SCM_CHARSET_PRINT  817 src/char.c                 return Scm_GetStandardCharSet(SCM_CHARSET_PRINT);
SCM_CHARSET_PRINT  862 src/char.c             if (isprint(code)) MASK_SET(CS(SCM_CHARSET_PRINT), code);
SCM_CHARSET_PRINT  924 src/gauche.h       SCM_CHARSET_PRINT,