nix/home/program/bash/module/Help.nix

{ ... }: {
	text = ''
		# Get help about dotfiles bash function.
		# Usage: help <FUNCTION>
		function help() {
			local fun="''${1}"

			if [[ "''${fun}" = "" ]] || [[ "$(find_function | grep ''${fun})" = "" ]]; then
				help help
				return 2
			fi

			cat /etc/bashrc | sed -n -e "/^function ''${fun}()/q;p" | tac | sed -n -e "/^[^#]/q;p" | tac | sed -e "s/^# \+//" -e "\$i \ " | sed "1{/^$/d}" | sed "1{/^ *$/d}"
		}

		# Short for help.
		# Usage: h <FUNCTION>
		function h() {
			help "''${@}"
		}

		# Autocomplete with available functions.
		function _help_functions() {
			_autocomplete_first $(find_function)
		}

		complete -F _help_functions help h
	'';
}