[wp-trac] [WordPress Trac] #15256: ?cat=## permalinks do not redirect when category is a parent

[WordPress Trac]

#15256: ?cat=## permalinks do not redirect when category is a parent
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 Reporter:  froman118                |       Owner:
     Type:  defect (bug)             |      Status:  reopened
 Priority:  high                     |   Milestone:  3.3
Component:  Canonical                |     Version:  3.0.1
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |
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Comment (by dd32):

 > Or is there a better way to fix this?

 I've been thinking about it a bit, and in testing, it's hit me that only
 categories (not custom taxonomies, etc) include children in the Tax Query
 array, which is where the issue is originating from.

 Upon looking into `WP_Tax_Query` I've found that children are, by default,
 included - rendering query.php loading them being redundant. The
 [attachment:15256.diff attached patch] removes category children from the
 array, allowing `WP_Tax_Query` to fall back to it's default of loading the
 children itself. Logically, this results in no logic change to the Query
 process, but does however, fix the Canonicalism process (as now WP_Query
 now states that a single category was requested - which is true)).

 However, [attachment:15256.patch] is also viable. I'd like someone elses
 opinion on it before going ahead with either though.

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Ticket URL: <http://core.trac.wordpress.org/ticket/15256#comment:9>
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