Log Message:
-----------
Add a rank/(rank+1) normalization option to ts_rank(). While the usefulness
of this seems a bit marginal, if it's useful enough to be shown in the manual
then we probably ought to support doing it without double evaluation of the
ts_rank function. Per my proposal earlier today.
Modified Files:
--------------
pgsql/doc/src/sgml:
textsearch.sgml (r1.33 -> r1.34)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/textsearch.sgml?r1=1.33&r2=1.34)
pgsql/src/backend/utils/adt:
tsrank.c (r1.8 -> r1.9)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/tsrank.c?r1=1.8&r2=1.9)