diff -urN v7/ezhtml.py v8/ezhtml.py
--- v7/ezhtml.py	2018-09-18 21:52:05.000000000 +0900
+++ v8/ezhtml.py	2018-09-18 21:52:28.000000000 +0900
@@ -192,7 +192,10 @@
 if __name__ == "__main__":
 	b = nkf.get_stdin()
 	opt = nkf.guess(b)
-	html = nkf.dec( nkf.do_cmd('file - | grep -i html', b) ).strip()
+
+	is_html = lambda : nkf.dec( nkf.do_cmd('file - | grep -i html', b) ).strip()
+	html = True if 'h' in sys.argv else False if 'y' in sys.argv else is_html()
+
 	u8 = nkf.cvt(b, '-u')
 	s = nkf.dec(u8)