             "j" #'doc-view-next-line-or-next-page
             "k" #'doc-view-previous-line-or-previous-page
             "h" #'image-backward-hscroll
-            "l" #'image-forward-hscroll))
+            "l" #'image-forward-hscroll)
+  :ensure nil)
 
 (use-package pdf-tools
   :magic ("%PDF" . pdf-view-mode)

        dired-listing-switches "-alh1vG --group-directories-first"    ; human readable sizes
        dired-auto-revert-buffer t       ; revert buffer on revisit
        dired-dwim-target t)             ; use existing dired buffer, if exists
  :config
  :ensure nil)

;; implement empty subdir collapsing
(use-package dired-collapse
  :hook (dired-mode  . dired-collapse-mode)
  :config)

;; implement dired-narrow function
(use-package dired-narrow


;; view symbols of libraries
(use-package elf-mode
  :magic
  (("ELF" . elf-mode)))

(use-package woman
  :init
  (setq woman-use-topic-at-point t                          ; man page on word at point if exists
        Man-notify-method 'aggressive)                      ; show&select man page in other window
