Database Software

Am using the following code to highlight (in red) the text in documents (both .htm and .doc) when users search with Oracle Text (any parameter not in quotes is a variable value) -

select markup_id.nextval into clob_sequence_num from dual;

ctx_doc.markup
(index_name => 'docs_ctx_redacted_idx',
textkey => p_file,
text_query => query_text,
restab => 'markup_tab_redacted',
query_id => clob_sequence_num,
plaintext => false,
starttag => '<B><FONT COLOR="red">',
endtag => '</B></FONT>');

select document into clob_field
from markup_tab_redacted
where query_id = clob_sequence_num;
loop
dbms_lob.read (clob_field, clob_buffer_size, clob_offset, clob_buffer);
htp.prn (clob_buffer);
clob_offset := clob_offset + clob_buffer_size;
end loop;
dbms_lob.close (clob_field);
end if;

Everything works fine, except when my users use wildcards in their searches. The correct documents are located, but the search strings are not highlighted. (They are highlighted accurately when search terms are defined without using wildcards.) Is there something I can modify to allow terms to be highlighted regardless of whether or not I use wildcards?