> Is it still a global in Perl 6?
It's not even global in perl5.10. perldoc says:
As of release 5 of Perl, assignment to $[ is
treated as a compiler directive, and cannot
influence the behavior of any other file. (That's
why you can only assign compile-time constants to
it.) Its use is highly discouraged.
Note that, unlike other compile-time directives
(such as strict), assignment to $[ can be seen
from outer lexical scopes in the same file.
However, you can use local() on it to strictly
bind its value to a lexical block.
perl6's S28 "Special Names [DRAFT]" says under "Perl5 to Perl6 special
variable translation":
$[ - This feature has been removed
