Adding Completion to (interactive)
Adding Completion to (interactive)
Author: TuboQuestion:
Is there any way to add my own completion to an (interactive) elisp function? Ideally, I'd like to pass it a list of strings that it would tab-complete from. I know that using (interactive "D"), (interactive "F") or (interactive "b") give you completion for directories, files and buffer-names respectively, but what about more general inputs?
Answer:
The argument to interactive need not be a string; if it isn't, it's evaluated to get the list of arguments to pass to the function. Therefore, you can do something like this:
(defun insert-foo-bar-or-baz (arg) (interactive (list (completing-read "Choose one: " '("foo" "bar" "baz")))) (insert arg))