Frank.Meisschaert@UGent.be wrote:

Full_Name: Frank Meisschaert Version: 2.4.26 OS: linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (157.193.44.200)

When I try to add the names "İsmail" (original, with dotted capital I) and "Ismail" (transcribed, regular capital I) to an entry using ldapmodify:

dn: ... changetype: modify replace: givenName givenName: Ismail givenName:: xLBzbWFpbA==

I get the error:

ldap_modify: Type or value exists (20) additional info: givenName: value #0 provided more than once

The lowercase version of dotted and regular capital I is regular i which explains this error. However according to unicode case folding the dotted capital I should be mapped to 0069 0307 (i, combining dot above) which would make Ismail andİsmail different when compared case-insensitively as I would expect.

Apparently our liblunicode implementation doesn't use the CaseFolding data. I believe that means our implementation corresponds to the "Simple" case folding rules. They're valid, just not doing what you want in this case. So it appears that this is an enhancement request.

I don't believe this request warrants a very high priority. Looking at the Unicode charts, I-with-dot-above is the only character where the two case folding alternatives actually makes a difference.