[StumpWM] Better mode-line formatting handling

org/config/stumpwm.org

@@ -494,6 +494,15 @@ the font I am using (see §[[#Theme-Fonts-28pc8141v5j0]]).
 : (("%g") ("%W") ("^>") ("mu-unread" . t) ("%m") ("%I") ("%l") ("%C") ("%M") ("%B") ("%d"))
 
 #+begin_src lisp :noweb yes
+(defvar *mode-line-formatter-list*
+  '<<modeline-format-gen()>>
+  "List of formatters for the modeline.")
+#+end_src
+
+As you can see, ~generate-modeline~ generates the string defining
+~*screen-mode-line-format*~ from the list of formatters we gave it with
+the table [[modeline-format]].
+#+begin_src lisp
 (defun generate-modeline (elements &optional not-invertedp)
   "Generate a modeline for StumpWM.
 ELEMENTS should be a list of `cons'es which `car' is the modeline
@@ -517,20 +526,21 @@ when the `car' is a formatter and t when it is a shell command."
                       `(:eval (run-shell-command ,formatter t))
                       (format nil "~A" formatter))
                   (generate-modeline (cdr elements) (not not-invertedp)))))))
+#+end_src
 
+It is then easy to define a command that can call this function and
+set this variable so we can sort of reload the mode-line.
+#+begin_src lisp
 (defcommand reload-modeline () ()
             "Reload modeline."
             (setf *screen-mode-line-format*
-                  (cdr (generate-modeline '<<modeline-format-gen()>>))))
-
-(reload-modeline)
+                  (cdr (generate-modeline *mode-line-formatter-list*))))
 #+end_src
 
-This variable as you can see is a list of elements, although here I am
-only using one string. But it is absolutely possible to insert some
-CLisp code in here that returns some string if the user needs some
-code to return data that cannot be easily accesible otherwise. I might
-add some at some point, but not today yet.
+And actually, let’s reload the modeline immediately.
+#+begin_src lisp
+(reload-modeline)
+#+end_src
 
 ** TODO Investigate why ~stumptray~ acts up                         :noexport:
 :PROPERTIES: