* testing/lisp/test-org-ctags.el (test-org-ctags/create-tags-escape):
A new test that tag regexp and directory names are properly quoted
while "*" wildcard is active.
(test-org-ctags/list-elements test-org-ctags/list-elements-equal-p)
(test-org-ctags/list-elements-equal-explain): Helpers to provide
informative failure messages.
(test-org-ctags/with-fake-ctags): A helper to create temporary
directories and a file and to temporary arrange a mock shell command
instead of ctags executable.
(test-org-ctags/mock-command test-org-ctags/get-args): Helpers to define
a mock shell command and to obtain its actual arguments.
Max Nikulin