buggy sed on Darwin?

[Werner LEMBERG]

[I'm writing this here so that the information can be included into
 autoconf.info in case it is really a bug.]

Consider this pipeline

  makeinfo --version | sed 's/^.* \([^ ]\+\)$/\1/;1q'

with GNU sed 4.0.9 I get

  4.8

but with the (BSD) sed from OS X I get

  makeinfo (GNU texinfo) 4.8

I wonder whether this is a BSD sed bug or whether I'm doing something
wrong.

BTW,

  strings /usr/bin/sed

shows

  $FreeBSD: src/usr.bin/sed/compile.c,v 1.22 2002/07/30 14:07:30 tjr Exp $

but the problem might also be in Darwin's regex library.


    Werner