Function: helpful--in-manual-p

helpful--in-manual-p is a natively compiled function defined in helpful.el.

Signature

(helpful--in-manual-p SYM)

Documentation

Return non-nil if SYM is in an Info manual.

Source Code

;; Defined in /nix/store/mvfc1hll8a1f23ivm3qmzj4bn64jr3x7-emacs-packages-deps/share/emacs/site-lisp/elpa/helpful-20250408.334/helpful.el
(defun helpful--in-manual-p (sym)
  "Return non-nil if SYM is in an Info manual."
  (let ((completions
         (cl-letf (((symbol-function #'message)
                    (lambda (_format-string &rest _args))))
           (info-lookup->completions 'symbol 'emacs-lisp-mode))))
    (-when-let (buf (get-buffer " temp-info-look"))
      (kill-buffer buf))
    (or (assoc sym completions)
        (assoc-string sym completions))))