colon), e.g. (:id "123" :time 54321 :from "foobar"). Null is printed as
nil, true as t and false as nil.
-This is version 4 of the structured output format.
+This is version 5 of the structured output format.
Version history
---------------
- (notmuch 0.29) added message.crypto to identify overall message
cryptographic state
+v5
+- sorting support for notmuch show (no change to actual schema,
+ just new command line argument)
+
Common non-terminals
--------------------
created?: unix_time,
expires?: unix_time,
userid?: string
+ email?: string
# if status is not "good":
keyid?: string
errors?: sig_errors