Re: Replacements for regular shell builtins

[Paul Eggert]

Eric Blake <address@hidden> writes:

> On the bug-bash list, Chet Ramey pointed out to me that a POSIX shell is
> not required to implement those 17 utilities as built-ins; it only
> requires that the POSIX-compliant version those 17 utilities be
> successfully found without searching PATH, and that any side-effects to
> the current environment take place correctly.

Sorry, I can't parse that.
And I can't find anything relevant after wading through the spam at
<http://lists.gnu.org/archive/html/bug-bash/2005-02/threads.html>
(perhaps because the discussion hasn't been archived yet).
Could you please elaborate a bit, perhaps with a URL or two?

> while we can cobble together a simple script for the remaining
> utilities, coreutils really needs a fully-compliant newgrp since
> Chet was unwilling to provide it as a bash builtin.

But given that almost nobody uses coreutils "su", I'm not sure that
newgrp belongs in coreutils.  They are related commands.  It might
make more sense to decommission coreutils 'su'.