Adding upstream version 20231031.upstream/20231031upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2988 insertions, 0 deletions

diff --git a/scripts/adv_windowlist.pl b/scripts/adv_windowlist.pl
new file mode 100644
index 0000000..839814e
--- /dev/null
+++ b/scripts/adv_windowlist.pl
@@ -0,0 +1,2988 @@
+use strict;
+use warnings;
+
+our $VERSION = '1.11'; # 28b8dcf69e0355e
+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+# the fifo (screen) has been replaced by an external viewer script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_custom_key_re <regex>
+# * regex : which symbolic key names to show in $Q (for example F-keys)
+#
+# /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 $custom_key_re = qr/(?!)/;
+my ($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} == MSGLEVEL_CLIENTCRAP 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} == MSGLEVEL_CLIENTCRAP 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/-//);
+		if (not defined $key and $nkey =~ /^($custom_key_re)$/) {
+		    $key = $nkey;
+		}
+		$ctl = '' if !$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},
+		tc => $S{true_colour},
+	       );
+	    $viewer{client_settings} = 1;
+	}
+	unless ($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};
+    my $was_custom_key = $S{custom_key_re} // '';
+    %S = (
+	sort	      => Irssi::settings_get_str( set 'sort'),
+	fancy_abbrev  => Irssi::settings_get_str('fancy_abbrev'),
+	xform	      => Irssi::settings_get_str( set 'custom_xform'),
+	block	      => Irssi::settings_get_int( set 'block'),
+	banned_on     => Irssi::settings_get_bool('banned_channels_on'),
+	prefer_name   => Irssi::settings_get_bool(set 'prefer_name'),
+	hide_data     => Irssi::settings_get_int( set 'hide_data'),
+	hide_name     => Irssi::settings_get_int( set 'hide_name_data'),
+	hide_empty    => Irssi::settings_get_int( set 'hide_empty'),
+	custom_key_re => Irssi::settings_get_str( set 'custom_key_re'),
+	detach        => Irssi::settings_get_str( set 'detach'),
+	detach_data   => Irssi::settings_get_int( set 'detach_data'),
+	detach_aht    => Irssi::settings_get_bool(set 'detach_aht'),
+	sbar_maxlen   => Irssi::settings_get_bool(set 'sbar_maxlength'),
+	placement     => Irssi::settings_get_str( set 'placement'),
+	position      => Irssi::settings_get_int( set 'position'),
+	maxlines      => Irssi::settings_get_int( set 'maxlines'),
+	maxcolumns    => Irssi::settings_get_int( set 'maxcolumns'),
+	all_disable   => Irssi::settings_get_bool(set 'all_disable'),
+	height_adjust => Irssi::settings_get_int( set 'height_adjust'),
+	mouse_offset  => Irssi::settings_get_int( set 'mouse_offset'),
+	mouse_scroll  => Irssi::settings_get_int( 'mouse_scroll'),
+	mouse_escape  => Irssi::settings_get_int( 'mouse_escape'),
+	line_shade    => Irssi::settings_get_time(set 'last_line_shade'),
+	no_mode_hint  => Irssi::settings_get_bool(set 'no_mode_hint'),
+	true_colour   => Irssi::parse_special('$colors_ansi_24bit'),
+	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: '.$1;
+	    }
+	}
+    }
+    if ($was_custom_key ne $S{custom_key_re}) {
+	my $custom_key = $S{custom_key_re};
+	my $was_custom_key_re = $custom_key_re;
+	local $@;
+	eval { $custom_key_re = qr/(?i)$custom_key/; 1 }
+	    or do {
+		print '%_'.(set 'custom_key_re').'%_ did not compile: '
+		    . do { $@ =~ /(.*) at / && $1 };
+		$custom_key_re = qr/(?!)/;
+	    };
+	if ($was_custom_key_re ne $custom_key_re) {
+	    update_keymap();
+	}
+    }
+
+    my $new_settings = join "\n", $VIEWER_MODE
+	 ? ("\\", $S{block}, $S{height_adjust}, $S{maxlines}, $S{maxcolumns}, $S{true_colour})
+	 : ("!", $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} == MSGLEVEL_CLIENTNOTICE 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_str( setc, set 'custom_key_re',  'f\d+'); #
+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 = (-1, -1, -1); # 0:button 1:x 2:y
+  my @mouse_previous = (-1, -1, -1); # 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 setafrgb   { "\e[38;2;" . $_[0] . ';' . $_[1] . ';' . $_[2] . 'm' }
+    sub setabrgb   { "\e[48;2;" . $_[0] . ';' . $_[1] . ';' . $_[2] . '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) };
+    }
+    # fe-windows.c:color_24bit_256
+    my $cc = sub {
+	use integer;
+
+	my $cstep_size = 40;
+	my $cstep_start = 0x5f;
+
+	my $gstep_size = 10;
+	my $gstep_start = 0x08;
+
+	my @dist = (0) x 3;
+	my @r; my @gr;
+
+	for (my $i = 0; $i < 3; ++$i) {
+	    my $n = $_[$i];
+	    $gr[$i] = -1;
+	    if ($n < $cstep_start /2) {
+		$r[$i] = 0;
+		$dist[$i] = -$cstep_size/2;
+	    }
+	    else {
+		$r[$i] = 1+(($n-$cstep_start + $cstep_size /2)/$cstep_size);
+		$dist[$i] = (($n-$cstep_start + $cstep_size /2)% $cstep_size - $cstep_size/2);
+	    }
+	    if ($n < $gstep_start /2) {
+		$gr[$i] = -1;
+	    }
+	    else {
+		$gr[$i] = (($n-$gstep_start + $gstep_size /2)/$gstep_size);
+	    }
+	}
+	if ($r[0] == $r[1] && $r[1] == $r[2] &&
+	    4*abs($dist[0]) < $gstep_size && 4*abs($dist[1]) < $gstep_size && 4*abs($dist[2]) < $gstep_size) {
+	    # skip gray detection
+	}
+	else {
+	    my $j = $r[1] == $r[2] ? 0 : 1;
+	    if (($r[0] == $r[1] || $r[$j] == $r[2]) && abs($r[$j]-$r[($j+1)% 3]) <= 1) {
+		my $k = $gr[1] == $gr[2] ? 0 : 1;
+		if (($gr[0] == $gr[1] || $gr[$k] == $gr[2]) && abs($gr[$k]-$gr[($k+1)% 3]) <= 2) {
+		    if ($gr[$k] < 0) {
+			$r[0] = $r[1] = $r[2] = 0;
+		    }
+		    elsif ($gr[$k] > 23) {
+			$r[0] = $r[1] = $r[2] = 5;
+		    }
+		    else {
+			$r[0] = 6;
+			$r[1] = ($gr[$k] / 6);
+			$r[2] = $gr[$k]% 6;
+		    }
+		}
+	    }
+	}
+	return 16 + $r[0]*36 + $r[1] * 6 + $r[2];
+    };
+    $ansi_table{z} = sub {
+	my ($r, $g, $b) = map { hex } unpack '(A2)*', $_[0];
+	$vars{tc} eq 'ON' ? Terminfo::setabrgb($r, $g, $b) : Terminfo::setab256($cc->($r, $g, $b));
+    };
+    $ansi_table{Z} = sub {
+	my ($r, $g, $b) = map { hex } unpack '(A2)*', $_[0];
+	$vars{tc} eq 'ON' ? Terminfo::setafrgb($r, $g, $b) : Terminfo::setaf256($cc->($r, $g, $b));
+    };
+    sub formats_to_ansi_basic {
+	my $o = shift;
+	$o =~ s{(%((Z|z)(......)|X..|x..|.))}{
+	    if ($ansi_table{$2}) { $ansi_table{$2}->() }
+	    elsif ($ansi_table{$3}) { $ansi_table{$3}->($4) }
+	    else { $1 }
+	}gex;
+	$o
+    }
+  }
+
+  sub _header {
+      my $str = $vars{title} // uc ::setc();
+      my $ccs = qr/%(?:Z(?:[0-9A-F]{6})|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
+# =========
+# 1.11
+# - fix compat with Irssi 1.4
+#
+# 1.10
+# - add /set awl_custom_key_re, to display custom keys in the $Q
+#   expando. requested by madduck
+#
+# 1.9.1
+# - fix crash on mouse click
+#
+# 1.9
+# - add %Z support to viewer
+#
+# 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.