infodir=usr/share/info

post_install() {
	[ -x usr/bin/install-info ] || return 0
	install-info $infodir/screen.info.gz $infodir/dir 2>/dev/null
}

post_upgrade() {
	post_install $1
	if [ $(vercmp $2 4.0.3-15) -lt 0 ]; then
		echo 'The location of the screen sockets has changed.'
		echo 'If you need to access running screen sessions, run'
		echo '  # SCREENDIR=/tmp/screens/S-$USER/ screen ...'
	fi
}

pre_remove() {
	[ -x usr/bin/install-info ] || return 0
	install-info --delete $infodir/screen.info.gz $infodir/dir 2>/dev/null
}