Disabling an option for a single statement

Disabling an option for a single statement

[Zach Riggle]

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Hello all!

It's not uncommon that I want to disable a specific option (in my case,
cdablevars) for a single statement.

Currently, I do something like:

( setopt no_cdable_vars; echo "${(D)variable}" )


Or use an anonymous function

() { setopt local_options un_cdable_vars; echo "${(D)variable}"


Are there any easier ways to achieve this?

*Zach Riggle*

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Re: Disabling an option for a single statement

[Bart Schaefer]

On Mon, Aug 22, 2022 at 10:46 AM Zach Riggle <zachriggle@gmail.com> wrote:
>
> It's not uncommon that I want to disable a specific option (in my case, cdablevars) for a single statement.

There's not really a better way in general.  There are of course the
noglob and nocorrect "precommand modifiers" which have this effect for
the GLOB and CORRECT options, but it's not generalized.

You can sort of make it work with something like

alias nocdv='() { setopt localoptions nocdablevars; "$@" } '

but that doesn't affect things that happen during argument
interpretation, such as potentially ${(D)var}, so there are several
options for which using an alias is not very helpful.