Changeset 60671

Timestamp:

08/26/2025 09:06:43 PM (12 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(