Multiple keyword search: unnecessary sentence search

[scribu]

's=foo+bar' generates this query:

SELECT SQL_CALC_FOUND_ROWS wp_posts . *
FROM wp_posts
WHERE 1 =1
AND (
	((wp_posts.post_title LIKE '%foo%') OR (wp_posts.post_content LIKE '%foo%'))
	AND
	((wp_posts.post_title LIKE '%bar%') OR (wp_posts.post_content LIKE '%bar%'))
	OR
	(wp_posts.post_title LIKE '%foo bar%')
	OR
	(wp_posts.post_content LIKE '%foo bar%')
)
AND wp_posts.post_type IN ('post', 'page', 'attachment')
AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private')
ORDER BY wp_posts.post_date DESC
LIMIT 0 , 10

Unless I'm missing something, this part is superfluous:

	OR
	(wp_posts.post_title LIKE '%foo bar%')
	OR
	(wp_posts.post_content LIKE '%foo bar%')

$q['sentence'] is taken care of above.

Offset by 24 lines but applied cleanly and didn't break functionality. Looks good.

In [18056]:

Remove duplicate sentence search terms. Props scribu. fixes #17152