[libvirt] boostrap: gzip version check problem on FreeBSD
Ralf Wildenhues
Ralf.Wildenhues at gmx.de
Sat Nov 13 06:58:23 UTC 2010
Hello,
* Eric Blake wrote on Fri, Nov 12, 2010 at 10:40:25PM CET:
> On 11/12/2010 02:35 PM, Paul Eggert wrote:
> > On 11/12/2010 12:50 PM, Eric Blake wrote:
> >> + s/^\([0-9]\{1,\}\(\.[.a-z0-9-]*\)\)*.*/\1/
> >
> > Surely that is a typo. The "*\)\)*" should be a "*\)*\)".
>
> Aargh - I tested on one machine, but committed on another. Typo is now
> fixed.
But the following limitations from autoconf.info still apply:
Nested parentheses in patterns (e.g., `\(\(a*\)b*)\)') are quite
portable to current hosts, but was not supported by some ancient
`sed' implementations like SVR3.
Some `sed' implementations, e.g., Solaris, restrict the special
role of the asterisk `*' to one-character regular expressions and
back-references, and the special role of interval expressions
`\{M\}', `\{M,\}', or `\{M,N\}' to one-character regular
expressions. This may lead to unexpected behavior:
You can probably ignore the first, but not the second.
Cheers,
Ralf
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