I know that exporting variables/functions is bad style possibly leading to collisions, but I expected it to work.

I have a scenario where I am placing a package (w.pm) in a subdirectory and when doing so the export/import seems to fail.

when I load the package with:

 use w;  # the package lives in one of the directories in @INC

everything works as expected -> exported variables and functions are available in (and pollute) main's namespace.

When I load the package with:  use A::w; # ./A is not in @INC the package loads fine (the BEGIN{} startup message is issued) and I can use variables/functions when specifying the package name with w::, but not without it.

Am I misreading how to use Exporter, @EXPORT, or is my understanding of how to create packages in a folder hierarchy wrong?

Any insight is appreciated.

-Steffen (using v5.8.8)

main:

#!/tool/pandora64/bin/perl -w -I ./

use strict;
use warnings;
use v;       # variables/funcs work without v::, the package code is a
+lmost the same)
#use w;      # This makes variables/funcs work without w::
use A::w;    # this requires w:: to identify the package

sub_in_v();
w::sub_in_w();

$var_in_v = "v-variable";
$w::var_in_w = "w-variable"; # works only because of the w:: when use-
+ing A::w

printf("%s\n", $var_in_v);
printf("%s\n", $w::var_in_w);  # works only because of the w:: when us
+e-ing A::w

print(join("\n", @INC));

1;

[download]
package w: 
package w;
# in ./A
use Data::Dumper;
use Exporter;
our $var_in_w;
our @EXPORT= ('$var_in_w', 'sub_in_w');
our @ISA = qw(Exporter);

sub sub_in_w{
    print("this is from a sub in package SRAM::w!\n");
}

BEGIN{
print('this is w\'s BEGIN, @ISA = ', Dumper @ISA, "\n");
1;
}
END{
    print("w ending now.\n");
}
1;

[download]

In reply to variable import from package fails even though package apparently loads by spoonervt

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