Justin Pryzby <pryzby@telsasoft.com> writes:
> It seems like the only way to make variable number of arguments is is with
> multiple entries in pg_proc.dat, one for each "number of" arguments. Is that
> right ?
Another way to do it is to have one entry, put the full set of arguments
into the initial pg_proc.dat data, and then use CREATE OR REPLACE FUNCTION
later during initdb to install some defaults. See existing cases in
system_views.sql, starting about line 1180. Neither way is especially
pretty, so take your choice.
regards, tom lane