When listing messages:

- Use the P_TRUNCATE pmode flag to prevent long msg subj from wrapping the
  terminal
- Use msghdr_text() to do the magic UTF-8/CP437 dance for messages with UTF-8
  header fields (e.g. to/from/subject)

This is why I assigned MSG_HFIELDS_UTF8 the same bit-flag value as P_UTF8. :-)

src/sbbs3/readmail.cpp

@@ -142,7 +142,8 @@ void sbbs_t::readmail(uint usernumber, int which, long lm_mode)
 			if(loadmsg(&msg,mail[smb.curmsg].number) < 1)
 				continue;
 			smb_unlockmsghdr(&smb,&msg);
-			bprintf(text[MailWaitingLstFmt],smb.curmsg+1
+			bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+				,msghdr_text(&msg, MailWaitingLstFmt), smb.curmsg+1
 				,which==MAIL_SENT ? msg.to
 				: (msg.hdr.attr&MSG_ANONYMOUS) && !SYSOP ? text[Anonymous]
 				: msg.from
@@ -489,12 +490,14 @@ void sbbs_t::readmail(uint usernumber, int which, long lm_mode)
 						continue;
 					smb_unlockmsghdr(&smb,&msg);
 					if(which==MAIL_ALL)
-						bprintf(text[MailOnSystemLstFmt]
+						bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+							,msghdr_text(&msg, MailOnSystemLstFmt)
 							,u+1,msg.from,msg.to
 							,mail_listing_flag(&msg)
 							,msg.subj);
 					else
-						bprintf(text[MailWaitingLstFmt],u+1
+						bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+							,msghdr_text(&msg, MailWaitingLstFmt),u+1
 							,which==MAIL_SENT ? msg.to
 							: (msg.hdr.attr&MSG_ANONYMOUS) && !SYSOP
 							? text[Anonymous] : msg.from
@@ -660,12 +663,14 @@ void sbbs_t::readmail(uint usernumber, int which, long lm_mode)
 						continue;
 					smb_unlockmsghdr(&smb,&msg);
 					if(which==MAIL_ALL)
-						bprintf(text[MailOnSystemLstFmt]
+						bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+							,msghdr_text(&msg, MailOnSystemLstFmt)
 							,u+1,msg.from,msg.to
 							,mail_listing_flag(&msg)
 							,msg.subj);
 					else
-						bprintf(text[MailWaitingLstFmt],u+1
+						bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+							,msghdr_text(&msg, MailWaitingLstFmt),u+1
 							,which==MAIL_SENT ? msg.to
 							: (msg.hdr.attr&MSG_ANONYMOUS) && !SYSOP
 							? text[Anonymous] : msg.from
@@ -828,12 +833,14 @@ long sbbs_t::searchmail(mail_t *mail, long start, long msgs, int which, const ch
 					bprintf(text[MailWaitingLstHdr], order);
 			}
 			if(which==MAIL_ALL)
-				bprintf(text[MailOnSystemLstFmt]
+				bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+					,msghdr_text(&msg, MailOnSystemLstFmt)
 					,l+1,msg.from,msg.to
 					,mail_listing_flag(&msg)
 					,msg.subj);
 			else
-				bprintf(text[MailWaitingLstFmt],l+1
+				bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+					,msghdr_text(&msg, MailWaitingLstFmt),l+1
 					,which==MAIL_SENT ? msg.to
 					: (msg.hdr.attr&MSG_ANONYMOUS) && !SYSOP
 					? text[Anonymous] : msg.from

src/sbbs3/readmsgs.cpp

@@ -74,7 +74,8 @@ long sbbs_t::listmsgs(uint subnum, long mode, post_t *post, long i, long posts,
 		smb_unlockmsghdr(&smb,&msg);
 		if(listed==0)
 			bputs(text[MailOnSystemLstHdr]);
-		bprintf(text[SubMsgLstFmt], reading ? (i+1) : post[i].num
+		bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+			,msghdr_text(&msg, SubMsgLstFmt), reading ? (i+1) : post[i].num
 			,msg.hdr.attr&MSG_ANONYMOUS && !sub_op(subnum)
 			? text[Anonymous] : msg.from
 			,msg.to
@@ -1764,7 +1765,8 @@ long sbbs_t::searchposts(uint subnum, post_t *post, long start, long posts
 			|| (msg.tags != NULL && strcasestr(msg.tags, search) != NULL)) {
 			if(!found)
 				bputs(text[MailOnSystemLstHdr]);
-			bprintf(text[SubMsgLstFmt],l+1
+			bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+				,msghdr_text(&msg, SubMsgLstFmt),l+1
 				,(msg.hdr.attr&MSG_ANONYMOUS) && !sub_op(subnum) ? text[Anonymous]
 				: msg.from
 				,msg.to
@@ -1819,7 +1821,8 @@ long sbbs_t::showposts_toyou(uint subnum, post_t *post, ulong start, long posts,
 			if(!found)
 				bputs(text[MailOnSystemLstHdr]);
 			found++;
-			bprintf(text[SubMsgLstFmt],l+1
+			bprintf(P_TRUNCATE|(msg.hdr.auxattr&MSG_HFIELDS_UTF8)
+				,msghdr_text(&msg, SubMsgLstFmt),l+1
 				,(msg.hdr.attr&MSG_ANONYMOUS) && !SYSOP
 				? text[Anonymous] : msg.from
 				,msg.to