Re: PATCH: CITEXT 2.0 v4

On Jul 17, 2008, at 03:45, Michael Paesold wrote:

> Wouldn't it be possible to create a variant of regexp_replace, i.e.  
> regexp_replace(citext,citext,text), which would again lower-case the  
> first two arguments before passing the input to  
> regexp_replace(text,text,text)?

Sure, but then you end up with this:

template1=# select regexp_replace( 'Fxx'::citext, 'X'::citext, 'o');
regexp_replace
----------------
foo
(1 row)

Which is just wrong. I'm going to look at the regex C functions today  
and see if there's an easy way to just always pass them the 'i' flag,  
which would do the trick. That still won't help replace(),  
split_part(), or translate(), however.

Best,

David