w2e_conv 2300 ext/nkf/nkf-utf8/nkf.c ret = w2e_conv(c1, c2, c3, &c1, &c2); w2e_conv 2312 ext/nkf/nkf-utf8/nkf.c nkf_char ret = w2e_conv(c1, c2, c3, &c1, &c2); w2e_conv 3233 ext/nkf/nkf-utf8/nkf.c w2e_conv(ptr->buf[0], ptr->buf[1], ptr->buf[2],