Boone Gorges 9f05bf8ed9 Query: Ignore search terms consisting of a single dash.
Due to the "exclude" support added in WP 4.4, single dashes were being
converted to "NOT LIKE '%%'" clauses, causing all searches to fail.

Props RomSocial, swissspidy.
Fixes .

git-svn-id: https://develop.svn.wordpress.org/trunk@36989 602fd350-edb4-49c9-b593-d223f7449a82
2016-03-14 14:11:16 +00:00
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