GNU bug report logs - #6151
mystery arguments of define-minor-mode + describe-function

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: jidanni <at> jidanni.org
To: bug-gnu-emacs <at> gnu.org
Subject: mystery arguments of define-minor-mode + describe-function
Date: Mon, 10 May 2010 18:02:37 +0800

Some describe-function results add a mystery argument ARG, not visible
in the corresponding lisp code.

Or maybe it is visible, but not to your average reader.

E.g., here's what describe-function says

    longlines-mode is an interactive compiled Lisp function in
    `longlines.el'.

    (longlines-mode &optional ARG)

    Toggle Long Lines mode.
    In Long Lines mode, long lines are wrapped if they extend beyond

And here's where we get placed when clicking on longlines.el above

    ;;;###autoload
    (define-minor-mode longlines-mode
      "Toggle Long Lines mode.
    In Long Lines mode, long lines are wrapped if they extend beyond

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