Function: helpful--version-info

helpful--version-info is a natively compiled function defined in helpful.el.

Signature

(helpful--version-info SYM)

Documentation

If SYM has version information, format and return it.

Return nil otherwise.

Source Code

;; Defined in /nix/store/mvfc1hll8a1f23ivm3qmzj4bn64jr3x7-emacs-packages-deps/share/emacs/site-lisp/elpa/helpful-20250408.334/helpful.el
(defun helpful--version-info (sym)
  "If SYM has version information, format and return it.
Return nil otherwise."
  (when (symbolp sym)
    (let ((package-version
           (get sym 'custom-package-version))
          (emacs-version
           (get sym 'custom-version)))
      (cond
       (package-version
        (format
         "This variable was added, or its default value changed, in %s version %s."
         (or (car-safe package-version) "unknown")
         (or (cdr-safe package-version) "unknown")))
       (emacs-version
        (format
         "This variable was added, or its default value changed, in Emacs %s."
         emacs-version))))))