Re: declare function/macro private

[Boruch Baum]

On 2021-06-07 15:39, Eli Zaretskii wrote:
> > Date: Sun, 6 Jun 2021 23:35:26 -0400
> > From: Boruch Baum <boruch_baum@gmx.com>
> > Cc: "Paul W. Rankin" <0278C47F-42CE-45C4-B789-83C57DF1A191@bydasein.com>,
> >  Stefan Monnier <monnier@iro.umontreal.ca>
> >
> > On Sun, 06 Jun 2021 22:54:41 -0400, Stefan Monnier wrote:
> >
> > > My current guess is that you fear that "--" has currently been used
> > > carelessly
> >
> > Using 'ivy/counsel' and performing M-x -- gives me 56 completion
> > candidates. 23 are from magit, Here are the rest:
>
> You need to remove from this list those which are intended for
> invocation via the mouse.  They aren't relevant to the issue at hand,
> because the "--" was used there "for other purposes".

The point was just to support Paul Rankin's position that a '--'
substring isn't a reliable determinant of a function's public/private
nature, so can't be used as an alternative to an explicit (optional)
declaration.

My concern isn't the declaration, but the scope of its consequences. For
example, an emacs user who does no elisp programming would be happy to
have no private variable/function results appear among completion
candidates when performing M-x describe-variable/function. Elisp
programmers would want those completion candidates exposed, and subject
to being extended/advised.

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