(require 'notmuch-message)
(require 'notmuch-parser)
+(unless (require 'notmuch-version nil t)
+ (defconst notmuch-emacs-version "unknown"
+ "Placeholder variable when notmuch-version.el[c] is not available."))
+
(defcustom notmuch-search-result-format
`(("date" . "%12s ")
("count" . "%-7s ")