How to selectively enable flyspell-mode?

Question

How can I selectively enable spell checking?

Previously I had the same issue as this question and disabled spell checking globally. But now I can't seem to enable it back on buffers that I need it, like org and latex.

I've tried adding (flyspell-mode-on) to the mode hooks, to no effect.

(add-hook 'org-mode-hook
            (lambda ()
              ;...
              (flyspell-mode-on)
              ;...
              ))

Calling it interactively on the buffer seems to work, though.

layer configuration:

(defun dotspacemacs/layers ()
  "Layer configuration:
This function should only modify configuration layer settings."
  (setq-default
   ;...

   ;; List of configuration layers to load.
   dotspacemacs-configuration-layers
   '(
     ;...
     (spell-checking :variables
                     spell-checking-enable-by-default nil
                     spell-checking-enable-auto-dictionary t)
))

I'm using spacemacs 0.999.0 (develop head) @ emacs 27.1

Answer 1

The doc string of flyspell-mode-on says it all:

Turn Flyspell mode on. Do not use this; use ‘flyspell-mode’ instead.

The canonical way for switching Flyspell on in Orgmode is:

(add-hook 'org-mode-hook #'flyspell-mode)

And if you want to use Flyspell with LaTeX you have to consider which exact mode you use. Do you use the built-in latex-mode or do you use the AucTeX version.

For AucTeX you have to set:

(add-hook 'LaTeX-mode-hook #'flyspell-mode)

for the internal latex-mode you have to set

(add-hook 'latex-mode-hook #'flyspell-mode)