  ruby -e 'p eval(":-; 1")'

There are two expressions evaled here, ":-" and "1".

Now this:

  ruby -e 'p eval(":-\n1")'

Just as above, there are two expressions. IRB *does not strip
newlines*; and when evaling some code, only the result of last
expresion is returned.

The only bug here (or, IMO, a lack of feature) is that IRB does not
parse the code at all; it simply checks if the line ends with an
operator, a dot or a backslash, and in this case does not eval code
immediately, but joins it with next line of input.

-- Matma Rex