It's already set in zshrc.pre file as required by grml-zsh-config
@ -1,8 +1,5 @@
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
# so that i can autoload -Uz local functions
fpath=( ~/.config/zsh/functions $fpath)
# Use a REAL regex engine
zmodload zsh/pcre