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POHow to call interactive Emacs Lisp function with a prefix argument, from another Emacs Lisp function?
 

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  1. POHow to call interactive Emacs Lisp function with a prefix argument, from another Emacs Lisp function?
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    <p>I want to write an Emacs Lisp function that will turn on <code>flyspell-mode</code> regardless of the current state of the mode. Function <code>flyspell-mode-on</code> is deprecated. The documentation suggests that a positive prefix argument will turn <code>flyspell-mode</code>, but unfortunately running</p> <pre><code>(flyspell-mode 1) </code></pre> <p>results in an error message:</p> <pre><code>Wrong number of arguments: (lambda (flyspell-mode 1)), 0 </code></pre> <p>If I could figure out how to call <code>flyspell-mode</code> with a <em>prefix</em> argument, I believe I could solve this problem.</p> <p>The most relevant section I can find in the Emacs Lisp manual is the section entitled "Interactive Call", which describes such commands as <code>call-interactively</code>. This is emphatically not what I want.</p> <p>(The ultimate problem I am trying to solve is to create a mode hook that turns on the mode regardless of its current state.)</p> <p>N.B. The title of the question <a href="https://stackoverflow.com/questions/6156286/">emacs lisp call function with prefix argument programmatically</a> makes it appear to be related, but that question was asking about how to create an interactive command, and the issue was ultimately resolved by using <code>call-interactively</code>.</p> <hr> <p><strong>EDIT</strong>: This question is moot; I have found an alternate solution to my original problem:</p> <pre><code>(add-hook 'text-mode-hook (function (lambda () (require 'flyspell) (if flyspell-mode nil (flyspell-mode))))) </code></pre> <p>But I would still like to know how to call an Emacs Lisp function with a prefix argument, from another Emacs Lisp function, with <em>nothing</em> interactive.</p> <hr> <p><strong>UPDATE</strong>: Perhaps I should have asked why I was getting that error message...</p>
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