Since ILIKE now responds to collations, it would be nice if the case-insensitive regex operators did too. The hard part of that is getting the information from src/backend/utils/adt/regexp.c to src/backend/regex/regc_locale.c. In principle we could probably add a field to the data structures carried around in the regex library, but that is looking a bit invasive, and since we share that code with the Tcl project I'm loath to change it too much. So what I'm thinking about is just having a couple of static variables in regc_locale.c that we initialize before each use of the regex library. This is a bit grotty, but there's no need for the regex library to be re-entrant, so it wouldn't cause any problems until that improbable day when somebody succeeds in multi-threading the backend.
Comments? regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers