mu4e-thread-folding not working with Doom Emacs (mu4e 1.4.15)

[mcamou]

I've installed mu4e-thread-folding on Doom Emacs and it does not work. Doom is installing mu4e 1.4.15.

I've tried e.g. M-x mu4e-headers-fold-all and mu4e-headers-fold-at-point and nothing happens.

[FrostyX]

I've tried e.g. M-x mu4e-headers-fold-all and mu4e-headers-fold-at-point and nothing happens.

Happens to me as well, and I am using vanilla Emacs.
Just saying in case some debugging is required, we can try to find what is the intersection of Doom configuration and mine.

[mcamou]

I did M-x mu4e-thread-folding-mode. Initially nothing happened, but when I opened a message folding mode got activated. I assume that I need to add this call to one of the mu4e hooks.

[mcamou]

I got it to work with this config:

(use-package! mu4e-thread-folding
  :after mu4e
  :config
  (add-to-list 'mu4e-header-info-custom
               '(:empty . (:name "Empty"
                           :shortname ""
                           :function (lambda (msg) "  "))))

  (setq! mu4e-headers-fields '((:empty         .    2)
                              (:human-date    .   12)
                              (:flags         .    6)
                              (:mailing-list  .   10)
                              (:from          .   22)
                              (:subject       .   nil))
         mu4e-thread-folding-default-view 'folded
         mu4e-headers-found-hook '(mu4e-headers-mark-threads mu4e-headers-fold-all))

  (evil-define-key 'normal mu4e-headers-mode-map
    (kbd "TAB")  'mu4e-headers-toggle-at-point
    (kbd "<left>") 'mu4e-headers-fold-at-point
    (kbd "<S-left>") 'mu4e-headers-fold-all
    (kbd "<right>") 'mu4e-headers-unfold-at-point
    (kbd "<S-right>") 'mu4e-headers-unfold-all)
)

The relevant line is (setq mu4e-headers-found-hook '(mu4e-headers-mark-threads mu4e-headers-fold-all)).

Now if only #27 gets fixed I will be happy.

[rougier]

The first time you activate the mode, it does not parse the current view and you need to do a new search before it becomes active (i.e. it has parsed the view).