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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/57716">57716</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/57716","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>youknowriad</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-02-27 10:13:13 +0000 (Tue, 27 Feb 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Editor: Check for null values in Theme JSON to cater for blockGap.

When resolving theme.json preset variables, add a check to make sure the value is not empty before we run it through strpos() and preg_match_all().

Props ramonopoly, mukesh27, get_dave.
Fixes <a href="https://core.trac.wordpress.org/ticket/60613">#60613</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpthemejsonphp">trunk/src/wp-includes/class-wp-theme-json.php</a></li>
<li><a href="#trunktestsphpunitteststhemewpThemeJsonphp">trunk/tests/phpunit/tests/theme/wpThemeJson.php</a></li>
</ul>

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<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesclasswpthemejsonphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/class-wp-theme-json.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-theme-json.php     2024-02-26 23:49:59 UTC (rev 57715)
+++ trunk/src/wp-includes/class-wp-theme-json.php       2024-02-27 10:13:13 UTC (rev 57716)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3857,6 +3857,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * Replaces CSS variables with their values in place.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.3.0
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @since 6.5.0 Check for empty style before processing its value.
+        *
</ins><span class="cx" style="display: block; padding: 0 10px">          * @param array $styles CSS declarations to convert.
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array $values key => value pairs to use for replacement.
</span><span class="cx" style="display: block; padding: 0 10px">         * @return array
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3863,6 +3865,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        private static function convert_variables_to_value( $styles, $values ) {
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( $styles as $key => $style ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        if ( empty( $style ) ) {
+                               continue;
+                       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         if ( is_array( $style ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                $styles[ $key ] = self::convert_variables_to_value( $style, $values );
</span><span class="cx" style="display: block; padding: 0 10px">                                continue;
</span></span></pre></div>
<a id="trunktestsphpunitteststhemewpThemeJsonphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/theme/wpThemeJson.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/theme/wpThemeJson.php   2024-02-26 23:49:59 UTC (rev 57715)
+++ trunk/tests/phpunit/tests/theme/wpThemeJson.php     2024-02-27 10:13:13 UTC (rev 57716)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5092,6 +5092,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( 'var(--wp--preset--color--s)', $styles['blocks']['core/quote']['variations']['plain']['color']['background'], 'Style variations: Assert the internal variables are convert to CSS custom variables.' );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        /**
+        * Tests that the theme.json file is correctly parsed and the variables are resolved.
+        *
+        * @ticket 58588
+        * @ticket 60613
+        *
+        * @covers WP_Theme_JSON_Gutenberg::resolve_variables
+        * @covers WP_Theme_JSON_Gutenberg::convert_variables_to_value
+        */
</ins><span class="cx" style="display: block; padding: 0 10px">         public function test_resolve_variables() {
</span><span class="cx" style="display: block; padding: 0 10px">                $primary_color   = '#9DFF20';
</span><span class="cx" style="display: block; padding: 0 10px">                $secondary_color = '#9DFF21';
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5099,6 +5108,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $raw_color_value = '#efefef';
</span><span class="cx" style="display: block; padding: 0 10px">                $large_font      = '18px';
</span><span class="cx" style="display: block; padding: 0 10px">                $small_font      = '12px';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $spacing         = 'clamp(1.5rem, 5vw, 2rem)';
</ins><span class="cx" style="display: block; padding: 0 10px">                 $theme_json      = new WP_Theme_JSON(
</span><span class="cx" style="display: block; padding: 0 10px">                        array(
</span><span class="cx" style="display: block; padding: 0 10px">                                'version'  => WP_Theme_JSON::LATEST_SCHEMA,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5138,6 +5148,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                                        ),
</span><span class="cx" style="display: block; padding: 0 10px">                                                ),
</span><span class="cx" style="display: block; padding: 0 10px">                                        ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        'spacing'    => array(
+                                               'spacingSizes' => array(
+                                                       array(
+                                                               'size' => $spacing,
+                                                               'name' => '100',
+                                                               'slug' => '100',
+                                                       ),
+                                               ),
+                                       ),
</ins><span class="cx" style="display: block; padding: 0 10px">                                 ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'styles'   => array(
</span><span class="cx" style="display: block; padding: 0 10px">                                        'color'    => array(
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5200,6 +5219,16 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                                                ),
</span><span class="cx" style="display: block; padding: 0 10px">                                                        ),
</span><span class="cx" style="display: block; padding: 0 10px">                                                ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                'core/post-template'   => array(
+                                                       'spacing' => array(
+                                                               'blockGap' => null,
+                                                       ),
+                                               ),
+                                               'core/columns'         => array(
+                                                       'spacing' => array(
+                                                               'blockGap' => 'var(--wp--preset--spacing--100)',
+                                                       ),
+                                               ),
</ins><span class="cx" style="display: block; padding: 0 10px">                                         ),
</span><span class="cx" style="display: block; padding: 0 10px">                                ),
</span><span class="cx" style="display: block; padding: 0 10px">                        )
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5243,6 +5272,19 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( $small_font, $styles['blocks']['core/quote']['variations']['plain']['typography']['fontSize'], 'Block variations: font-size' );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( $secondary_color, $styles['blocks']['core/quote']['variations']['plain']['color']['background'], 'Block variations: color' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                /*
+                * As with wp_get_global_styles(), WP_Theme_JSON::resolve_variables may be called with merged data from
+                * WP_Theme_JSON_Resolver. WP_Theme_JSON_Resolver::get_block_data() sets blockGap for supported blocks to `null` if the value is not defined.
+                */
+               $this->assertNull(
+                       $styles['blocks']['core/post-template']['spacing']['blockGap'],
+                       'Blocks: Post Template spacing.blockGap should be null'
+               );
+               $this->assertEquals(
+                       $spacing,
+                       $styles['blocks']['core/columns']['spacing']['blockGap'],
+                       'Blocks: Columns spacing.blockGap should match'
+               );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span></span></pre>
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