[wp-trac] [WordPress Trac] #11156: Duplicate tag created if tag name contains ampersand

[WordPress Trac]

#11156: Duplicate tag created if tag name contains ampersand
--------------------------+-------------------------------------------------
 Reporter:  sillybean     |       Owner:  filosofo   
     Type:  defect (bug)  |      Status:  new        
 Priority:  normal        |   Milestone:  3.1        
Component:  Taxonomy      |     Version:  2.9        
 Severity:  normal        |    Keywords:  needs-patch
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Changes (by dd32):

  * keywords:  tags, autocomplete, ajax => needs-patch
  * milestone:  Unassigned => 3.1


Comment:

 This might be caused by "Test & Slug" being stored as "Test & Slug" in
 the terms table.

 However, There is another side to this story.

 Create a tag as such:
 {{{
 Name: Some Tag
 Slug: st
 }}}

 Attempt to create another tag as such:
 {{{
 Name: Some Tag
 Slug:
 }}}

 Result will be a second tag created with 'some-tag' as the slug, as the
 name is ignored in the comparison, its only checked to see if another term
 exists matching that slug (be it provided, or automatically generated)

 That testing is done from the Manage -> Tags screen, but its most likely
 also the underlying cause of the Tag additions.

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Ticket URL: <http://core.trac.wordpress.org/ticket/11156#comment:1>
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