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Re: Brittleness of called-interactively-p

From: Stefan Monnier
Subject: Re: Brittleness of called-interactively-p
Date: Fri, 07 Aug 2015 13:18:16 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

> Exactly, see above. I thought that may be it is better to associate
> interactive form with function symbol rather than with function itself.

That'd be a major change.

> Yes, indeed, and this method is described in the doc string of
> called-interactively-p. This means however that one odd argument is added to
> the function interface which plays only technical role.

That's one way to look at it.  The way I look at it, instead, is that
this extra argument is just as important as the others and that it
shouldn't be called `called-interactively' or `interactive' but instead
it should have a name that describes how it affects the behavior of the
command, e.g. `emit-message' if it is used to decide whether or not to
call `message'.

> And also advices which need this information will have to modify the
> argument list of the original function if it does not provide
> it already.

By default advices preserve all arguments already, so that's
no problem.  The novelty is that advices can now decide whether the
inner function will behave as if called interactively or not.


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