No way to turn off redefine warning in alias()

[schwern]

Because it is turned on lexically inside perl5i there is no way to quiet the "subroutine redefined" warning inside alias short of turning off all warnings with -X.

$ perl5i -le 'no warnings; sub foo { 42 }  sub { 23 }->alias("foo")'
Subroutine main::foo redefined at /Users/schwern/perl5/perlbrew/perls/perl-v5.12.2/lib/site_perl/5.12.2/perl5i/2/UNIVERSAL.pm line 21.

The simple fix would be to turn off that warning inside alias and assume the user meant to do that.

Thoughts?

[doherty]

Is possible to make that warning come from the right place? I'm not sure how you catch a warning.

Patch done the easy way to follow shortly.

[schwern]

Fixed by #191. Simply silencing redefine warnings when aliasing.