From: james@...
Date: 2002-06-04T00:29:42+09:00
Subject: RE: regexp#options in 1.7.2



> -----Original Message-----
> From: Yukihiro Matsumoto [mailto:matz@ruby-lang.org]
> Sent: Monday, June 03, 2002 8:10 AM
> To: ruby-talk ML
> Subject: Re: regexp#options in 1.7.2
> Importance: High
>
>
> Hi,
>
> In message "regexp#options in 1.7.2"
>     on 02/06/03, james@rubyxml.com <james@rubyxml.com> writes:
>
> ...

> |I couldn't find any regexp constants defined for 128.  What is
> this value
> |for?
>
> It's revealing internal optimize flags (128 means "pattern begins with
> exact string").  Should I hide them?

No, this is potentially useful information.

I wonder if Regexp#options should take an optional bit mask parameter.
Then you could query for, or omit, particular bit sets:

MASK_BEGINS_WITH_EXACT = ~128
p  re.options( MASK_BEGINS_WITH_EXACT )  # omit bit at location 8


Thanks,


James
>
> 							matz.
>