_athrun () {
    COMPREPLY=()
    local cur="${COMP_WORDS[$COMP_CWORD]}"

    if [ $COMP_CWORD -eq 1 ]; then
	local IFS=$'\n'
	COMPREPLY=( $(cd /mit 2>/dev/null && compgen -f -- "$cur") )
    elif [ $COMP_CWORD -eq 2 ]; then
	local IFS=$'\n'
	COMPREPLY=( $(dir="$(eval "athdir /mit/${COMP_WORDS[1]}")" && \
	    cd "$dir" && compgen -f -- "$cur") )
    else
	COMP_WORDS[1]=-dummy
	_command
    fi
}
complete -F _athrun $filenames athrun