[wp-trac] [WordPress Trac] #31632: Don't strip newline in esc_url() when protocol is mailto:

[WordPress Trac]

#31632: Don't strip newline in esc_url() when protocol is mailto:
-----------------------------+----------------------------
 Reporter:  danielbachhuber  |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Future Release
Component:  Formatting       |    Version:
 Severity:  normal           |   Keywords:
  Focuses:                   |
-----------------------------+----------------------------
 `esc_url()` strips encoded newlines  when it shouldn't.

 The genesis of newline stripping is r4148. `mailto` was added as a
 mentioned protocol in r8743, but it doesn't appear there was any technical
 change, only the PHPdoc mention.

 Here's the failing testcase:

 {{{
 $body = <<<EOT
 Hi there,

 I thought you might want to sign up for this newsletter
 EOT;
 $email_link = 'mailto:?body=' . rawurlencode( $body );

 // Expected:
 mailto:?body=Hi%20there%2C%0A%0AI%20thought%20you%20might%20want%20to%20sign%20up%20for%20this%20newsletter
 var_export( $email_link );

 // Actual:
 mailto:?body=Hi%20there%2CI%20thought%20you%20might%20want%20to%20sign%20up%20for%20this%20newsletter
 $email_link = esc_url( $email_link );
 var_export( $email_link );
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/31632>
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