From: James Gray <james@...>
Date: 2009-04-15T01:12:59+09:00
Subject: [ruby-core:23205] Re: Regexp Encoding

On Apr 14, 2009, at 10:12 AM, NARUSE, Yui wrote:

> James Gray wrote:
>> Can you explain what the magic 16 means here please?
>
> irb(main):005:0> Regexp::IGNORECASE
> => 1
> irb(main):006:0> Regexp::EXTENDED
> => 2
> irb(main):007:0> Regexp::MULTILINE
> => 4
> irb(main):008:0> Regexp::FIXEDENCODING
> => 16
>
> Regexp::FIXEDENCODING is a constant for specifying regexp option,  
> like Regexp::IGNORECASE, Regexp::EXTENDED and Regexp::MULTILINE.  So  
> magic 16 has no special meanings. This means only the value which is  
> same as ARG_ENCODING_FIXED (in re.c). This value may differ on other  
> implementations.

I understand now.  Thank you very much for the explanation.

James Edward Gray II