Add new keys in help-mode for navigation

Add keys to browse back and forward in help-mode

cf syl20bnr#2698

Add new key in help-mode

Last changes for motion in help buffer

layers/+distribution/spacemacs-base/keybindings.el

@@ -47,9 +47,14 @@
 (global-set-key (kbd "<left-margin> <double-mouse-1>") 'spacemacs/select-current-block)
 (global-set-key (kbd "<left-margin> <drag-mouse-1>") 'spacemacs/mu-select-linum)
 
-;; let TAB jump between links in help buffers
+;; motions keys for help buffers
 (evil-define-key 'motion help-mode-map (kbd "<tab>") 'forward-button)
 (evil-define-key 'motion help-mode-map (kbd "S-<tab>") 'backward-button)
+(evil-define-key 'motion help-mode-map (kbd "]") 'help-go-forward)
+(evil-define-key 'motion help-mode-map (kbd "[") 'help-go-back)
+(evil-define-key 'motion help-mode-map (kbd "s") 'help-follow-symbol)
+(evil-define-key 'motion help-mode-map (kbd "u") 'scroll-up)
+(evil-define-key 'motion help-mode-map (kbd "d") 'scroll-down)
 
 ;; ---------------------------------------------------------------------------
 ;; evil-leader key bindings