sed bug ?

[Timo Teras]

On Thu, 17 Nov 2016 12:08:27 +0000
<dietmar.schindler at manroland-web.com> wrote:

> > Von: Timo Teras
> > Gesendet: Donnerstag, 17. November 2016 10:56
> >
> > The following discrepancy happens on 1.25.1 (and git master) with
> > musl c-library:
> >
> > ~ $ echo /usr/lib/ | sed 's,\(^/\|\)[^/][^/]*,..,g'
> > ../../
> >
> > ~ $ echo /usr/lib/ | busybox sed 's,\(^/\|\)[^/][^/]*,..,g'
> > /../../
> >
> > Any thoughts?  
> 
> The output of busybox sed is indeed incorrect.

Someone replied offlist that the regexp is using \| which apparently is
GNU extension. Apparently it would be better to convert the above to
use ERE, or fix it in some other manner.

Thanks,
Timo