Re: [PATCH] chown: prevent multiple --from options

[Kaz Kylheku (Coreutils)]

On 2019-09-29 02:46, Francois wrote:
> We can fix by rejecting the cases where --from option is provided 
> multiple
> times and uid or gid are set twice.

An more sophisticated fix is to allow the --from to be given multiple 
times,
but have the resulting range be the intersection of all of the ranges 
given.

Each successive --from applies clipping to the range calculated so far.

If a uid or gid are given twice, but match, that should be fine too; why 
not.