Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

You've commented out an essential statement :)

$_[0]=$handle unless defined $_[0]; # pass up to caller

This sets the $fh in open my $fh, ...  Without it, $fh won't be the handle created in *CORE::GLOBAL::open.

Putting this near the end of that routine should suffice, but if you want the overridden open() to work for other forms too (not only 3-args open with lexical file handle), you should also re-enable the qualify_to_ref(...), i.e. the routine should then look like

*CORE::GLOBAL::open=sub (*;$@) { use Symbol(); my $handle; if (defined $_[0]) { $handle = Symbol::qualify_to_ref($_[0], scalar caller); } if (@_ == 1) { CORE::open $handle or warn $! and return 0; } elsif (@_ == 2) { CORE::open $handle, $_[1] or warn $! and return 0; } elsif (@_ == 3) { if (defined $_[2]) { CORE::open $handle, $_[1], $_[2] or warn $! and return 0; } else { CORE::open $handle, $_[1], undef # special case or warn $! and return 0; }; } else { CORE::open $handle, $_[1], $_[2], @_[3..$#_] or warn $! and return 0; }; $_[0]=$handle unless defined $_[0]; # pass up to caller tie *$handle,"TieInput",*$handle; };

With this change, I get the following output:

$ ./953722.pl opening in1.txt: TieInput: $_s = \'in1 A '; $s = \'in1 A '; at ./953722.pl line 107, <$In> line 1. TieInput: @_a = ( 'in1 B ', 'in1 C ' ); @a = ( 'in1 B ', 'in1 C ' ); at ./953722.pl line 109, <$In> line 3. opening in1.txt and in2.txt: TieInput: $_s = \'in1 A '; $s = \'in1 A '; at ./953722.pl line 118, <$In> line 1. TieInput: $_s = \'in2 A '; $s = \'in2 A '; at ./953722.pl line 120, <$In> line 1. TieInput: @_a = ( 'in1 B ', 'in1 C ' ); @a = ( 'in1 B ', 'in1 C ' ); at ./953722.pl line 122, <$In> line 3. TieInput: @_a = ( 'in2 B ', 'in2 C ' ); @a = ( 'in2 B ', 'in2 C ' ); at ./953722.pl line 124, <$In> line 3.

In reply to Re: Implicitly file tying ... by Eliya
in thread Implicitly file tying ... by clueless newbie

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others scrutinizing the Monastery: (6)
    As of 2014-08-02 06:07 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Who would be the most fun to work for?















      Results (55 votes), past polls