From: Mauricio Fernandez <mfp@...>
Date: 2005-08-22T07:51:31+09:00
Subject: Re: [BUG] bug in variable assignment

On Wed, Aug 10, 2005 at 06:38:19PM +0900, Mauricio Fern�ndez wrote:
> On Wed, Aug 10, 2005 at 10:40:15AM +0900, Yukihiro Matsumoto wrote:
> > Instead we should fix optional arguments and rest arguments NOT to
> > modify outside variables.
> 
> I see, I picked the wrong semantics.
> The above should also apply to block arguments then.
> 
> $ ./ruby -ve "b=1; ->(&b){}.call; p b"
> ruby 1.9.0 (2005-08-10) [i686-linux]
> nil

Maybe not?

> diff -p -u -r1.402 parse.y
> --- parse.y	10 Aug 2005 01:39:23 -0000	1.402
> +++ parse.y	10 Aug 2005 09:18:04 -0000
[...]
> diff -p -u -r1.1 test_lambda.rb
> --- test/ruby/test_lambda.rb	8 Aug 2005 23:24:29 -0000	1.1
> +++ test/ruby/test_lambda.rb	10 Aug 2005 09:18:04 -0000
[...]
> $ ./ruby -we "b=1; ->(&b){}.call; p b"
> -e:1: warning: shadowing outer local variable - b
> 1
> $ ./ruby -w test/ruby/test_lambda.rb
> test/ruby/test_lambda.rb:40: warning: shadowing outer local variable - b
> test/ruby/test_lambda.rb:58: warning: shadowing outer local variable - a
> test/ruby/test_lambda.rb:58: warning: shadowing outer local variable - b
> test/ruby/test_lambda.rb:58: warning: shadowing outer local variable - c
> test/ruby/test_lambda.rb:58: warning: shadowing outer local variable - d
> test/ruby/test_lambda.rb:58: warning: shadowing outer local variable - e
> Loaded suite test/ruby/test_lambda
> Started
> .......
> Finished in 0.008198 seconds.
> 
> 7 tests, 26 assertions, 0 failures, 0 errors

-- 
Mauricio Fernandez