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Date: Thu, 4 Dec 2025 13:50:04 -0700
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Subject: Re: group '545' does not exist ?
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From: Brian Inglis via Cygwin <cygwin@cygwin.com>
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On 2025-12-04 08:00, Jon Turney via Cygwin wrote:
> Actually, I think this is a shortcoming of the cygwin version of newgrp.
> The SUS description [1] of newgrp allows a numeric group id to be specified.
> (In fact, it includes the clarifying remark "If group is a non-negative numeric 
> string and exists in the group database as a group name, the numeric group ID 
> associated with that group name will be used as the group ID", which suggests a, 
> um, straightforward implementation)
> But it seems that our implementation only currently handles a group name (See [2]).
> [1] https://pubs.opengroup.org/onlinepubs/7908799/xcu/newgrp.html

That's OG SUSV2 1997 - current is at:

	https://pubs.opengroup.org/onlinepubs/9799919799/utilities/newgrp.html

> [2] https://cygwin.com/cgit/newlib-cygwin/tree/winsup/utils/newgrp.c#n166
-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher  but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

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