On Sat, Jan 21, 2023 at 8:21 AM Ray Andrews wrote: > > I suspect > that, as Lawrence said, it's because PATH is an internally created > modification of path, it's a scalar created from an array. So FOO is > all fine, but PATH has a certain specialness -- no other tied parameter > has one 'version' different from the other. > The definition of a tied parameter is that one of the pair is a scalar string with an internal delimiter defaulting to a colon, and the other is an array of the delimited values. There's nothing magic about PATH in this respect.