Second Update: Aaargh!
Wrong, wrong, wrong (except the genuflection)!

On the other hand (but with a bow and ++ to Marshall's remarks regarding \r, \n and the "$end of string anchor"), I do see the same issue Update: stricken text replaced read OP incorrectly</replace> see an issue, both with perl v 5.8.7 under Linux (Ubuntu) and with perl v 5.8.8 (Build 819) under W2K.

The issue is with the parenthesized ($version). See context.

Simple minded testing

#!/usr/bin/perl
use strict;
use warnings;
#793602

my $line = "Version: 0\r\n";
my $line1 = "Version: 0\r\n";
my $line2 = "Version: 0\r\n";
my $line3 = "Version: 0\r\n";


$line =~ s/\n|\r//g;
print "Line: |$line| ... \n";

$line1 =~ /^Version:\s(\d)$/;
print "Line1: -|$line1|- ... \n";

$line2 =~ /^Version:(\s\d+)$/;
print "Line2 with \\s inside capture: --|$line2|-- ... \n";

my ($version) = $line3 =~ /^Version:\s(\d)$/;
print "Line3 (paren'ed \$version): ---|$version|--- ... \n";

=head OUTPUT
Line: |Version: 0| ...
Line1: -|Version: 0
|- ...
Line2 with \s inside capture: --|Version: 0
|-- ...
Use of uninitialized value in concatenation (.) or string at 793602.pl
+ line 22.
Line3 (paren'ed $version): ---||--- ...

=cut

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In reply to Re: Can't match my regex by ww
in thread Can't match my regex by Saladino

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