Ok, that's good to know. That page claims that Emacs "highlights confusing opening delimiters (those that ought to be
quoted) in bold red", but I'm not seeing that in this case. Is there some setting to enable this, or is it likely that some other elisp package I have installed is interfering with this highlighting? Or can Emacs not catch this kind of misplaced paren in a string?
When editing Emacs Lisp code, if I write a function whose docstring
contains a line beginning with an open paren, Emacs refuses to
auto-indent any line in the function body.