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I am actively using flyspell on all text files under text-mode.

For example: Under requirements.txt text file I am keeping my python packages where I do not need to enable flyspell. But since it is a text file flyspell keep does its checks. So I want to disable flyspell for specific file names like: requirements.txt and so on. It also enable in yaml-mode even I did not enable it.

My setup:

(flyspell-mode 1)
(setq flyspell-issue-message-flag nil
      ispell-local-dictionary "en_US"
      ispell-program-name "aspell"
      ispell-extra-args '("--sug-mode=ultra"))

(dolist (hook '(text-mode-hook))
     (add-hook hook (lambda () (flyspell-mode 1))))
    (dolist (hook '(change-log-mode-hook log-edit-mode-hook))
      (add-hook hook (lambda () (flyspell-mode -1))))
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  • yaml-mode is derived from text-mode, so it runs the text-mode-hook. – NickD Jun 12 '20 at 0:54
  • Do you really want that first line in the code? – NickD Jun 12 '20 at 1:20
  • Actually I don't. I took first line from a documentation and it remain as it is. Should I delete it? – alper Jun 12 '20 at 8:32
  • I think so: you don't want to turn it on globally; that's why you turn it on (and off) in all the hooks. – NickD Jun 12 '20 at 12:04
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You can write a function that turns off the mode if the filename matches a list and add the function to the find-file-hook. Something like this:

(defvar no-flyspell-list '("requirements.txt"))

(defun turn-off-flyspell-if-match ()
  (if (member (file-name-nondirectory (buffer-file-name)) no-flyspell-list)
      (flyspell-mode -1)))

(add-hook 'find-file-hook #'turn-off-flyspell-if-match)

As I mentioned in a comment, yaml-mode is derived from text-mode so the text-mode-hook is run and it turns on flyspell-mode. But the derived mode hook, yaml-mode-hook is run after the parent mode hook, so you can add a turn-off function to it:

(add-hook `yaml-mode-hook (lambda () (flyspell-mode -1)))

Or add it to your list of other modes (change-log-mode-hook, log-edit-mode-hook) where you turn off flyspell-mode.

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  • Is order of calling the add-hook important? To be safe I put end of the file. – alper Jun 12 '20 at 8:31
  • 1
    No, the only constraint is that the hook variable is defined, so the package where it is defined must be loaded already. That is not a problem for find-file-hook: that is done before your init file is loaded. – NickD Jun 12 '20 at 12:03

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