Hm. Is that doc quote 5.8.4 specific? Because it works okay in 5.8.9.

This code:

#! perl -slw
use strict;

open PIPE, '-|', q[ c:\\perl32\\bin\\perl.exe -v ] or die $^E;

print "<<<$_>>>" while <PIPE>;

[download]

Produces this output: 

C:\test>\perl32\bin\perl junk99.pl
<<<
>>>
<<<This is perl, v5.8.9 built for MSWin32-x86-multi-thread
>>>
<<<(with 12 registered patches, see perl -V for more detail)
>>>
<<<
>>>
<<<Copyright 1987-2008, Larry Wall
>>>
<<<
>>>
<<<Binary build 826 [290470] provided by ActiveState http://www.Active
+State.com
>>>
<<<Built May 24 2009 09:21:05
>>>
<<<
>>>
<<<Perl may be copied only under the terms of either the Artistic Lice
+nse or the
>>>
<<<GNU General Public License, which may be found in the Perl 5 source
+ kit.
>>>
<<<
>>>
<<<Complete documentation for Perl, including FAQ lists, should be fou
+nd on
>>>
<<<this system using "man perl" or "perldoc perl".  If you have access
+ to the
>>>
<<<Internet, point your browser at http://www.perl.org/, the Perl Home
+ Page.
>>>
<<<
>>>

[download]
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". The enemy of (IT) success is complexity.
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^2: "- |" pipe option doesn't work by BrowserUk
in thread "- |" pipe option doesn't work by Anonymous Monk

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.