Re: patch adding new regexp functions

Jeremy Drake wrote:
> On Thu, 22 Mar 2007, Tom Lane wrote:
> 
> > AFAIR, the reason there's no TextPGetDatum (and ditto for lots of other
> > datatypes) is lack of obvious usefulness.  A function dealing with a
> > "text *" doesn't normally have reason to convert that to a Datum until
> > it returns --- and at that point PG_RETURN_TEXT_P is the thing to use.
> > Do you have a counterexample, or does this just suggest that the regexp
> > function patch needs some refactoring?
> 
> If you are asking why I have reason to convert text * to a Datum in cases
> other than PG_RETURN_TEXT_P, it is used for calling text_substr functions
> using DirectFunctionCallN.  BTW, this usage of text_substr using
> PointerGetDatum was copied from the pre-existing textregexsubstr function.

Is there a follup patch based on this discussion?

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