file_scm 4217 src/extlib.c ScmObj file_scm; file_scm 4225 src/extlib.c file_scm = SCM_ARGREF(0); file_scm 4226 src/extlib.c if (!SCM_STRINGP(file_scm)) Scm_Error("string required, but got %S", file_scm); file_scm 4227 src/extlib.c file = SCM_STRING(file_scm);