Hi Yasu,
On Dec 2, 2010, at 9:37 PM, Yasu Imao wrote:
> Hi Laurent,
>
> I filed a ticket on String#gsub performance.
Thanks :)
> While I was playing with regex, I noticed another difference(?) between Ruby
> 1.8.7 and MacRuby.
>
> In Ruby Regexp class, fixnums assigned to Regexp.new options are different
> with Ruby 1.8.7 and with MacRuby
>
> Ruby 1.8.7
>
> p Regexp::IGNORECASE => 1
> p Regexp::MULTILINE => 4
> p Regexp::EXTENDED => 2
>
> MacRuby
>
> p Regexp::IGNORECASE => 2
> p Regexp::MULTILINE => 32
> p Regexp::EXTENDED => 4
>
> Is this because of the difference between Ruby 1.8 and Ruby 1.9 or between
> Oniguruma and ICU? Or was there a decision to assign different fixnums to
> these?
It's actually an implementation detail so far. We can eventually make sure the
fixnum values of these constants are the same as CRuby (if you file a ticket we
will fix that for 0.8). I think that users should use the constants and not the
fixnum values directly in their code, though.
Laurent
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