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From: "M. Nejat AYDIN" <mnaydin@yahoo.com>
Newsgroups: gnu.bash.bug
Subject: Re: Assignment-like word shouldn't be subjected to tilde expansion in POSIX mode
Date: Tue, 21 Jul 2020 16:36:36 +0300
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On 7/21/20 4:00 PM, M. Nejat AYDIN wrote:
> On 7/21/20 3:30 PM, Greg Wooledge wrote:
>> I have no objection to bash's decision here.  I actually find it less
>> surprising than dash's decision, although both are rational ones.
> 
> I think dash is complying with POSIX here.

I've overlooked this sentence from POSIX:
  If the system does not recognize the login name,
  the results are undefined.
It seems the behaviour is undefined according to POSIX, so both
decisions are acceptable.