bug#6151: mystery arguments of define-minor-mode + describe-function

[Lars Magne Ingebrigtsen]

jidanni@jidanni.org writes:

> 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

I don't see a bug here -- this is how `define-minor-mode' works.

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