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Query: Remove nextpage block delimiters when setting up global post d…

…ata.

`WP_Query::setup_postdata()` splits the post up by `<!--nextpage-->`, which causes invalid block data to be contained in the post content.

This change removes the `<!-- wp:nextpage -->` and `<!-- /wp:nextpage -->`, as well.

Props pento, youknowriad, azaozz, noisysocks.
See #45401.



git-svn-id: https://develop.svn.wordpress.org/branches/5.0@43940 602fd350-edb4-49c9-b593-d223f7449a82
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pento committed Nov 23, 2018
1 parent 8d003dc commit 104ff2d3c7d8c7f5b914510ff665276073d52256
Showing with 4 additions and 0 deletions.
  1. +4 −0 src/wp-includes/class-wp-query.php
@@ -4000,6 +4000,10 @@ public function setup_postdata( $post ) {
$content = str_replace( "\n<!--nextpage-->", '<!--nextpage-->', $content );
$content = str_replace( "<!--nextpage-->\n", '<!--nextpage-->', $content );
// Remove the nextpage block delimiters, to avoid invalid block structures in the split content.
$content = str_replace( '<!-- wp:nextpage -->', '', $content );
$content = str_replace( '<!-- /wp:nextpage -->', '', $content );
// Ignore nextpage at the beginning of the content.
if ( 0 === strpos( $content, '<!--nextpage-->' ) )
$content = substr( $content, 15 );

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