From: Gregory Brown <gregory.t.brown@...>
Date: 2007-08-07T07:34:40+09:00
Subject: Re: Very weird behaviour of Ruby 1.8.6 with multi-line parenthesis expressions

On 8/6/07, Nicolas Lehuen <nicolas.lehuen@gmail.com> wrote:
> Hi,
>
> I've just lost a few hours on this strange behaviour (bug ?).
> Apparently it is caused by some kind of operator precedence
> thingamagic. My original code was of course much more complicated, so
> finding the problem wasn't easy (I first thought my code was
> buggy...). Here is a piece of minimal code that reproduces the
> problem :
>
> 8<-------------8<-------------8<-------------8<-------------
>
> C:\temp>ver
>
> Microsoft Windows [version 6.0.6000]
>
> C:\temp>ruby -v
> ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]
>
> C:\temp>type bug.rb
> sum1 = 1 + 1 + 1
>
> puts sum1
>
> sum2 = (
>   1
>   + 1
>   + 1

+ is a unary operator.

this parses as:

(
1; +1; +1;
)

If you want 3, do:

1 +
1 +
1

which parses as 1 + 1 + 1