[wp-trac] [WordPress Trac] #39755: Rest API json string corruption?

[WordPress Trac]

#39755: Rest API json string corruption?
--------------------------+-----------------------------
 Reporter:  sgehrman      |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  REST API      |    Version:  4.7.2
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 I set up a new install of WP.  Register a rest route.  It returns json
 with string with spaces in it.

 I expect to get back:  {"wtf": 'w                      t
 f'}
 But I get {"wtf" => 'w t f'}

 I call $.post() from my client.

 Why are the multiple spaces in my string converted to one space?  Data
 corruption!

 I spent the day googling this, and didn't find anyone who could explain
 why this is happening.  Is there some config I don't know about that needs
 to be setup to not corrupt the data?

 {{{#!php
 <?php
 add_action( 'rest_api_init',   'setupRESTApi' );

 function setupRESTApi() {
         register_rest_route( 'api', '/rest', array(
                 'methods'  => WP_REST_Server::CREATABLE,
                 'callback' => 'endpoint_rest'
         ) );
 }

 // WP_REST_Request
 function endpoint_rest( $request ) {
          $result = ["wtf" => 'w                      t
 f'];

         return rest_ensure_response( $result );
 }
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/39755>
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