No, you're thinking of @EXPORT. Names in @EXPORT_OK are exported only if asked for, by convention.

CGI uses its own custom import routine instead of subclassing Exporter, but as far as I know it follows the perl conventions on this.

If sub1() is in @EXPORT, then it is indeed imported to the namespace where use CGI; appears. In that case, the last-defined version is the one which is called (along with a redefinition warning). 

use CGI;
sub sub1 {} # this one overwrites CGI's

[download]
but, 
sub sub1 {}
use CGI;    # CGI's overwrites yours

[download]

After Compline,
Zaxo

In reply to Re^3: Lexical and dynamic scope confusion! by Zaxo
in thread Lexical and dynamic scope confusion! by GoCool

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