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Formatting: Avoid escaping valid XML values in esc_xml().

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This change improves the `esc_xml()` function by replacing two `empty()` checks with `isset()` to cover values that are not equal to `''` but still returning `true` when checked with `empty()`, like `'0'`, `0` or `false`. It also updates the related unit tests accordingly.

Props rumpel2116, pbiron.
Fixes #55399.

Built from https://develop.svn.wordpress.org/trunk@53144


git-svn-id: http://core.svn.wordpress.org/trunk@52733 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
audrasjb 2022-04-11 20:00:09 +00:00
parent 523c679e76
commit 70dea8e3c2
2 changed files with 3 additions and 3 deletions
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4
wp-includes/formatting.php
View File

@ -4639,11 +4639,11 @@ EOF;
$safe_text = (string) preg_replace_callback(
$regex,
static function( $matches ) {
if ( ! $matches[0] ) {
if ( ! isset( $matches[0] ) ) {
return '';
}
if ( ! empty( $matches['non_cdata'] ) ) {
if ( isset( $matches['non_cdata'] ) ) {
// escape HTML entities in the non-CDATA Section.
return _wp_specialchars( $matches['non_cdata'], ENT_XML1 );
}

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '6.0-alpha-53143';
$wp_version = '6.0-alpha-53144';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.