Re: to_typemod(type_name) information function

Hi,

the following patch allows to retrieve the typemod. Without this patch,
it does not seem to be possible to generate the first column.

  SELECT format_type(to_regtype(t), pg_to_typemod(t)),
         format_type(to_regtype(t), NULL)
  FROM (VALUES
    ('INTERVAL SECOND (5)'),
    ('Varchar(17)'),
    ('timestamptz (2)')) AS x(t);
           format_type         |       format_type
  -----------------------------+--------------------------
   interval second(5)          | interval
   character varying(17)       | character varying
   timestamp(2) with time zone | timestamp with time zone

I did not find any advice on how to choose a new OID for pg_proc.

Best,
Sophie