[augeas-devel] Proper locale support

[Daniel P. Berrange]

On Fri, Oct 23, 2009 at 07:30:07PM +0200, David Lutterkort wrote:
> 
> This series of patches addresses an issue with using libaugeas with non-C
> locales (ticket #35). Augeas requires that all regular expressions are
> interpreted in the C locale, in particular, things go horribly wrong for
> character ranges like [a-z] when the locale is not C. This problem was so
> far not visible with augtool and augparse, since they always used the C
> locale.
> 
> Unfortunately, the glibc (and gnulib) regexp matcher will always use the
> current locale, and can't be told to use an explicit locale.
> 
> The issue is addressed in two ways:
> 
>   * on systems that have uselocale(), we switch to the C locale every time
>     we enter through a public API function, and switch back to the old
>     locale on exit
>   * things are hairier (and more expensive) if the system doesn't have
>     uselocale(): there we resort to rewriting regular expressions ourselves
>     and expand character ranges before passing the regexps to the
>     matcher. The rewriting leads to some horendously big regular
>     expressions
> 
> I'd be very thankful for any pointers to solving this short of writing my
> own regexp matcher.

Would  PCRE work for Augeas ?

 http://www.pcre.org/
 http://en.wikipedia.org/wiki/PCRE


Apparently this is the regex lib used by Apache, Exim & a bunch of
other apps

Regards,
Daniel
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