emacs: Use notmuch tag --batch for large tag queries

(Unfortunately, it's difficult to first demonstrate this problem with
a known-broken test because modern Linux kernels have argument length
limits in the megabytes, which makes Emacs really slow!)

1 files changed, 8 insertions, 0 deletions

diff --git a/test/emacs b/test/emacs
index 05295af8..5fbee121 100755
--- a/test/emacs
+++ b/test/emacs
@@ -122,6 +122,14 @@ test_emacs "(notmuch-search \"$os_x_darwin_thread\")
 output=$(notmuch search $os_x_darwin_thread | notmuch_search_sanitize)
 test_expect_equal "$output" "thread:XXX   2009-11-18 [4/4] Jjgod Jiang, Alexander Botero-Lowry; [notmuch] Mac OS X/Darwin compatibility issues (inbox unread)"
 
+test_begin_subtest "Add tag (large query)"
+# We use a long query to force us into batch mode and use a funny tag
+# that requires escaping for batch tagging.
+test_emacs "(notmuch-tag (concat \"$os_x_darwin_thread\" \" or \" (make-string notmuch-tag-argument-limit ?x)) (list \"+tag-from-%-large-query\"))"
+output=$(notmuch search $os_x_darwin_thread | notmuch_search_sanitize)
+test_expect_equal "$output" "thread:XXX   2009-11-18 [4/4] Jjgod Jiang, Alexander Botero-Lowry; [notmuch] Mac OS X/Darwin compatibility issues (inbox tag-from-%-large-query unread)"
+notmuch tag -tag-from-%-large-query $os_x_darwin_thread
+
 test_begin_subtest "notmuch-show: add single tag to single message"
 test_emacs "(notmuch-show \"$os_x_darwin_thread\")
 	    (execute-kbd-macro \"+tag-from-show-view\")"