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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.


git-svn-id: https://develop.svn.wordpress.org/trunk@53144 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jb Audras
2022-04-11 19:58:04 +00:00
parent 0453d1bc0d
commit 4ee40e3ff1
2 changed files with 7 additions and 2 deletions
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tests/phpunit/tests/formatting/escXml.php
+5
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@@ -42,6 +42,11 @@ class Tests_Formatting_EscXml extends WP_UnitTestCase {
"SELECT meta_key, meta_value FROM wp_trunk_sitemeta WHERE meta_key IN ('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled') AND site_id = 1",
'SELECT meta_key, meta_value FROM wp_trunk_sitemeta WHERE meta_key IN ('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled') AND site_id = 1',
),
// Zero string.
array(
'0',
'0',
),
);
}