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I am using Emacs 26.1 on MacOS 10.14.2. I am trying to use hunspell with 3 dictionaries that are installed in ~/Library/Spelling but when I start Emacs I got the following error: Wrong type argument: stringp, nil

;; Portuguese dictionary
 (with-eval-after-load "ispell"
   (setq ispell-program-name "hunspell")
   (setq ispell-dictionary "en_GB,en_US,pt_PT")
;;   ispell-set-spellchecker-params has to be called
;;   before ispell-hunspell-add-multi-dic will work
   (ispell-set-spellchecker-params)
   (ispell-hunspell-add-multi-dic "en_GB,en_US,pt_PT"))
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  • It seems that you have an error in your init file, my guess is that it's the call to ispell-set-spellchecker-params, which probably takes some arguments. You could try commenting out different expressions to pin down the problem.
    – user12563
    Jan 15, 2019 at 18:36
  • I commented out the last 2 lines and Emacs starts with no error. But I have no spell checking. I don't know what parameters I am missing after ispell-set-spellchecker-params. I followed the answer to emacs.stackexchange.com/questions/21378/….
    – sbac
    Jan 15, 2019 at 18:57
  • What steps have you taken to configure hunspell to look in ~/Library/Spelling? I don't use hunspell, but perhaps there is a conf file (that either exists already, or can be created in the right location) where a user may specify the path of a dictionary location if it is different than what was specified (or the default) when the program was built.
    – lawlist
    Jan 15, 2019 at 19:38
  • Well I tried to configure hunspell with the following: (setenv "DICPATH" (concat (getenv "HOME") "/Library/Spelling")) but I got an init error.
    – sbac
    Jan 15, 2019 at 20:30

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