[arch-general] zsh-history-substring-search with grml-zsh-config

[f gr]

Excerpt from Oon-Ee Ng's message
of 2013-04-09T11:23+0800:

> I use grml-zsh-config and after a recent update
> zsh-history-substring-search seems to have stopped working (up and
> down no longer search for the substring).
> 
> Anyone with the same experience, or an a alternative? I really
> don't grok zsh =(

I use both grml-zsh-config and zsh-history-substring-search; it seems
OK here. I don't grok zsh, too.