Greg, thank you -- this was exactly what I've been failing to find.
And there's even a solution that looks good for my *actual* problem.
-Original Message-
From: Greg Wooledge
Sent: Tuesday, April 2, 2024 3:35 PM
To: Linde, Evan
Cc: bug-bash@gnu.org
Subject: Re: Scope chang
In a loop constructed like `... | while read ...`, changes to
variables declared outside the loop only have a loop local
scope, unlike other "while" or "for" loops.
So far, I have found this in every bash version I have tested
(as low as 3.2.57 on an old mac and as high as 5.2.15).
Nothing obvio
