+test_begin_subtest "Adding non-maildir tags does not move message from new to cur"
+add_message [subject]='"Message to stay in new"' \
+ [date]='"Sat, 01 Jan 2000 12:00:00 -0000"' \
+ [filename]='message-to-stay-in-new' [dir]=new
+notmuch tag +donotmove subject:"Message to stay in new"
+output=$(cd "$MAIL_DIR"; ls */message-to-stay-in-new*)
+test_expect_equal "$output" "new/message-to-stay-in-new"
+
+test_begin_subtest "Message in cur lacking maildir info gets one on any tag change"
+add_message [filename]='message-to-get-maildir-info' [dir]=cur
+notmuch tag +anytag id:$gen_msg_id
+output=$(cd "$MAIL_DIR"; ls */message-to-get-maildir-info*)
+test_expect_equal "$output" "cur/message-to-get-maildir-info:2,"
+
+test_begin_subtest "Message in new with maildir info is moved to cur on any tag change"
+add_message [filename]='message-with-info-to-be-moved-to-cur:2,' [dir]=new
+notmuch tag +anytag id:$gen_msg_id
+output=$(cd "$MAIL_DIR"; ls */message-with-info-to-be-moved-to-cur*)
+test_expect_equal "$output" "cur/message-with-info-to-be-moved-to-cur:2,"
+
+test_begin_subtest "Removing 'S' flag from existing filename adds 'unread' tag"
+add_message [subject]='"Removing S flag"' [filename]='removing-s-flag:2,S' [dir]=cur
+output=$(notmuch search subject:"Removing S flag" | notmuch_search_sanitize)
+output+="
+"
+mv "${gen_msg_filename}" "${gen_msg_filename%S}"
+output+=$(NOTMUCH_NEW)
+output+="
+"
+output+=$(notmuch search subject:"Removing S flag" | notmuch_search_sanitize)
+test_expect_equal "$output" "thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Removing S flag (inbox)
+No new mail. Detected 1 file rename.
+thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Removing S flag (inbox unread)"
+