PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> CREATE EXTENSION pg_tsparser;
> CREATE TEXT SEARCH CONFIGURATION public.vp_ts_config_test (PARSER =
> tsparser);
> SELECT ts_headline('vp_ts_config_test', 'one.two',
> websearch_to_tsquery('three'), 'HighlightAll=TRUE, StartSel="<mark>",
> StopSel="</mark>"');
> Result:
> one.twoone.two
I don't see any such misbehavior with the built-in parser,
so I think you need to report this to the author(s) of the
pg_tsparser extension. This list is just concerned with
bugs in the core Postgres distribution.
regards, tom lane