Bind SPC h w to +default/man-or-woman #639

Woman is essentially elisp-only Man; useful for systems without
man (Windows, particularly).

modules/config/default/+bindings.el

@@ -617,6 +617,7 @@
         :desc "Describe DOOM setting" :n  "s" #'doom/describe-setting
         :desc "Describe variable"     :n  "v" #'describe-variable
         :desc "Print Doom version"    :n  "V" #'doom/version
+        :desc "Man pages"             :n  "w" #'+default/man-or-woman
         :desc "Describe at point"     :n  "." #'helpful-at-point
         :desc "What face"             :n  "'" #'doom/what-face
         :desc "What minor modes"      :n  ";" #'doom/describe-active-minor-mode)

modules/config/default/autoload/default.el

@@ -68,3 +68,12 @@ If ARG (universal argument), runs `compile' from the current directory."
      (if arg
          #'projectile-compile-project
        #'compile))))
+
+;;;###autoload
+(defun +default/man-or-woman ()
+  "Invoke `man' if man is installed, otherwise use `woman'."
+  (interactive)
+  (call-interactively
+   (if (executable-find "man")
+       #'man
+     #'woman)))