From: Gary Wright <gwtmp01@...>
Date: 2007-12-19T12:00:13+09:00
Subject: Re: String#% bug on Windows?


On Dec 18, 2007, at 8:54 PM, Nobuyoshi Nakada wrote:

> Hi,
>
> At Wed, 19 Dec 2007 03:59:32 +0900,
> Berger, Daniel wrote in [ruby-core:14139]:
>> # test.rb
>> puts "%x" % "0_3_7_7"
>>
>> On Linux the above snippet returns 'ff'. On Windows I get test.rb: 
>> 1:in
>> `%': invalid value for Integer: "0_3_7_7" (ArgumentError)
>
> What are the versions?  Kernel#Integer works more strictly
> recently, underscores are no longer allowed between radix
> prefix and trailing digits.
>
> In this case, preceeding "0" was treated as octal radix prefix,
> however it seems unexpected behavior.


It doesn't seem unexpected to me.  I would expect the following
expressions to all evaluate to the same fixnum:

0_377
"0_377".to_i
Integer("0_377")
0377
"0377".to_i
Integer("0377")

Perhaps an argument can be made that to_i and Integer shouldn't
recognize radix prefixes or underscores but it would seem unexpected
for to_i and Integer to only recognize one or the other.  All or
nothing I say.

Gary Wright