.zshrc terminfo bad substitution

Question

Hi guys,
I just started playing around with zsh and have run into a bit of a problem when setting key bindings. I am following the tutorial on wiki page (https://wiki.archlinux.org/index.php/Zsh#Key_bindings), but am getting a bad substitution error on the first assignment of terminfo variable
key[Home]=${terminfo[khome]}
This is my whole .zshrc:
autoload -U compinit promptinit
compinit
promptinit
prompt walters
zstyle ':completion:*' menu select
setopt completealiases
## Key bindings
bindkey -e
typeset -A key
key[Home]=${terminfo[khome]}
key[End]=${terminfo[kend]}
key[Insert]=${terminfo[kich1]}
key[Delete]=${terminfo[kdch1]}
key[Up]=${terminfo[kcuu1]}
key[Down]=${terminfo[kcud1]}
key[Left]=${terminfo[kcub1]}
key[Right]=${terminfo[kcuf1]}
key[PageUp]=${terminfo[kpp]}
key[PageDown]=${terminfo[knp]}
# setup key accordingly
[[ -n "${key[Home]}" ]] && bindkey "${key[Home]}" beginning-of-line
[[ -n "${key[End]}" ]] && bindkey "${key[End]}" end-of-line
[[ -n "${key[Insert]}" ]] && bindkey "${key[Insert]}" overwrite-mode
[[ -n "${key[Delete]}" ]] && bindkey "${key[Delete]}" delete-char
[[ -n "${key[Up]}" ]] && bindkey "${key[Up]}" up-line-or-history
[[ -n "${key[Down]}" ]] && bindkey "${key[Down]}" down-line-or-history
[[ -n "${key[Left]}" ]] && bindkey "${key[Left]}" backward-char
[[ -n "${key[Right]}" ]] && bindkey "${key[Right]}" forward-char
source /usr/share/doc/pkgfile/command-not-found.zsh
# Finally, make sure the terminal is in application mode, when zle is
# active. Only then are the values from $terminfo valid.
if (( ${+terminfo[smkx]} )) && (( ${+terminfo[rmkx]} )); then
function zle-line-init () {
printf '%s' "${terminfo[smkx]}"
function zle-line-finish () {
printf '%s' "${terminfo[rmkx]}"
zle -N zle-line-init
zle -N zle-line-finish
fi
When I create the assignment on the command line it seems to work fine. I was thinking this might have been due to bash still being my default shell, but I changed it with chsh, relogged and the problem still occurs

Answer 1

Well when I run it it seems to have been executed without problems, but the bindings don't work - do they work in your case?
As for the error it can be seen with -n switch:
> zsh -n .zshrc ~
.zshrc:14: bad substitution