From: Danny Dulai <nirva@ishiboo.com>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh-users@sunsite.auc.dk
Subject: Re: Setting paths with ~'s in values.
Date: Mon, 22 Feb 1999 17:20:07 -0500 [thread overview]
Message-ID: <19990222172007.61479@bleep.ishiboo.com> (raw)
In-Reply-To: <990212140558.ZM11520@candle.brasslantern.com>; from Bart Schaefer on Fri, Feb 12, 1999 at 02:05:58PM -0800
Quoting Bart Schaefer (schaefer@brasslantern.com):
> A direct translation would thus be:
>
> for t_path in $(<${HOME}/.zpaths)
> do
> if
> [[ -d $t_path ]]
> then
> eval path=\( $path $t_path \)
> fi
> done
This didnt seem to add the paths with ~ in them because the ~ didnt get
expanded in the test for existence. i had to do an eval before the if, so
the -d would work:
for t_path in $(<${HOME}/.zpaths)
do
eval t_path=$t_path
if [ -d $t_path ]; then
path=( $path $t_path )
fi
done
This works perfectly for me.
> and you don't need the extra step of removing the leading colon. But
> there's a better, faster, smarter way to do the same thing:
>
> eval path=\( ${^$(<${HOME}/.zpaths)}'(|)(/)' \)
>
> Here, the ${^...} takes the place of the "for" loop, the (/) tests a
> glob pattern to see if it refers to a directory, and the (|) turns each
> of the lines from .zpaths into an equivalent glob pattern so that (/)
> test is applied. The quotes and backslashes just make sure that the
> globbing and array assignment steps are delayed until the "eval" runs.
Aftertmuch of fiddling with this, I found it works if I have NULL_GLOB set.
eval path=\( ${^$(<${HOME}/.zpaths)}'(|)(/N)' \)
works even if you don't have that option st (good for using it in .zshenv
if you set optoin in .zshrc).
--
___________________________________________________________________________
Danny Dulai Feet. Pumice. Lotion.
http://www.ishiboo.com/~nirva/ nirva@ishiboo.com
next prev parent reply other threads:[~1999-02-22 22:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-12 20:17 Larry P . Schrof
1999-02-12 22:05 ` Bart Schaefer
1999-02-12 22:29 ` Bart Schaefer
1999-02-22 22:20 ` Danny Dulai [this message]
1999-02-23 4:58 ` Bart Schaefer
1999-02-23 8:39 ` Danny Dulai
1999-02-24 5:07 ` Bart Schaefer
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