hello,

I stumbled on a weird regex thingie I can't explain.

use strict;
use File::Find;

my $path = "/somwhere/to";

find (sub {
    return unless -f;# only files
    &followup($File::Find::name);
    }, $path);

sub followup {
    my $contents = slurp($_[0]);
    if ( $contents =~ /line3/g ) {
        if ( $contents =~ /(line2-)(\w*)/g
         print $2;
        }
     }

sub slurp {
    local $/ = undef;
    local *X;
    open X, $_[0] or die "Can't open $_[0]: $!";
    my $slurp = <X>;
    close X or die "Can't close $_[0]: $!";
    $slurp;
}

[download]
How the file looks like:

line1-11
line2-12
line3-13

And do u know what the $2 doesn't get printed...
Cos line 2 doesn't get found in me regex. Can someone explain this?



--
My opinions may have changed,
but not the fact that I am right

In reply to weird regex problem by toadi

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.