+test_begin_subtest "leading/trailing whitespace in new.tags is ignored"
+# avoid complications with leading spaces and "notmuch config"
+sed -i 's/^tags=.*$/tags= fu bar ; ; bar /' notmuch-config
+add_message
+NOTMUCH_NEW --quiet
+notmuch dump id:$gen_msg_id | sed 's/ --.*$//' > OUTPUT
+cat <<EOF >EXPECTED
+#notmuch-dump batch-tag:3 config,properties,tags
++bar +fu%20bar
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+