Re: [Boost-users] [Regex] Japanese character equivalence is not working.

From: John Maddock (john_at_[hidden])
Date: 2006-09-13 12:17:00

Raveendra Madala wrote:
> My name is Raveendra Madala. I work for Adobe Systems. We are using
> boost/regex 1.33.1 in one of our projects and we have encountered the
> following bug.

Hi Raveendra: you reported this before on the tracker at 
https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1531909&group_id=7586 
and I've been waiting for more information.

But to repeat myself:

"There is no portable way to make this work unfortunately, it requires that 
the regex engine is able to decode the collation string produced by the 
locale to extract the primary equivalence class.  The "kind" of sort key 
used by the platform is determined in a fairly heuristic way in 
find_sort_syntax() in boost/regex/v4/primary_transform.hpp, and the actually 
sort key is produced in cpp_regex_traits::primary_transform().

You may - with a bit of debugging - be able to find out what's going wrong 
(I don't have access to a mac BTW).  The most important thing would be to 
find out what kind of sort keys are returned by std::collate<>::transform."

That all assumes that you're using boost::wregex: should you be using 
boost::u32regex and ICU support, then primary sort keys are produced by 
ICU's collation engine.  This should work for all Unicode characters, but if 
not let me know.

But basically: more information please :-)

John.