Re: [Emacs-diffs] master 61f8c23 1/2: Minor advice.el fix

[Philipp Stephani <p.stephani2@gmail.com>]

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Stefan Monnier <monnier@iro.umontreal.ca> schrieb am So., 18. Dez. 2016 um
21:15 Uhr:

> > For some of them definitely. I'd draw the line between pure functions
> like
> > car and eq, where those facilities never make sense and would be
> > ineffective anyway as the functions are compiled away or called directly,
> > and impure functions like call-process, where fset is necessary for
> > mocking. As a rule of thumb, I'd suggest to ban fset on all symbols that
> > have a byte-code equivalent, and on constant symbols.
>
> I still very doubt that the potential benefit is worth the added cost
> (more specifically, as a maintainer I would strongly oppose such
> measure).


Why is then the potential benefit for the value cells worth the added cost,
i.e. why not also allow (set t 5)?


> Are you also going to try and prevent the user from using all
> the other ways he can shoot himself in the foot?
>
>
To the extent that it's feasible, yes. Emacs Lisp isn't C. If the user
wants to shoot themselves in the foot, they can write a C module.

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