[wp-trac] [WordPress Trac] #42096: `WP_Term_Query` sanitizes `slug` parameter incorrectly

[WordPress Trac]

#42096: `WP_Term_Query` sanitizes `slug` parameter incorrectly
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 Reporter:  boonebgorges  |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Future Release
Component:  Taxonomy      |    Version:
 Severity:  normal        |   Keywords:  needs-patch needs-unit-tests
  Focuses:                |
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 At save time, slugs are sanitized for MySQL using `sanitize_title()`. When
 constructing a query that is intended to match slugs sanitized in this
 way, we should use `sanitize_title_for_query()`. See #19292 [19444].

 `WP_Term_Query` improperly uses `sanitize_title()` in the query context.
 https://core.trac.wordpress.org/browser/tags/4.8.2/src/wp-includes/class-
 wp-term-query.php?marks=495,498#L494 It has always been thus: [30024],
 [5525]. It should be fixed. Let's get a unit test that describes the bug
 (see #19292 for sample payload).

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Ticket URL: <https://core.trac.wordpress.org/ticket/42096>
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