Scm_CharClass     104 src/class.c    SCM_DEFINE_BUILTIN_CLASS_SIMPLE(Scm_CharClass, NULL);
Scm_CharClass     580 src/gauche.h   SCM_CLASS_DECL(Scm_CharClass);
Scm_CharClass     593 src/gauche.h   #define SCM_CLASS_CHAR             (&Scm_CharClass)