On what basis are you claiming this is "perfectly legal"
On the basis that it parses correctly and runs correctly without so much as a peep from strict or warnings. I'd say that's a pretty solid basis.
I've just gone through the Camel and your referenced pages and find nothing to support this claim.
Just because it isn't in the Camel doesn't mean that it's not in perl, it just means that it is so obscure it was left out of the Camel for the safety and sanity of perl programmers the world over ;)
HTH

_________
broquaint

In reply to Re: (Re:)+ variable function thingy by broquaint
in thread variable function thingy by nujersedvl

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.