From: "Bart Schaefer" <schaefer@brasslantern.com>
To: zsh-workers@sunsite.auc.dk
Subject: Re: BUG: zsh-3.1.5-pws-14: parameter expansion not working properly
Date: Sun, 18 Apr 1999 16:39:03 -0700 [thread overview]
Message-ID: <990418163903.ZM27240@candle.brasslantern.com> (raw)
In-Reply-To: <199904160736.JAA15853@beta.informatik.hu-berlin.de>
On Apr 16, 9:36am, Sven Wischnowsky wrote:
} Subject: Re: BUG: zsh-3.1.5-pws-14: parameter expansion not working proper
}
} Bart Schaefer wrote:
}
} > I don't think it's possible to "pass down" from paramsubst-->multsub
} > the knowledge of whether an array should be returned [except when (P)];
} > it has to be "passed up," multsub<--prefork<--stringsubst<--paramsubst.
}
} I don't understand the difference between making the the arrows point
} to the left or the right here.
It's a call stack, with caller on the left and the callee on the right.
Right-pointing arrows mean passed parameters, left-pointing arrows mean
returned value(s) [including "returned" through a static global].
} > 4. *After* the subscripts are applied, the outer ${ ... } joins the
} > quoted words into a single string, *unless*: the (@) flag is present
} > or the [@] subscript was applied, and the (j) flag is not present.
}
} This one is very important. If we make it this way (and the patch
} below does that), it means that we still need the plethora of `(@)'
Yes, I know ...
} [...] the behavior with the patch looks better than before to
} me. We only need to discuss the `is there a way to avoid the need for
} the many (@) flags' thing.
I think the way to approach this may be to try to rewrite Peter's manual
section on parameter substitution rules to see how confusing it is when
joining does not occur.
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
next prev parent reply other threads:[~1999-04-18 23:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-04-16 7:36 Sven Wischnowsky
1999-04-16 7:48 ` Andrej Borsenkow
1999-04-16 9:04 ` Bart Schaefer
1999-04-16 9:26 ` Andrej Borsenkow
1999-04-18 23:39 ` Bart Schaefer [this message]
1999-05-07 11:51 ` Peter Stephenson
1999-05-07 13:36 ` Sven Wischnowsky
1999-05-09 17:49 ` Bart Schaefer
1999-05-10 8:28 ` PATCH: mult_isarr documentation Peter Stephenson
-- strict thread matches above, loose matches on Subject: below --
1999-05-10 9:13 BUG: zsh-3.1.5-pws-14: parameter expansion not working properly Sven Wischnowsky
1999-04-15 12:08 Sven Wischnowsky
1999-04-15 20:10 ` Bart Schaefer
1999-04-15 6:49 Sven Wischnowsky
1999-04-15 11:03 ` Bart Schaefer
1999-04-12 7:17 Sven Wischnowsky
1999-04-14 17:27 ` Bart Schaefer
1999-04-10 11:28 Geoff Wing
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