rb_feature_p     5507 eval.c         	    return rb_feature_p(feature, Qfalse);
rb_feature_p     5510 eval.c             return rb_feature_p(RSTRING(f)->ptr, Qfalse);
rb_feature_p     5599 eval.c             if (rb_feature_p(RSTRING(fname)->ptr, Qfalse))
rb_feature_p     5604 eval.c             if (rb_feature_p(RSTRING(feature)->ptr, Qfalse))
rb_feature_p     5626 eval.c             if (rb_feature_p(RSTRING(feature)->ptr, Qtrue))