# creating new directories in the mail store, then it should be
# creating all necessary database state for those directories.
+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}" "${gen_msg_filename%S}"
+increment_mtime "$(dirname "${gen_msg_filename}")"
+output+=$(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)"
+
test_begin_subtest "Removing info from filename leaves tags unchanged"
add_message [subject]='"Message to lose maildir info"' [filename]='message-to-lose-maildir-info' [dir]=cur
notmuch tag -unread subject:"Message to lose maildir info"
output=$(ls $MAIL_DIR/cur)
test_expect_equal "$output" "$expected"
+test_begin_subtest 'Adding flags to duplicate message tags the mail'
+add_message [subject]='"Duplicated message"' [dir]=cur [filename]='duplicated-message:2,'
+cp "$MAIL_DIR/cur/duplicated-message:2," "$MAIL_DIR/cur/duplicated-message-copy:2,RS"
+increment_mtime $MAIL_DIR/cur
+NOTMUCH_NEW > output
+notmuch search subject:"Duplicated message" | notmuch_search_sanitize >> output
+test_expect_equal "$(< output)" "No new mail.
+thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Duplicated message (inbox replied)"
+
+test_begin_subtest "Duplicate mail with new flags propagates flag to original file"
+(cd $MAIL_DIR/cur/; ls duplicated*) > actual
+test_expect_equal "$(< actual)" "duplicated-message:2,RS
+duplicated-message-copy:2,RS"
+
+test_begin_subtest "Adding duplicate message without flags does not remove tags"
+cp "$MAIL_DIR/cur/duplicated-message-copy:2,RS" "$MAIL_DIR/cur/duplicated-message-another-copy:2,"
+increment_mtime $MAIL_DIR/cur
+NOTMUCH_NEW > output
+notmuch search subject:"Duplicated message" | notmuch_search_sanitize >> output
+test_expect_equal "$(< output)" "No new mail.
+thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Duplicated message (inbox replied)"
+
+test_begin_subtest "Tag changes modify flags of multiple files"
+notmuch tag -replied subject:"Duplicated message"
+(cd $MAIL_DIR/cur/; ls duplicated*) > actual
+test_expect_equal "$(< actual)" "duplicated-message-another-copy:2,S
+duplicated-message-copy:2,S
+duplicated-message:2,S"
+
test_done