From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: Peter Stephenson <pws@ibmth.df.unipi.it>,
zsh-workers@sunsite.auc.dk (Zsh hackers list)
Subject: Re: PATCH: pws-19: minor syntactic innovation
Date: Sat, 29 May 1999 08:31:19 +0000 [thread overview]
Message-ID: <990529083119.ZM27236@candle.brasslantern.com> (raw)
In-Reply-To: <9905231515.AA16080@ibmth.df.unipi.it>
On May 23, 5:15pm, Peter Stephenson wrote:
} Subject: PATCH: pws-19: minor syntactic innovation
}
} Just thought of a trivial way to take a lot of grief out of parameter
} substitution. This patch makes the following valid:
}
} ${${${${(f)"$(typeset)"}:#*local *\=*}%%\=*}##* }
Hooray, hooray, hooray. About six times a year I try that kind of syntax
(having forgotten it doesn't work), grumble to myself, and do it some other
way. Thank you. I always assumed there was some incredibly hairy parsing
thing that had to be done to consume the quoted string at that point.
} replacing the equivalent but grotesquer
}
} "${(@)${(@)${(@)${(@f)$(typeset)}:#*local *\=*}%%\=*}##* }"
Perfect.
I'm tempted to try something similar in 3.0.6 ... except because of this:
} Since you got nothing when you did that before, I don't see how it can
} break anything. The key point is that quotation of a substitution is
} already tested for by looking at whether it begins with a quoted $, not by
} whether the parent substitution is quoted.
If I put this patch of yours into 3.0.6, will it behave differently than
it does in 3.1.5 (e.g., because of the mult_isarr change)? If so, I think
I'd rather not introduce differing new behaviors in the two branches.
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
next prev parent reply other threads:[~1999-05-29 8:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-05-23 15:15 Peter Stephenson
1999-05-29 8:31 ` Bart Schaefer [this message]
1999-05-31 22:41 ` Bart Schaefer
1999-06-01 6:23 ` Andrej Borsenkow
1999-06-01 8:21 ` Peter Stephenson
1999-06-01 12:52 ` Andrej Borsenkow
1999-06-01 9:56 ` PATCH: pws-19: document " Peter Stephenson
1999-06-01 17:44 ` Bart Schaefer
1999-06-02 8:03 ` Peter Stephenson
1999-06-02 8:44 ` sh compatibility " Andrej Borsenkow
1999-06-02 8:30 ` Peter Stephenson
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