- && (up_style == ly_symbol2scm ("fa") || up_style == ly_symbol2scm ("faThin"))
- && (down_style == ly_symbol2scm ("fa") || down_style == ly_symbol2scm ("faThin")))
+ && (scm_is_eq (up_style, ly_symbol2scm ("fa"))
+ || scm_is_eq (up_style, ly_symbol2scm ("faThin")))
+ && (scm_is_eq (down_style, ly_symbol2scm ("fa"))
+ || scm_is_eq (down_style, ly_symbol2scm ("faThin"))))