alias which-command="type -fP "
function add-alias-to-bash-completion-code() {
local CMD=$(printf "%s" "sed '" 's/\(complete\W.*-F\W.*' "$1" '.*$\)/\1 ' "$2/g'")
[[ -r "$3" ]] && CMD="$CMD -i $3"
[[ -n "$4" ]] && CMD="$4 $CMD"
eval "$CMD"
}