diff -ruN /usr/ports/chinese/tin/Makefile tin/Makefile
--- /usr/ports/chinese/tin/Makefile	Thu Jan 23 21:34:37 2003
+++ tin/Makefile	Wed Oct  8 15:18:40 2003
@@ -13,6 +13,8 @@
 MAINTAINER=	yssu@CCCA.NCTU.edu.tw
 
 EXTRA_PATCHES=	${.CURDIR}/files/patch-attrib.c \
+		${.CURDIR}/files/patch-cook.c \
+		${.CURDIR}/files/patch-mail.c \
 		${.CURDIR}/files/patch-init.c
 
 .include "${MASTERDIR}/Makefile"
diff -ruN /usr/ports/chinese/tin/files/patch-cook.c tin/files/patch-cook.c
--- /usr/ports/chinese/tin/files/patch-cook.c	Thu Jan  1 08:00:00 1970
+++ tin/files/patch-cook.c	Wed Oct  8 15:07:01 2003
@@ -0,0 +1,15 @@
+--- src/cook.c.orig	Tue Aug 26 20:34:07 2003
++++ src/cook.c	Wed Oct  8 15:05:05 2003
+@@ -719,7 +719,12 @@
+ 			break;	/* premature end of file, file error etc. */
+ 
+ 		/* convert network to local charset, tex2iso, iso2asc etc. */
++#ifndef CHARSET_CONVERSION
+ 		process_charsets(&line, &max_line_len, get_param(part->params, "charset"), tinrc.mm_local_charset, CURR_GROUP.attribute->tex2iso_conv && art->tex2iso);
++#else
++		// force to use undeclared_charset first
++		process_charsets(&line, &max_line_len, (CURR_GROUP.attribute->undeclared_charset) ? (CURR_GROUP.attribute->undeclared_charset) : get_param(part->params, "charset"), tinrc.mm_local_charset, CURR_GROUP.attribute->tex2iso_conv && art->tex2iso);
++#endif /* !CHARSET_CONVERSION */
+ 
+ 		len = (int) strlen(line);
+ 
diff -ruN /usr/ports/chinese/tin/files/patch-mail.c tin/files/patch-mail.c
--- /usr/ports/chinese/tin/files/patch-mail.c	Thu Jan  1 08:00:00 1970
+++ tin/files/patch-mail.c	Wed Oct  8 15:07:07 2003
@@ -0,0 +1,15 @@
+--- src/mail.c.orig	Sun Aug 10 21:27:36 2003
++++ src/mail.c	Wed Oct  8 14:52:42 2003
+@@ -327,7 +327,12 @@
+ 			 *
+ 			 * TODO: change US-ASCII to UTF-8 when NNTP draft becomes RFC
+ 			 */
++#ifndef CHARSET_CONVERSION
+ 			process_charsets(&r, &r_len, "US-ASCII", tinrc.mm_local_charset, FALSE);
++#else
++			process_charsets(&r, &r_len, (CURR_GROUP.attribute->undeclared_charset) ? (CURR_GROUP.attribute->undeclared_charset) : "US-ASCII", tinrc.mm_local_charset, FALSE);
++#endif /* !CHARSET_CONVERSION */
++
+ 			group->description = convert_to_printable(r);
+ 		}
+