ch_DSTR          1177 src/gauche.h           ScmChar ch_DSTR = (ch);                         \
ch_DSTR          1179 src/gauche.h           int siz_DSTR = SCM_CHAR_NBYTES(ch_DSTR);        \
ch_DSTR          1182 src/gauche.h           SCM_CHAR_PUT(d_DSTR->current, ch_DSTR);         \