wp-includes/fonts/class-wp-font-face.php:370Compiles the font variation settings.
$font_variation_settingsarraystring private function compile_variations( array $font_variation_settings ) { $variations = ''; foreach ( $font_variation_settings as $key => $value ) { $variations .= "$key $value"; } return $variations; }Introduced in 6.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/fonts/class-wp-font-face.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.