[wp-trac] [WordPress Trac] #21974: esc_url() doesn't allow protocol-relative URLs with colons

[WordPress Trac]

#21974: esc_url() doesn't allow protocol-relative URLs with colons
----------------------------+--------------------------
 Reporter:  SergeyBiryukov  |       Type:  defect (bug)
   Status:  new             |   Priority:  normal
Milestone:  3.5             |  Component:  General
  Version:                  |   Severity:  normal
 Keywords:                  |
----------------------------+--------------------------
 This doesn't work:
 {{{
 wp_enqueue_style( 'twentytwelve-fonts',
 "//fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700",
 array(), null );
 }}}
 The colon is the culprit. `wp_kses_bad_protocol()` reduces the URL to:
 {{{
 400italic,700italic,400,700
 }}}
 So `esc_url()` returns an empty string: [[BR]]
 http://core.trac.wordpress.org/browser/tags/3.4.2/wp-
 includes/formatting.php#L2572

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Ticket URL: <http://core.trac.wordpress.org/ticket/21974>
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