Account for a desired 0 characters in content limit

formatting.php

function genesis_truncate_phrase( $text, $max_characters ) {

	if ( ! $max_characters ) {
		return '';
	}

	$text = trim( $text );

	if ( mb_strlen( $text ) > $max_characters ) {

		//* Truncate $text to $max_characters + 1
		$text = mb_substr( $text, 0, $max_characters + 1 );

		//* Truncate to the last space in the truncated string
		$text_trim = trim( mb_substr( $text, 0, mb_strrpos( $text, ' ' ) ) );

		$text = empty( $text_trim ) ? $text : $text_trim;

	}

	return $text;
}