Ie, suppose I press
M-x org-agenda and ivy says there's 131 matches, of which I recognize maybe 10. It'd be useful to say, after a .2 second delay, display a tooltip for the function at point. Is there a way to do that?
I think you are looking for something like ivy-rich. You can configure what should be displayed in the minibuffer, including the help string of the functions. You can configure the ivy-rich-display-transformers-alist. For description of variables or functions you can configure columns:
(:columns ((counsel-M-x-transformer (:width 40)) (ivy-rich-counsel-function-docstring (:face font-lock-doc-face)))) counsel-describe-function (:columns ((counsel-describe-function-transformer (:width 40)) (ivy-rich-counsel-function-docstring (:face font-lock-doc-face)))) counsel-describe-variable
WHich is as far as I remember already configured by default.
Hope this helps.