+## Upgrade path for old zshrc layout, assuming
+## /etc/skel/.zshrc installed as .zshrc and
+## /etc/zsh/zshrc installed as .zshrc.global
+## and no ~/.zshrc.local exists yet.
+if [ -r ~/.zshrc -a -r ~/.zshrc.global -a ! -r ~/.zshrc.local ] ; then
+ printf '-!-\n'
+ printf '-!- Looks like you are using the old zshrc layout of grml.\n'
+ printf '-!- Please read the notes in ~/.zshrc and ~/.zshrc.global\n'
+ printf '-!- and/or check out grml-zsh-refcard at http://grml.org/zsh/\n'
+ printf '-!-\n'
+fi
+