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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: Proper behavior of C-u 3 C-v
Date: Sun, 16 Aug 2020 17:33:42 +0300
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In-Reply-To: <87h7t3xm2u.fsf@gnu.org> (message from Amin Bandali on Sun, 16
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> From: Amin Bandali <bandali@gnu.org>
> Date: Sun, 16 Aug 2020 00:15:53 -0400
> 
> >   Scroll text of selected window upward ARG lines
> 
> The doc string is indeed clear, but I personally wouldn't have expected
> that behaviour.  I'm curious if there's a particular reason why C-v
> deviates from the convention of other similar movement commands, where
> specifying a numerical ARG `n' would have the effect of performing that
> command's action `n' times (e.g. M-3 M-f to move forward three words).

Because what we do is more useful, I guess.  I find this so useful
that I have a special command to scroll by 1 line bound to a key since
time immemoriam.

But anyway, this behavior is so old that the person to ask is probably
RMS himself.