Re: Define interactive function with arguments

[Christopher Dimech]

Is the following code the way to write user defined functions
with arguments?

( defun Transpose-Paragraphs-Arg (arg)
    "Transfer paragraph backward"
    (interactive)
    (transpose-paragraphs arg)
)

Regards
C*


> Sent: Friday, October 09, 2020 at 1:47 AM
> From: "Emanuel Berg via Users list for the GNU Emacs text editor" 
> <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Define interactive function with arguments
>
> Christopher Dimech wrote:
>
> > I want to call a function that takes a numeric
> > argument to I can shift paragraphs.
> >
> > ( defun Transpose-Paragraphs-Arg (arg)
> >     "Transfer paragraph backward"
> >     (interactive)
> >     (transpose-paragraphs arg)
> > )
> >
> > I have been using "M-x Transpose-Paragraphs-Arg"
> >
> > But then, how does one pass the value of the
> > argument to the function.
>
> C-u X M-x transpose-paragraphs RET
>
> where X marks the spot!
>
> Use without an explicit number also works,
>
>   just C-u - 4
>   then C-u C-u - 16
>   and so on
>
> Also negative values are possible, e.g.
>
>   C-u -1 M-x transpose-paragraphs RET
>
> Also works with shortcuts.
>
> See
>
>   C-h f universal-argument RET
>
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>
>