[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
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 Reporter:  SergeyBiryukov    |       Owner:  nacin
     Type:  defect (bug)      |      Status:  closed
 Priority:  normal            |   Milestone:  3.6
Component:  Formatting        |     Version:
 Severity:  normal            |  Resolution:  fixed
 Keywords:  has-patch commit  |     Focuses:
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Comment (by miqrogroove):

 Replying to [comment:6 SergeyBiryukov]:
 > Replying to [comment:3 nacin]:
 > > Technically, a colon is a "reserved" character which means outside of
 its official use, it must be encoded.
 >
 > An encoded colon (`:` or `:`) doesn't work either.

 For future reference, the correct encoding is `%3a` or `%3A` which is not
 equivalent to the colon HTML character entity.

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Ticket URL: <https://core.trac.wordpress.org/ticket/21974#comment:15>
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