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Error (use-package): w3m/:config: Symbol’s value as variable is void: w3m-filter-configuration

I have a use-package statement that was producing an error because apparently emacs-w3m doesn't configure its variables at the times other packages do. Anyway, my question is, why do I have to resort to setq-default here, when my reading of the use-package help is that the :defines keyword was made for precisely this use-case?

(use-package w3m
  :demand t
  :defines w3m-filter-configuration ;; doesn't seem to do any good
  :config
  (setq-default w3m-filter-configuration (list)) ;; why is this line needed despite :defines?
  (add-to-list 'w3m-filter-configuration '(t "Make page readable" ".*" tsa/readability)))
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    I think you need :config there not :custom. Jun 10, 2021 at 15:12
  • Thanks, @FranBurstall. It was a typo when I cut out the unnecessary parts of the real definition. Fixed now. Jun 10, 2021 at 19:45
  • Ok, thanks. Comments deleted and close-vote retracted.
    – phils
    Jun 16, 2021 at 22:06

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