SCM_CLASS_SYNTAX 3014 src/class.c        CINIT(SCM_CLASS_SYNTAX,           "<syntax>");
SCM_CLASS_SYNTAX 2401 src/gauche.h   #define SCM_SYNTAXP(obj)            SCM_XTYPEP(obj, SCM_CLASS_SYNTAX)
SCM_CLASS_SYNTAX   64 src/macro.c        SCM_SET_CLASS(s, SCM_CLASS_SYNTAX);