Changeset 60671

Timestamp:

08/26/2025 09:06:43 PM (4 months ago)

Author:

TimothyBlynJacobs

Message:

Formatting: Add 'white-space' as an allowed KSES CSS attribute.

The 'white-space' attribute is safe, has wide browser support, and is useful.

Props sukhendu2002, mukesh27, whyisjake..
Fixes #51707.

Location:

trunk

Files:

• src/wp-includes/kses.php (modified) (2 diffs)
• tests/phpunit/tests/kses.php (modified) (1 diff)

trunk/src/wp-includes/kses.php

@@ -2419 +2419 @@
  * @since 6.5.0 Added support for `background-repeat`.
  * @since 6.6.0 Added support for `grid-column`, `grid-row`, and `container-type`.
+ * @since 6.9.0 Added support for `white-space`.
  *
  * @param string $css        A string of CSS rules.
@@ -2511 +2512 @@
             'text-indent',
             'text-transform',
+            'white-space',
 
             'height',

trunk/tests/phpunit/tests/kses.php

@@ -1181 +1181 @@
                 'expected' => 'object-fit: cover',
             ),
+            // `white-space` introduced in 6.9.0.
+            array(
+                'css'      => 'white-space: nowrap',
+                'expected' => 'white-space: nowrap',
+            ),
+            array(
+                'css'      => 'white-space: pre',
+                'expected' => 'white-space: pre',
+            ),
+            array(
+                'css'      => 'white-space: pre-wrap',
+                'expected' => 'white-space: pre-wrap',
+            ),
+            array(
+                'css'      => 'white-space: pre-line',
+                'expected' => 'white-space: pre-line',
+            ),
             // Expressions are not allowed.
             array(