From: Phil Pennock <zsh-workers+phil.pennock@spodhuis.org>
To: zsh-users@zsh.org
Subject: Re: Is it possible to clear empty :-tied elements?
Date: Wed, 20 Jul 2022 15:32:27 -0400 [thread overview]
Message-ID: <YthYS9J0g/d9B9qe@fullerene.field.pennock-tech.net> (raw)
In-Reply-To: <CAKc7PVAbCrSRNZtQ_b3ZX3iBOe9tjNdFX8bV1BMKSb7Wxj=mZQ@mail.gmail.com>
On 2022-07-19 at 21:54 +0200, Sebastian Gniazdowski wrote:
> export -UT CMAKE_PREFIX_PATH="$ZPFX:$CMAKE_PREFIX_PATH" cmake_prefix_path
>
> The problem is that the variable/array will contain empty element if the
> variable is empty when export is run.
>
> I wonder if is it possible to somehow clear such empty entry (i.e.: to
> remove :: from "a::b") without another line of code?
Assign it as an array and do _not_ quote the $ZPFX, so that empty values
are not preserved.
export -UT CMAKE_PREFIX_PATH cmake_prefix_path=($ZPFX "${(s,:,)CMAKE_PREFIX_PATH}")
If you have to be resilient to SH_WORD_SPLIT being enabled, then replace
$ZPFX with ${==ZPFX} instead.
-Phil
prev parent reply other threads:[~2022-07-20 19:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-19 19:54 Sebastian Gniazdowski
2022-07-20 0:18 ` Bart Schaefer
2022-07-20 5:40 ` Sebastian Gniazdowski
2022-07-20 14:58 ` Bart Schaefer
2022-07-20 19:32 ` Phil Pennock [this message]
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