From: Simon Strandgaard <qj5nd7l02@...>
Date: 2003-11-19T23:17:16+09:00
Subject: Re: $& write-protected?

On Wed, 19 Nov 2003 23:01:50 +0900, ts wrote:

>>>>>> "S" == Simon Strandgaard <qj5nd7l02@sneakemail.com> writes:
> 
> S> I want my regexp engine to be compatible with Ruby's, therefore I want to
> S> exercise the engine with the Rubicon testsuite. But rubicon uses $& and
> S> $1-$9.  I can substitute all occurencies of $& and $1-$9 in rubicon. 
> 
>  Be carefull with this test : it was designed for the *current* regexp
>  engine, this means, for example, that these tests must be modified for
>  Onigurama. Because Oniguruma will give different results.

I have about 150 testcases which I both test with Ruby's current regexp
engine and against my own engine. So far my engine is fully compatible.

Perhaps I should also run the tests agains Oniguruma.
Do you know if Oniguruma can coexist with Ruby's current regexp engine?


> S> [RCR] remove write-protection of $&, $1-$9, $', $`, $+
> 
>  No need for this : just write an C extension which do this, and use this
>  extension *only* for testing your regexp engine.
> 
>  Nobody, except you, need to modify these variables.

Great, so it *is* possible..  I will look at it tomorrow (C++SWIG).

--
Simon Strandgaard