feat(biblio): add +icons for citar

modules/tools/biblio/config.el

@@ -22,7 +22,48 @@
   :config
   (setq org-cite-insert-processor 'citar
         org-cite-follow-processor 'citar
-        org-cite-activate-processor 'citar))
+        org-cite-activate-processor 'citar)
+  (when (modulep! :completion vertico +icons)
+    (defvar citar-indicator-files-icons
+      (citar-indicator-create
+       :symbol (all-the-icons-faicon
+                "file-o"
+                :face 'all-the-icons-green
+                :v-adjust -0.1)
+       :function #'citar-has-files
+       :padding "  " ; need this because the default padding is too low for these icons
+       :tag "has:files"))
+    (defvar citar-indicator-links-icons
+      (citar-indicator-create
+       :symbol (all-the-icons-octicon
+                "link"
+                :face 'all-the-icons-orange
+                :v-adjust 0.01)
+       :function #'citar-has-links
+       :padding "  "
+       :tag "has:links"))
+    (defvar citar-indicator-notes-icons
+      (citar-indicator-create
+       :symbol (all-the-icons-material
+                "speaker_notes"
+                :face 'all-the-icons-blue
+                :v-adjust -0.3)
+       :function #'citar-has-notes
+       :padding "    "
+       :tag "has:notes"))
+    (defvar citar-indicator-cited-icons
+      (citar-indicator-create
+       :symbol (all-the-icons-faicon
+                "circle-o"
+                :face 'all-the-icon-green)
+       :function #'citar-is-cited
+       :padding "  "
+       :tag "is:cited"))
+    (setq citar-indicators
+          (list citar-indicator-files-icons
+                citar-indicator-links-icons
+                citar-indicator-notes-icons
+                citar-indicator-cited-icons))))
 
 (use-package! citar-embark
   :when (modulep! :completion vertico)