[wp-trac] [WordPress Trac] #8446: post_class() outputs invalid css class

[WordPress Trac]

#8446: post_class() outputs invalid css class
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 Reporter:  lilyfan  |       Owner:  anonymous
     Type:  defect   |      Status:  new      
 Priority:  high     |   Milestone:  2.7      
Component:  General  |     Version:  2.7      
 Severity:  blocker  |    Keywords:  class    
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 post_class() function outputs category/tag specific classes using its slug
 (introduced at [8641]).

 But, allowed characters are different between slug and css class name.
 (css class name can use [-_a-zA-Z0-9] and non ascii unicod chars)
  A "%" character is allowed for slug, but not for css name.
 Therefore, invalid class name will be created.

 Eg: A user creates "携帯" category (Japanese word for "mobile"), the
 category slug will be "%e6%90%ba%e5%b8%af" and post_class() outputs
 'class="post hentry category-%e6%90%ba%e5%b8%af"'.
 This is an invalid class name.

 Avoid this situation, escaping "%" character with backslash "\":
 category-\%e6\%90\%ba\%e5\%b8\%af"
 This class name is valid. But this seems dirty.

 I suggest using class ID insted of class slug.

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Ticket URL: <http://trac.wordpress.org/ticket/8446>
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