View difference between Paste ID: 5Bub7cR2 and 88kph0DQ

 #!/usr/bin/perl
 #----------------------------------------
 #
 # http://alterchan.net/b/res/31574.html
 #
 #----------------------------------------
 
 use v5.10;
 use strict;
 use warnings;
 use autodie;
-use threads;
+use Coro;
-use Thread::Semaphore;
+use Coro::LWP;
 use Coro::Semaphore;
 use LWP;
 
 #----------------------------------------
 # Настройки
 
 my $password = ""; # Пароль от любого аккаунта, его блеклист будет очищен
 
 my $board    = "b"; # Доска
 my $pages    = 3;   # Количество сканируемых страниц начиная с 0
 my $thread   = 0;   # Если указано, то сканируется только один тред
 
 my $target   = 0;           # Целевой пост
 my $outfile  = "posts.txt"; # Куда сохранить найденные посты
 
 #----------------------------------------
 
 my $lwp = new LWP::UserAgent;
 $lwp->agent( "Opera/9.80 (X11; Linux i686; U; en) Presto/2.10.289 Version/12.02" );
 $lwp->cookie_jar( {} );
-my $sem = new Thread::Semaphore( 15 );
+
 my $sem = new Coro::Semaphore( 15 );
 
 sub login($) {
    my( $pass ) = @_;
    say "Login";
    my $res = $lwp->post( "http://alterchan.net/uid.php",
       Content_Type => "application/x-www-form-urlencoded",
       Content      => "action=login&pass1=$pass",
    );
    unless( $res->content =~ /Ist Gut/ ) {
       die "Can't login:\n" . $res->content;
    }
 }
 
 sub add_to_blacklist($$) {
    my( $board, $post ) = @_;
    my $res = $lwp->post( "http://alterchan.net/uid.php",
       Content_Type => "application/x-www-form-urlencoded",
       Content      => "action=blacklist&number=$post&board=$board",
    );
    unless( $res->is_success ) {
       die "Can't hide post '$board/$post':\n" . $res->as_string;
    }
 }
 
 sub clear_blacklist() {
    my $res = $lwp->post( "http://alterchan.net/uid.php",
       Content_Type => "application/x-www-form-urlencoded",
       Content      => "action=erase",
    );
    unless( $res->is_success ) {
       die "Can't erase blacklist:\n" . $res->as_string;
    }
 }
 
 sub get_page($$) {
    my( $board, $page ) = @_;
    say "Get page '$board/$page'";
    my $url = "http://alterchan.net/$board/" . ( $page ? "$page.html" : "" );
    my $res = $lwp->get( $url );
    if( $res->is_success ) {
       return $res->content;
    } else {
       die "Can't download page '$board/$page':\n" . $res->as_string;
    }
 }
 
 sub parse_threads($) {
    my( $html ) = @_;
    my @threads = $html =~ /^<div id="thread(\d+).+">/gm;
    if( @threads ) {
       return @threads;
    } else {
       die "No threads found";
    }
 }
 
 sub get_thread($$) {
    my( $board, $thread ) = @_;
    say "Get thread '$board/$thread'";
    my $res = $lwp->get( "http://alterchan.net/$board/res/$thread.html" );
    if( $res->is_success ) {
       return $res->content;
    } else {
       die "Can't download thread '$board/$thread':\n" . $res->as_string;
    }
 }
 
 sub parse_posts($) {
    my( $html ) = @_;
    my %posts = $html =~ m/^<td class="reply" id="reply(\d+)">.*?^<blockquote>(.*?)^<\/blockquote>/gms;
    for( values %posts ) {
       s/^\s+|\s+$//g;
       s/<.*?>//g;
       s/&gt;/>/g;
       s/&quot;/"/g;
    }
    return \%posts;
 }
 
 sub parse_all_posts(@) {
    my( @threads ) = @_;
-   my @workers = map {
+
-      new threads( sub {
+   my @workers;
    for my $thread ( @threads ) {
-         my @ret = ( $_, parse_posts( get_thread( $board, $_ ) ) );
+      push @workers, async {
          $sem->down;
          my @ret = ( $thread, parse_posts( get_thread( $board, $thread ) ) );
-      } );
+
-   } @threads;
+
       };
    }
    for( @workers ) {
       my( $thread, $posts ) = $_->join;
       $threads{$thread} = $posts;
    }
    return \%threads;
 }
 
 sub write_file($$) {
    my( $fname, $data ) = @_;
    open my $fh, ">", $fname;
    if( syswrite( $fh, $data ) != length $data ) {
       warn "File '$fname' written with errors";
    }
 }
 
 #----------------------------------------
 
 login( $password );
 clear_blacklist();
 
 my @all;
 if($thread) {
-   my @workers = map {
+
-      new threads ( sub {
+
    my @workers;
-         my @ret = parse_threads( get_page( $board, $_ ) );
+   for my $page ( 0 .. $pages - 1 ) {
       push @workers, async {
          $sem->down;
-      } );
+         my @ret = parse_threads( get_page( $board, $page ) );
-   } ( 0 .. $pages - 1 );
+
          return @ret;
       };
    }
    push @all, $_->join for @workers;
 }
 
 my $threads = parse_all_posts( @all );
 
 add_to_blacklist( $board, $target );
 my @after = map { keys %$_ } values %{ parse_all_posts( @all ) };
 
 clear_blacklist();
 
 my $text;
 for my $thread ( sort { $a <=> $b } keys %$threads ) {
    for my $post ( sort { $a <=> $b } keys %{ $threads->{$thread} } ) {
       next if $post ~~ @after;
       $text .= "http://alterchan.net/$board/res/$thread.html\n";
       $text .= "Тред $thread, пост $post:\n-----\n$threads->{$thread}->{$post}\n-----\n";
    }
 }
 
 write_file( $outfile, $text );