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Re: Prefix Argument and optional argument

From: carlmarcos
Subject: Re: Prefix Argument and optional argument
Date: Wed, 6 Jul 2022 23:35:11 +0200 (CEST)

Jul 6, 2022, 11:25 by

> carlmarcos--- via Users list for the GNU Emacs text editor
> <> writes:
>> > You should compile your code; Emacs will say:
>> >
>> >  Warning: misplaced interactive spec: ‘(interactive P)’
>> >
>> I did call `M-x byte-compile-file file' but did not get the warning
>> you desrcibe.
> This has been added to master only recently.
> Michael.
Why is it that using &optional for prefix in good, but without &optional part 
is bad?
Should every time one uses the prefix argument, one has to use an optional 

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