mu4e: Use tree view by default

.emacs.d/init.el

@@ -326,8 +326,8 @@
     ;; (setq mu4e-debug t)
     (setq mu4e-headers-show-threads nil
           mu4e-headers-include-related nil)
-    ;; For testing purposes:
-    ;; (setq mu4e-conversation-print-function 'mu4e-conversation-print-tree)
+    ;; Tree is better to detect thread-jacks.
+    (setq mu4e-conversation-print-function 'mu4e-conversation-print-tree)
     (add-hook 'mu4e-conversation-hook 'flyspell-mode)
     (defun ambrevar/mu4e-conversation-sync ()
       (let ((mu4e-get-mail-command "mbsync mail-sent atlas-sent"))