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From: Chet Ramey <chet.ramey@case.edu>
Newsgroups: gnu.bash.bug
Subject: Re: temp setting POSIXLY_CORRECT turns alias expansion off
Date: Thu, 16 Jan 2020 11:02:43 -0500
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On 1/15/20 10:24 PM, Martijn Dekker wrote:
> When alias expansion is enabled for a script in bash native mode, prefixing 
> POSIXLY_CORRECT=y to any command will turn alias expansion globally off. 
> This is a bug because the assignment should only have effect on that command.

You're probably right, but it's an interesting question.

The idea is that

POSIXLY_CORRECT=y true

is essentially equivalent (assuming POSIXLY_CORRECT is not already set) to

POSIXLY_CORRECT=y ; true; unset POSIXLY_CORRECT

and turning off posix mode resets a default environment.


-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/