Re: $? behaviour after comsub in same command

[Harald van Dijk via austin-group-l at The Open Group]

On 05/04/2023 17:44, Oğuz wrote:
5 Nisan 2023 Çarşamba tarihinde Harald van Dijk <a...@gigawatt.nl 
<mailto:a...@gigawatt.nl>> yazdı:

    I am not sure which other ash based shells you were looking at, 

/bin/sh on NetBSD and FreeBSD

Thanks. I indeed see the same results as you on a recent version of 
FreeBSD sh (the one on the FreeBSD 13.1 installation media).

There is a legitimate benefit to this: swapping variables without an 
additional helper variable actually works in that implementation.

  a=1 b=2
  a=$b b=$a
  echo $b $a

As it turns out, the at the moment still rather incomplete mrsh 
<https://mrsh.sh/> also behaves this way.

Cheers,
Harald van Dijk