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From: "Andrej Borsenkow" <Andrej.Borsenkow@mow.siemens.ru>
To: "Peter Stephenson" <pws@cambridgesiliconradio.com>,
   "Zsh users list" <zsh-users@sunsite.auc.dk>
Subject: RE: Probs with nested braces in PROMPT
Date: Thu, 6 Jul 2000 14:19:24 +0400
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>
> The problem was that ordinary ${...} doesn't know about
> %-substitution in
> prompts, nor should it (that would be a horrendous
> complication involving
> different levels of substitution).  So it took the brace in
> `%}' as the
> brace closing the substitution.

Yes, of course. But why it did it only when parameter was undefined? I
mean, parsing is done by lexer - and it has to find the closing brace in
any case and lexer does not know (is it true?) about parameter values.

That is incosistent IMHO and smells more like a bug.

-andrej