Re: xfstests can't be installed by running make install

[Zorro Lang]

On Wed, Jul 18, 2018 at 10:47:09AM +0200, Florian Weimer wrote:
> * Zorro Lang:
> 
> > On Wed, Jul 18, 2018 at 08:04:05AM +0200, Florian Weimer wrote:
> >> * Zorro Lang:
> >> 
> >> >> > > This is related to this glibc bug:
> >> >> > > 
> >> >> > >   https://sourceware.org/bugzilla/show_bug.cgi?id=23393
> >> >> 
> >> 
> >> > A stranger thing is:
> >> > egrep [A-Z] match ABCD and bcd, but not match 'a'...
> >> 
> >> That's the same issue as [0-9] not matching ９.
> >> 
> >> > I already can't understand the new rules ...
> >> 
> >> The range operator matches characters according to their collation
> >> weight, and sincce the weight of 'a' is less than the weight of 'A',
> >> 'a' is not included in the [A-Z] range.
> >
> > How to define/calculate the *weight* in your context? Why you say the
> > weight of 'a' is less than the weight of 'A'
> 
> This is a concept from POSIX collation, based on a locale definition:
> 
> I hope this link is reasonably stable:
> 
> <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03_02>
> 
> Basically, collation is in alternative way of sorting strings,
> different from codepoint order, and it is specifically designed to
> take cultural conventions into account.  Traditionally, most regular
> expression range expression such as [a-z] follow collation order,
> although this is not required by POSIX for non-C/non-POSIX locales.
> 
> >> This could be fixed by including all characters with the same primary
> >> weight as the endpoints (so that [ā-ẑ] and [a-z] would end up being
> >> the same).  It makes the behavior more logical, but it doesn't fix
> >> existing scripts.
> >
> > We find that the $LANG will affect how glibc deal with the wildcard.
> > We all test on LANG=en_US.UTF=8, but if I set export LANG=C, then
> > [a-z] and [A-Z] are all as expected, and xfstests make install works.
> 
> Right, this is expected: POSIX requires the behavior you need for the
> "C" locale.

I was trying to change all these things to [:digit:], [:lower:], [:upper:],
[:alpha:] and [:alnum:]. But there're many, and the worse thing is there're
many things like [1-9], [3-8], [1-9a-f], [0-9a-f-] etc...

So I have to stop, and think about if there's a better way? How about we
fix the Makefile issue by change [a-z] to [[:lower:]], then export LANG=C
in xfstests/check file, and recommand export it in local.file?

Please tell me, if you have better idea.

Thanks so much,
Zorro

> --
> To unsubscribe from this list: send the line "unsubscribe fstests" in
> the body of a message to address@hidden
> More majordomo info at  http://vger.kernel.org/majordomo-info.html