Zaxo,
The body of an lvalue sub doesn't get executed when it is used as an lvalue.

Not sure if that was the original behavior back in 1999 when they were first introduced but newer versions certainly disagree with you: 

my %foo;
get_set( 'foo' ) = 42;
print get_set( 'foo' );

sub get_set :lvalue {
    my $key = shift;
    print "key is $key\n";
    my $junk;
    $key eq 'foo' ? $foo{$key} : $junk;
}
__END__
key is foo
key is foo
42

[download]
...You can retrieve it with $foo->get_set($bad_key)

Where $bad_key is any and all bad keys. This is why one of the desired features would be to determine if it was in assignment or not.

Cheers - L~R

In reply to Re^2: Experimenting with Lvalue Subs by Limbic~Region
in thread Experimenting with Lvalue Subs by Limbic~Region

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