Bug in calls to perl scripts from Windows executables in TeXLive 2023?

[Karl Berry]

John - the wrapper builds the command line as an array of strings
(adding double quotes around args with spaces) and calls the Lua
function os.spawn on it. It doesn't know what shell interpreter will be
invoked. I don't see how it can do anything differently. Here's the
source:
https://tug.org/svn/texlive/trunk/Build/source/texk/texlive/windows_wrapper/runscript.tlu?revision=66266&view=markup
(line 921 is the eventual call)

So maybe this is somehow about what os.spawn() does on MSYS?
Sorry, I can't guess further ... --best, karl.