I originally posted this to my use.perl journal, but once again, I realized some monks might enjoy this.

Late at night, lots of coding and a little test program confused me for a moment until I looked at it again and almost laughed myself silly. I needed to test that I could read individual records in a file. The records are separated by a lone dot "." appearing by itself on a line. My intention was to open the file, read in individual records, remove that trailing dot and visually inspect the records one by one. Spot the bug:

    #!/usr/bin/perl

    use strict;
    use warnings;

    my $file = shift || die "No file, dummy!";
    open FH, "<", $file or die "Could not open ($file) for reading: $!
+";
    local $/ = "\n.\n";

    while (defined (my $record = <FH>)) {
        chomp $record;
        print $record;
        <STDIN>;
    }

[download]

If you post the answer, do so as a spoiler, please.

Cheers,
Ovid

New address of my CGI Course.

In reply to Spot the Bug by Ovid

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.