use strict;
	use warnings;
	
	our $VERSION = '1.8'; # 63feb35d8b0a8b6
	our %IRSSI = (
	    authors     => 'Nei',
	    contact     => 'Nei @ anti@conference.jabber.teamidiot.de',
	    url         => "http://anti.teamidiot.de/",
	    name        => 'adv_windowlist',
	    description => 'Adds a permanent advanced window list on the right or in a status bar.',
	    sbitems     => 'awl_shared',
	    license     => 'GNU GPLv2 or later',
	   );
	
	# UPGRADE NOTE
	# ============
	# for users of 0.7 or earlier series, please note that appearance
	# settings have moved to /format, i.e. inside your theme!
	# the fifo (screen) has been replaced by an external viewer script
	
	# Usage
	# =====
	# copy the script to ~/.irssi/scripts/
	#
	# In irssi:
	#
	#		/run adv_windowlist
	#
	# In your shell (for example a tmux split):
	#
	#		perl ~/.irssi/scripts/adv_windowlist.pl
	#
	# To use sbar mode instead:
	#
	#		/toggle awl_viewer
	#
	# Hint: to get rid of the old [Act:] display
	#     /statusbar window remove act
	#
	# to get it back:
	#     /statusbar window add -after lag -priority 10 act
	
	# Options
	# =======
	# formats can be cleared with /format -delete
	#
	# /format awl_display_(no)key(_active|_visible) <string>
	# * string : Format String for one window. The following $'s are expanded:
	#     $C : Name
	#     $N : Number of the Window
	#     $Q : meta-Keymap
	#     $H : Start hilighting
	#     $S : Stop hilighting
	#         /+++++++++++++++++++++++++++++++++,
	#        | ****  I M P O R T A N T :  ****  |
	#        |                                  |
	#        | don't forget  to use  $S  if you |
	#        | used $H before!                  |
	#        |                                  |
	#        '+++++++++++++++++++++++++++++++++/
	#   key     : a key binding that goes to this window could be detected in /bind
	#   nokey   : no such key binding was detected
	#   active  : window would receive the input you are currently typing
	#   visible : window is also visible on screen but not active (a split window)
	#
	# /format awl_name_display <string>
	# * string : Format String for window names
	#     $0 : name as formatted by the settings
	#
	# /format awl_display_header <string>
	# * string : Format String for this header line. The following $'s are expanded:
	#     $C : network tag
	#
	# /format awl_separator(2) <string>
	# * string : Character to use between the channel entries
	# variant 2 can be used for alternating separators (only in status bar
	# without block display)
	#
	# /format awl_abbrev_chars <string>
	# * string : Character to use when shortening long names. The second character
	#   will be used if two blocks need to be filled.
	#
	# /format awl_title <string>
	# * string : Text to display in the title string or title bar
	#
	# /format awl_viewer_item_bg <string>
	# * string : Format String specifying the viewer's item background colour
	#
	# /set awl_prefer_name <ON|OFF>
	# * this setting decides whether awl will use the active_name (OFF) or the
	#   window name as the name/caption in awl_display_*.
	#   That way you can rename windows using /window name myownname.
	#
	# /set awl_hide_empty <num>
	# * if visible windows without items should be hidden from the window list
	# set it to 0 to show all windows
	#           1 to hide visible windows without items (negative exempt
	#           active window)
	#
	# /set awl_detach <list>
	# * list of windows that should be hidden from the window list. you
	#   can also use /awl detach and /awl attach to manage this
	#   setting. an optional data_level can be specified with ",num"
	#
	# /set awl_detach_data <num>
	# * num : hide the detached window if its data_level is below num
	#
	# /set awl_detach_aht <ON|OFF>
	# * if enabled, also detach all windows listed in the
	#   activity_hide_targets setting
	#
	# /set awl_hide_data <num>
	# * num : hide the window if its data_level is below num
	# set it to 0 to basically disable this feature,
	#           1 if you don't want windows without activity to be shown
	#           2 to show only those windows with channel text or hilight
	#           3 to show only windows with hilight (negative exempt active window)
	#
	# /set awl_hide_name_data <num>
	# * num : hide the name of the window if its data_level is below num
	#   (only works in status bar without block display)
	# you will want to change your formats to add $H...$S around $Q or $N
	# if you plan to use this
	#
	# /set awl_maxlines <num>
	# * num : number of lines to use for the window list (0 to disable, negative
	#   lock)
	#
	# /set awl_maxcolumns <num>
	# * num : number of columns to use for the window list when using the
	#   tmux integration (0 to disable)
	#
	# /set awl_block <num>
	# * num : width of a column in viewer mode (negative values = block
	#   display in status bar mode)
	#         /+++++++++++++++++++++++++++++++++,
	#        | ******  W A R N I N G !  ******  |
	#        |                                  |
	#        | If  your  block  display  looks  |
	#        | DISTORTED,  you need to add the  |
	#        | following  line to your  .theme  |
	#        | file under                       |
	#        |     abstracts = {             :  |
	#        |                                  |
	#        |       sb_act_none = "%K$*";      |
	#        |                                  |
	#        '+++++++++++++++++++++++++++++++++/
	#
	# /set awl_sbar_maxlength <ON|OFF>
	# * if you enable the maxlength setting, the block width will be used as a
	#   maximum length for the non-block status bar mode too.
	#
	# /set awl_height_adjust <num>
	# * num : how many lines to leave empty in viewer mode
	#
	# /set awl_sort <-data_level|-last_line|refnum>
	# * you can change the window sort order with this variable
	#     -data_level : sort windows with hilight first
	#     -last_line  : sort windows in order of activity
	#     refnum      : sort windows by window number
	#     active/server/tag : sort by server name
	#     lru         : sort windows with the last recently used last
	#   "-" reverses the sort order
	#   typechecks are supported via ::, e.g. active::Query or active::Irc::Query
	#   undefinedness can be checked with ~, e.g. ~active
	#   string comparison can be done with =, e.g. name=(status)
	#   to make sort case insensitive, use #i, e.g. name#i
	#   any key in the window hash can be tested, e.g. active/chat_type=XMPP
	#   multiple criteria can be separated with , or +, e.g. -data_level+-last_line
	#
	# /set awl_placement <top|bottom>
	# /set awl_position <num>
	# * these settings correspond to /statusbar because awl will create
	#   status bars for you
	# (see /help statusbar to learn more)
	#
	# /set awl_all_disable <ON|OFF>
	# * if you set awl_all_disable to ON, awl will also remove the
	#   last status bar it created if it is empty.
	#   As you might guess, this only makes sense with awl_hide_data > 0 ;)
	#
	# /set awl_viewer <ON|OFF>
	# * enable the external viewer script
	#
	# /set awl_viewer_launch <ON|OFF>
	# * try to auto-launch the viewer under tmux or with a shell command
	#   /awl restart is required all auto-launch related settings to take
	#   effect
	#
	# /set awl_viewer_tmux_position <left|top|right|bottom|custom>
	# * try to split in this direction when using tmux for the viewer
	#   custom : use custom_command setting
	#
	# /set awl_viewer_xwin_command <shell command>
	# * custom command to run in order to start the viewer when irssi is
	#   running under X
	#   %A  - gets replaced by the command to run the viewer
	#   %qA - additionally quote the command
	#
	# /set awl_viewer_custom_command <shell command>
	# * custom command to run in order to start the viewer
	#
	# /set awl_viewer_launch_env <string>
	# * specific environment settings for use on viewer auto-launch,
	#   without the AWL_ prefix
	#
	# /set awl_shared_sbar <left<right|OFF>
	# * share a status bar for the first awl item, you will need to manually
	#   /statusbar window add -after lag -priority 10 awl_shared
	#     left   : space in cells occupied on the left of status bar
	#     right  : space occupied on the right
	# Note: you need to replace "left" AND "right" with the appropriate numbers!
	#
	# /set awl_path <path>
	# * path to the file which the viewer script reads
	#
	# /set fancy_abbrev <no|head|strict|fancy>
	# * how to shorten too long names
	#     no     : shorten in the middle
	#     head   : always cut off the ends
	#     strict : shorten repeating substrings
	#     fancy  : combination of no+strict
	#
	# /set awl_custom_xform <perl code>
	# * specify a custom routine to transform window names
	#   example: s/^#// remove the #-mark of IRC channels
	#   the special flags $CHANNEL / $TAG / $QUERY / $NAME can be
	#   tested in conditionals
	#
	# /set awl_last_line_shade <timeout>
	# * set timeout to shade activity base colours, to enable
	#   you also need to add +-last_line to awl_sort
	#   (requires 256 colour support)
	#
	# /set awl_no_mode_hint <ON|OFF>
	# * whether to show the hint of running the viewer script in the
	#   status bar
	#
	# /set awl_mouse <ON|OFF>
	# * enable the terminal mouse in irssi
	# (use the awl-patched mouse.pl for gestures and commands if you need
	# them and disable mouse_escape)
	#
	# /set awl_mouse_offset <num>
	# * specifies where on the screen is the awl status bar
	#   (0 = on top/bottom, 1 = one additional line in between,
	#   e.g. prompt)
	#   you MUST set this correctly otherwise the mouse coordinates will
	#   be off
	#
	# /set mouse_scroll <num>
	# * how many lines the mouse wheel scrolls
	#
	# /set mouse_escape <num>
	# * seconds to disable the mouse, when not clicked on the windowlist
	#
	
	# Commands
	# ========
	# /awl detach <num>
	# * hide the current window from the window list. num specifies the
	#   data_level (optional)
	#
	# /awl attach
	# * unhide the current window from the window list
	#
	# /awl ack
	# * change to the next window with activity, ignoring detached windows
	#
	# /awl redraw
	# * redraws the windowlist. There may be occasions where the
	#   windowlist can get destroyed so you can use this command to
	#   force a redraw.
	#
	# /awl restart
	# * restart the connection to the viewer script.
	
	# Viewer script
	# =============
	# When run from the command line, adv_windowlist acts as the viewer
	# script to be used together with the irssi script to display the
	# window list in a sidebar/terminal of its own.
	#
	# One optional parameter is accepted, the awl_path
	#
	# The viewer can be configured by three environment variables:
	#
	# AWL_HI9=1
	# * interpret %9 as high-intensity toggle instead of bold. This had
	#   been the default prior to version 0.9b8
	#
	# AWL_AUTOFOCUS=0
	# * disable auto-focus behaviour when activating a window
	#
	# AWL_NOTITLE=1
	# * disable the title bar
	
	# Nei =^.^= ( anti@conference.jabber.teamidiot.de )
	
	no warnings 'redefine';
	use constant IN_IRSSI => __PACKAGE__ ne 'main' || $ENV{IRSSI_MOCK};
	use constant SCRIPT_FILE => __FILE__;
	no if !IN_IRSSI, strict => (qw(subs refs));
	use if IN_IRSSI, Irssi => ();
	use if IN_IRSSI, 'Irssi::TextUI' => ();
	use v5.10;
	use Encode;
	use Storable ();
	use IO::Socket::UNIX;
	use List::Util qw(min max reduce);
	use Hash::Util qw(lock_keys);
	use Text::ParseWords qw(shellwords);
	
	BEGIN {
	    if ($] < 5.012) {
		*CORE::GLOBAL::length = *CORE::GLOBAL::length = sub (_) {
		    defined $_[0] ? CORE::length($_[0]) : undef
		};
	    }
	    *Irssi::active_win = {}; # hide incorrect warning
	}
	
	unless (IN_IRSSI) {
	    local *_ = \@ARGV;
	    &AwlViewer::main;
	    exit;
	}
	
	
	use constant GLOB_QUEUE_TIMER => 100;
	
	our $BLOCK_ALL;  # localized blocker
	my @actString;   # status bar texts
	my @win_items;
	my $currentLines = 0;
	my %awins;
	my $globTime;    # timer to limit remake calls
	
	my %CHANGED;
	my $VIEWER_MODE;
	my $MOUSE_ON;
	my %mouse_coords;
	my %statusbars;
	my %S; # settings
	my $settings_str = '1';
	my $window_sort_func;
	my $custom_xform;
	my ($sb_base_width, $sb_base_width_pre, $sb_base_width_post);
	my $print_text_activity;
	my $shade_line_timer;
	my ($screenHeight, $screenWidth);
	my %viewer;
	
	my (%keymap, %nummap, %wnmap, %specialmap, %wnmap_exp, %custom_key_map);
	my %banned_channels;
	my %detach_map;
	my %abbrev_cache;
	
	use constant setc => 'awl';
	
	sub set ($) {
	    setc . '_' . $_[0]
	}
	
	sub add_statusbar {
	    for (@_) {
		# add subs
		my $l = set $_;
		{
		    my $close = $_;
		    no strict 'refs';
		    *{$l} = sub { awl($close, @_) };
		}
		Irssi::command("^statusbar $l reset");
		Irssi::command("statusbar $l enable");
		if (lc $S{placement} eq 'top') {
		    Irssi::command("statusbar $l placement top");
		}
		if (my $x = $S{position}) {
		    Irssi::command("statusbar $l position $x");
		}
		Irssi::command("statusbar $l add -priority 100 -alignment left barstart");
		Irssi::command("statusbar $l add $l");
		Irssi::command("statusbar $l add -priority 100 -alignment right barend");
		Irssi::command("statusbar $l disable");
		Irssi::statusbar_item_register($l, '$0', $l);
		$statusbars{$_} = 1;
		Irssi::command("statusbar $l enable");
	    }
	}
	
	sub remove_statusbar {
	    for (@_) {
		my $l = set $_;
		Irssi::command("statusbar $l disable");
		Irssi::command("statusbar $l reset");
		Irssi::statusbar_item_unregister($l);
		{
		    no strict 'refs';
		    undef &{$l};
		}
		delete $statusbars{$_};
	    }
	}
	
	my $awl_shared_empty = sub {
	    return if $BLOCK_ALL;
	    my ($item, $get_size_only) = @_;
	    $item->default_handler($get_size_only, '', '', 0);
	};
	
	sub syncLines {
	    my $maxLines = $S{maxlines};
	    my $newLines = ($maxLines > 0 and @actString > $maxLines) ?
		$maxLines :
	    ($maxLines < 0) ?
		-$maxLines :
		    @actString;
	    $currentLines = 1 if !$currentLines && $S{shared_sbar};
	    if ($S{shared_sbar} && !$statusbars{shared}) {
		my $l = set 'shared';
		{
		    no strict 'refs';
		    *{$l} = sub {
			return if $BLOCK_ALL;
			my ($item, $get_size_only) = @_;
	
			my $text = $actString[0];
			my $title = _get_format(set 'title');
			if (length $title) {
			    $title =~ s{\\(.)|(.)}{
				defined $2 ? quotemeta $2
				    : $1 eq 'V' ? '\u'
				    : $1 eq ':' ? quotemeta ':%n'
				    : $1 =~ /^[uUFQE]$/ ? "\\$1"
				    : quotemeta "\\$1"
				}sge;
			    $title = eval qq{"$title"};
			    $title .= ' ';
			}
			my $pat = defined $text ? "{sb $title\$*}" : '{sb }';
			$text //= '';
			$item->default_handler($get_size_only, $pat, $text, 0);
		    };
		}
		$statusbars{shared} = 1;
		remove_statusbar (0) if $statusbars{0};
	    }
	    elsif ($statusbars{shared} && !$S{shared_sbar}) {
		add_statusbar (0) if $currentLines && $newLines;
		delete $statusbars{shared};
		my $l = set 'shared';
		{
		    no strict 'refs';
		    *{$l} = $awl_shared_empty;
		}
	    }
	    if ($currentLines == $newLines) { return; }
	    elsif ($newLines > $currentLines) {
		add_statusbar ($currentLines .. ($newLines - 1));
	    }
	    else {
		remove_statusbar (reverse ($newLines .. ($currentLines - 1)));
	    }
	    $currentLines = $newLines;
	}
	
	sub awl {
	    return if $BLOCK_ALL;
	    my ($line, $item, $get_size_only) = @_;
	
	    my $text = $actString[$line];
	    my $pat = defined $text ? '{sb $*}' : '{sb }';
	    $text //= '';
	    $item->default_handler($get_size_only, $pat, $text, 0);
	}
	
	# remove old statusbars
	{ my %killBar;
	  sub get_old_status {
	      my ($textDest, $cont, $cont_stripped) = @_;
	      if ($textDest->{level} == 524288 and $textDest->{target} eq '' and !defined $textDest->{server}) {
		  my $name = quotemeta(set '');
		  if ($cont_stripped =~ m/^$name(\d+)\s/) { $killBar{$1} = 1; }
		  Irssi::signal_stop;
	      }
	  }
	  sub killOldStatus {
	      %killBar = ();
	      Irssi::signal_add_first('print text' => 'get_old_status');
	      Irssi::command('statusbar');
	      Irssi::signal_remove('print text' => 'get_old_status');
	      remove_statusbar(keys %killBar);
	  }
	}
	
	sub _add_map {
	    my ($type, $target, $map) = @_;
	    ($type->{$target}) = sort { length $a <=> length $b || $a cmp $b }
		$map, exists $type->{$target} ? $type->{$target} : ();
	}
	
	sub get_keymap {
	    my ($textDest, undef, $cont_stripped) = @_;
	    if ($textDest->{level} == 524288 and $textDest->{target} eq '' and !defined $textDest->{server}) {
		my $one_meta_or_ctrl_key = qr/((?:meta-)*?)(?:(meta-|\^)(\S)|(\w+))/;
		$cont_stripped = as_uni($cont_stripped);
		if ($cont_stripped =~ m/((?:$one_meta_or_ctrl_key-)*$one_meta_or_ctrl_key)\s+(.*)$/) {
		    my ($combo, $command) = ($1, $10);
		    my $map = '';
		    while ($combo =~ s/(?:-|^)$one_meta_or_ctrl_key$//) {
			my ($level, $ctl, $key, $nkey) = ($1, $2, $3, $4);
			my $numlevel = ($level =~ y/-//);
			$ctl = '' if !$ctl || $ctl ne '^';
			$map = ('-' x ($numlevel%2)) . ('+' x ($numlevel/2)) .
			    $ctl . (defined $key ? $key : "\01$nkey\01") . $map;
		    }
		    for ($command) {
			last unless length $map;
			if (/^change_window (\d+)/i) {
			    _add_map(\%nummap, $1, $map);
			}
			elsif (/^(?:command window goto|change_window) (\S+)/i) {
			    my $window = $1;
			    if ($window !~ /\D/) {
				_add_map(\%nummap, $window, $map);
			    }
			    elsif (lc $window eq 'active') {
				_add_map(\%specialmap, '_active', $map);
			    }
			    else {
				_add_map(\%wnmap, $window, $map);
			    }
			}
			elsif (/^(?:active_window|command ((awl )?ack))/i) {
			    _add_map(\%specialmap, '_active', $map);
			    $viewer{use_ack} = $1;
			}
			elsif (/^command window last/i) {
			    _add_map(\%specialmap, '_last', $map);
			}
			elsif (/^(?:upper_window|command window up)/i) {
			    _add_map(\%specialmap, '_up', $map);
			}
			elsif (/^(?:lower_window|command window down)/i) {
			    _add_map(\%specialmap, '_down', $map);
			}
			elsif (/^key\s+(\w+)/i) {
			    $custom_key_map{$1} = $map;
			}
		    }
		}
		Irssi::signal_stop;
	    }
	}
	
	sub update_keymap {
	    %nummap = %wnmap = %specialmap = %custom_key_map = ();
	    Irssi::signal_remove('command bind' => 'watch_keymap');
	    Irssi::signal_add_first('print text' => 'get_keymap');
	    Irssi::command('bind');
	    Irssi::signal_remove('print text' => 'get_keymap');
	    for (keys %custom_key_map) {
		if (exists $custom_key_map{$_} &&
			$custom_key_map{$_} =~ s/\01(\w+)\01/exists $custom_key_map{$1} ? $custom_key_map{$1} : "\02"/ge) {
		    if ($custom_key_map{$_} =~ /\02/) {
			delete $custom_key_map{$_};
		    }
		    else {
			redo;
		    }
		}
	    }
	    for my $keymap (\(%specialmap, %wnmap, %nummap)) {
		for (keys %$keymap) {
		    if ($keymap->{$_} =~ s/\01(\w+)\01/exists $custom_key_map{$1} ? $custom_key_map{$1} : "\02"/ge) {
			if ($keymap->{$_} =~ /\02/) {
			    delete $keymap->{$_};
			}
		    }
		}
	    }
	    Irssi::signal_add('command bind' => 'watch_keymap');
	    delete $viewer{client_keymap};
	    &wl_changed;
	}
	
	# watch keymap changes
	sub watch_keymap {
	    Irssi::timeout_add_once(1000, 'update_keymap', undef);
	}
	
	{ my %strip_table = (
	    # fe-common::core::formats.c:format_expand_styles
	    #      delete                format_backs  format_fores bold_fores   other stuff
	    (map { $_ => '' } (split //, '04261537' .  'kbgcrmyw' . 'KBGCRMYW' . 'U9_8I:|FnN>#[' . 'pP')),
	    #      escape
	    (map { $_ => $_ } (split //, '{}%')),
	   );
	  sub ir_strip_codes { # strip %codes
	      my $o = shift;
	      $o =~ s/(%(%|Z.{6}|z.{6}|X..|x..|.))/exists $strip_table{$2} ? $strip_table{$2} :
		  $2 =~ m{x(?:0[a-f]|[1-6][0-9a-z]|7[a-x])|z[0-9a-f]{6}}i ? '' : $1/gex;
	      $o
	  }
	}
	## ir_parse_special -- wrapper around parse_special
	## $i - input format
	## $args - array ref of arguments to format
	## $win - different target window (default current window)
	## $flags - different kind of escape flags (default 4|8)
	## returns formatted str
	sub ir_parse_special {
	    my $o;
	    my $i = shift;
	    my $args = shift // [];
	    y/ /\177/ for @$args; # hack to escape spaces
	    my $win = shift || Irssi::active_win;
	    my $flags = shift // 0x4|0x8;
	    my @cmd_args = ($i, (join ' ', @$args), $flags);
	    my $server = Irssi::active_server();
	    if (ref $win and ref $win->{active}) {
		$o = $win->{active}->parse_special(@cmd_args);
	    }
	    elsif (ref $win and ref $win->{active_server}) {
		$o = $win->{active_server}->parse_special(@cmd_args);
	    }
	    elsif (ref $server) {
		$o =  $server->parse_special(@cmd_args);
	    }
	    else {
		$o = &Irssi::parse_special(@cmd_args);
	    }
	    $o =~ y/\177/ /;
	    $o
	}
	
	sub sb_format_expand { # Irssi::current_theme->format_expand wrapper
	    Irssi::current_theme->format_expand(
		$_[0],
		(
		    Irssi::EXPAND_FLAG_IGNORE_REPLACES
			    |
		    ($_[1] ? 0 : Irssi::EXPAND_FLAG_IGNORE_EMPTY)
		)
	    )
	}
	
	{ my $term_type = Irssi::version > 20040819 ? 'term_charset' : 'term_type';
	  if (Irssi->can('string_width')) {
	      *screen_length = sub { Irssi::string_width($_[0]) };
	  }
	  else {
	    local $@;
	    eval { require Text::CharWidth; };
	    unless ($@) {
	        *screen_length = sub { Text::CharWidth::mbswidth($_[0]) };
	    }
	    else {
	        my $err = $@; chomp $err; $err =~ s/\sat .* line \d+\.$//;
	        #Irssi::print("%_$IRSSI{name}: warning:%_ Text::CharWidth module failed to load. Length calculation may be off! Error was:");
	        print "%_$IRSSI{name}:%_ $err";
	        *screen_length = sub {
	  	  my $temp = shift;
	  	  if (lc Irssi::settings_get_str($term_type) eq 'utf-8') {
	  	      Encode::_utf8_on($temp);
	  	  }
	  	  length($temp)
	        };
	    }
	  }
	  sub as_uni {
	      no warnings 'utf8';
	      Encode::decode(Irssi::settings_get_str($term_type), $_[0], 0)
	  }
	  sub as_tc {
	      Encode::encode(Irssi::settings_get_str($term_type), $_[0], 0)
	  }
	}
	
	sub sb_length {
	    screen_length(ir_strip_codes($_[0]))
	}
	
	sub run_custom_xform {
	    local $@;
	    eval {
		$custom_xform->()
	    };
	    if ($@) {
		$@ =~ /^(.*)/;
		print '%_'.(set 'custom_xform').'%_ died (disabling): '.$1;
		$custom_xform = undef;
	    }
	}
	
	sub remove_uniform {
	    my $o = shift;
	    $o =~ s/^xmpp:(.*?[%@]).+\.[^.]+$/$1/ or
		$o =~ s#^psyc://.+\.[^.]+/([@~].*)$#$1#;
	    if ($custom_xform) {
		run_custom_xform() for $o;
	    }
	    $o
	}
	
	sub remove_uniform_vars {
	    my $win = shift;
	    my $name = __PACKAGE__ . '::custom_xform::' . $win->{active}{type}
		if ref $win->{active} && $win->{active}{type};
	    no strict 'refs';
	    local ${$name} = 1 if $name;
	    remove_uniform(+shift);
	}
	
	sub lc1459 {
	    my $x = shift;
	    $x =~ y/][\\^/}{|~/;
	    lc $x
	}
	
	sub window_list {
	    my $i = 0;
	    map { $_->[1] } sort $window_sort_func map { [ $i++, $_ ] } Irssi::windows;
	}
	
	sub _calculate_abbrev {
	    my ($wins, $abbrevList) = @_;
	    if ($S{fancy_abbrev} !~ /^(no|off|head)/i) {
		my @nameList = map { ref $_ ? remove_uniform_vars($_, as_uni($_->get_active_name) // '') : '' } @$wins;
		for (my $i = 0; $i < @nameList - 1; ++$i) {
		    my ($x, $y) = ($nameList[$i], $nameList[$i + 1]);
		    s/^[+#!=]// for $x, $y;
		    my $res = exists $abbrev_cache{$x}{$y} ? $abbrev_cache{$x}{$y}
			: $abbrev_cache{$x}{$y} = string_LCSS($x, $y);
		    if (defined $res) {
			for ($nameList[$i], $nameList[$i + 1]) {
			    $abbrevList->{$_} //= int((index $_, $res) + (length $res) / 2);
			}
		    }
		}
	    }
	}
	
	my %act_last_line_shades = (
	    r => [qw[ 50 40 30 20 ]],
	    g => [qw[ 1O 1I 1C 16 ]],
	    y => [qw[ 5O 4I 3C 26 ]],
	    b => [qw[ 15 14 13 12 ]],
	    m => [qw[ 54 43 32 21 ]],
	    c => [qw[ 1S 1L 1E 17 ]],
	    w => [qw[ 7W 7T 7Q 3E ]],
	    K => [qw[ 7M 7K 27 7H ]],
	    R => [qw[ 60 50 40 30 ]],
	    G => [qw[ 1U 1O 1I 1C ]],
	    Y => [qw[ 6U 5O 4I 3C ]],
	    B => [qw[ 2B 2A 29 28 ]],
	    M => [qw[ 65 54 43 32 ]],
	    C => [qw[ 1Z 1S 1L 1E ]],
	    W => [qw[ 6Z 5S 7R 7O ]],
	   );
	
	sub _format_display {
	    my (undef, $format, $cformat, $hilight, $name, $number, $key, $win) = @_;
	    if ($print_text_activity && $S{line_shade}) {
		my @hilight_code = split /\177/, sb_format_expand("{$hilight \177}"), 2;
		my $max_time = max(1, log($S{line_shade}) - log(1000));
		my $time_delta = min(3, min($max_time, log(max(1, time - $win->{last_line}))) / $max_time * 3);
		if ($hilight_code[0] =~ /%(.)/ && exists $act_last_line_shades{$1}) {
		    $hilight = 'sb_act_hilight_color %X'.$act_last_line_shades{$1}[$time_delta];
		}
	    }
	    $cformat = '$0' unless length $cformat;
	    my %map = ('$C' => $cformat, '$N' => '$1', '$Q' => '$2');
	    $format =~ s<(\$.)><$map{$1}//$1>ge;
	    $format =~ s<\$H((?:\$.|[^\$])*?)\$S><{$hilight $1%n}>g;
	    my @ret = ir_parse_special(sb_format_expand($format), [$name, $number, $key], $win);
	    @ret
	}
	
	sub _get_format {
	    Irssi::current_theme->get_format(__PACKAGE__, @_)
	}
	
	sub _is_detached {
	    my ($win, $active_number) = @_;
	    my $level = $win->{data_level} // 0;
	    my $number = $win->{refnum};
	    my $name = lc1459( as_uni($win->{name}) );
	    my $active = lc1459( as_uni($win->get_active_name) // '' );
	    my $tag = $win->{active} && $win->{active}{server} ? lc1459( as_uni($win->{active}{server}{tag}) // '' ) : '';
	    my @cond = ($number);
	    push @cond, "$name" if length $name;
	    push @cond, "$tag/$active" if length $tag && length $active;
	    push @cond, "$active" if length $active;
	    push @cond, "$tag/*", "$tag/::all" if length $tag;
	    push @cond, "*", "::all";
	    for my $cond (@cond) {
		if (exists $detach_map{ $cond }) {
		    my $dd = $detach_map{ $cond } // $S{detach_data};
		    return $win->{data_level} < abs $dd
			&& ($number != $active_number || 0 <= $dd);
		}
	    }
	    return;
	}
	
	sub _calculate_items {
	    my ($wins, $abbrevList) = @_;
	
	    my $display_header = _get_format(set 'display_header');
	    my $name_format = _get_format(set 'name_display');
	    my $abbrev_chars = as_uni(_get_format(set 'abbrev_chars'));
	
	    my %displays;
	
	    my $active = Irssi::active_win;
	    @win_items = ();
	    %keymap = (%nummap, %wnmap_exp);
	
	    my ($numPad, $keyPad) = (0, 0);
	    if ($VIEWER_MODE or $S{block} < 0) {
		$numPad = length((sort { length $b <=> length $a } keys %keymap)[0]) // 0;
		$keyPad = length((sort { length $b <=> length $a } values %keymap)[0]) // 0;
	    }
	    my $last_net;
	    my ($abbrev1, $abbrev2) = $abbrev_chars =~ /(\X)(.*)/;
	    my @abbrev_chars = ('~', "\x{301c}");
	    unless (defined $abbrev1 && screen_length(as_tc($abbrev1)) == 1) { $abbrev1 = $abbrev_chars[0] }
	    unless (length $abbrev2) {
		$abbrev2 = $abbrev1;
		if ($abbrev1 eq $abbrev_chars[0]) {
		    $abbrev2 = $abbrev_chars[1];
		}
		else {
		    $abbrev2 = $abbrev1;
		}
	    }
	    if (screen_length(as_tc($abbrev2)) == 1) {
		$abbrev2 x= 2;
	    }
	    while (screen_length(as_tc($abbrev2)) > 2) {
		chop $abbrev2;
	    }
	    unless (screen_length(as_tc($abbrev2)) == 2) {
		$abbrev2 = $abbrev_chars[1];
	    }
	    for my $win (@$wins) {
		my $global_tag_header_mode;
	
		next unless ref $win;
	
		my $backup_win = Storable::dclone($win);
		delete $backup_win->{active} unless ref $backup_win->{active};
	
		$global_tag_header_mode =
		    $display_header && ($last_net // '') ne ($backup_win->{active}{server}{tag} // '');
	
		if ($win->{data_level} < abs $S{hide_data}
			&& ($win->{refnum} != $active->{refnum} || 0 <= $S{hide_data})) {
		    next; }
		elsif (exists $awins{$win->{refnum}} && $S{hide_empty} && !$win->items
			&& ($win->{refnum} != $active->{refnum} || 0 <= $S{hide_empty})) {
		    next; }
		elsif (_is_detached($win, $active->{refnum})) {
		    next; }
	
		my $colour = $win->{hilight_color} // '';
		my $hilight = do {
		    if    ($win->{data_level} == 0) { 'sb_act_none'; }
		    elsif ($win->{data_level} == 1) { 'sb_act_text'; }
		    elsif ($win->{data_level} == 2) { 'sb_act_msg'; }
		    elsif ($colour           ne '') { "sb_act_hilight_color $colour"; }
		    elsif ($win->{data_level} == 3) { 'sb_act_hilight'; }
		    else                            { 'sb_act_special'; }
		};
		my $number = $win->{refnum};
	
		my ($name, $display, $cdisplay);
		if ($global_tag_header_mode) {
		    $display = $display_header;
		    $name = as_uni($backup_win->{active}{server}{tag}) // '';
		    if ($custom_xform) {
			no strict 'refs';
			local ${ __PACKAGE__ . '::custom_xform::TAG' } = 1;
			run_custom_xform() for $name;
		    }
		}
		else {
		    my @display = ('display_nokey');
		    if (defined $keymap{$number} and $keymap{$number} ne '') {
			unshift @display, map { (my $cpy = $_) =~ s/_no/_/; $cpy } @display;
		    }
		    if (exists $awins{$number}) {
			unshift @display, map { my $cpy = $_; $cpy .= '_visible'; $cpy } @display;
		    }
		    if ($active->{refnum} == $number) {
			unshift @display, map { my $cpy = $_; $cpy .= '_active'; $cpy }
			    grep { !/_visible$/ } @display;
		    }
		    $display = (grep { length $_ }
				       map { $displays{$_} //= _get_format(set $_) }
					   @display)[0];
		    $cdisplay = $name_format;
		    $name = as_uni($win->get_active_name) // '';
		    $name = '*' if $S{banned_on} and exists $banned_channels{lc1459($name)};
		    $name = remove_uniform_vars($win, $name) if $name ne '*';
		    if ($name ne '*' and $win->{name} ne '' and $S{prefer_name}) {
			$name = as_uni($win->{name});
			if ($custom_xform) {
			    no strict 'refs';
			    local ${ __PACKAGE__ . '::custom_xform::NAME' } = 1;
			    run_custom_xform() for $name;
			}
		    }
	
		    if (!$VIEWER_MODE && $S{block} >= 0 && $S{hide_name}
			&& $win->{data_level} < abs $S{hide_name}
			&& ($win->{refnum} != $active->{refnum} || 0 <= $S{hide_name})) {
			$name = '';
			$cdisplay = '';
		    }
		}
	
		$display = "$display%n";
		my $num_ent = (' 'x max(0,$numPad - length $number)) . $number;
		my $key_ent = exists $keymap{$number} ? ((' 'x max(0,$keyPad - length $keymap{$number})) . $keymap{$number}) : ' 'x$keyPad;
		if ($VIEWER_MODE or $S{sbar_maxlen} or $S{block} < 0) {
		    my $baseLength = sb_length(_format_display(
			'', $display, $cdisplay, $hilight,
			'x', # placeholder
			$num_ent,
			$key_ent,
			$win)) - 1;
		    my $diff = (abs $S{block}) - (screen_length(as_tc($name)) + $baseLength);
		    if ($diff < 0) { # too long
			my $screen_length = screen_length(as_tc($name));
			if ((abs $diff) >= $screen_length) { $name = '' } # forget it
			elsif ((abs $diff) + screen_length(as_tc(substr($name, 0, 1))) >= $screen_length) { $name = substr($name, 0, 1); }
			else {
			    my $ulen = length $name;
			    my $middle2 = exists $abbrevList->{$name} ?
				($S{fancy_strict}) ?
				    2* $abbrevList->{$name} :
				   (2*($abbrevList->{$name} + $ulen) / 3) :
				       ($S{fancy_head}) ?
					2*$ulen :
					    $ulen;
			    my $first = 1;
			    while (length $name > 1) {
				my $cp = $middle2 >= 0 ? $middle2/2 : -1; # clearing position
				my $rm = 2;
				# if character at end is wider than 1 cell -> replace it with ~
				if (screen_length(as_tc(substr $name, $cp, 1)) > 1) {
				    if ($first || $cp < 0) {
					$rm = 1;
					$first = undef;
				    }
				}
				elsif ($cp < 0) { # elsif at end -> replace last 2 characters
				    --$cp;
				}
				(substr $name, $cp, $rm) = $abbrev1;
				if ($cp > -1 && $rm > 1) {
				    --$middle2;
				}
				my $sl = screen_length(as_tc($name));
				if ($sl + $baseLength < abs $S{block}) {
				    (substr $name, ($middle2+1)/2, 1) = $abbrev2;
				    last;
				}
				elsif ($sl + $baseLength == abs $S{block}) {
				    last;
				}
			    }
			}
		    }
		    elsif ($VIEWER_MODE or $S{block} < 0) {
			$name .= (' ' x $diff);
		    }
		}
	
		push @win_items, _format_display(
		    '', $display, $cdisplay, $hilight,
		    as_tc($name),
		    $num_ent,
		    as_tc($key_ent),
		    $win);
	
		if ($global_tag_header_mode) {
		    $last_net = $backup_win->{active}{server}{tag};
		    redo;
		}
	
		$mouse_coords{refnum}{$#win_items} = $number;
	    }
	}
	
	sub _spread_items {
	    my $width = $screenWidth - $sb_base_width - 1;
	    my @separator = _get_format(set 'separator');
	    if ($S{block} >= 0) {
		my $sep2 = _get_format(set 'separator2');
		push @separator, $sep2 if length $sep2 && $sep2 ne $separator[0];
	    }
	    $separator[0] .= '%n';
	    my @sepLen = map { sb_length($_) } @separator;
	
	    @actString = ();
	    my $curLine;
	    my $curLen = 0;
	    if ($S{shared_sbar}) {
		$curLen += $S{shared_sbar}[0] + 2;
		$width -= $S{shared_sbar}[2];
	    }
	    my $mouse_header_check = 0;
	    for my $it (@win_items) {
		my $itemLen = sb_length($it);
		if ($curLen) {
		    if ($curLen + $itemLen + $sepLen[$mouse_header_check % @sepLen] > $width) {
			$width += $S{shared_sbar}[2]
			    if !@actString && $S{shared_sbar};
			push @actString, $curLine;
			$curLine = undef;
			$curLen = 0;
		    }
		    elsif (defined $curLine) {
			$curLine .= $separator[$mouse_header_check % @separator];
			$curLen += $sepLen[$mouse_header_check % @sepLen];
		    }
		}
		$curLine .= $it;
		if (exists $mouse_coords{refnum}{$mouse_header_check}) {
		    $mouse_coords{scalar @actString}{ $_ } = $mouse_coords{refnum}{$mouse_header_check}
			for $curLen .. $curLen + $itemLen - 1;
		}
		$curLen += $itemLen;
	    }
	    continue {
		++$mouse_header_check;
	    }
	    $curLen -= $S{shared_sbar}[0]
		if !@actString && $S{shared_sbar};
	    push @actString, $curLine if $curLen;
	}
	
	sub remake {
	    my %abbrevList;
	    my @wins = window_list();
	    if ($VIEWER_MODE or $S{sbar_maxlen} or $S{block} < 0) {
		_calculate_abbrev(\@wins, \%abbrevList);
	    }
	
	    %mouse_coords = ( refnum => +{} );
	    _calculate_items(\@wins, \%abbrevList);
	
	    unless ($VIEWER_MODE) {
		_spread_items();
	
		push @actString, undef unless @actString || $S{all_disable};
	    }
	}
	
	sub update_wl {
	    return if $BLOCK_ALL;
	    remake();
	
	    Irssi::statusbar_items_redraw(set $_) for keys %statusbars;
	
	    unless ($VIEWER_MODE) {
		Irssi::timeout_add_once(100, 'syncLines', undef);
	    }
	    else {
		syncViewer();
	    }
	}
	
	sub screenFullRedraw {
	    my ($window) = @_;
	    if (!ref $window or $window->{refnum} == Irssi::active_win->{refnum}) {
		$viewer{fullRedraw} = 1 if $viewer{client};
		$settings_str = '';
		&setup_changed;
	    }
	}
	
	sub restartViewerServer {
	    if ($VIEWER_MODE) {
		stop_viewer();
		start_viewer();
	    }
	}
	
	sub _simple_quote {
	    my @r = map {
		my $x = $_;
		$x =~ s/'/'"'"'/g;
		$x = "'$x'";
	    } @_;
	    wantarray ? @r : shift @r
	}
	
	sub _viewer_command_replace_format {
	    my ($ecmd, @args) = @_;
	    my $file = _simple_quote(SCRIPT_FILE());
	    my $path = _simple_quote($viewer{path});
	    my @env;
	    for my $env (shellwords($S{viewer_launch_env})) {
		if ($env =~ /^(\w+)(?:=(.*))$/) {
		    push @env, "AWL_$1=$2"
		}
	    }
	    my $cmd = join ' ',
		(@env ? ('env', _simple_quote(@env)) : ()),
		'perl', $file, '-1', _simple_quote(@args), $path;
	    $ecmd =~ s{%(%|\w+)}{
		my $sub = $1;
		if ($sub eq '%') {
		    '%'
		}
		elsif ($sub =~ /^(q*)A(.*)/) {
		    my $ret = $cmd;
		    for (1..length $1) {
			$ret = _simple_quote($ret);
		    }
		    "$ret$2"
		}
		else {
		    "%$sub"
		}
	    }gex;
	    $ecmd
	}
	
	sub start_viewer {
	    unlink $viewer{path} if -S $viewer{path} || -p _;
	
	    $viewer{server} = IO::Socket::UNIX->new(
		Type => SOCK_STREAM,
		Local => $viewer{path},
		Listen => 1
	       );
	    unless ($viewer{server}) {
		$viewer{msg} = "Viewer: $!";
		$viewer{retry} = Irssi::timeout_add_once(5000, 'retry_viewer', 1);
		return;
	    }
	    $viewer{server}->blocking(0);
	    set_viewer_mode_hint();
	    $viewer{server_tag} = Irssi::input_add($viewer{server}->fileno, INPUT_READ, 'vi_connected', undef);
	
	    if ($S{viewer_launch}) {
		if (length $ENV{TMUX_PANE} && length $ENV{TMUX} && lc $S{viewer_tmux_position} ne 'custom') {
		    my $cmd = _viewer_command_replace_format('%qA', '-p', lc $S{viewer_tmux_position});
		    Irssi::command("exec - tmux neww -d $cmd 2>&1 &");
		}
		elsif (length $ENV{WINDOWID} && length $ENV{DISPLAY} && length $S{viewer_xwin_command} && $S{viewer_xwin_command} =~ /\S/) {
		    my $cmd = _viewer_command_replace_format($S{viewer_xwin_command});
		    Irssi::command("exec - $cmd 2>&1 &");
		}
		elsif (length $S{viewer_custom_command} && $S{viewer_custom_command} =~ /\S/) {
		    my $cmd = _viewer_command_replace_format($S{viewer_custom_command});
		    Irssi::command("exec - $cmd 2>&1 &");
		}
	    }
	}
	
	sub set_viewer_mode_hint {
	    return unless $viewer{server};
	    if ($S{no_mode_hint}) {
		$viewer{msg} = undef;
	    }
	    else {
		my ($name) = __PACKAGE__ =~ /::([^:]+)$/;
		$viewer{msg} = "Run $name from the shell or switch to sbar mode";
	    }
	}
	
	sub retry_viewer {
	    start_viewer();
	}
	
	sub vi_close_client {
	    Irssi::input_remove(delete $viewer{client_tag}) if exists $viewer{client_tag};
	    $viewer{client}->close if $viewer{client};
	    delete $viewer{client};
	    delete $viewer{client_keymap};
	    delete $viewer{client_settings};
	    delete $viewer{client_env};
	    delete $viewer{fullRedraw};
	}
	
	sub vi_connected {
	    vi_close_client();
	    $viewer{client} = $viewer{server}->accept or return;
	    $viewer{client}->blocking(0);
	    $viewer{client_tag} = Irssi::input_add($viewer{client}->fileno, INPUT_READ, 'vi_clientinput', undef);
	    syncViewer();
	}
	
	use constant VIEWER_BLOCK_SIZE => 1024;
	sub vi_clientinput {
	    if ($viewer{client}->read(my $buf, VIEWER_BLOCK_SIZE)) {
		$viewer{rcvbuf} .= $buf;
		if ($viewer{rcvbuf} =~ s/^(?:(active|\d+)|(last|up|down))\n//igm) {
		    if (defined $2) {
			Irssi::command("window $2");
		    }
		    elsif (lc $1 eq 'active' && $viewer{use_ack}) {
			Irssi::command($viewer{use_ack});
		    }
		    else {
			Irssi::command("window goto $1");
		    }
		}
	    }
	    else {
		vi_close_client();
		Irssi::timeout_add_once(100, 'syncViewer', undef);
	    }
	}
	
	sub stop_viewer {
	    Irssi::timeout_remove(delete $viewer{retry}) if exists $viewer{retry};
	    vi_close_client();
	    Irssi::input_remove(delete $viewer{server_tag}) if exists $viewer{server_tag};
	    return unless $viewer{server};
	    $viewer{server}->close;
	    delete $viewer{server};
	}
	sub _encode_var {
	    my $str;
	    while (@_) {
		my ($name, $var) = splice @_, 0, 2;
		my $type = ref $var ? $var =~ /HASH/ ? 'map' : $var =~ /ARRAY/ ? 'list' : '' : '';
		$str .= "\n\U$name$type\_begin\n";
		if ($type eq 'map') {
		    no warnings 'numeric';
		    $str .= " $_\n ${$var}{$_}\n" for sort { $a <=> $b || $a cmp $b } keys %$var;
		}
		elsif ($type eq 'list') {
		    $str .= " $_\n" for @$var;
		}
		else {
		    $str .= " $var\n";
		}
		$str .= "\U$name$type\_end\n";
	    }
	    $str
	}
	sub syncViewer {
	    if ($viewer{client}) {
		@actString = ();
		if ($currentLines) {
		    killOldStatus();
		    $currentLines = 0;
		}
		my $str;
		unless ($viewer{client_keymap}) {
		    $str .= _encode_var('key', +{ %nummap, %specialmap });
		    $viewer{client_keymap} = 1;
		}
		unless ($viewer{client_settings}) {
		    $str .= _encode_var(
			block => $S{block},
			ha => $S{height_adjust},
			mc => $S{maxcolumns},
			ml => $S{maxlines},
		       );
		    $viewer{client_settings} = 1;
		}
		unless ($viewer{client_env}) {
		    $str .= _encode_var(irssienv => +{
			length $ENV{TMUX_PANE} && length $ENV{TMUX} ?
			     (tmux_pane => $ENV{TMUX_PANE},
			      tmux_srv => $ENV{TMUX}) : (),
			length $ENV{WINDOWID} ?
			     (xwinid => $ENV{WINDOWID}) : (),
		       });
		    $viewer{client_env} = 1;
		}
		my $separator = _get_format(set 'separator');
		my $sepLen = sb_length($separator);
		my $item_bg = _get_format(set 'viewer_item_bg');
		my $title = _get_format(set 'title');
		if (length $title) {
		    $title =~ s{\\(.)|(.)}{
			defined $2 ? quotemeta $2
			    : $1 eq 'V' ? '\U'
			    : $1 eq ':' ? quotemeta '%N'
			    : $1 =~ /^[uUFQE]$/ ? "\\$1"
			    : quotemeta "\\$1"
			}sge;
		    $title = eval qq{"$title"};
		}
		$str .= _encode_var(redraw => 1) if delete $viewer{fullRedraw};
		$str .= _encode_var(separator => $separator,
				    seplen => $sepLen,
				    itembg => $item_bg,
				    title => $title,
				    mouse => $mouse_coords{refnum},
				    key2 => \%wnmap_exp,
				    win => \@win_items);
	
		my $was = $viewer{client}->blocking(1);
		$viewer{client}->print($str);
		$viewer{client}->blocking($was);
	    }
	    elsif ($viewer{server}) {
		if (defined $viewer{msg}) {
		    @actString = ((uc setc()).": $viewer{msg}");
		}
		else {
		    @actString = ();
		}
	    }
	    elsif (defined $viewer{msg}) {
		@actString = ((uc setc()).": $viewer{msg}");
	    }
	    if (@actString) {
		Irssi::timeout_add_once(100, 'syncLines', undef);
	    }
	    elsif ($currentLines) {
		killOldStatus();
		$currentLines = 0;
	    }
	}
	
	sub reset_awl {
	    Irssi::timeout_remove($shade_line_timer) if $shade_line_timer; $shade_line_timer = undef;
	    my $was_sort = $S{sort} // '';
	    my $was_xform = $S{xform} // '';
	    my $was_shared = $S{shared_sbar};
	    my $was_no_hint = $S{no_mode_hint};
	    %S = (
		sort	      => Irssi::settings_get_str( set 'sort'),
		fancy_abbrev  => Irssi::settings_get_str('fancy_abbrev'),
		xform	      => Irssi::settings_get_str( set 'custom_xform'),
		block	      => Irssi::settings_get_int( set 'block'),
		banned_on     => Irssi::settings_get_bool('banned_channels_on'),
		prefer_name   => Irssi::settings_get_bool(set 'prefer_name'),
		hide_data     => Irssi::settings_get_int( set 'hide_data'),
		hide_name     => Irssi::settings_get_int( set 'hide_name_data'),
		hide_empty    => Irssi::settings_get_int( set 'hide_empty'),
		detach        => Irssi::settings_get_str( set 'detach'),
		detach_data   => Irssi::settings_get_int( set 'detach_data'),
		detach_aht    => Irssi::settings_get_bool(set 'detach_aht'),
		sbar_maxlen   => Irssi::settings_get_bool(set 'sbar_maxlength'),
		placement     => Irssi::settings_get_str( set 'placement'),
		position      => Irssi::settings_get_int( set 'position'),
		maxlines      => Irssi::settings_get_int( set 'maxlines'),
		maxcolumns    => Irssi::settings_get_int( set 'maxcolumns'),
		all_disable   => Irssi::settings_get_bool(set 'all_disable'),
		height_adjust => Irssi::settings_get_int( set 'height_adjust'),
		mouse_offset  => Irssi::settings_get_int( set 'mouse_offset'),
		mouse_scroll  => Irssi::settings_get_int( 'mouse_scroll'),
		mouse_escape  => Irssi::settings_get_int( 'mouse_escape'),
		line_shade    => Irssi::settings_get_time(set 'last_line_shade'),
		no_mode_hint  => Irssi::settings_get_bool(set 'no_mode_hint'),
		viewer_launch	      => Irssi::settings_get_bool(set 'viewer_launch'),
		viewer_launch_env     => Irssi::settings_get_str(set 'viewer_launch_env'),
		viewer_xwin_command   => Irssi::settings_get_str(set 'viewer_xwin_command'),
		viewer_custom_command => Irssi::settings_get_str(set 'viewer_custom_command'),
		viewer_tmux_position  => Irssi::settings_get_str(set 'viewer_tmux_position'),
		);
	    $S{fancy_strict} = $S{fancy_abbrev} =~ /^strict/i;
	    $S{fancy_head} = $S{fancy_abbrev} =~ /^head/i;
	    my $shared = Irssi::settings_get_str(set 'shared_sbar');
	    if ($shared =~ /^(\d+)([<])(\d+)$/) {
		$S{shared_sbar} = [$1, $2, $3];
	    }
	    else {
		Irssi::settings_set_str(set 'shared_sbar', 'OFF');
		$S{shared_sbar} = undef;
	    }
	    lock_keys(%S);
	    if ($was_sort ne $S{sort}) {
		$print_text_activity = undef;
		my @sort_order = grep { @$_ > 4 } map {
		    s/^\s*//;
		    my $reverse = s/^\W*\K[-!]//;
		    my $undef_check = s/^\W*\K~// ? 1 : undef;
		    my $equal_check = s/=(.*)\s?$// ? $1 : undef;
		    s/\s*$//;
		    my $ignore_case = s/#i$// ? 1 : undef;
	
		    $print_text_activity = 1 if $_ eq 'last_line';
	
		    my @path = split '/';
		    my $class_check = @path && $path[-1] =~ s/(::.*)$// ? $1 : undef;
		    my $lru = "@path" eq 'lru';
	
		    [ $reverse ? -1 : 1, $undef_check, $equal_check, $class_check, $ignore_case, $lru, @path ]
		} "$S{sort}," =~ /([^+,]*|[^+,]*=[^,]*?\s(?=\+)|[^+,]*=[^,]*)[+,]/g;
		$window_sort_func = sub {
		    no warnings qw(numeric uninitialized);
		    for my $so (@sort_order) {
			my @x = map {
			    my $ret = 0;
			    $_ = lc1459($_) if defined $_ && !ref $_ && $so->[4];
			    $ret = $_ eq ($so->[4] ? lc1459($so->[2]) : $so->[2]) ? 1 : -1 if defined $so->[2];
			    $ret = defined $_ ? ($ret || -3) : 3 if $so->[1];
			    $ret = ref $_ && $_->isa('Irssi'.$so->[3]) ? 2 : ($ret || -2) if $so->[3];
			    -$ret || $_
			}
			map {
			    $so->[5] ? $_->[0] : reduce { return unless ref $a; $a->{$b} } $_->[1], @{$so}[6..$#$so]
			} $a, $b;
			return ((($x[0] <=> $x[1] || $x[0] cmp $x[1]) * $so->[0]) || next);
		    }
		    return ($a->[1]{refnum} <=> $b->[1]{refnum});
		};
	    }
	    if ($was_xform ne $S{xform}) {
		if ($S{xform} !~ /\S/) {
		    $custom_xform = undef;
		}
		else {
		    my $script_pkg = __PACKAGE__ . '::custom_xform';
		    local $@;
		    $custom_xform = eval qq{
	package $script_pkg;
	use strict;
	no warnings;
	our (\$QUERY, \$CHANNEL, \$TAG, \$NAME);
	return sub {
	# line 1 @{[ set 'custom_xform' ]}\n$S{xform}\n}};
		    if ($@) {
			$@ =~ /^(.*)/;
			print '%_'.(set 'custom_xform').'%_ did not compile: '.$1;
		    }
		}
	    }
	
	    my $new_settings = join "\n", $VIEWER_MODE
		 ? ("\\", $S{block}, $S{height_adjust}, $S{maxlines}, $S{maxcolumns})
		 : ("!", $S{placement}, $S{position});
	
	    my $first_viewer = $settings_str eq '1';
	    if ($settings_str ne $new_settings) {
		@actString = ();
		%abbrev_cache = ();
		$currentLines = 0;
		killOldStatus();
		delete $viewer{client_settings};
		$settings_str = $new_settings;
	    }
	
	    my $was_mouse_mode = $MOUSE_ON;
	    if ($MOUSE_ON = Irssi::settings_get_bool(set 'mouse') and !$was_mouse_mode) {
		install_mouse();
	    }
	    elsif ($was_mouse_mode and !$MOUSE_ON) {
		uninstall_mouse();
	    }
	
	    unless ($first_viewer) {
		my $path = Irssi::settings_get_str(set 'path');
		my $was_viewer_mode = $VIEWER_MODE;
		if ($was_viewer_mode &&
		    defined $viewer{path} && $viewer{path} ne $path) {
		    stop_viewer();
		    $was_viewer_mode = 0;
		}
		elsif ($was_viewer_mode && $S{no_mode_hint} != $was_no_hint + 0) {
		    set_viewer_mode_hint();
		}
		$viewer{path} = $path;
		if ($VIEWER_MODE = Irssi::settings_get_bool(set 'viewer') and !$was_viewer_mode) {
		    start_viewer();
		}
		elsif ($was_viewer_mode and !$VIEWER_MODE) {
		    stop_viewer();
		}
	    }
	
	    %banned_channels = map { lc1459(as_uni($_)) => undef }
		split ' ', Irssi::settings_get_str('banned_channels');
	
	    %detach_map = ($S{detach_aht}
			   ? (map { ( lc1459(as_uni($_)) => undef ) }
			      split ' ', Irssi::settings_get_str('activity_hide_targets')) : (),
			   (map { my ($k, $v) = (split /(?:,(-?\d+))$/, $_)[0, 1];
			    ( lc1459(as_uni($k)) => $v ) }
			    split ' ', $S{detach}));
	
	    my @sb_base = split /\177/, sb_format_expand("{sbstart}{sb \177}{sbend}"), 2;
	    $sb_base_width_pre = sb_length($sb_base[0]);
	    $sb_base_width_post = max 0, sb_length($sb_base[1])-1;
	    $sb_base_width = $sb_base_width_pre + $sb_base_width_post;
	
	    if ($print_text_activity && $S{line_shade}) {
		$shade_line_timer = Irssi::timeout_add(max(10 * GLOB_QUEUE_TIMER, 100*$S{line_shade}**(1/3)), 'wl_changed', undef);
	    }
	
	    $CHANGED{AWINS} = 1;
	}
	
	sub hide_window {
	    my ($data) = @_;
	    my $ent;
	
	    $data =~ s/\s*$//;
	    my $win = Irssi::active_win;
	    my $number = $win->{refnum};
	    my $name = as_uni($win->{name});
	    my $active = as_uni($win->get_active_name) // '';
	    my $tag = $win->{active} && $win->{active}{server} ? as_uni($win->{active}{server}{tag}) // '' : '';
	    if (length $name) {
		$ent = "$name";
	    }
	    elsif (length $tag && length $active) {
		$ent = "$tag/$active";
	    }
	    else {
		$ent = "$number";
	    }
	
	    my $found = 0;
	    my @setting;
	    for my $s (split ' ', $S{detach}) {
		my ($k, $v) = (split /(?:,(-?\d+))$/, $s)[0, 1];
		if (lc1459(as_uni($k)) eq lc1459($ent)) {
		    unless ($found) {
			if ($data =~ /^(-?\d+)$/) {
			    $ent .= ",$1";
			}
			if (defined $v && 0 == abs $v) {
			    $win->print("Hiding window $ent");
			}
			push @setting, as_tc($ent);
			$found = 1;
		    }
		}
		else {
		    push @setting, defined $v ? "$k,$v" : $k;
		}
	    }
	    unless ($found) {
		$win->print("Hiding window $ent");
		if ($data =~ /^(-?\d+)$/) {
		    $ent .= ",$1";
		}
		push @setting, as_tc($ent);
	    }
	
	    if (@setting) {
		Irssi::command("^set ".(set 'detach')." @setting");
	    } else {
		Irssi::command("^set -clear ".(set 'detach'));
	    }
	}
	
	sub unhide_window {
	    my ($data, $server, $witem) = @_;
	    my $win = Irssi::active_win;
	    my $number = $win->{refnum};
	    my $name = as_uni($win->{name});
	    my $active = as_uni($win->get_active_name) // '';
	    my $tag = $win->{active} && $win->{active}{server} ? as_uni($win->{active}{server}{tag}) // '' : '';
	
	    my %detach_aht;
	    if ($S{detach_aht}) {
		%detach_aht = (map { ( lc1459(as_uni($_)) => undef ) }
			       split ' ', Irssi::settings_get_str('activity_hide_targets'));
	    }
	    my @setting;
	    my @kills = (length $name ? $name : undef,
			 length $tag && length $active ? "$tag/$active" : undef,
			 length $active ? $active : undef,
			 $number);
	    my @was_unhidden = (0) x @kills;
	    for my $s (split ' ', $S{detach}) {
		my ($k, $v) = (split /(?:,(-?\d+))$/, $s)[0, 1];
		my $k2 = lc1459(as_uni($k));
		my $kill;
		for my $ki (0..$#kills) {
		    if (defined $kills[$ki] && $k2 eq lc1459($kills[$ki])) {
			$kill = $ki;
		    }
		}
	
		if (defined $kill) {
		    if (defined $v && 0 == abs $v) {
			$was_unhidden[$kill] = 1;
			push @setting, defined $v ? "$k,$v" : $k;
		    } else {
			$win->print("Unhiding window $kills[$kill]");
		    }
		}
		else {
		    push @setting, defined $v ? "$k,$v" : $k;
		}
	    }
	    my @is_hidden = (defined $kills[0] && (exists $detach_map{"*"} || exists $detach_map{"::all"}),
			     defined $kills[1] && (exists $detach_map{lc1459("$tag/*")} || exists $detach_map{lc1459("$tag/::all")}
						   || exists $detach_map{"*"} || exists $detach_map{"::all"}),
			     defined $kills[2] && (exists $detach_map{"*"} || exists $detach_map{"::all"}),
			     (exists $detach_map{"*"} || exists $detach_map{"::all"})
			    );
	    for my $ki (1, 2, 0, 3) {
		if ($is_hidden[$ki]) {
		    unless ($was_unhidden[$ki]) {
			$win->print("Unhiding window $kills[$ki]");
			push @setting, "$kills[$ki],0";
			$was_unhidden[$ki] = 1;
		    }
		    last;
		}
	    }
	    my @is_hidden_aht = (defined $kills[0] && (exists $detach_aht{lc1459($name)}
						       || exists $detach_aht{"*"} || exists $detach_aht{"::all"}),
				 defined $kills[1] && (exists $detach_aht{lc1459("$tag/$active")}
						       || exists $detach_aht{lc1459($active)}
						       || exists $detach_aht{lc1459("$tag/*")} || exists $detach_aht{lc1459("$tag/::all")}
						       || exists $detach_aht{"*"} || exists $detach_aht{"::all"}),
				 defined $kills[2] && (exists $detach_aht{lc1459($active)}
						       || exists $detach_aht{"*"} || exists $detach_aht{"::all"}),
				 (exists $detach_aht{$number} || exists $detach_aht{"*"} || exists $detach_aht{"::all"})
				);
	    for my $ki (1, 2, 0, 3) {
		if ($is_hidden_aht[$ki]) {
		    unless ($was_unhidden[$ki]) {
			$win->print("Unhiding window $kills[$ki], it is hidden because ".(set 'detach_aht')." is ON");
			push @setting, "$kills[$ki],0";
			$was_unhidden[$ki] = 1;
		    }
		    last;
		}
	    }
	
	    if (@setting) {
		Irssi::command("^set ".(set 'detach')." @setting");
	    } else {
		Irssi::command("^set -clear ".(set 'detach'));
	    }
	}
	
	sub ack_window {
	    my ($data, $server, $witem) = @_;
	    my $win = Irssi::active_win;
	    my $number = $win->{refnum};
	    if (grep { $_->{cmd} eq 'ack' } Irssi::commands) {
		my $Orig_Irssi_windows = \&Irssi::windows;
		local *Irssi::windows = sub () { grep { !_is_detached($_, $number) } $Orig_Irssi_windows->() };
		Irssi::command("ack" . (length $data ?  " $data" : ""));
	    } else {
		my $ignore_refnum = Irssi::settings_get_bool('active_window_ignore_refnum');
		my $max_win;
		my $max_act = 0;
		my $max_ref = 0;
		for my $rec (Irssi::windows) {
		    next if _is_detached($rec, $number);
	
		    # ignore refnum
		    if ($ignore_refnum &&
			$rec->{data_level} > 0 && $max_act < $rec->{data_level}) {
			$max_act = $rec->{data_level};
			$max_win = $rec;
		    }
	
		    # windows with lower refnums break ties
		    elsif (!$ignore_refnum &&
			   $rec->{data_level} > 0 &&
			   ($rec->{data_level} > $max_act ||
			    ($rec->{data_level} == $max_act && $rec->{refnum} < $max_ref))) {
			$max_act = $rec->{data_level};
			$max_win = $rec;
			$max_ref = $rec->{refnum};
		    }
		}
		$max_win->set_active if defined $max_win;
	    }
	}
	
	sub refnum_changed {
	    my ($win, $old_refnum) = @_;
	    my @old_setting = split ' ',  $S{detach};
	    my @setting = map {
		my ($k, $v) = (split /(?:,(-?\d+))$/, $_)[0, 1];
		if ($k eq $old_refnum) {
		    $win->{refnum} . (defined $v ? ",$v" : "")
		}
		else {
		    $_
		}
	    } @old_setting;
	    if ("@old_setting" ne "@setting") {
		$S{detach} = "@setting";
		Irssi::settings_set_str(set 'detach', "@setting");
		&setup_changed;
	    }
	    else {
		&wl_changed;
	    }
	}
	
	sub window_destroyed {
	    my ($win) = @_;
	    my @old_setting = split ' ',  $S{detach};
	    my @setting = grep {
		my ($k, $v) = (split /(?:,(-?\d+))$/, $_)[0, 1];
		if ($k eq $win->{refnum}) {
		    0;
		}
		else {
		    1;
		}
	    } @old_setting;
	    if ("@old_setting" ne "@setting") {
		$S{detach} = "@setting";
		Irssi::settings_set_str(set 'detach', "@setting");
		&setup_changed;
	    }
	    else {
		&awins_changed;
	    }
	}
	
	sub stop_mouse_tracking {
	    print STDERR "\e[?1005l\e[?1000l";
	}
	sub start_mouse_tracking {
	    print STDERR "\e[?1000h\e[?1005h";
	}
	sub install_mouse {
	    Irssi::command_bind('mouse_xterm' => 'mouse_xterm');
	    Irssi::command('^bind meta-[M command mouse_xterm');
	    Irssi::signal_add_first('gui key pressed' => 'mouse_key_hook');
	    start_mouse_tracking();
	}
	sub uninstall_mouse {
	    stop_mouse_tracking();
	    Irssi::signal_remove('gui key pressed' => 'mouse_key_hook');
	    Irssi::command('^bind -delete meta-[M');
	    Irssi::command_unbind('mouse_xterm' => 'mouse_xterm');
	}
	
	sub awl_mouse_event {
	    return if $VIEWER_MODE;
	    if ((($_[0] == 3 and $_[3] == 0)
		     || $_[0] == 64 || $_[0] == 65) and
		    $_[1] == $_[4] and $_[2] == $_[5]) {
		my $top = lc $S{placement} eq 'top';
		my ($pos, $line) = @_[1 .. 2];
		unless ($top) {
		    $line -= $screenHeight;
		    $line += $currentLines;
		    $line += $S{mouse_offset};
		}
		else {
		    $line -= $S{mouse_offset};
		}
		$pos -= $sb_base_width_pre;
		return if $line < 0 || $line >= $currentLines;
		if ($_[0] == 64) {
		    Irssi::command('window up');
		}
		elsif ($_[0] == 65) {
		    Irssi::command('window down');
		}
		elsif (exists $mouse_coords{$line}{$pos}) {
		    my $win = $mouse_coords{$line}{$pos};
		    Irssi::command('window ' . $win);
		}
		Irssi::signal_stop;
	    }
	}
	
	sub mouse_scroll_event {
	    return unless $S{mouse_scroll};
	    if (($_[3] == 64 or $_[3] == 65) and
		    $_[0] == $_[3] and $_[1] == $_[4] and $_[2] == $_[5]) {
		my $cmd = 'scrollback goto ' . ($_[3] == 64 ? '-' : '+') . $S{mouse_scroll};
		Irssi::active_win->command($cmd);
		Irssi::signal_stop;
	    }
	    elsif ($_[0] == 64 or $_[0] == 65) {
		Irssi::signal_stop;
	    }
	}
	
	sub mouse_escape {
	    return unless $S{mouse_escape} > 0;
	    if ($_[0] == 3) {
		my $tm = $S{mouse_escape};
		$tm *= 1000 if $tm < 1000;
		stop_mouse_tracking();
		Irssi::timeout_add_once($tm, 'start_mouse_tracking', undef);
		Irssi::signal_stop;
	    }
	}
	
	sub UNLOAD {
	    @actString = ();
	    killOldStatus();
	    stop_viewer() if $VIEWER_MODE;
	    uninstall_mouse() if $MOUSE_ON;
	}
	
	sub addPrintTextHook { # update on print text
	    return unless defined $^S;
	    return if $BLOCK_ALL;
	    return unless $print_text_activity;
	    return if $_[0]->{level} == 262144 and $_[0]->{target} eq ''
		and !defined($_[0]->{server});
	    &wl_changed;
	}
	
	sub block_event_window_change {
	    Irssi::signal_stop;
	}
	
	sub update_awins {
	    my @wins = Irssi::windows;
	    local $BLOCK_ALL = 1;
	    Irssi::signal_add_first('window changed' => 'block_event_window_change');
	    my $bwin =
		my $awin = Irssi::active_win;
	    my $lwin;
	    my $defer_irssi_broken_last;
	    unless ($wins[0]{refnum} == $awin->{refnum}) {
		# special case: more than 1 last win, so /win last;
		# /win last doesn't come back to the current window. eg. after
		# connect & autojoin; we can't handle this situation, bail out
		$defer_irssi_broken_last = 1;
	    }
	    else {
		$awin->command('window last');
		$lwin = Irssi::active_win;
		$lwin->command('window last');
		$defer_irssi_broken_last = $lwin->{refnum} == $bwin->{refnum};
	    }
	    my $awin_counter = 0;
	    Irssi::signal_remove('window changed' => 'block_event_window_change');
	    unless ($defer_irssi_broken_last) {
		# we need to keep the fe-windows code running here
		Irssi::signal_add_priority('window changed' => 'block_event_window_change', -99);
		%awins = %wnmap_exp = ();
		do {
		    Irssi::active_win->command('window up');
		    $awin = Irssi::active_win;
		    $awins{$awin->{refnum}} = undef;
		    ++$awin_counter;
		} until ($awin->{refnum} == $bwin->{refnum} || $awin_counter >= @wins);
		Irssi::signal_remove('window changed' => 'block_event_window_change');
	
		Irssi::signal_add_first('window changed' => 'block_event_window_change');
		for my $key (keys %wnmap) {
		    next unless Irssi::window_find_name($key) || Irssi::window_find_item($key);
		    $awin->command("window goto $key");
		    my $cwin = Irssi::active_win;
		    $wnmap_exp{ $cwin->{refnum} } = $wnmap{$key};
		    $cwin->command('window last')
			if $cwin->{refnum} != $awin->{refnum};
		}
		for my $win (reverse @wins) { # restore original window order
		    Irssi::active_win->command('window '.$win->{refnum});
		}
		$awin->command('window '.$lwin->{refnum}); # restore last win
		Irssi::active_win->command('window last');
		Irssi::signal_remove('window changed' => 'block_event_window_change');
	    }
	    $CHANGED{WL} = 1;
	}
	
	sub resizeTerm {
	    if (defined (my $r = `stty size 2>/dev/null`)) {
		($screenHeight, $screenWidth) = split ' ', $r;
		$CHANGED{SETUP} = 1;
	    }
	    else {
		$CHANGED{SIZE} = 1;
	    }
	}
	
	sub awl_refresh {
	    $globTime = undef;
	    resizeTerm()   if delete $CHANGED{SIZE};
	    reset_awl()    if delete $CHANGED{SETUP};
	    update_awins() if delete $CHANGED{AWINS};
	    update_wl()    if delete $CHANGED{WL};
	}
	
	sub termsize_changed { $CHANGED{SIZE}  = 1; &queue_refresh; }
	sub setup_changed    { $CHANGED{SETUP} = 1; &queue_refresh; }
	sub awins_changed    { $CHANGED{AWINS} = 1; &queue_refresh; }
	sub wl_changed       { $CHANGED{WL}    = 1; &queue_refresh; }
	
	sub window_changed {
	    &awins_changed if $_[1];
	}
	
	sub queue_refresh {
	    return if $BLOCK_ALL;
	    Irssi::timeout_remove($globTime)
		    if defined $globTime; # delay the update further
	    $globTime = Irssi::timeout_add_once(GLOB_QUEUE_TIMER, 'awl_refresh', undef);
	}
	
	sub awl_init {
	    termsize_changed();
	    setup_changed();
	    update_keymap();
	    Irssi::timeout_remove($globTime)
		    if defined $globTime;
	    awl_refresh();
	    termsize_changed();
	}
	
	sub runsub {
	    my $cmd = shift;
	    sub {
		my ($data, $server, $item) = @_;
		Irssi::command_runsub($cmd, $data, $server, $item);
	    };
	}
	
	Irssi::signal_register({
	    'gui mouse' => [qw/int int int int int int/],
	   });
	{ my $broken_expandos = (Irssi::version >= 20081128 && Irssi::version < 20110210)
	      ? sub { my $x = shift; $x =~ s/\$\{cumode_space\}/ /; $x } : undef;
	  Irssi::theme_register([
	    map { $broken_expandos ? $broken_expandos->($_) : $_ }
	    set 'display_nokey'		=>   '$N${cumode_space}$H$C$S',
	    set 'display_key'		=>   '$Q${cumode_space}$H$C$S',
	    set 'display_nokey_visible' => '%2$N${cumode_space}$H$C$S',
	    set 'display_key_visible'	=> '%2$Q${cumode_space}$H$C$S',
	    set 'display_nokey_active'	=> '%1$N${cumode_space}$H$C$S',
	    set 'display_key_active'	=> '%1$Q${cumode_space}$H$C$S',
	    set 'display_header'	=> '%8$C|${N}',
	    set 'name_display'		=> '$0',
	    set 'separator'		=> ' ',
	    set 'separator2'		=> '',
	    set 'abbrev_chars'		=> "~\x{301c}",
	    set 'viewer_item_bg'	=> sb_format_expand('{sb_background}'),
	    set 'title'			=> '\V'.setc().'\:',
	   ]);
	}
	Irssi::settings_add_bool(setc, set 'prefer_name',    0); #
	Irssi::settings_add_int( setc, set 'hide_empty',     0); #
	Irssi::settings_add_int( setc, set 'hide_data',      0); #
	Irssi::settings_add_str( setc, set 'detach',         ''); #
	Irssi::settings_add_int( setc, set 'detach_data',    -3); #
	Irssi::settings_add_bool(setc, set 'detach_aht',     0); #
	Irssi::settings_add_int( setc, set 'hide_name_data', 0); #
	Irssi::settings_add_int( setc, set 'maxlines',       9); #
	Irssi::settings_add_int( setc, set 'maxcolumns',     4); #
	Irssi::settings_add_int( setc, set 'block',          15); #
	Irssi::settings_add_bool(setc, set 'sbar_maxlength', 1); #
	Irssi::settings_add_int( setc, set 'height_adjust',  2); #
	Irssi::settings_add_str( setc, set 'sort',           'refnum'); #
	Irssi::settings_add_str( setc, set 'placement',      'bottom'); #
	Irssi::settings_add_int( setc, set 'position',       0); #
	Irssi::settings_add_bool(setc, set 'all_disable',    1); #
	Irssi::settings_add_bool(setc, set 'viewer',         1); #
	Irssi::settings_add_str( setc, set 'shared_sbar',    'OFF'); #
	Irssi::settings_add_bool(setc, set 'mouse',          0); #
	Irssi::settings_add_str( setc, set 'path', Irssi::get_irssi_dir . '/_windowlist'); #
	Irssi::settings_add_str( setc, set 'custom_xform',   ''); #
	Irssi::settings_add_time(setc, set 'last_line_shade', '0'); #
	Irssi::settings_add_int( setc, set 'mouse_offset',   1); #
	Irssi::settings_add_int( setc, 'mouse_scroll',       3); #
	Irssi::settings_add_int( setc, 'mouse_escape',       1); #
	Irssi::settings_add_str( setc, 'banned_channels',    '');
	Irssi::settings_add_bool(setc, 'banned_channels_on', 1);
	Irssi::settings_add_str( setc, 'fancy_abbrev',       'fancy'); #
	Irssi::settings_add_bool(setc, set 'no_mode_hint',   0); #
	Irssi::settings_add_bool(setc, set 'viewer_launch',  1); #
	Irssi::settings_add_str( setc, set 'viewer_launch_env',  ''); #
	Irssi::settings_add_str( setc, set 'viewer_tmux_position',  'left'); #
	Irssi::settings_add_str( setc, set 'viewer_xwin_command',  'xterm +sb -e %A'); #
	Irssi::settings_add_str( setc, set 'viewer_custom_command',  ''); #
	
	Irssi::signal_add_last({
	    'setup changed'    => 'setup_changed',
	    'print text'       => 'addPrintTextHook',
	    'terminal resized' => 'termsize_changed',
	    'setup reread'     => 'screenFullRedraw',
	    'window hilight'   => 'wl_changed',
	    'command format'   => 'wl_changed',
	});
	Irssi::signal_add({
	    'window changed'	       => 'window_changed',
	    'window item changed'      => 'wl_changed',
	    'window changed automatic' => 'window_changed',
	    'window created'	       => 'awins_changed',
	    'window destroyed'	       => 'window_destroyed',
	    'window name changed'      => 'wl_changed',
	    'window refnum changed'    => 'refnum_changed',
	});
	Irssi::signal_add_last('gui mouse' => 'mouse_escape');
	Irssi::signal_add_last('gui mouse' => 'mouse_scroll_event');
	Irssi::signal_add_last('gui mouse' => 'awl_mouse_event');
	Irssi::command_bind( setc() => runsub(setc()) );
	Irssi::command_bind( setc() . ' redraw' => 'screenFullRedraw' );
	Irssi::command_bind( setc() . ' restart' => 'restartViewerServer' );
	Irssi::command_bind( setc() . ' attach' => 'unhide_window' );
	Irssi::command_bind( setc() . ' detach' => 'hide_window' );
	Irssi::command_bind( setc() . ' ack'    => 'ack_window' );
	
	{
	    my $l = set 'shared';
	    {
		no strict 'refs';
		*{$l} = $awl_shared_empty;
	    }
	    Irssi::statusbar_item_register($l, '$0', $l);
	}
	
	awl_init();
	
	# Mouse script based on irssi mouse patch by mirage
	{ my $mouse_status = -1; # -1:off 0,1,2:filling mouse_combo
	  my @mouse_combo; # 0:button 1:x 2:y
	  my @mouse_previous; # previous contents of mouse_combo
	
	  sub mouse_xterm_off {
	      $mouse_status = -1;
	  }
	  sub mouse_xterm {
	      $mouse_status = 0;
	      Irssi::timeout_add_once(10, 'mouse_xterm_off', undef);
	  }
	
	  sub mouse_key_hook {
	      my ($key) = @_;
	      if ($mouse_status != -1) {
		  if ($mouse_status == 0) {
		      @mouse_previous = @mouse_combo;
			  #if @mouse_combo && $mouse_combo[0] < 64;
		  }
		  $mouse_combo[$mouse_status] = $key - 32;
		  $mouse_status++;
		  if ($mouse_status == 3) {
		      $mouse_status = -1;
		      # match screen coordinates
		      $mouse_combo[1]--;
		      $mouse_combo[2]--;
		      Irssi::signal_emit('gui mouse', @mouse_combo[0 .. 2], @mouse_previous[0 .. 2]);
		  }
		  Irssi::signal_stop;
	      }
	  }
	}
	
	sub string_LCSS {
	    my $str = join "\0", @_;
	    (sort { length $b <=> length $a } $str =~ /(?=(.+).*\0.*\1)/g)[0]
	}
	
	# workaround for issue #271
	{ package Irssi::Nick }
	
	# workaround for issue #572
	@Irssi::UI::Exec::ISA = 'Irssi::Windowitem'
	    if Irssi::version >= 20140822 && Irssi::version <= 20161101 && !@Irssi::UI::Exec::ISA;
	
	UNITCHECK
	{ package AwlViewer;
	  use strict;
	  use warnings;
	  no warnings 'redefine';
	  use Encode;
	  use IO::Socket::UNIX;
	  use IO::Select;
	  use List::Util qw(max);
	  use constant BLOCK_SIZE => 1024;
	  use constant RECONNECT_TIME => 5;
	
	  my $sockpath;
	
	  our $VERSION = '0.8';
	
	  our ($got_int, $resized, $timeout);
	
	  my %vars;
	  my (%c2w, @seqlist);
	  my %mouse_coords;
	  my (@mouse, @last_mouse);
	  my ($err, $sock, $loop);
	  my ($keybuf, $rcvbuf);
	  my @screen;
	  my ($screenHeight, $screenWidth);
	  my ($disp_update, $fs_open, $one_shot_integration, $one_shot_resize);
	  my $integration_position;
	  my $show_title_bar;
	
	  sub connect_it {
	      $sock = IO::Socket::UNIX->new(
		  Type => SOCK_STREAM,
		  Peer => $sockpath,
		 );
	      unless ($sock) {
		  $err = $!;
		  return;
	      }
	      $sock->blocking(0);
	      $loop->add($sock);
	  }
	
	  sub remove_conn {
	      my $fh = shift;
	      $loop->remove($fh);
	      $fh->close;
	      $sock = undef;
	      %vars = ();
	      @screen = ();
	  }
	
	  { package Terminfo; # xterm
	    sub civis      { "\e[?25l" }
	    sub sc	   { "\e7" }
	    sub cup	   { "\e[" . ($_[0] + 1) . ';' . ($_[1] + 1) . 'H' }
	    sub el	   { "\e[K" }
	    sub rc	   { "\e8" }
	    sub cnorm      { "\e[?25h" }
	    sub setab      { "\e[4" . $_[0] . 'm' }
	    sub setaf      { "\e[3" . $_[0] . 'm' }
	    sub setaf16    { "\e[9" . $_[0] . 'm' }
	    sub setab16    { "\e[10" . $_[0] . 'm' }
	    sub setaf256   { "\e[38;5;" . $_[0] . 'm' }
	    sub setab256   { "\e[48;5;" . $_[0] . 'm' }
	    sub sgr0       { "\e[0m" }
	    sub bold       { "\e[1m" }
	    sub it         { "\e[3m" }
	    sub ul         { "\e[4m" }
	    sub blink      { "\e[5m" }
	    sub rev	   { "\e[7m" }
	    sub op	   { "\e[39;49m" }
	    sub exit_bold  { "\e[22m" }
	    sub exit_it    { "\e[23m" }
	    sub exit_ul    { "\e[24m" }
	    sub exit_blink { "\e[25m" }
	    sub exit_rev   { "\e[27m" }
	    sub smcup      { "\e[?1049h" }
	    sub rmcup      { "\e[?1049l" }
	    sub smmouse    { "\e[?1000h\e[?1005h" }
	    sub rmmouse    { "\e[?1005l\e[?1000l" }
	  }
	
	  sub init {
	      $sockpath = shift // "$ENV{HOME}/.irssi/_windowlist";
	      STDOUT->autoflush(1);
	      printf "\r%swaiting for %s...", Terminfo::sc, $::IRSSI{name};
	
	      `stty -icanon -echo`;
	
	      $loop = IO::Select->new;
	      STDIN->blocking(0);
	      $loop->add(\*STDIN);
	
	      $SIG{INT} = sub {
		  $got_int = 1
	      };
	      $SIG{WINCH} = sub {
		  $resized = 1
	      };
	
	      $resized = 3;
	
	      $disp_update = 2;
	
	      $show_title_bar = 1;
	  }
	
	  sub enter_fs {
	      return if $fs_open;
	      safe_print(Terminfo::rc, Terminfo::smcup, Terminfo::civis, Terminfo::smmouse);
	      $fs_open = 1;
	  }
	
	  sub leave_fs {
	      return unless $fs_open;
	      safe_print(Terminfo::rmmouse, Terminfo::cnorm, Terminfo::rmcup);
	      safe_print(sprintf "\r%swaiting for %s...", Terminfo::sc, $::IRSSI{name}) if $_[0];
	
	      $fs_open = 0;
	  }
	
	  sub end_prog {
	      leave_fs();
	      STDIN->blocking(1);
	      `stty sane`;
	      printf "\r%s%sthanks for using %s\n", Terminfo::rc, Terminfo::el, $::IRSSI{name};
	  }
	
	  sub safe_print {
	      my $st = STDIN->blocking(1);
	      print @_;
	      STDIN->blocking($st);
	  }
	
	  sub safe_qx {
	      my $st = STDIN->blocking(1);
	      my $ret = `$_[0]`;
	      STDIN->blocking($st);
	      $ret
	  }
	
	  sub safe_print_sock {
	      return unless $sock;
	      my $was = $sock->blocking(1);
	      $sock->print(@_);
	      $sock->blocking($was);
	  }
	
	  sub process_recv {
	      my $need = 0;
	      while ($rcvbuf =~ s/\n(.+)_BEGIN\n((?: .*\n)*)\1_END\n//) {
		  my $var = lc $1;
		  my $data = $2;
		  my @data = split "\n ", "\n$data ", -1;
		  shift @data; pop @data;
		  my $itembg = $vars{itembg};
		  if ($var =~ s/list$//) {
		      $vars{$var} = \@data;
		  }
		  elsif ($var =~ s/map$//) {
		      $vars{$var} = +{ @data };
		  }
		  else {
		      $vars{$var} = join "\n", @data;
		  }
		  $need = 1 if $var eq 'win';
		  $need = 1 if $var eq 'redraw' && $vars{$var};
		  if (($itembg//'') ne ($vars{itembg}//'')) {
		      $need = $vars{redraw} = 1;
		  }
		  _build_keymap() if $var eq 'key2';
	      }
	      $need
	  }
	
	  { my %ansi_table;
	    my ($i, $j, $k) = (0, 0, 0);
	    my %term_state;
	    sub reset_term_state { my %old_term = %term_state; %term_state = (); %old_term }
	    sub set_term_state { my %old_term = %term_state; %term_state = @_; %old_term }
	    %ansi_table = (
		# fe-common::core::formats.c:format_expand_styles
		(map { my $t = $i++; ($_ => sub { my $n = $term_state{hicolor} ? \&Terminfo::setab16 : \&Terminfo::setab;
						  $n->($t) }) } (split //, '01234567' )),
		(map { my $t = $j++; ($_ => sub { my $n = $term_state{hicolor} ? \&Terminfo::setaf16 : \&Terminfo::setaf;
						  $n->($t) }) } (split //, 'krgybmcw' )),
		(map { my $t = $k++; ($_ => sub { my $n = $term_state{hicolor} ? \&Terminfo::setaf : \&Terminfo::setaf16;
						  $n->($t) }) } (split //, 'KRGYBMCW')),
		# reset
		n => sub { $term_state{hicolor} = 0; my $r = Terminfo::op;
			   for (qw(blink rev bold)) {
			       $r .= Terminfo->can("exit_$_")->() if delete $term_state{$_};
			   }
			   {
			       local $ansi_table{n} = $ansi_table{N};
			       $r .= formats_to_ansi_basic($vars{itembg});
			   }
			   $r
		       },
		N => sub { reset_term_state(); Terminfo::sgr0 },
		# flash/bright
		F => sub { my $n = 'blink'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		# reverse
		8 => sub { my $n = 'rev'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		# bold
		"_" => sub { my $n = 'bold'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		# underline
		U => sub { my $n = 'ul'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		# italic
		I => sub { my $n = 'it'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		# bold, used as colour modifier if AWL_HI9 is set
		9 => $ENV{AWL_HI9} ? sub { $term_state{hicolor} ^= 1; '' }
		    : sub { my $n = 'bold'; my $e = ($term_state{$n} ^= 1) ? $n : "exit_$n"; Terminfo->can($e)->() },
		#      delete                other stuff
		(map { $_ => sub { '' } } (split //, ':|>#[')),
		#      escape
		(map { my $close = $_; $_ => sub { $close } } (split //, '{}%')),
	       );
	    for my $base (0 .. 15) {
		my $close = $base;
		my $idx = ($close&8) | ($close&4)>>2 | ($close&2) | ($close&1)<<2;
		$ansi_table{ (sprintf "x0%x", $close) } =
		    $ansi_table{ (sprintf "x0%X", $close) } =
			sub { Terminfo::setab256($idx) };
		$ansi_table{ (sprintf "X0%x", $close) } =
		    $ansi_table{ (sprintf "X0%X", $close) } =
			sub { Terminfo::setaf256($idx) };
	    }
	    for my $plane (1 .. 6) {
		for my $coord (0 .. 35) {
		    my $close = 16 + ($plane-1) * 36 + $coord;
		    my $ch = $coord < 10 ? $coord : chr( $coord - 10 + ord 'a' );
		    $ansi_table{ "x$plane$ch" } =
			$ansi_table{ "x$plane\U$ch" } =
			    sub { Terminfo::setab256($close) };
		    $ansi_table{ "X$plane$ch" } =
			$ansi_table{ "X$plane\U$ch" } =
			    sub { Terminfo::setaf256($close) };
		}
	    }
	    for my $gray (0 .. 23) {
		my $close = 232 + $gray;
		my $ch = chr( $gray + ord 'a' );
		$ansi_table{ "x7$ch" } =
		    $ansi_table{ "x7\U$ch" } =
			sub { Terminfo::setab256($close) };
		$ansi_table{ "X7$ch" } =
		    $ansi_table{ "X7\U$ch" } =
			sub { Terminfo::setaf256($close) };
	    }
	    sub formats_to_ansi_basic {
		my $o = shift;
		$o =~ s/(%(X..|x..|.))/exists $ansi_table{$2} ? $ansi_table{$2}->() : $1/gex;
		$o
	    }
	  }
	
	  sub _header {
	      my $str = $vars{title} // uc ::setc();
	      my $ccs = qr/%(?:X(?:[1-6][0-9A-Z]|7[A-X])|[0-9BCFGIKMNRUWY_])/i;
	      (my $stripstr = $str) =~ s/($ccs)//g;
	      my $space = int( ((abs $vars{block}) - length $stripstr) / (1 + length $stripstr));
	      if ($space > 0) {
		  my $ss = ' ' x $space;
		  my @x = $str =~ /((?:$ccs)*\X(?:(?:$ccs)*$)?)/g;
		  $str = join $ss, '', @x, '';
	      }
	      ($stripstr = $str) =~ s/($ccs)//g;
	      my $pad = max 0, (abs $vars{block}) - length $stripstr;
	      $str = ' ' x ($pad/2) . $str . ' ' x ($pad/2 + $pad%2);
	      $str
	  }
	
	  sub _add_item {
	      my ($i, $j, $c, $wi, $screen, $mouse) = @_;
	      $screen->[$i][$j] = "%N%n$wi";
	      if (exists $vars{mouse}{$c - 1}) {
		  $mouse->[$i][$j] = $vars{mouse}{$c - 1};
	      }
	  }
	  sub update_screen {
	      $disp_update = 0;
	      unless ($sock && exists $vars{seplen} && exists $vars{block}) {
		  leave_fs(1);
		  return;
	      }
	      enter_fs();
	      @screen = () if delete $vars{redraw};
	      %mouse_coords = ();
	      my $ncols = ($vars{seplen} + abs $vars{block}) ?
		  int( ($screenWidth + $vars{seplen}) / ($vars{seplen} + abs $vars{block}) ) : 0;
	      my $xenl = ($vars{seplen} + abs $vars{block})
		  && $ncols > int( ($screenWidth + $vars{seplen} - 1) / ($vars{seplen} + abs $vars{block}) );
	      my $nrows = $screenHeight - $vars{ha};
	      my @wi = @{$vars{win}//[]};
	      my $max_items = $ncols * $nrows;
	      my $c = $show_title_bar ? 1 : 0;
	      my $items = @wi + $c;
	      my $titems = $items > $max_items ? $max_items : $items;
	      my $i = 0;
	      my $j = 0;
	      my @new_screen;
	      my @new_mouse;
	      $new_screen[0][0] = _header() #. ' ' x $vars{seplen}
		  if $show_title_bar;
	      unless ($nrows > $ncols) { # line layout
		  ++$j if $show_title_bar;
		  for my $wi (@wi) {
		      if ($j >= $ncols) {
			  $j = 0;
			  ++$i;
		      }
		      last if $i >= $nrows;
		      _add_item($i, $j, $show_title_bar ? $c : $c + 1,
				$wi, \@new_screen, \@new_mouse);
		      if ($c + 1 < $titems && $j + 1 < $ncols) {
			  $new_screen[$i][$j] .= $vars{separator};
		      }
		      ++$j;
		      ++$c;
		  }
	      }
	      else { # column layout
		  ++$i if $show_title_bar;
		  for my $wi (@wi) {
		      if ($i >= $nrows) {
			  $i = 0;
			  ++$j;
		      }
		      last if $j >= $ncols;
		      _add_item($i, $j, $show_title_bar ? $c : $c + 1,
				$wi, \@new_screen, \@new_mouse);
		      if ($c + $nrows < $titems) {
			  $new_screen[$i][$j] .= $vars{separator};
		      }
		      ++$i;
		      ++$c;
		  }
	      }
	      my $step = $vars{seplen} + abs $vars{block};
	      $i = 0;
	      my $str = Terminfo::sc . Terminfo::sgr0;
	      for (my $i = 0; $i < @new_screen; ++$i) {
		  for (my $j = 0; $j < @{$new_screen[$i]}; ++$j) {
		      if (defined $new_mouse[$i] && defined $new_mouse[$i][$j]) {
			  my $from = $j * $step;
			  $mouse_coords{$i}{$_} = $new_mouse[$i][$j]
			      for $from .. $from + abs $vars{block};
		      }
		      next if defined $screen[$i] && defined $screen[$i][$j]
			  && $screen[$i][$j] eq $new_screen[$i][$j];
		      $str .= Terminfo::cup($i, $j * $step)
			   .  formats_to_ansi_basic($new_screen[$i][$j])
			   .  Terminfo::sgr0;
		      $str .= Terminfo::el if $j == $#{$new_screen[$i]} && (!$xenl || $j + 1 != $ncols);
		  }
	      }
	      for (@new_screen .. $screenHeight - 1) {
		  if (!@screen || defined $screen[$_]) {
		      $str .= Terminfo::cup($_, 0) . Terminfo::sgr0 . Terminfo::el;
		  }
	      }
	      $str .= Terminfo::rc;
	      safe_print $str;
	      @screen = @new_screen;
	  }
	
	  sub handle_resize {
	      if (defined (my $r = safe_qx('stty size'))) {
		  ($screenHeight, $screenWidth) = split ' ', $r;
		  $resized = 0;
		  @screen = ();
		  $disp_update = 1;
		  if ($one_shot_integration == 2) {
		      $one_shot_resize--;
		  }
	      }
	      else {
	      }
	  }
	
	  sub _build_keymap {
	      %c2w = reverse( %{$vars{key}}, %{$vars{key2}} );
	      if (!grep { /^[+-]./ } keys %c2w) {
		  %c2w = (%c2w, map { ("-$_" => $c2w{$_}) } grep { !/^\^./ } keys %c2w);
	      }
	      %c2w = map {
		  my $key = $_;
		  s{^(-)?(\+)?(\^)?(.)}{
		      join '', (
			  ($1 ? "\e" : ''),
			  ($2 ? "\e\e" : ''),
			  ($3 ? "$4"^"@" : $4)
			 )
		  }e;
		  $_ => $c2w{$key}
	      } keys %c2w;
	      @seqlist = sort { length $b <=> length $a } keys %c2w;
	  }
	
	  sub _match_tmux {
	      length $ENV{TMUX} && exists $vars{irssienv}{tmux_srv} && length $vars{irssienv}{tmux_pane}
		  && $ENV{TMUX} eq $vars{irssienv}{tmux_srv}
	  }
	
	  sub process_keys {
	      Encode::_utf8_on($keybuf);
	      my $win;
	      my $use_mouse;
	      my $maybe;
	  KEY: while (length $keybuf && !$maybe) {
		  $maybe = 0;
		  if ($keybuf =~ s/^\e\[M(.)(.)(.)//) {
		      @last_mouse = @mouse;# if @mouse && $mouse[0] < 64;
		      @mouse = map { -32 + ord } ($1, $2, $3);
		      $use_mouse = 1;
		      next KEY;
		  }
		  for my $s (@seqlist) {
		      if ($keybuf =~ s/^\Q$s//) {
			  $win = $c2w{$s};
			  $use_mouse = 0;
			  next KEY;
		      }
		      elsif (length $keybuf < length $s && $s =~ /^\Q$keybuf/) {
			  $maybe = 1;
		      }
		  }
		  unless ($maybe) {
		      substr $keybuf, 0, 1, '';
		  }
	      }
	      if ($use_mouse && @mouse && @last_mouse &&
		      $mouse[2] == $last_mouse[2] &&
			  $mouse[1] == $last_mouse[1] &&
			      ($mouse[0] == 3 || $mouse[0] == 64 || $mouse[0] == 65)) {
		  if ($mouse[0] == 64) {
		      $win = 'up';
		  }
		  elsif ($mouse[0] == 65) {
		      $win = 'down';
		  }
		  elsif (exists $mouse_coords{$mouse[2] - 1}{$mouse[1] - 1}) {
		      $win = $mouse_coords{$mouse[2] - 1}{$mouse[1] - 1};
		  }
		  elsif ($mouse[2] == 1 && $mouse[1] <= abs $vars{block}) {
		      $win = $last_mouse[0] != 0 ? 'last' : 'active';
		  }
		  else {
		  }
	      }
	      if (defined $win) {
		  $win =~ s/^_//;
		  safe_print_sock("$win\n");
		  if (!exists $ENV{AWL_AUTOFOCUS} || $ENV{AWL_AUTOFOCUS}) {
		      if (_match_tmux()) {
			  safe_qx("tmux selectp -t $vars{irssienv}{tmux_pane} 2>&1");
		      }
		      elsif (exists $vars{irssienv}{xwinid}) {
			  safe_qx("wmctrl -ia $vars{irssienv}{xwinid} 2>/dev/null");
		      }
		  }
	      }
	      Encode::_utf8_off($keybuf);
	  }
	
	  sub check_integration {
	      return unless $vars{irssienv};
	      return unless $sock && exists $vars{seplen} && exists $vars{block};
	      if ($one_shot_integration == 1) {
		  my $nrows = $screenHeight - $vars{ha};
		  my $ncols = ($vars{seplen} + abs $vars{block}) ? int( ($screenWidth + $vars{seplen}) / ($vars{seplen} + abs $vars{block}) ) : 0;
		  my $items = ($show_title_bar ? 1 : 0) + @{$vars{win}//[]};
		  my $dcols_required = $nrows ? int($items/$nrows) + !!($items%$nrows) : 0;
		  my $rows_required = $ncols ? int($items/$ncols) + !!($items%$ncols) : 0;
		  $rows_required = abs $vars{ml}
		      if ($vars{ml} < 0 || ($vars{ml} > 0 && $rows_required > $vars{ml}));
		  $dcols_required = abs $vars{mc}
		      if ($vars{mc} < 0 || ($vars{mc} > 0 && $dcols_required > $vars{mc}));
		  my $rows = $rows_required + $vars{ha};
		  my $cols = ($dcols_required * ($vars{seplen} + abs $vars{block})) - $vars{seplen};
		  if (_match_tmux()) {
		      # int( ($screenWidth + $vars{seplen}) / ($vars{seplen} + abs $vars{block}) );
		      my ($pos_flag, $before);
		      if ($integration_position eq 'left') {
			  $pos_flag = 'h';
			  $before = 1;
		      }
		      elsif ($integration_position eq 'top') {
			  $pos_flag = 'v';
			  $before = 1;
		      }
		      elsif ($integration_position eq 'right') {
			  $pos_flag = 'h';
		      }
		      else {
			  $pos_flag = 'v';
		      }
		      my @cmd = "joinp -d$pos_flag -s $ENV{TMUX_PANE} -t $vars{irssienv}{tmux_pane}";
		      push @cmd, "swapp -d -t $ENV{TMUX_PANE} -s $vars{irssienv}{tmux_pane}"
			  if $before;
		      $cols = max($cols, 2);
		      $rows = max($rows, 2);
	
		      safe_qx("tmux " . (join " \\\; ", @cmd) . " 2>&1");
		  }
		  else {
		      $resized = 1;
		      #safe_qx("resize -s $screenHeight $cols 2>&1")
			#  if $cols > 0;
		  }
		  $one_shot_integration++;
		  if ($resized == 1) {
		      handle_resize();
		      resize_integration();
		  }
	      }
	      elsif ($one_shot_integration == 2) {
		  resize_integration(1);
	      }
	  }
	
	  sub resize_integration {
	      return unless $one_shot_integration;
	      return unless ($one_shot_resize//0) < 0 || shift;
	      return if ($one_shot_resize//0) > 0;
	
	      my $nrows = $screenHeight - $vars{ha};
	      my $ncols = ($vars{seplen} + abs $vars{block}) ? int( ($screenWidth + $vars{seplen}) / ($vars{seplen} + abs $vars{block}) ) : 0;
	      my $items = ($show_title_bar ? 1 : 0) + @{$vars{win}//[]};
	      my $dcols_required = $nrows ? (int($items/$nrows) + !!($items%$nrows)) : 0;
	      my $rows_required = $ncols ? int($items/$ncols) + !!($items%$ncols) : 0;
	      $rows_required = abs $vars{ml}
		  if ($vars{ml} < 0 || ($vars{ml} > 0 && $rows_required > $vars{ml}));
	      $dcols_required = abs $vars{mc}
		  if ($vars{mc} < 0 || ($vars{mc} > 0 && $dcols_required > $vars{mc}));
	      my $rows = $rows_required + $vars{ha};
	      my $cols = ($dcols_required * ($vars{seplen} + abs $vars{block})) - $vars{seplen};
	      if (_match_tmux()) {
		  my $pos_flag;
		  my $before = 0;
		  if ($integration_position eq 'left') {
		      $pos_flag = 'h';
		      $before = 1;
		  }
		  elsif ($integration_position eq 'top') {
		      $pos_flag = 'v';
		      $before = 1;
		  }
		  elsif ($integration_position eq 'right') {
		      $pos_flag = 'h';
		  }
		  else {
		      $pos_flag = 'v';
		  }
		  my @cmd;
		  # hard tmux limits
		  $cols = max($cols, 2);
		  $rows = max($rows, 2);
		  if ($pos_flag eq 'h' && $cols != $screenWidth) {
		      my $change = $screenWidth - $cols;
		      my $dir = ($before ^ ($change<0)) ? 'L' : 'R';
		      push @cmd, "resizep -$dir -t $ENV{TMUX_PANE} @{[abs $change]}";
		      #push @cmd, "resizep -x $cols -t $ENV{TMUX_PANE}";
		      $one_shot_resize = 1;
		  }
		  if ($pos_flag eq 'v' && $rows != $screenHeight) {
		      #push @cmd, "resizep -y $rows -t $ENV{TMUX_PANE}";
		      my $change = $screenHeight - $rows;
		      my $dir = ($before ^ ($change<0)) ? 'U' : 'D';
		      push @cmd, "resizep -$dir -t $ENV{TMUX_PANE} @{[abs $change]}";
		      $one_shot_resize = 1;
		  }
	
		  safe_qx("tmux " . (join " \\\; ", @cmd) . " 2>&1")
		      if @cmd;
	      }
	      else {
		  $cols = max($cols, 1);
		  $rows = max($rows, 1);
		  unless ($nrows > $ncols) { # line layout
		      if ($rows != $screenHeight) {
			  safe_qx("resize -s $rows $screenWidth 2>&1");
			  $one_shot_resize = 1;
		      }
		  }
		  else {
		      if ($cols != $screenWidth) {
			  safe_qx("resize -s $screenHeight $cols 2>&1");
			  $one_shot_resize = 1;
		      }
		  }
	      }
	      if ($resized == 1) {
		  handle_resize();
	      }
	  }
	
	  sub init_integration {
	      return unless $one_shot_integration;
	      if (_match_tmux()) {
	      }
	      else {
	      }
	      safe_print("\e]2;".(uc ::setc())."\e\\");
	  }
	
	  sub main {
	      require Getopt::Std;
	      my %opts;
	      Getopt::Std::getopts('1p:', \%opts);
	      my $one_shot = $opts{1};
	      $integration_position = $opts{p};
	      $one_shot_integration = 0+!!$one_shot;
	      #shift if @_ && $_[0] eq '--';
	      &init;
	      $show_title_bar = 0 if $ENV{AWL_NOTITLE};
	      init_integration();
	      until ($got_int) {
		  $timeout = undef;
		  if ($resized) {
		      if ($resized == 1) {
			  $timeout = 1;
			  $resized++;
		      }
		      else {
			  handle_resize();
			  resize_integration();
		      }
		  }
		  unless ($sock || $timeout) {
		      connect_it();
		  }
		  $timeout ||= RECONNECT_TIME unless $sock;
		  update_screen() if $disp_update;
	      SELECT: while (my @read = $loop->can_read($timeout)) {
		      for my $fh (@read) {
			  if ($fh == \*STDIN) {
			      if (read STDIN, my $buf, BLOCK_SIZE) {
				  do {
				      $keybuf .= $buf;
				  } while read STDIN, $buf, BLOCK_SIZE;
			      }
			      else {
				  $got_int = 1;
				  last SELECT;
			      }
			  }
			  else {
			      if ($fh->read(my $buf, BLOCK_SIZE)) {
				  do {
				      $rcvbuf .= $buf;
				  } while $fh->read($buf, BLOCK_SIZE);
			      }
			      else {
				  $disp_update = 1;
				  remove_conn($fh);
				  if ($one_shot) {
				      $got_int = 1;
				      last SELECT;
				  }
				  $timeout ||= RECONNECT_TIME;
			      }
			  }
		      }
		      $disp_update |= process_recv() if length $rcvbuf;
		      process_keys() if length $keybuf;
		      check_integration() if $one_shot;
		      update_screen() if $disp_update;
		  }
		  continue {
		  }
	      }
	      end_prog();
	  }
	}
	
	1;
	
	# Changelog
	# =========
	# 1.8
	# - use string_width in Irssi 1.2.0
	#
	# 1.7
	# - fix crash on invalid /set awl_sort, introduced in 1.6, reported by
	#   tpetazzoni
	# - delay viewer initialisation
	# - improve race condition on tmux resize integration
	#
	# 1.6
	# - add detach setting to hide windows
	# - fix race condition when loading the script, reported by madduck
	# - improve compatibility with irssi 1.2
	# - add special value lru to awl_sort to sort windows by usage
	#
	# 1.5
	# - improve compat. with sideways splits
	#
	# 1.4
	# - fix line wrapping in some themes, reported by justanotherbody
	# - fix named window key detection, reported by madduck
	# - make title (in viewer and shared_sbar) configurable
	#
	# 1.3
	# - workaround for irssi issue #572
	#
	# 1.2
	# - new format to choose abbreviation character
	#
	# 1.1
	# - infinite loop on shortening certain window names reported by Kalan
	#
	# 1.0
	# - new awl_viewer_launch setting and an array of related settings
	# - fixed regression bug /exec -interactive
	# - fixed some warnings in perl 5.10 reported by kl3
	# - workaround for crash due to infinite recursion in irssi's Perl
	#   error handling
	#
	# 0.9
	# - fix endless loop in awin detection code!
	# - correct colour swap in awl_viewer
	# - fix passing of alternate socket path to the viewer
	# - potential undefinedness in mouse refnum hinted at by Canopus
	# - fixed regression bug /exec -interactive
	# - add case-insensitive modifier to awl_sort
	# - run custom_xform on awl_prefer_name also
	# - avoid inconsistent active window state after awin detection
	#   reported by ss
	# - revert %9-hack in the viewer prompted by discussion with pierrot
	# - fix new warning in perl 5.22
	#
	# 0.8
	# - replace fifo mode with external viewer script
	# - remove bundled cpan modules
	# - work around bogus irssi warning
	# - improve mouse support
	# - workaround for broken cumode in irssi 0.8.15
	# - fix handling of non-meta windows (uninitialized warning)
	# - add 256 colour support, strip true colour codes
	# - fix totally bogus $N padding reported by Ed S.
	# - make /window goto #name mappings work but ignore non-existant ones
	# - improve incomplete reads reported by bcode
	# - fix single % in awl_viewer reported by bcode
	# - add support for key bindings by nike and ferret
	# - coerce utf8 key binds
	# - add settings: custom_xform, last_line_shade, hide_name_data
	# - abbreviations were broken in some cases
	# - fix some misuse of / as cmdchar in mouse script reported by bcode
	# - add shared status bar mode
	# - ${type} variables for custom_xform setting
	# - crash if custom_xform had runtime error
	# - update sorting documentation
	# - fix odd case in size calculation noted by lasers
	# - add missing font styles to the viewer reported by ishanyx
	# - add italic
	#
	# 0.7g
	# - remove screen support and replace it with fifo support
	# - add double-width support to the shortener
	# - correct documentation regarding $T vs. display_header
	# - add missing refresh for window item changed (thanks vague)
	# - add visible windows
	# - add exemptions for active window
	# - workaround for hiding the window changes from trackbar
	# - hack to force 16colours in screen mode
	# - remember last window (reported by earthnative)
	# - wrong window focus on new queries (reported by emsid)
	# - dataloss bug on trying to remember last window
	#
	# 0.6d+
	# - add support for network headers
	# - fixed regression bug /exec -interactive
	#
	# 0.6ca+
	# - add screen support (from nicklist.pl)
	# - names can now have a max length and window names can be used
	# - fixed a bug with block display in screen mode and status bar mode
	# - added space handling to ir_fe and removed it again
	# - now handling formats on my own
	# - started to work on $tag display
	# - added warning about missing sb_act_none abstract leading to
	# - display*active settings
	# - added warning about the bug in awl_display_(no)key_active settings
	# - mouse hack
	#
	# 0.5d
	# - add setting to also hide the last status bar if empty (awl_all_disable)
	# - reverted to old utf8 code to also calculate broken utf8 length correctly
	# - simplified dealing with status bars in wlreset
	# - added a little tweak for the renamed term_type somewhere after Irssi 0.8.9
	# - fixed bug in handling channel #$$
	# - reset background colour at the beginning of an entry
	#
	# 0.4d
	# - fixed order of disabling status bars
	# - several attempts at special chars, without any real success
	#   and much more weird new bugs caused by this
	# - setting to specify sort order
	# - reduced timeout values
	# - added awl_hide_data
	# - make it so the dynamic sub is actually deleted
	# - fix a bug with removing of the last separator
	# - take into consideration parse_special
	#
	# 0.3b
	# - automatically kill old status bars
	# - reset on /reload
	# - position/placement settings
	#
	# 0.2
	# - automated retrieval of key bindings (thanks grep.pl authors)
	# - improved removing of status bars
	# - got rid of status chop
	#
	# 0.1
	# - Based on chanact.pl which was apparently based on lightbar.c and
	#   nicklist.pl with various other ideas from random scripts.