On 10/23/2013 11:02 AM, Claudio Bley wrote: >>> Seems \s is buggy in this grep version with a non UTF-8 locale >>> setting. Observe: >>> >>> $ LANG=en_US.UTF-8 grep -nE '\<(int|unsigned) ([^(]* )*(i|j|k)(\s|,|;)' >>> src/conf/interface_conf.h >>> $ LANG=C grep -nE '\<(int|unsigned) ([^(]* )*(i|j|k)(\s|,|;)' >>> src/conf/interface_conf.h >> >> But 'syntax-check' should be already using grep in the C locale (if not, >> that's a bug upstream in gnulib). > > But that's the point, the bug manifests itself with LANG=C, NOT with > LANG=*.UTF-8
Ah, I see - the bug in RHEL 5 grep is in LANG=C. >>> >>> So, I think the right fix would be to avoid \s altogether and use >>> [[:space:]] instead. >> >> The \s usage was good enough to work around the grep bug > > I'm confused. Which bug are you talking about? Oops, I typed one thing but meant another: the \> fix (that Martin has already pushed) is all the more we need to work around the RHEL 5 grep. > > So, what does \s match with, when using LANG=C ? It's supposed to match space, but that's a problem for the RHEL 5 team to answer. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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