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Re: Is it possible to clear empty :-tied elements?

X-seq: zsh-users 27899
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>
Cc: Zsh Users <zsh-users@xxxxxxx>
Subject: Re: Is it possible to clear empty :-tied elements?
Date: Tue, 19 Jul 2022 17:18:16 -0700
Archived-at: <https://zsh.org/users/27899>
In-reply-to: <CAKc7PVAbCrSRNZtQ_b3ZX3iBOe9tjNdFX8bV1BMKSb7Wxj=mZQ@mail.gmail.com>
List-id: <zsh-users.zsh.org>
References: <CAKc7PVAbCrSRNZtQ_b3ZX3iBOe9tjNdFX8bV1BMKSb7Wxj=mZQ@mail.gmail.com>

On Tue, Jul 19, 2022 at 12:55 PM Sebastian Gniazdowski
<sgniazdowski@xxxxxxxxx> 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.

Perhaps this is most easily done with

export -UT CMAKE_PREFIX_PATH="${ZPFX:+$ZPFX:}$CMAKE_PREFIX_PATH"
cmake_prefix_path

??

Follow-Ups:
- Re: Is it possible to clear empty :-tied elements?
  - From: Sebastian Gniazdowski

References:
- Is it possible to clear empty :-tied elements?
  - From: Sebastian Gniazdowski

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