list where the first element is a message, and the second element
is a possibly empty forest of replies.
"
- (let ((args '("show" "--format=json")))
+ (let ((args '("show" "--format=json" "--format-version=1")))
(if notmuch-show-process-crypto
(setq args (append args '("--decrypt"))))
(setq args (append args search-terms))