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#!/usr/bin/perl

use warnings;
use strict;

use Irssi qw/settings_get_str settings_set_str signal_emit signal_add_last/;

our $VERSION = "0.1";
our %IRSSI = (
	authors     => 'Urchlay',
	contact     => 'Urchlay on NewNet',
	name        => 'help_path_completion',
	description => 'Support /help word completion for files in help_path',
	license     => 'Same as Perl',
	url         => 'none',
);

sub complete_word {
	my ($complist, $window, $word, $linestart, $want_space) = @_;
	return unless $linestart =~ m{/help}i;

	for(split /:/, settings_get_str('help_path')) {
		opendir my $dir, $_ or next;
		push @$complist, grep { $_ !~ /\./ && $_ =~ /$word/i } readdir($dir);
		closedir $dir;
	}
}

# Add per-user help dir to help_path, if not already present.
sub init_help_path {
	my $dir = "$ENV{HOME}/.irssi/help";
	my $help_path = settings_get_str('help_path');

	return if grep { $_ eq $dir } split /:/, $help_path;

	$help_path .= ":$dir";
	settings_set_str('help_path', $help_path);

	signal_emit('setup changed');
}

init_help_path();
signal_add_last("complete word", \&complete_word);