[PATCH] sed: Add support for POSIX -E to select EREs (this is a synonym for -r)

[David A. Wheeler]

I posted:
> > Busybox already supported this using "-r", so this patch just adds "-E"
> > as a synonym, documents "-E", and adds a trivial test to check it.

On Tue, 29 Oct 2013 00:54:33 +0100, Denys Vlasenko <vda.linux at googlemail.com> wrote:
> Applied, thanks

Excellent!  Thanks!

However, this modified patch doesn't document "-E" anywhere
(e.g., "./busybox sed --help" or "man busybox").

Is there a reason the documentation for "-E" was dropped?

--- David A. Wheeler



P.S.: it's true that GNU sed didn't document "-E", but they
just added a patch to document "-E", so it'll be documented in the next release:
http://git.savannah.gnu.org/cgit/sed.git/commit/?id=8b65e07904384b529a464c89f3739d2e7e4d5135