kanji_convert    6463 ext/nkf/nkf-utf8/nkf.c 	    kanji_convert(stdin);
kanji_convert    6553 ext/nkf/nkf-utf8/nkf.c 		    kanji_convert(fin);
kanji_convert     166 ext/nkf/nkf.c      kanji_convert(NULL);
kanji_convert     198 ext/nkf/nkf.c      kanji_convert( NULL );