No, my post shows it being used elsewhere. And here's another: 

$ perl -le'print __PACKAGE__'
main

[download]

You wouldn't expect @time::ISA to mean @1232553153::ISA. Same goes for __PACKAGE__. It's a built-in function like time. 

$ perl -le'print CORE::__PACKAGE__'
main

[download]

Update: I can override it 

$ perl -wle'BEGIN { *CORE::GLOBAL::__PACKAGE__ = sub () { "abc" }; } p
+rint __PACKAGE__'
abc

[download]

but I can't call prototype on it 

$ perl -wle'print prototype "CORE::__PACKAGE__"'
Can't find an opnumber for "__PACKAGE__" at -e line 1.

[download]

so it's not quite the same as other built-ins. That's probably the only difference.

In reply to Re^3: Where is the @ISA array? by ikegami
in thread Where is the @ISA array? by metaperl

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.