From: "Iñaki Baz Castillo" <ibc@...>
Date: 2011-08-22T08:12:31+09:00
Subject: Possble bug in Ruby parser (Fixnum#times within "case" statement)

Hi, I cannot find an explanation for the following issue so I think it's a bug:

-----------------------
def kk

  while case @state

    when :init
      10.times do |index|
        puts "index = #{index}"
      end
      @state = :end
      true

     when :end
       puts "END"

     end
   end

end

@state = :init
kk
-----------------------


Running the above code gives an error:

~# ruby1.9.3 kk.rb

kk.rb:6: syntax error, unexpected keyword_do_cond, expecting keyword_end
      10.times do |index|
                 ^
kk.rb:7: syntax error, unexpected tSTRING_BEG, expecting keyword_do or
'{' or '('
        puts "index = #{index}"
              ^
kk.rb:12: syntax error, unexpected keyword_when, expecting $end
     when :end
         ^


Why???? If I replace:

      10.times do |index|
        puts "index = #{index}"
      end

with:

      10.times { |index|
        puts "index = #{index}"
      }

but of course using "do - end" is valid for Fixnum#times !!
What is happening?

This issue occurs in Ruby 1.8 and 1.9.

Any comment please?



-- 
Iñaki Baz Castillo
<ibc@aliax.net>