Just chomp all data that you read immediately. The following works for me: 
#!/usr/bin/perl
use strict;

while (<DATA>) { #lecture du fichier
    chomp;
    if (/^HI( |\t)*COC/) {
    my $song;
    my $hour_dla;
    
        while (<DATA>) {
            chomp;
            
            if ( /(^-)(song.*)/) {
                $song = $2;
            }
    
            
            if ( /^-chicken.*(\d\d)(\d\d)(\d\d)/) {
                $hour_dla = join(":",$2,$3);
                print "$song;$hour_dla\n";
            }
            
            last if (/^HI.*/)
        }    
    }
}    
__DATA__
HI            COCORICO                                              

-song HELLO
-chicken 250420
-forest
-data data
-data 1

[download]

In reply to Re: display problem by moritz
in thread display problem by steph_bow

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