No problems :) All I did was grok the symbol table for the name of the glob, whereas Symbol's qualify_to_ref simply uses perl's symbolic lookup 
use strict;

{
  package Foo;

  use warnings;
  use warnings::register;

  sub foo { print "Foo!\n" };

  sub import {
    my $cur  = shift;
    my $dest = caller;

    for my $g (grep $cur->can($_),  @_) {
      warnings::warnif("sub '$g' already exists in $dest") and next
        if $dest->can($g);

      my($dest, $src) = map qualify_to_ref("$_\::$g"), $dest, $cur;
      *$dest = *$src;
    }
  }

  # This is what we need from Symbol to provide the qualify_to_ref fun
+ction

  my %global = map {$_ => 1} qw(ARGV ARGVOUT ENV INC SIG STDERR STDIN 
+STDOUT);

  sub qualify ($;$) {
      my ($name) = @_;
      if (!ref($name) && index($name, '::') == -1 && index($name, "'")
+ == -1) {
        my $pkg;
        # Global names: special character, "^x", or other. 
        if ($name =~ /^([^a-z])|(\^[a-z])$/i || $global{$name}) {
            $pkg = "main";
        }
        else {
            $pkg = (@_ > 1) ? $_[1] : caller;
        }
        $name = $pkg . "::" . $name;
      }
      $name;
  }

  sub qualify_to_ref ($;$) {
    my @pkgs = split '::', qualify $_[0], @_ > 1 ? $_[1] : caller;
    my $tbl  = \%main::;

    $tbl = $tbl->{"$_\::"}
      for @pkgs[0 .. $#pkgs - 1];

    return \$tbl->{$pkgs[-1]};
  }
}

Foo->import('foo');
foo();

__output__

Foo!

[download]
HTH

_________
broquaint

In reply to Re^7: Can't Reference a Sub by Variable when using Strict by broquaint
in thread Can't Reference a Sub by Variable when using Strict by Dru

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