* lisp/mh-e/mh-utils.el (mh-sub-folders): Fix handling of "+/". * test/lisp/mh-e/mh-utils-tests.el (mh-folder-completion-function-08-plus-slash) (mh-folder-completion-function-09-plus-slash-tmp): Fix errors made importing tests from mh-unit.el; remove declaration that these tests are expected to fail.