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#!/usr/bin/env perl
use strict;
use warnings;
use JSON;
my ($sig) = @ARGV;
my $pid = get_pid();
kill $sig, $pid;
sub get_pid {
my $window_id = get_window_id();
die "couldn't find window" unless defined $window_id;
my $prop = `xprop -id $window_id _NET_WM_PID`;
chomp($prop);
$prop =~ s/^_NET_WM_PID\(CARDINAL\) = //;
return $prop;
}
sub get_window_id {
return find(decode_json(`i3-msg -t get_tree`))->{window};
}
sub find {
my ($t) = @_;
if ($t->{focused}) {
return $t;
}
for my $subtree (@{ $t->{nodes} }, @{ $t->{floating_nodes} }) {
my $found = find($subtree);
return $found if $found;
}
return;
}
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