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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2Fweb%2F'>web</a>/<a href='?path=%2Fbig%2Fweb%2Fwww.santi.wien%2F'>www.santi.wien</a>/<a href='?path=%2Fbig%2Fweb%2Fwww.santi.wien%2Fhtdocs%2F'>htdocs</a>/<a href='?path=%2Fbig%2Fweb%2Fwww.santi.wien%2Fhtdocs%2Fwp-includes%2F'>wp-includes</a>/<a href='?path=%2Fbig%2Fweb%2Fwww.santi.wien%2Fhtdocs%2Fwp-includes%2Fblocks%2F'>blocks</a>/</p><hr><h3>✏️ Editing: tab-panel.php</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>&lt;?php
/**
 * Tab Panel Block
 *
 * @package WordPress
 */

/**
 * Render callback for core/tab-panel.
 *
 * @since 7.1.0
 *
 * @param array     $attributes Block attributes.
 * @param string    $content    Block content.
 * @param \WP_Block $block      Block instance.
 *
 * @return string Updated HTML.
 */
function block_core_tab_panel_render( array $attributes, string $content, \WP_Block $block ): string {
	$tabs_id = $block-&gt;context[&#039;core/tabs-id&#039;] ?? &#039;&#039;;

	static $tab_counters = array();

	if ( ! isset( $tab_counters[ $tabs_id ] ) ) {
		$tab_counters[ $tabs_id ] = 0;
	}

	$tab_index = $tab_counters[ $tabs_id ];
	++$tab_counters[ $tabs_id ];

	$tag_processor = new WP_HTML_Tag_Processor( $content );
	$tag_processor-&gt;next_tag( array( &#039;class_name&#039; =&gt; &#039;wp-block-tab-panel&#039; ) );

	// Use the user&#039;s custom anchor if present, otherwise fall back to
	// the generated position-based ID.
	$tab_id = (string) $tag_processor-&gt;get_attribute( &#039;id&#039; );
	if ( empty( $tab_id ) ) {
		$tab_id = ! empty( $tabs_id )
			? $tabs_id . &#039;-tab-&#039; . $tab_index
			: &#039;tab-&#039; . $tab_index;
		$tag_processor-&gt;set_attribute( &#039;id&#039;, $tab_id );
	}

	$tag_processor-&gt;set_attribute( &#039;aria-labelledby&#039;, &#039;tab__&#039; . $tab_id );
	$tag_processor-&gt;set_attribute( &#039;data-wp-bind--hidden&#039;, &#039;!state.isActiveTab&#039; );

	return (string) $tag_processor-&gt;get_updated_html();
}

/**
 * Registers the `core/tab-panel` block on the server.
 *
 * @hook init
 *
 * @since 7.1.0
 */
function register_block_core_tab_panel() {
	register_block_type_from_metadata(
		__DIR__ . &#039;/tab-panel&#039;,
		array(
			&#039;render_callback&#039; =&gt; &#039;block_core_tab_panel_render&#039;,
		)
	);
}
add_action( &#039;init&#039;, &#039;register_block_core_tab_panel&#039; );
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
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