From: Robert Klemme <shortcutter@...>
Date: 2007-08-06T15:32:17+09:00
Subject: Re: Multiple matching with ()*

2007/8/4, Alessandro Re <akirosspower@gmail.com>:
> On 8/2/07, Wolfgang N�dasi-donner <ed.odanow@wonado.de> wrote:
> > irb(main):001:0>
> > "x1A2B3C4Dz".scan(/(?:\G|^(?:x))(x|\d\w|z)(?=(?:\d\w)*(?:z|)$)/)
> > => [["x"], ["1A"], ["2B"], ["3C"], ["4D"], ["z"]]
>
> Wonderful :)
> Thanks!

But this does not seem to work with strings that contain multiple sections:

irb(main):002:0>
"x1A2B3C4Dz1a".scan(/(?:\G|^(?:x))(x|\d\w|z)(?=(?:\d\w)*(?:z|)$)/)
=> []

So it's not suited for a one RX approach and still need two levels of
RX. If that's the case then we have seen simpler solutions for that.
(Btw, one reason why it's so awkward is that there is no lookbehind in
Ruby 1.8 - but this will change.)

Kind regards

robert