Make different parts of the output configurable by setting user functions

This naming convention denotes “private” functions; however, if we want to introduce more
customization, we should make these available and documented well.

org-clock-waybar.el

@@ -1,4 +1,3 @@
-;;; ...  -*- lexical-binding: t -*-
 ;;; org-clock-waybar.el --- Summary
 
 ;; Copyright (C) 2021 Gergely Polonkai
@@ -39,7 +38,7 @@
 
 ;;; Code:
 
-(require 'xdg nil t)
+(require 'xdg)
 (require 'json)
 (require 'org-clock)
 
@@ -48,9 +47,7 @@
   :group 'emacs)
 
 (defcustom org-clock-waybar-filename
-  (if (fboundp 'xdg-cache-home)
   (expand-file-name "waybar-current-task.json" (xdg-cache-home))
-    (expand-file-name "~/.cache/waybar-current-task.json"))
   "Name of the file to save task data to."
   :type 'string
   :group 'org-clock-waybar)
@@ -138,12 +135,12 @@ When nil, the percentage text will be an empty string."
 (defun org-clock-waybar-get-tags ()
   "Get the tags of the currently clocked-in task."
   (when (org-clocking-p)
-    (or (org-with-point-at org-clock-marker (org-get-tags))
-        "")
-    ))
+    (save-window-excursion
+      (org-clock-goto)
+      (org-get-tags))))
 
 (defun org-clock-waybar--get-clocked-task-json ()
-  "Get the currently clocked-in task's data as a stringified JSON object.
+  "Get the currently clocked-in task’s data as a stringified JSON object.
 
 The output is in JSON format constructed in a way so Waybar can process it.
 If there is no clocked in task, alt becomes empty and text will be set to the
@@ -194,24 +191,19 @@ value of `org-clock-waybar-not-clocked-in-text'."
     (insert (org-clock-waybar--get-clocked-task-json))
     (write-file org-clock-waybar-filename)))
 
-(defun org-clock-waybar-output-task ()
+(defun org-clock-waybar-ouptut-task ()
   "Output the current task in JSON format Waybar can understand.
 
 This function is ought to be used via Emacsclient:
 
 emacsclient --eval '(org-clock-waybar-output-task)'"
-  (let* ((output (org-clock-waybar--get-clocked-task-json))
-         (start 0)
-         (end (length output)))
-    (set-text-properties start end nil output)
-    output))
+  (org-clock-waybar--get-clocked-task-json))
 
 (defun org-clock-waybar-setup ()
   "Setup org-clock-waybar.
 
 It adds `org-clock-waybar-save-task' to both `org-clock-in-hook' and
 `org-clock-out-hook'."
-  (add-hook 'org-clock-cancel-hook #'org-clock-waybar-save-task)
   (add-hook 'org-clock-in-hook #'org-clock-waybar-save-task)
   (add-hook 'org-clock-out-hook #'org-clock-waybar-save-task)
   (add-hook 'kill-emacs-hook #'org-clock-waybar-save-task))