+ (function (lambda (x)
+ (if (file-exists-p
+ (expand-file-name
+ (concat elmo-archive-basename
+ (elmo-archive-get-suffix
+ (elmo-archive-folder-archive-type-internal
+ folder)))
+ (expand-file-name
+ x
+ (elmo-archive-folder-path folder))))
+ (concat (elmo-folder-prefix-internal folder) x))))