----- Original Message ----- 
From: "Bill Luebkert" <dbecoll@[...].com> 
To: "Stanislaw Romanski" <s.romanski@[...].pl> 
Cc: <activeperl@[...].com> 
Sent: Tuesday, June 09, 2009 9:41 AM
Subject: Re: s/ / /; - doing harm ?


>  Stanislaw Romanski wrote:
> > Hello,
> >  
> > Please, consider the following short script.
> > #-----------------------------------------------------
> > $_ = '';
> >  
> >     s// /;      ## if any of these two lines is commented out,
> >     s/ / /;     ## the printed result wil be ok, i.e. '= =' WHY ?
> >  
> > $_ = '';
> > s// /;
> > print "=$_=\n";         ## prints incorrect '=='
> > #-----------------------------------------------------
> >  
> > This was tested on Win'XT ActivePerl 5.8.8. and 5.8.9.
> >  
> > What is wrong ?
>  
>  If you check the perlop pod under s///, you should find this:
>    "If the pattern evaluates to the empty string, the last
>    successfully executed regular expression is used instead."
> 

Hello Bill,

Thanks for (en)lightning answer.
You saved a few hours of my frustration ;-)

Stanislaw Romanski
_______________________________________________
ActivePerl mailing list
ActivePerl@[...].com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs