@+ magic variable

[Rafael Garcia-Suarez]

On 15/02/07, Luis Motta Campos <luismottacampos at yahoo.co.uk> wrote:
> > my $str='padding@@@';
> > $str =~ s/@+$//g;
> > print "$str\n";
>
>    Of course not.
>    You're interpolating an (empty) array named @+, that is not
> special, but stills an array.
>    I don't see any reason for perl warnings annoyance.

[rafael at stcosmo ~]$ perl -we '/@x/'
Possible unintended interpolation of @x in string at -e line 1.

(warning issued for undeclared variables, to protect against typos).
But punctuation variables don't fall in this category, they're not
subject to strictures.