From: Raul Parolari <raulparolari@...>
Date: 2009-12-01T14:53:56+09:00
Subject: Re: Splat array with 1 value in Ruby 1.9 vs Ruby 1.8

[ Sorry for the horrible indentation. I repeat the text renouncing to 
align the expressions ]

In porting some automation code from 1.8.7 to 1.9.1, I find that in ruby 
1.8 the following worked (real code is unpacking binary strings and 
assigning variables, but I simplify for clarity):

  var1  = *[ val1 ]   # => var1 = val1

  var1, var2, varn = *[ val1, val2, valn ]

(I know that the splat is not necessary in the second case, but this 
allowed the code to be generated in the same way, regardless of array 
size).

With Ruby 1.9.1, instead, this happens:

   var1  = *[ val1 ]   # => var1 = [ val1 ]  (!)

   var1, var2, varn = *[ val1, val2, valn ]

Of course, this can be handled by generating code that checks the array 
size. But I am curious on this behavior of splat when the array contains 
one element (I read about the features of splat in 1.9, but they seem to 
have nothing to do with this). Does anyone know if it is a bug or 
intentional?

Thanks
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