/usr/share/bash-completion/completions/tunelp is in util-linux 2.25.2-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52  | _tunelp_module()
{
	local cur prev OPTS
	COMPREPLY=()
	cur="${COMP_WORDS[COMP_CWORD]}"
	prev="${COMP_WORDS[COMP_CWORD-1]}"
	case $prev in
		'-i'|'--irq'|'-c'|'--chars')
			COMPREPLY=( $(compgen -W "number" -- $cur) )
			return 0
			;;
		'-t'|'--time')
			COMPREPLY=( $(compgen -W "milliseconds" -- $cur) )
			return 0
			;;
		'-w'|'--wait')
			COMPREPLY=( $(compgen -W "microseconds" -- $cur) )
			return 0
			;;
		'-a'|'--abort'|'-o'|'--check-status'|'-C'|'--careful'|'-T'|'--trust-irq'|'-q'|'--print-irq')
			COMPREPLY=( $(compgen -W "off on" -- $cur) )
			return 0
			;;
		'-h'|'--help'|'-V'|'--version')
			return 0
			;;
	esac
	case $cur in
		-*)
			OPTS="--irq
				--time
				--chars
				--wait
				--abort
				--check-status
				--careful
				--status
				--trust-irq
				--reset
				--print-irq
				--help
				--version"
			COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
			return 0
			;;
	esac
	local IFS=$'\n'
	compopt -o filenames
	COMPREPLY=( $(compgen -f -- ${cur:-"/dev/lp"}) )
	return 0
}
complete -F _tunelp_module tunelp
 |