lightdm-webkit2-greeter/web-greeter/dist/web-greeter-bash

#!/usr/bin/env bash
# bash completion for web-greeter

_web-greeter() {
	local cur="${COMP_WORDS[COMP_CWORD]}"
	local last="${COMP_WORDS[COMP_CWORD - 1]}"
	local xpat='!*.jpg'
	local options='--debug -d --normal -n --mode --list --theme --help -h --version -v --api-version'

	for word in "${COMP_WORDS[@]}"; do
		case "${word}" in
			--debug | --normal | -d | -n | --mode)
				options=$(echo "${options}" | sed 's/--normal\|-n//g')
				options=$(echo "${options}" | sed 's/--debug\|-d//g')
				options=$(echo "${options}" | sed 's/--mode//g')
				;;
		esac
	done

	case "${last}" in
		--theme)
			_filedir
			options=$(ls -1d /usr/share/web-greeter/themes/*/ | cut -c 1- |
				rev | cut -c 2- | rev | sort | sed 's/\/usr\/share\/web-greeter\/themes\///')
			;;
		--mode)
			options="debug normal"
			;;
	esac

	COMPREPLY+=( $(compgen -W "${options}" -- "${cur}") )
}

complete -F _web-greeter web-greeter