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Re: PATCH: new parameter flag?

X-seq: zsh-workers 7569
From: Zefram <zefram@xxxxxxxx>
To: wischnow@xxxxxxxxxxxxxxxxxxxxxxx (Sven Wischnowsky)
Subject: Re: PATCH: new parameter flag?
Date: Tue, 31 Aug 1999 10:29:13 +0100 (BST)
Cc: zsh-workers@xxxxxxxxxxxxxx
In-reply-to: <199908300939.LAA20676@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> from Sven Wischnowsky at "Aug 30, 1999 11:39:27 am"
Mailing-list: contact zsh-workers-help@xxxxxxxxxxxxxx; run by ezmlm

Sven Wischnowsky wrote:
>This adds the `%' flag to parameter expansion. It makes the result of
>the expansion undergo prompt expansion.

Yes!  I've wanted this for the built-in strftime, in all the daemons I've
ever written in zsh.  (print -P has some other undesirable semantics.)

>+item(tt(%))(
>+Expand all tt(%) escapes in the resulting words in the same way as in
>+prompts (see noderef(Prompt Expansion)).
>+)

Actually I think it'll do full prompt expansion, affected by the options
PROMPT_EXPAND, PROMPT_BANG and PROMPT_PERCENT.  It would be nice to
have another flag to do just % sequences, i.e., do prompt expansion with
options NO_PROMPT_EXPAND, NO_PROMPT_BANG and PROMPT_PERCENT temporarily
set.  Say, (%) for just % sequences, and (%%) for full prompt expansion.

-zefram

References:
- PATCH: new parameter flag?
  - From: Sven Wischnowsky

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