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Modified strip_shortcode_tag() to return HTML entities #10433

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Modified strip_shortcode_tag() to return HTML entities #10433

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4 changes: 3 additions & 1 deletion src/wp-includes/shortcodes.php
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Original file line number Diff line number Diff line change
Expand Up @@ -757,7 +757,9 @@ function strip_shortcodes( $content ) {
function strip_shortcode_tag( $m ) {
// Allow [[foo]] syntax for escaping a tag.
if ( '[' === $m[1] && ']' === $m[6] ) {
return substr( $m[0], 1, -1 );
// Convert escaped shortcode to HTML entities to prevent unexpected execution
// when do_shortcode() is called later (e.g., in excerpt generation).
return '[' . substr( $m[0], 2, -2 ) . ']';
}

return $m[1] . $m[6];
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