Обсуждение: BUG #17979: (pg_tsparser + ts_headline) duplicate output if dot present

The following bug has been logged on the website:

Bug reference:      17979
Logged by:          Artem
Email address:      vicreal@yandex.ru
PostgreSQL version: 14.4
Operating system:   Windows 10
Description:

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

Must be:
one.two

PG Bug reporting form <noreply@postgresql.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