[wp-trac] [WordPress Trac] #23664: Add esc_url() to header_image()

[WordPress Trac]

#23664: Add esc_url() to header_image()
----------------------------+-------------------------
 Reporter:  SergeyBiryukov  |       Type:  enhancement
   Status:  new             |   Priority:  normal
Milestone:  3.6             |  Component:  Themes
  Version:                  |   Severity:  normal
 Keywords:  has-patch       |
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 Spotted this in Twenty Thirteen: `esc_url( header_image() )` (see #23663).

 It doesn't work as intended, since header_image() echoes the value
 directly: [[BR]]
 http://core.trac.wordpress.org/browser/tags/3.5.1/wp-
 includes/theme.php#L983

 I guess we should add `esc_url()` to `header_image()` itself, like we did
 in [14949] for `the_guid()` and in [23527] for `the_permalink()`.

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Ticket URL: <http://core.trac.wordpress.org/ticket/23664>
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