In *scratch*, write
(defun foo? ())
and hit C-j to evaluate the definition.=C2=A0 Then, try to display the help=
screen of foo? using C-h f foo? RET.=C2=A0 The minibuffer won't let you=
enter
? or auto-complete foo to foo?, even though ? can be part of a symbol.
I've just found that the Emacs manual =
documents this behavior (? prints a list of possible completions). Given th=
at ? can only have one function, and the current one does make sense, this =
behavior is rather a design choice than a bug. Closing.=C2=A0