+test_begin_subtest "--batch --input --remove-all"
+notmuch dump --format=batch-tag > backup.tags
+notmuch tag +foo +bar -- One
+notmuch tag +tag7 -- Two
+notmuch tag --batch --input=batch.in --remove-all
+notmuch search \* | notmuch_search_sanitize > OUTPUT
+notmuch restore --format=batch-tag < backup.tags
+cat > batch_removeall.expected <<EOF
+thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; One (@ tag6)
+thread:XXX 2001-01-05 [1/1] Notmuch Test Suite; Two (tag6)
+EOF
+test_expect_equal_file batch_removeall.expected OUTPUT
+rm batch_removeall.expected
+