Re: [PATCH] Add shopts for trailing newlines in command substitution and here strings

[Martin D Kealey]

On Wed, 27 Aug 2025 at 15:16, Koichi Murase <myoga.mur...@gmail.com> wrote:

>
> However, this isn't true. With these features implemented as shell
> options, in general, one actually needs to write it in the following
> way:
>
>   local saved=$(shopt -p cmdsubst_trailing_nls) # (assume we are in a
> function)
>   shopt -s cmdsubst_trailing_nls
>   foo=$(some_command ...)
>   eval -- "$saved"


Couldn't we just dictate that "local -" saves all set -o and shopt settings
(or at least all new ones going forward)?

So then it'd be just:

fn() {
  local -
  shopt -s cmdsubst_trailing_nls
  foo=$( some_command … )
}

Or maybe it's time to consider:

fn() {
  local -O cmdsubst_trailing_nls=1
  foo=$( some_command … )
}

-Martin