str_conv_enc     1601 ruby.c         	opt->script_name = str_conv_enc(opt->script_name, uenc, lenc);
str_conv_enc     1627 ruby.c         	    opt->e_script = str_conv_enc(opt->e_script, uenc, eenc);
str_conv_enc     2055 ruby.c             return str_conv_enc(str, NULL, rb_default_external_encoding());