_custom_logo_header_styles() │ WP 4.5.0

Adds CSS to hide header text for custom logo, based on Customizer setting.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

null. Nothing (null).

Usage

_custom_logo_header_styles();

Changelog

Since 4.5.0 Introduced.

_custom_logo_header_styles() code WP 6.9.1

wp-includes/theme.php 
<?php
function _custom_logo_header_styles() {
	if ( ! current_theme_supports( 'custom-header', 'header-text' )
		&& get_theme_support( 'custom-logo', 'header-text' )
		&& ! get_theme_mod( 'header_text', true )
	) {
		$classes = (array) get_theme_support( 'custom-logo', 'header-text' );
		$classes = array_map( 'sanitize_html_class', $classes );
		$classes = '.' . implode( ', .', $classes );

		$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
		?>
		<!-- Custom Logo: hide header text -->
		<style id="custom-logo-css"<?php echo $type_attr; ?>>
			<?php echo $classes; ?> {
				position: absolute;
				clip-path: inset(50%);
			}
		</style>
		<?php
	}
}